Android开发之《Android应用开发揭秘》UI事件汇总

/*

* Android开发之《Android应用开发揭秘》UI事件汇总

* 北京Android俱乐部群：167839253

* Created on: 2011-12-01

* Author: blueeagle

* Email: [e-mail]

*/

思想跑毛是很可怕的，最近去尝试了下创业，结果碰了一鼻子灰，公司乱七八糟的项目搞的焦头烂额。各种没有心情。还好，现在沉淀下来，继续 android开发的征程。

以下是Android应用开发揭秘这本书第四章的关于UI的事件处理的总结。基本上都是可以复用的代码。存着日后方便。

1.EditView控件的setOnKeyListener方法。点击上下左右键或者中间键的时候可以出发该方法。代码如下。
Java代码

   1.      myEditView.setOnKeyListener(new EditText.OnKeyListener(){ 
   2.  
   3. @Override 
   4. public boolean onKey(View v, int keyCode, KeyEvent event) { 
   5.         myTextView.setText("文本框中内容是："+myEditView.getText().toString()); 
   6.         return false;// TODO Auto-generated method stub 
   7. } 
   8.      }); 

myEditView.setOnKeyListener(new EditText.OnKeyListener(){ @Override public boolean onKey(View v, int keyCode, KeyEvent event) { myTextView.setText("文本框中内容是："+myEditView.getText().toString()); return false;// TODO Auto-generated method stub } });

2.RadioButton控件和RadioGroup控件的组合使用，代码如下：
Java代码

   1.      myRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 
   2.  
   3. @Override 
   4. public void onCheckedChanged(RadioGroup group, int checkedId) { 
   5.     // TODO Auto-generated method stub 
   6.     if(checkedId == myRadioButton3.getId()) 
   7.     { 
   8.         DisplayToast("正确答案："+myRadioButton3.getText()+"恭喜你回答正确"); 
   9.     } 
  10.     else 
  11.     { 
  12.         DisplayToast("回答错误"); 
  13.     } 
  14. } 
  15. ); 

myRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub if(checkedId == myRadioButton3.getId()) { DisplayToast("正确答案："+myRadioButton3.getText()+"恭喜你回答正确"); } else { DisplayToast("回答错误"); } } });


3.CheckBox控件的使用，代码如下：
Java代码

   1. myCheckBox1.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener(){ 
   2.     @Override 
   3.     public void onCheckedChanged(CompoundButton buttonView, 
   4.             boolean isChecked) { 
   5.         // TODO Auto-generated method stub 
   6.         if(myCheckBox1.isChecked()){ 
   7.             DisplayToast("你选择了："+myCheckBox1.getText()); 
   8.         }            
   9.     }            
  10.       }); 

myCheckBox1.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener(){ @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { // TODO Auto-generated method stub if(myCheckBox1.isChecked()){ DisplayToast("你选择了："+myCheckBox1.getText()); } } });

4.Button控件的使用，代码如下：
Java代码

   1.      myButton1.setOnClickListener(new Button.OnClickListener(){ 
   2. @Override 
   3. public void onClick(View v) { 
   4. }            
   5.      }); 

myButton1.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { } });


4.Spinner控件的使用，代码如下：
Java代码

   1. //Spinner控件需要跟ArrayAdapter绑定使用。 
   2.     private static final String[] m_Countries = {"A型","B型","O型","AB型","未知类型"}; 
   3.     private Spinner mySpinner; 
   4.     private ArrayAdapter<String> myAdapter; 
   5.         mySpinner = (Spinner)findViewById(R.id.mySpinner1);         
   6.         myAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,m_Countries); 
   7.         //设置下拉列表风格 
   8.         myAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
   9.         //将adapter添加到mySpinner中 
  10.         mySpinner.setAdapter(myAdapter); 
  11.         //添加事件监听 
  12.         mySpinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener(){ 
  13.             @Override 
  14.             public void onItemSelected(AdapterView<?> arg0, View arg1, 
  15.                     int arg2, long arg3) { 
  16.                 // TODO Auto-generated method stub 
  17.                 myTextView.setText("你的血型是"+ m_Countries[arg2]); 
  18.                 arg0.setVisibility(View.VISIBLE); 
  19.             } 
  20.             @Override 
  21.             public void onNothingSelected(AdapterView<?> arg0) { 
  22.                 // TODO Auto-generated method stub 
  23.                 DisplayToast("你什么也没选！"); 
  24.             }            
  25.         }); 

//Spinner 控件需要跟ArrayAdapter绑定使用。 private static final String[] m_Countries = {"A型","B型","O型","AB型","未知类型"}; private Spinner mySpinner; private ArrayAdapter<String> myAdapter; mySpinner = (Spinner)findViewById(R.id.mySpinner1); myAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,m_Countries); //设置下拉列表风格 myAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); //将adapter添加到mySpinner中 mySpinner.setAdapter(myAdapter); //添加事件监听 mySpinner.setOnItemSelectedListener(new Spinner.OnItemSelectedListener(){ @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub myTextView.setText("你的血型是"+ m_Countries[arg2]); arg0.setVisibility(View.VISIBLE); } @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub DisplayToast("你什么也没选！"); } });

