自定义Dialog

先看图：



布局search_dialog.xml：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <ImageButton android:id="@+id/btn_search"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:layout_alignParentTop="true"
    android:src="@drawable/search"
    />
    <EditText android:id="@+id/et_search"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_toLeftOf="@id/btn_search"
    />
    <ListView android:id="@+id/listview"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@id/et_search"
    android:listSelector="@drawable/button_blue"
    />
</RelativeLayout>

应用之：

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

import com.ql.activity.R;

public class SearchDialog extends Dialog{
	private Context context;
	private EditText et_search;
	private ImageButton btn_search;
	private ListView listview;
	public SearchDialog(Context context) {
		super(context);
		// TODO Auto-generated constructor stub
		this.context = context;
	}
	public SearchDialog(Context context, int theme) {  
        super(context, theme);  
        this.context = context;
    }  

	@Override  
	protected void onCreate(Bundle savedInstanceState) {  
	        super.onCreate(savedInstanceState);  
	          
	        setContentView(R.layout.search_dialog); 
	        
	        et_search  = (EditText)findViewById(R.id.et_search);
	        btn_search  = (ImageButton)findViewById(R.id.btn_search);
	        listview=(ListView)findViewById(R.id.listview);
	        ArrayList<Map<String,String>> data=new ArrayList<Map<String,String>>();
			Map<String,String> map=null;
			for(int i=0;i<10;i++){
				map=new HashMap<String,String>();
				map.put("simple_item_1", "item"+i);
				data.add(map);
			}
			int resource=R.layout.row_simple_list_item_1;
			String[] from={"simple_item_1"};
			int[] to={R.id.simple_item_1};
			SimpleAdapter adapter=new SimpleAdapter(context, data, resource, from, to);
			listview.setAdapter(adapter);
			listview.setOnItemClickListener(new OnItemClickListener() {
				
				@Override
				public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
					// TODO Auto-generated method stub
					TextView tv=(TextView)v.findViewById(R.id.simple_item_1);
					et_search.setText(tv.getText());
				}
			});
			btn_search.setOnClickListener(new View.OnClickListener() {
				
				@Override
				public void onClick(View v) {
					// TODO Auto-generated method stub
					Toast.makeText(context, "searching", Toast.LENGTH_SHORT).show();
				}
			});
			
	}
}

试用之：
SearchDialog dialog=new SearchDialog(Test_3_Activity.this,R.style.Theme_NoTitleDialog);
dialog.show();
上面的代码试用的是带有Theme的第2个构造函数，这样可以指定Dialog的样式

<style name="Theme_NoTitleDialog" parent="android:Theme.Dialog