5.AutoCompleteTextView的使用，代码如下：
Java代码

   1. private static final String[] autoString = {"abcd1","abcd212","32123","32open","32add","android","windows","iphone","linux","mydirve","msnbmw","wocaonimalegebi"}; 
   2.     private ArrayAdapter<String> myAdapter1; 
   3.     private AutoCompleteTextView myAutoCompleteTextView; 
   4.         myAdapter1 = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,autoString); 
   5.         myAutoCompleteTextView = (AutoCompleteTextView)findViewById(R.id.myAutoCompleteTextView); 
   6.         myAutoCompleteTextView.setAdapter(myAdapter1); 
   7. 6.DatePicker、TimePicker以及Button的使用，代码如下： 
   8.         myCalendar1 = Calendar.getInstance(); 
   9.         myTextView = (TextView)findViewById(R.id.myTextView); 
  10.         myDatePicker = (DatePicker)findViewById(R.id.datePicker1); 
  11.         myTimePicker = (TimePicker)findViewById(R.id.timePicker1); 
  12.         myButton1 = (Button)findViewById(R.id.button1); 
  13.         myButton2 = (Button)findViewById(R.id.button2); 
  14.          
  15.         //将日历初始化为当前系统时间，并设置其事件监听 
  16.         myDatePicker.init(myCalendar1.get(Calendar.YEAR), myCalendar1.get(Calendar.MONTH), myCalendar1.get(Calendar.DAY_OF_MONTH), new DatePicker.OnDateChangedListener() { 
  17.              
  18.             @Override 
  19.             public void onDateChanged(DatePicker view, int year, int monthOfYear, 
  20.                     int dayOfMonth) { 
  21.                 // 当日期更改时，在这里处理。 
  22.                 // myCalendar1.set(year, month, day); 
  23.             } 
  24.         }); 
  25.         //获取TimePicker对象设置为24小时显示。 
  26.         myTimePicker.setIs24HourView(true); 
  27.         //监听时间改变 
  28.         myTimePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() { 
  29.              
  30.             @Override 
  31.             public void onTimeChanged(TimePicker view, int hourOfDay, int minute) { 
  32.                 // TODO Auto-generated method stub 
  33.                 // 当时间改变时，在这里处理。 
  34.                 //myCalendar1.set(year, month, day, hourOfDay, minute); 
  35.             } 
  36.         }); 
  37.         //-----------按钮事件---------// 
  38.         myButton1.setOnClickListener(new Button.OnClickListener(){ 
  39.             @Override 
  40.             public void onClick(View v) { 
  41.                 // 下面的NEW 是新建了一个调整日历的对话框 
  42.                 new DatePickerDialog(AndroidUnleashed001Activity.this,new DatePickerDialog.OnDateSetListener(){ 
  43.                     @Override 
  44.                     public void onDateSet(DatePicker view, int year, 
  45.                             int monthOfYear, int dayOfMonth) { 
  46.                         // TODO Auto-generated method stub 
  47.                         //设置日历 
  48.                     }            
  49.                 },myCalendar1.get(Calendar.YEAR),myCalendar1.get(Calendar.MONTH), myCalendar1.get(Calendar.DAY_OF_MONTH)).show(); 
  50.             } 
  51.         });         
  52.         myButton2.setOnClickListener(new Button.OnClickListener(){ 
  53.             @Override 
  54.             public void onClick(View v) { 
  55.                 //下面的NEW 是新建了一个调整时间的对话框      
  56.                 new TimePickerDialog(AndroidUnleashed001Activity.this, new TimePickerDialog.OnTimeSetListener() { 
  57.                      
  58.                     @Override 
  59.                     public void onTimeSet(TimePicker view, int hourOfDay, int minute) { 
  60.                         // TODO Auto-generated method stub                       
  61.                     } 
  62.                 }, myCalendar1.get(Calendar.HOUR_OF_DAY), myCalendar1.get(Calendar.MINUTE),true).show(); 
  63.             }            
  64.         }); 
  65. } 

private static final String[] autoString = {"abcd1","abcd212","32123","32open","32add","android","windows","iphone","linux","mydirve","msnbmw","wocaonimalegebi"}; private ArrayAdapter<String> myAdapter1; private AutoCompleteTextView myAutoCompleteTextView; myAdapter1 = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,autoString); myAutoCompleteTextView = (AutoCompleteTextView)findViewById(R.id.myAutoCompleteTextView); myAutoCompleteTextView.setAdapter(myAdapter1); 6.DatePicker、TimePicker以及Button的使用，代码如下： myCalendar1 = Calendar.getInstance(); myTextView = (TextView)findViewById(R.id.myTextView); myDatePicker = (DatePicker)findViewById(R.id.datePicker1); myTimePicker = (TimePicker)findViewById(R.id.timePicker1); myButton1 = (Button)findViewById(R.id.button1); myButton2 = (Button)findViewById(R.id.button2); //将日历初始化为当前系统时间，并设置其事件监听 myDatePicker.init(myCalendar1.get(Calendar.YEAR), myCalendar1.get(Calendar.MONTH), myCalendar1.get(Calendar.DAY_OF_MONTH), new DatePicker.OnDateChangedListener() { @Override public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) { // 当日期更改时，在这里处理。 // myCalendar1.set(year, month, day); } }); //获取TimePicker对象设置为24小时显示。 myTimePicker.setIs24HourView(true); //监听时间改变 myTimePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() { @Override public void onTimeChanged(TimePicker view, int hourOfDay, int minute) { // TODO Auto-generated method stub // 当时间改变时，在这里处理。 //myCalendar1.set(year, month, day, hourOfDay, minute); } }); //-----------按钮事件---------// myButton1.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { // 下面的NEW 是新建了一个调整日历的对话框 new DatePickerDialog(AndroidUnleashed001Activity.this,new DatePickerDialog.OnDateSetListener(){ @Override public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) { // TODO Auto-generated method stub //设置日历 } },myCalendar1.get(Calendar.YEAR),myCalendar1.get(Calendar.MONTH), myCalendar1.get(Calendar.DAY_OF_MONTH)).show(); } }); myButton2.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { //下面的NEW 是新建了一个调整时间的对话框 new TimePickerDialog(AndroidUnleashed001Activity.this, new TimePickerDialog.OnTimeSetListener() { @Override public void onTimeSet(TimePicker view, int hourOfDay, int minute) { // TODO Auto-generated method stub } }, myCalendar1.get(Calendar.HOUR_OF_DAY), myCalendar1.get(Calendar.MINUTE),true).show(); } }); }


7.Menu的使用，代码如下：

1.XML方式实现

XML代码可以写成：
Html代码

   1. <menu xmlns:android="http://schemas.android.com/apk/res/android"> 
   2. <item android:id="@+id/style_submenu" android:title="笔迹样式"> 
   3.  <menu> 
   4.  <group android:id="@+id/style_group" android:checkableBehavior="single"> 
   5.   <item android:id="@+id/style" android:orderInCategory="1" android:title="铅笔" />  
   6.   <item android:id="@+id/style" android:orderInCategory="2" android:title="钢笔" />  
   7.   <item android:id="@+id/style" android:orderInCategory="3" android:title="毛笔" />  
   8.   </group> 
   9.   </menu> 
  10.   </item> 
  11.  <item android:id="@+id/color_submenu" android:title="笔迹颜色"> 
  12.  <menu> 
  13.  <group android:id="@+id/color_group" android:checkableBehavior="single"> 
  14.   <item android:id="@+id/color" android:orderInCategory="0" android:title="蓝色" />  
  15.   <item android:id="@+id/color" android:orderInCategory="1" android:title="绿色" />  
  16.   <item android:id="@+id/color" android:orderInCategory="2" android:title="青色" />  
  17.   <item android:id="@+id/color" android:orderInCategory="3" android:title="红色" />  
  18.   </group> 
  19.   </menu> 
  20.   </item> 
  21.  <item android:id="@+id/width_submenu" android:title="笔迹粗细"> 
  22.  <menu> 
  23.  <group android:id="@+id/width_group" android:checkableBehavior="single"> 
  24.   <item android:id="@+id/width" android:orderInCategory="1" android:title="较细" />  
  25.   <item android:id="@+id/width" android:orderInCategory="2" android:title="细" />  
  26.   <item android:id="@+id/width" android:orderInCategory="3" android:title="中等" />  
  27.   <item android:id="@+id/width" android:orderInCategory="4" android:title="粗" />  
  28.   <item android:id="@+id/width" android:orderInCategory="5" android:title="较粗" />  
  29.   </group> 
  30.   </menu> 
  31.   </item> 
  32.   <item android:id="@+id/write" android:title="书写" />  
  33.   <item android:id="@+id/erase" android:title="清除" />  
  34.   <item android:id="@+id/clear" android:title="清屏" /> 
  35.   </menu> 

<menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/style_submenu" android:title="笔迹样式"> <menu> <group android:id="@+id/style_group" android:checkableBehavior="single"> <item android:id="@+id/style" android:orderInCategory="1" android:title="铅笔" /> <item android:id="@+id/style" android:orderInCategory="2" android:title="钢笔" /> <item android:id="@+id/style" android:orderInCategory="3" android:title="毛笔" /> </group> </menu> </item> <item android:id="@+id/color_submenu" android:title="笔迹颜色"> <menu> <group android:id="@+id/color_group" android:checkableBehavior="single"> <item android:id="@+id/color" android:orderInCategory="0" android:title="蓝色" /> <item android:id="@+id/color" android:orderInCategory="1" android:title="绿色" /> <item android:id="@+id/color" android:orderInCategory="2" android:title="青色" /> <item android:id="@+id/color" android:orderInCategory="3" android:title="红色" /> </group> </menu> </item> <item android:id="@+id/width_submenu" android:title="笔迹粗细"> <menu> <group android:id="@+id/width_group" android:checkableBehavior="single"> <item android:id="@+id/width" android:orderInCategory="1" android:title="较细" /> <item android:id="@+id/width" android:orderInCategory="2" android:title="细" /> <item android:id="@+id/width" android:orderInCategory="3" android:title="中等" /> <item android:id="@+id/width" android:orderInCategory="4" android:title="粗" /> <item android:id="@+id/width" android:orderInCategory="5" android:title="较粗" /> </group> </menu> </item> <item android:id="@+id/write" android:title="书写" /> <item android:id="@+id/erase" android:title="清除" /> <item android:id="@+id/clear" android:title="清屏" /> </menu>


JAVA代码：
Java代码

   1.    @Override 
   2. public boolean onCreateOptionsMenu(Menu menu){ 
   3.     MenuInflater inflater = getMenuInflater(); 
   4.     inflater.inflate(R.menu.menu, menu); 
   5.     return true; 
   6. } 
   7.    @Override 
   8. public boolean onOptionsItemSelected(MenuItem item){ 
   9.     int item_id = item.getItemId(); 
  10.     switch (item_id) 
  11.     { 
  12.     case R.id.about1: 
  13.         Intent intent = new Intent(); 
  14.          
  15.         intent.setClass(AndroidUnleashed001Activity.this, Activity02.class); 
  16.         startActivity(intent); 
  17.         AndroidUnleashed001Activity.this.finish(); 
  18.         break; 
  19.     case R.id.about2: 
  20.         AndroidUnleashed001Activity.this.finish(); 
  21.         break; 
  22.     } 
  23.     return true; 
  24. } 
  25. .Menu.add 方法实现 
  26. public boolean onCreateOptionsMenu(Menu menu){ 
  27.     //MenuInflater inflater = getMenuInflater(); 
  28.     //inflater.inflate(R.menu.menu, menu); 
  29.     menu.add(0,0,0,R.string.app_name); 
  30.     menu.add(0,1,1,R.string.hello); 
  31.     return true; 
  32. } 

@Override public boolean onCreateOptionsMenu(Menu menu){ MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.menu, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item){ int item_id = item.getItemId(); switch (item_id) { case R.id.about1: Intent intent = new Intent(); intent.setClass(AndroidUnleashed001Activity.this, Activity02.class); startActivity(intent); AndroidUnleashed001Activity.this.finish(); break; case R.id.about2: AndroidUnleashed001Activity.this.finish(); break; } return true; } 1.Menu.add方法实现 public boolean onCreateOptionsMenu(Menu menu){ //MenuInflater inflater = getMenuInflater(); //inflater.inflate(R.menu.menu, menu); menu.add(0,0,0,R.string.app_name); menu.add(0,1,1,R.string.hello); return true; }

8.弹出对话框的使用，代码如下：

这个功能为弹出对话框，点击确定后弹出登录对话框，然后点击登录后弹出多线程对话框。
Java代码

   1. Dialog dialog = new AlertDialog.Builder(AndroidUnleashed001Activity.this).setTitle(" 登录提示").setMessage("这里需要登录").setPositiveButton("确定", new DialogInterface.OnClickListener() {      
   2.             @Override 
   3.             public void onClick(DialogInterface dialog, int which) { 
   4.                 // 点击确定转向登陆框 
   5.                 LayoutInflater factory = LayoutInflater.from(AndroidUnleashed001Activity.this); 
   6.                 //得到自定义对话框 
   7.                 final View DialogView = factory.inflate(R.layout.pop, null); 
   8.                 //创建对话框 
   9.                 AlertDialog dlg = new AlertDialog.Builder(AndroidUnleashed001Activity.this).setTitle(" 登录框").setView(DialogView).setPositiveButton("确定", new DialogInterface.OnClickListener() {                  
  10.                     private ProgressDialog myProgressDialog; 
  11.                     @Override 
  12.                     public void onClick(DialogInterface dialog, int which) { 
  13.                         // 当输入完成后，点击确定开始登录。 
  14.                         myProgressDialog = ProgressDialog.show(AndroidUnleashed001Activity.this, "请等待", "正在为您登陆",true); 
  15.                         new Thread(){ 
  16.                             public void run(){ 
  17.                                 try{ 
  18.                                     sleep(3000); 
  19.                                 } 
  20.                                 catch(Exception e){ 
  21.                                     e.printStackTrace(); 
  22.                                 } 
  23.                                 finally{ 
  24.                                     myProgressDialog.dismiss(); 
  25.                                 } 
  26.                             } 
  27.                         }.start();                       
  28.                     } 
  29.                 }).setNegativeButton("取消", new DialogInterface.OnClickListener() { 
  30.                      
  31.                     @Override 
  32.                     public void onClick(DialogInterface dialog, int which) { 
  33.                         // TODO Auto-generated method stub 
  34.                         AndroidUnleashed001Activity.this.finish(); 
  35.                     } 
  36.                 }).create(); 
  37.                 dlg.show();              
  38.             } 
  39.         }).setNegativeButton("退出", new DialogInterface.OnClickListener() { 
  40.              
  41.             @Override 
  42.             public void onClick(DialogInterface dialog, int which) { 
  43.                 // TODO Auto-generated method stub 
  44.                 AndroidUnleashed001Activity.this.finish(); 
  45.             } 
  46.         }).create(); 
  47.         dialog.show(); 

Dialog dialog = new AlertDialog.Builder(AndroidUnleashed001Activity.this).setTitle("登录提示").setMessage("这里需要登录").setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // 点击确定转向登陆框 LayoutInflater factory = LayoutInflater.from(AndroidUnleashed001Activity.this); //得到自定义对话框 final View DialogView = factory.inflate(R.layout.pop, null); //创建对话框 AlertDialog dlg = new AlertDialog.Builder(AndroidUnleashed001Activity.this).setTitle("登录框").setView(DialogView).setPositiveButton("确定", new DialogInterface.OnClickListener() { private ProgressDialog myProgressDialog; @Override public void onClick(DialogInterface dialog, int which) { // 当输入完成后，点击确定开始登录。 myProgressDialog = ProgressDialog.show(AndroidUnleashed001Activity.this, "请等待", "正在为您登陆",true); new Thread(){ public void run(){ try{ sleep(3000); } catch(Exception e){ e.printStackTrace(); } finally{ myProgressDialog.dismiss(); } } }.start(); } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub AndroidUnleashed001Activity.this.finish(); } }).create(); dlg.show(); } }).setNegativeButton("退出", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub AndroidUnleashed001Activity.this.finish(); } }).create(); dialog.show();


9.ImageView的使用，代码如下：
Java代码

   1. myImageButton1.setImageDrawable(getResources().getDrawable(R.drawable.logo2)); 
   2.          
   3.         myImageButton1.setOnClickListener(new Button.OnClickListener(){ 
   4.  
   5.             @Override 
   6.             public void onClick(View v) { 
   7.                 // TODO Auto-generated method stub 
   8.                 Dialog mydialog = new AlertDialog.Builder(AndroidUnleashed003Activity.this).setTitle(" 提示") 
   9.                 .setMessage("我是ImageButton1").setPositiveButton("确定",new DialogInterface.OnClickListener() { 
  10.                      
  11.                     @Override 
  12.                     public void onClick(DialogInterface dialog, int which) { 
  13.                         // TODO Auto-generated method stub 
  14.                          
  15.                     } 
  16.                 }).create(); 
  17.                 mydialog.show(); 
  18.             }    
  19.         }); 

myImageButton1.setImageDrawable(getResources().getDrawable(R.drawable.logo2)); myImageButton1.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub Dialog mydialog = new AlertDialog.Builder(AndroidUnleashed003Activity.this).setTitle("提示") .setMessage("我是ImageButton1").setPositiveButton("确定",new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub } }).create(); mydialog.show(); } });

注意：如果要去掉ImageButton后面的背景色，使得ImageButton看起来更漂亮一些而不是有个边，则需要做：在XML文件中的属性里添加：“android:background="#00000000"”

10.Gallery的使用，拖动效果很炫，代码如下：
Java代码

   1.  Gallery myGallery = (Gallery)findViewById(R.id.myGallery);         
   2.         //添加ImageAdapter给Gallery对象         
   3.         myGallery.setAdapter(new ImageAdapter(this)); 
   4.         myGallery.setBackgroundResource(R.drawable.background); 
   5.         myGallery.setOnItemClickListener(new OnItemClickListener(){ 
   6.             @Override 
   7.             public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, 
   8.                     long arg3) { 
   9.                 // TODO Auto-generated method stub 
  10.                 Toast.makeText(AndroidUnleashed003Activity.this, "你选择了"+(arg2+1)+" 号图片 ", Toast.LENGTH_SHORT).show(); 
  11.             }            
  12.         });                 
  13.     } 
  14. //另外，需要存放图片，存放图片的容器，需要使用一个类实现，这个类是ImageAdapter，继承于 BaseAdapter。 
  15. public class ImageAdapter extends BaseAdapter{ 
  16.     private Context myContext; 
  17.     private Integer[] mImageIds = { 
  18.             R.drawable.ic_launcher, 
  19.             R.drawable.icon, 
  20.             R.drawable.logo, 
  21.             R.drawable.logo2, 
  22.             R.drawable.logo, 
  23.             R.drawable.ic_launcher, 
  24.             R.drawable.icon, 
  25.             R.drawable.logo, 
  26.     }; 
  27.     public ImageAdapter(Context c){ 
  28.         myContext = c; 
  29.     } 
  30.     @Override 
  31.     //获取图片的个数 
  32.     public int getCount() { 
  33.         // TODO Auto-generated method stub 
  34.         return mImageIds.length; 
  35.     } 
  36.     @Override 
  37.     //获取图片在库中的位置 
  38.     public Object getItem(int arg0) { 
  39.         // TODO Auto-generated method stub 
  40.         return arg0; 
  41.     } 
  42.  
  43.     @Override 
  44.     //获取图片在库中的位置 
  45.     public long getItemId(int arg0) { 
  46.         // TODO Auto-generated method stub 
  47.         return arg0; 
  48.     } 
  49.     @Override 
  50.     public View getView(int position, View arg1, ViewGroup arg2) { 
  51.         // TODO Auto-generated method stub 
  52.         //return null; 
  53.         ImageView myImageView = new ImageView(myContext); 
  54.         //给ImageView设置资源 
  55.         myImageView.setImageResource(mImageIds[position]); 
  56.         //设置布局图片以120*120显示 
  57.         //myImageView.setLayoutParams(new Gallery.LayoutParams(120,120)); 
  58.         //设置显示比例类型 
  59.         //myImageView.setScaleType(ImageView.ScaleType.FIT_CENTER); 
  60.         return myImageView; 
  61.     } 
  62. } 

Gallery myGallery = (Gallery)findViewById(R.id.myGallery); //添加ImageAdapter给Gallery对象 myGallery.setAdapter(new ImageAdapter(this)); myGallery.setBackgroundResource(R.drawable.background); myGallery.setOnItemClickListener(new OnItemClickListener(){ @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub Toast.makeText(AndroidUnleashed003Activity.this, "你选择了"+(arg2+1)+" 号图片 ", Toast.LENGTH_SHORT).show(); } }); } //另外，需要存放图片，存放图片的容器，需要使用一个类实现，这个类是ImageAdapter，继承于BaseAdapter。 public class ImageAdapter extends BaseAdapter{ private Context myContext; private Integer[] mImageIds = { R.drawable.ic_launcher, R.drawable.icon, R.drawable.logo, R.drawable.logo2, R.drawable.logo, R.drawable.ic_launcher, R.drawable.icon, R.drawable.logo, }; public ImageAdapter(Context c){ myContext = c; } @Override //获取图片的个数 public int getCount() { // TODO Auto-generated method stub return mImageIds.length; } @Override //获取图片在库中的位置 public Object getItem(int arg0) { // TODO Auto-generated method stub return arg0; } @Override //获取图片在库中的位置 public long getItemId(int arg0) { // TODO Auto-generated method stub return arg0; } @Override public View getView(int position, View arg1, ViewGroup arg2) { // TODO Auto-generated method stub //return null; ImageView myImageView = new ImageView(myContext); //给ImageView设置资源 myImageView.setImageResource(mImageIds[position]); //设置布局图片以120*120显示 //myImageView.setLayoutParams(new Gallery.LayoutParams(120,120)); //设置显示比例类型 //myImageView.setScaleType(ImageView.ScaleType.FIT_CENTER); return myImageView; } }

11.ImageSwitcher的使用，代码如下：
Java代码

   1. //首先需要实现接口： 
   2. extends Activity implements OnClickListener,ViewFactory 
   3. //具体操作： 
   4.         LinearLayout myMainView = new LinearLayout(this); 
   5.         //创建ImageSwitcher对象 
   6.         mySwitcher = new ImageSwitcher(this); 
   7.         myMainView.addView(mySwitcher); 
   8.         mySwitcher.setId(BUTTON_SWITCHER_ID); 
   9.         mySwitcher.setFactory(this); 
  10.         mySwitcher.setImageResource(mImageIds[index]); 
  11.          
  12.         setContentView(myMainView); 
  13.          
  14.         Button next = new Button(this); 
  15.         next.setId(BUTTON_DOWN_ID); 
  16.         next.setText("下一张"); 
  17.         next.setOnClickListener(this); 
  18.         //LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(200,200); 
  19.         myMainView.addView(next); 
  20.          
  21.         Button pre = new Button(this); 
  22.         pre.setId(BUTTON_UP_ID); 
  23.         pre.setText("上一张"); 
  24.         pre.setOnClickListener(this); 
  25.         myMainView.addView(pre); 
  26.          
  27.     } 
  28.  
  29.     private ImageSwitcher mySwitcher; 
  30.     private static int index = 0; 
  31.     //上一页，下一页的按钮索引和Switcher的对象ID 
  32.     private static final int BUTTON_DOWN_ID = 0x123456; 
  33.     private static final int BUTTON_UP_ID = 0x123457; 
  34.     private static final int BUTTON_SWITCHER_ID = 0x123458; 
  35.  
  36. //实现OnClickListener接口的函数 
  37.     @Override 
  38.     public void onClick(View v) { 
  39.         // TODO Auto-generated method stub 
  40.         switch(v.getId()){ 
  41.         case BUTTON_DOWN_ID: 
  42.             index++; 
  43.             if(index>= mImageIds.length){ 
  44.                 index = 0; 
  45.             } 
  46.             mySwitcher.setImageResource(mImageIds[index]); 
  47.             break; 
  48.         case BUTTON_UP_ID: 
  49.             index--; 
  50.             if(index<0){ 
  51.                 index = mImageIds.length-1; 
  52.             } 
  53.             mySwitcher.setImageResource(mImageIds[index]); 
  54.             break; 
  55.             default: 
  56.                 break; 
  57.         } 
  58.     } 
  59.  
  60.     //实现View.Factory接口的函数 
  61.     @Override 
  62.     public View makeView() { 
  63.         // TODO Auto-generated method stub 
  64.         return new ImageView(this); 
  65.     } 

//首先需要实现接口： extends Activity implements OnClickListener,ViewFactory //具体操作： LinearLayout myMainView = new LinearLayout(this); //创建ImageSwitcher对象 mySwitcher = new ImageSwitcher(this); myMainView.addView(mySwitcher); mySwitcher.setId(BUTTON_SWITCHER_ID); mySwitcher.setFactory(this); mySwitcher.setImageResource(mImageIds[index]); setContentView(myMainView); Button next = new Button(this); next.setId(BUTTON_DOWN_ID); next.setText("下一张"); next.setOnClickListener(this); //LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(200,200); myMainView.addView(next); Button pre = new Button(this); pre.setId(BUTTON_UP_ID); pre.setText("上一张"); pre.setOnClickListener(this); myMainView.addView(pre); } private ImageSwitcher mySwitcher; private static int index = 0; //上一页，下一页的按钮索引和Switcher的对象ID private static final int BUTTON_DOWN_ID = 0x123456; private static final int BUTTON_UP_ID = 0x123457; private static final int BUTTON_SWITCHER_ID = 0x123458; //实现OnClickListener接口的函数 @Override public void onClick(View v) { // TODO Auto-generated method stub switch(v.getId()){ case BUTTON_DOWN_ID: index++; if(index>= mImageIds.length){ index = 0; } mySwitcher.setImageResource(mImageIds[index]); break; case BUTTON_UP_ID: index--; if(index<0){ index = mImageIds.length-1; } mySwitcher.setImageResource(mImageIds[index]); break; default: break; } } //实现View.Factory接口的函数 @Override public View makeView() { // TODO Auto-generated method stub return new ImageView(this); }

12.GridView的使用，代码如下：
Java代码

   1. //这个和Gallery的使用相似，也需要存图片在BaseAdapter中。 
   2.         GridView myGridView = (GridView)findViewById(R.id.gridView1); 
   3.         myGridView.setAdapter(new ImageAdapter(this)); 
   4.          
   5.         myGridView.setBackgroundResource(R.drawable.background); 
   6.         myGridView.setOnItemClickListener(new OnItemClickListener(){ 
   7.  
   8.             @Override 
   9.             public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, 
  10.                     long arg3) { 
  11.                 // TODO Auto-generated method stub 
  12.                 Toast.makeText(AndroidUnleashed003Activity.this, "你选择了"+(arg2+1)+" 号图片 ", Toast.LENGTH_SHORT).show(); 
  13.             } 
  14.              
  15.         }); 
  16.     } 

//这个和Gallery的使用相似，也需要存图片在BaseAdapter中。 GridView myGridView = (GridView)findViewById(R.id.gridView1); myGridView.setAdapter(new ImageAdapter(this)); myGridView.setBackgroundResource(R.drawable.background); myGridView.setOnItemClickListener(new OnItemClickListener(){ @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub Toast.makeText(AndroidUnleashed003Activity.this, "你选择了"+(arg2+1)+" 号图片 ", Toast.LENGTH_SHORT).show(); } }); }

12.ScrollView的使用，代码如下：
Java代码

   1. //要垂直滚动，使用ScrollView要水平滚动使用HorizontalScrollView。 
   2.         myLayout = (LinearLayout)findViewById(R.id.myLayout); 
   3.         myScllorView = (ScrollView)findViewById(R.id.myScrollView); 
   4.         Button myButton = (Button)findViewById(R.id.myButton); 
   5.          
   6.         myButton.setOnClickListener(new Button.OnClickListener(){ 
   7.             private int mIndex = -1; 
   8.             @Override 
   9.             public void onClick(View v) { 
  10.                 // TODO Auto-generated method stub 
  11.                 TextView myTextView = new TextView(ScrollerViewActivity.this); 
  12.                 myTextView.setText("Text View"+mIndex); 
  13.                 LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT); 
  14.                 //增加一个TextView到现行布局中 
  15.                 myLayout.addView(myTextView,p); 
  16.                  
  17.                 Button myButtonView = new Button(ScrollerViewActivity.this); 
  18.                 myButtonView.setText("Button "+mIndex++); 
  19.                 //增加一个Button到线性布局中 
  20.                 myLayout.addView(myButtonView,p); 
  21.                 //改变默认焦点切换 
  22.                 //myButtonView.setOnKeyListener(newButtonKeyListener); 
  23.                 //投递一个消息进行滚动 
  24.                 //myHandler.post(myScolltoBottom); 
  25.             } 
  26.              
  27.         }); 
  28.     } 

//要垂直滚动，使用ScrollView要水平滚动使用HorizontalScrollView。 myLayout = (LinearLayout)findViewById(R.id.myLayout); myScllorView = (ScrollView)findViewById(R.id.myScrollView); Button myButton = (Button)findViewById(R.id.myButton); myButton.setOnClickListener(new Button.OnClickListener(){ private int mIndex = -1; @Override public void onClick(View v) { // TODO Auto-generated method stub TextView myTextView = new TextView(ScrollerViewActivity.this); myTextView.setText("Text View"+mIndex); LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT); //增加一个TextView到现行布局中 myLayout.addView(myTextView,p); Button myButtonView = new Button(ScrollerViewActivity.this); myButtonView.setText("Button "+mIndex++); //增加一个Button到线性布局中 myLayout.addView(myButtonView,p); //改变默认焦点切换 //myButtonView.setOnKeyListener(newButtonKeyListener); //投递一个消息进行滚动 //myHandler.post(myScolltoBottom); } }); }

13.ProgressBar的使用，代码如下：

ProgressBarStyleHorizontal（长形进度条）

ProgressBarStyleLarge（圆形进度条）
Java代码

   1. public class ProgressBarA extends Activity { 
   2.     protected static final int GUI_STOP_NOTIFIER = 0x108; 
   3.     protected static final int GUI_THREADING_NOTIFIER = 0x109; 
   4.     private ProgressBar myProgress1; 
   5.     private ProgressBar myProgress2; 
   6.     private Button myButton; 
   7.     private int intCounter; 
   8.     /** Called when the activity is first created. */ 
   9.     @Override 
  10.     public void onCreate(Bundle savedInstanceState) { 
  11.         super.onCreate(savedInstanceState); 
  12.         //设置窗口模式，因为需要显示进度条在标题栏 
  13.         requestWindowFeature(Window.FEATURE_PROGRESS); 
  14.         setProgressBarVisibility(true); 
  15.         setContentView(R.layout.main); 
  16.         //取得ProgressBar 
  17.         myProgress1 = (ProgressBar)findViewById(R.id.myProgressBar01); 
  18.         myProgress2 = (ProgressBar)findViewById(R.id.myProgressBar02); 
  19.         myButton = (Button)findViewById(R.id.myButton); 
  20.          
  21.         myProgress1.setIndeterminate(false); 
  22.         myProgress2.setIndeterminate(false); 
  23.          
  24.         myButton.setOnClickListener(new Button.OnClickListener(){ 
  25.  
  26.             @Override 
  27.             public void onClick(View v) { 
  28.                 // TODO Auto-generated method stub 
  29.                 myProgress1.setVisibility(View.VISIBLE); 
  30.                 myProgress2.setVisibility(View.VISIBLE); 
  31.                  
  32.                 myProgress1.setMax(100); 
  33.                 myProgress1.setProgress(0); 
  34.                 myProgress2.setProgress(0); 
  35.                  
  36.                 //通过线程来改变Progress的值 
  37.                  
  38.                 new Thread(new Runnable(){ 
  39.  
  40.                     @Override 
  41.                     public void run() { 
  42.                         // TODO Auto-generated method stub 
  43.                         for(int i=0;i<10;i++){ 
  44.                             try{ 
  45.                                 intCounter=(i+1)*20; 
  46.                                 Thread.sleep(1000); 
  47.                                 if(i==4){ 
  48.                                     Message m = new Message(); 
  49.                                     m.what = ProgressBarA.GUI_STOP_NOTIFIER; 
  50.                                     ProgressBarA.this.myMessageHandler.sendMessage(m); 
  51.                                     break; 
  52.                                 } 
  53.                                 else{ 
  54.                                     Message m = new Message(); 
  55.                                     m.what = ProgressBarA.GUI_THREADING_NOTIFIER; 
  56.                                     ProgressBarA.this.myMessageHandler.sendMessage(m); 
  57.                                 } 
  58.                             } 
  59.                             catch(Exception e){ 
  60.                                 e.printStackTrace(); 
  61.                             } 
  62.                         } 
  63.                     } 
  64.                      
  65.                 }).start(); 
  66.             } 
  67.              
  68.         }); 
  69.     } 
  70.     Handler myMessageHandler = new Handler(){ 
  71.         public void handleMessage(Message msg){ 
  72.             switch(msg.what){ 
  73.             case ProgressBarA.GUI_STOP_NOTIFIER: 
  74.                 //myProgress1.setVisibility(View.GONE); 
  75.                 //myProgress2.setVisibility(View.GONE); 
  76.                 //Thread.currentThread().interrupt(); 
  77.                 break; 
  78.             case ProgressBarA.GUI_THREADING_NOTIFIER: 
  79.                 if(!Thread.currentThread().isInterrupted()){ 
  80.                 myProgress1.setProgress(intCounter); 
  81.                 myProgress1.setProgress(intCounter); 
  82.                 setProgress(intCounter*100);//设置标题栏中前景的一个进度条进度值 
  83.                 //setSecondaryProgress(intCounter*100);//设置标题栏中后面的一个进度条进度值 
  84.                 //Thread.currentThread().interrupt(); 
  85.                 } 
  86.                 break; 
  87.         } 
  88.             super.handleMessage(msg); 
  89.     } 
  90.     }; 
  91. } 

public class ProgressBarA extends Activity { protected static final int GUI_STOP_NOTIFIER = 0x108; protected static final int GUI_THREADING_NOTIFIER = 0x109; private ProgressBar myProgress1; private ProgressBar myProgress2; private Button myButton; private int intCounter; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //设置窗口模式，因为需要显示进度条在标题栏 requestWindowFeature(Window.FEATURE_PROGRESS); setProgressBarVisibility(true); setContentView(R.layout.main); //取得ProgressBar myProgress1 = (ProgressBar)findViewById(R.id.myProgressBar01); myProgress2 = (ProgressBar)findViewById(R.id.myProgressBar02); myButton = (Button)findViewById(R.id.myButton); myProgress1.setIndeterminate(false); myProgress2.setIndeterminate(false); myButton.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub myProgress1.setVisibility(View.VISIBLE); myProgress2.setVisibility(View.VISIBLE); myProgress1.setMax(100); myProgress1.setProgress(0); myProgress2.setProgress(0); //通过线程来改变Progress的值 new Thread(new Runnable(){ @Override public void run() { // TODO Auto-generated method stub for(int i=0;i<10;i++){ try{ intCounter=(i+1)*20; Thread.sleep(1000); if(i==4){ Message m = new Message(); m.what = ProgressBarA.GUI_STOP_NOTIFIER; ProgressBarA.this.myMessageHandler.sendMessage(m); break; } else{ Message m = new Message(); m.what = ProgressBarA.GUI_THREADING_NOTIFIER; ProgressBarA.this.myMessageHandler.sendMessage(m); } } catch(Exception e){ e.printStackTrace(); } } } }).start(); } }); } Handler myMessageHandler = new Handler(){ public void handleMessage(Message msg){ switch(msg.what){ case ProgressBarA.GUI_STOP_NOTIFIER: //myProgress1.setVisibility(View.GONE); //myProgress2.setVisibility(View.GONE); //Thread.currentThread().interrupt(); break; case ProgressBarA.GUI_THREADING_NOTIFIER: if(!Thread.currentThread().isInterrupted()){ myProgress1.setProgress(intCounter); myProgress1.setProgress(intCounter); setProgress(intCounter*100);//设置标题栏中前景的一个进度条进度值 //setSecondaryProgress(intCounter*100);//设置标题栏中后面的一个进度条进度值 //Thread.currentThread().interrupt(); } break; } super.handleMessage(msg); } }; }


14.SeekBar的使用，代码如下：
Java代码

   1. implements SeekBar.OnSeekBarChangeListener 
   2. //实现OnSeekBarChangeListener接口 
   3.     public void onProgressChanged(SeekBar seekBar, int progress, 
   4.             boolean fromUser) { 
   5.         // TODO Auto-generated method stub 
   6.         myProgressText.setText("当前值："+ progress); 
   7.     } 
   8.     @Override 
   9.     public void onStartTrackingTouch(SeekBar seekBar) { 
  10.         // TODO Auto-generated method stub 
  11.         myTrackingText.setText("正在调节"); 
  12.     } 
  13.     @Override 
  14.     public void onStopTrackingTouch(SeekBar seekBar) { 
  15.         // TODO Auto-generated method stub 
  16.         myTrackingText.setText("停止调节"); 
  17.     } 
  18. } 

implements SeekBar.OnSeekBarChangeListener //实现OnSeekBarChangeListener接口 public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { // TODO Auto-generated method stub myProgressText.setText("当前值："+ progress); } @Override public void onStartTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub myTrackingText.setText("正在调节"); } @Override public void onStopTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub myTrackingText.setText("停止调节"); } }

15.Notification、NotificationManager的使用，代码如下：
Java代码

   1.      myIntent = new Intent(Notification01.this,Notification02.class); 
   2.      //主要是设置点击通知时显示内容的类 
   3.      myPendingIntent = PendingIntent.getActivity(Notification01.this, 0, myIntent, 0); 
   4.      //构造Notification对象 
   5.      myNotification = new Notification(); 
   6.      myButton1.setOnClickListener(new  Button.OnClickListener(){ 
   7. @Override 
   8. public void onClick(View v) { 
   9.     // TODO Auto-generated method stub 
  10.     //设置通知在状态栏显示的图标 
  11.     myNotification.icon = R.drawable.ic_launcher; 
  12.     myNotification.tickerText = "Button1的通知内容..."; 
  13.     //通知时发出默认的声音 
  14.     myNotification.defaults = Notification.DEFAULT_SOUND; 
  15.     //设置通知显示的参数 
  16.     myNotification.setLatestEventInfo(Notification01.this,"Button1","Button1通知",myPendingIntent); 
  17.     //可以理解为执行这个通知 
  18.     myNotificationManager.notify(0,myNotification); 
  19. }    
  20.      }); 

myIntent = new Intent(Notification01.this,Notification02.class); //主要是设置点击通知时显示内容的类 myPendingIntent = PendingIntent.getActivity(Notification01.this, 0, myIntent, 0); //构造Notification对象 myNotification = new Notification(); myButton1.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub //设置通知在状态栏显示的图标 myNotification.icon = R.drawable.ic_launcher; myNotification.tickerText = "Button1的通知内容..."; //通知时发出默认的声音 myNotification.defaults = Notification.DEFAULT_SOUND; //设置通知显示的参数 myNotification.setLatestEventInfo(Notification01.this,"Button1","Button1 通知",myPendingIntent); //可以理解为执行这个通知 myNotificationManager.notify(0,myNotification); } });

16.ProgressDialog的使用，代码如下：
Java代码

   1.      myButton01 = (Button)findViewById(R.id.Button1); 
   2.      myButton02 = (Button)findViewById(R.id.Button2); 
   3.      myButton01.setOnClickListener(new Button.OnClickListener(){ 
   4. @Override 
   5. public void onClick(View v) { 
   6.     // TODO Auto-generated method stub 
   7.     //创建ProgressDialog对象 
   8.     myProgressDialog = new ProgressDialog(ProgressDialogActivity.this); 
   9.     //设置进度条风格，风格为圆形的，旋转的 
  10.     myProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER); 
  11.     //设置ProgressDialog标题 
  12.     myProgressDialog.setTitle("提示"); 
  13.     //设置ProgressDialog提示信息 
  14.     myProgressDialog.setMessage("这是一个圆形进度条对话框"); 
  15.     //设置myProgressDialog标题图标 
  16.     myProgressDialog.setIcon(R.drawable.ic_launcher); 
  17.     //设置myProgressDialog的进度条是否不明确 
  18.     myProgressDialog.setIndeterminate(false); 
  19.     //设置myProgressDialog是否可以按退回键取消 
  20.     myProgressDialog.setCancelable(true); 
  21.     //设置myProgressDialog的一个Button 
  22.     myProgressDialog.setButton("确定", new DialogInterface.OnClickListener() { 
  23.          
  24.         @Override 
  25.         public void onClick(DialogInterface dialog, int which) { 
  26.             // TODO Auto-generated method stub 
  27.             //点击确定取消对话框 
  28.             dialog.cancel(); 
  29.         } 
  30.     }); 
  31.     //让ProgressDialog显示 
  32.     myProgressDialog.show(); 
  33. }    
  34.      }); 
  35.       
  36.      myButton02.setOnClickListener(new Button.OnClickListener(){ 
  37. @Override 
  38. public void onClick(View v) { 
  39.     // TODO Auto-generated method stub 
  40.     myCount = 0; 
  41.     //创建ProgressDialog对象 
  42.     myProgressDialog = new ProgressDialog(ProgressDialogActivity.this); 
  43.     //设置进度条风格，风格为长形的。 
  44.     myProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); 
  45.     //设置ProgressDialog标题 
  46.     myProgressDialog.setTitle("提示"); 
  47.     //设置ProgressDialog提示信息 
  48.     myProgressDialog.setMessage("这是一个长形进度条对话框"); 
  49.     //设置myProgressDialog标题图标 
  50.     myProgressDialog.setIcon(R.drawable.ic_launcher); 
  51.     //设置myProgressDialog进度条进度 
  52.     myProgressDialog.setProgress(100); 
  53.     //设置myProgressDialog的进度条是否不明确 
  54.     myProgressDialog.setIndeterminate(false); 
  55.     //设置myProgressDialog是否可以按退回键取消 
  56.     myProgressDialog.setCancelable(true); 
  57.     //设置myProgressDialog的一个Button 
  58.     myProgressDialog.setButton("确定", new DialogInterface.OnClickListener() { 
  59.          
  60.         @Override 
  61.         public void onClick(DialogInterface dialog, int which) { 
  62.             // TODO Auto-generated method stub 
  63.             //点击确定取消对话框 
  64.             dialog.cancel(); 
  65.         } 
  66.     }); 
  67.     //让ProgressDialog显示 
  68.     myProgressDialog.show(); 
  69.        new Thread(){ 
  70.         public void run(){ 
  71.             try{ 
  72.                 while(myCount <= 100){ 
  73.                     //由线程来控制进度 
  74.                     myProgressDialog.setProgress(myCount++); 
  75.                     Thread.sleep(100); 
  76.                 } 
  77.                 myProgressDialog.cancel(); 
  78.             } 
  79.             catch(InterruptedException e){ 
  80.                 myProgressDialog.cancel(); 
  81.             } 
  82.         } 
  83.        }.start(); 
  84. }    
  85.      }); 

myButton01 = (Button)findViewById(R.id.Button1); myButton02 = (Button)findViewById(R.id.Button2); myButton01.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub //创建ProgressDialog对象 myProgressDialog = new ProgressDialog(ProgressDialogActivity.this); //设置进度条风格，风格为圆形的，旋转的 myProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER); //设置ProgressDialog标题 myProgressDialog.setTitle("提示"); //设置ProgressDialog提示信息 myProgressDialog.setMessage("这是一个圆形进度条对话框"); //设置myProgressDialog标题图标 myProgressDialog.setIcon(R.drawable.ic_launcher); //设置myProgressDialog的进度条是否不明确 myProgressDialog.setIndeterminate(false); //设置myProgressDialog是否可以按退回键取消 myProgressDialog.setCancelable(true); //设置myProgressDialog的一个Button myProgressDialog.setButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub //点击确定取消对话框 dialog.cancel(); } }); //让ProgressDialog显示 myProgressDialog.show(); } }); myButton02.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub myCount = 0; //创建ProgressDialog对象 myProgressDialog = new ProgressDialog(ProgressDialogActivity.this); //设置进度条风格，风格为长形的。 myProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); //设置ProgressDialog标题 myProgressDialog.setTitle("提示"); //设置ProgressDialog提示信息 myProgressDialog.setMessage("这是一个长形进度条对话框"); //设置myProgressDialog标题图标 myProgressDialog.setIcon(R.drawable.ic_launcher); //设置myProgressDialog进度条进度 myProgressDialog.setProgress(100); //设置myProgressDialog的进度条是否不明确 myProgressDialog.setIndeterminate(false); //设置myProgressDialog是否可以按退回键取消 myProgressDialog.setCancelable(true); //设置myProgressDialog的一个Button myProgressDialog.setButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub //点击确定取消对话框 dialog.cancel(); } }); //让ProgressDialog显示 myProgressDialog.show(); new Thread(){ public void run(){ try{ while(myCount <= 100){ //由线程来控制进度 myProgressDialog.setProgress(myCount++); Thread.sleep(100); } myProgressDialog.cancel(); } catch(InterruptedException e){ myProgressDialog.cancel(); } } }.start(); } });

17.TabWidget的使用，代码如下：

要使用TabWidget，首先要了解TabHost，TabHost是一个用来存放Tab标签的容器。
Java代码

   1. public class TabHostActivity extends TabActivity { 
   2.     TabHost myTabHost; 
   3.  
   4.     /** Called when the activity is first created. */ 
   5.     @Override 
   6.     public void onCreate(Bundle savedInstanceState) { 
   7.         super.onCreate(savedInstanceState); 
   8.         setContentView(R.layout.main); 
   9.         //获取TabHost对象 
  10.         myTabHost = getTabHost(); 
  11.         //为TabHost添加标签，新建一个newTabSpec(newTabSpec)设置其标签和图标 (setIndicator)设置内容(setContent) 
  12.         myTabHost.addTab(myTabHost.newTabSpec("tabHost1").setIndicator("TAB 1", getResources().getDrawable(R.drawable.ic_launcher)).setContent(R.id.myTabContent1)); 
  13.         myTabHost.addTab(myTabHost.newTabSpec("tabHost2").setIndicator("TAB 2", getResources().getDrawable(R.drawable.ic_launcher)).setContent(R.id.myTabContent2)); 
  14.         myTabHost.addTab(myTabHost.newTabSpec("tabHost3").setIndicator("TAB 3", getResources().getDrawable(R.drawable.ic_launcher)).setContent(R.id.myTabContent3)); 
  15.         //设置TabHost的背景颜色 
  16.         myTabHost.setBackgroundColor(Color.argb(150, 22, 70, 150)); 
  17.         //设置当前显示哪个标签 
  18.         myTabHost.setCurrentTab(1); 
  19.         //标签切换事件处理setOnTabChangedListener 
  20.         myTabHost.setOnTabChangedListener(new TabHost.OnTabChangeListener() { 
  21.              
  22.             @Override 
  23.             public void onTabChanged(String tabId) { 
  24.                 // TODO Auto-generated method stub 
  25.                 Dialog dialog = new AlertDialog.Builder(TabHostActivity.this).setTitle(" 提示").setMessage("当前选中"+tabId).setPositiveButton("确定", new DialogInterface.OnClickListener() { 
  26.                      
  27.                     @Override 
  28.                     public void onClick(DialogInterface dialog, int which) { 
  29.                         // TODO Auto-generated method stub 
  30.                         dialog.cancel(); 
  31.                     } 
  32.                 }).create(); 
  33.                 dialog.show(); 
  34.             } 
  35.         }); 
  36.     } 
  37. }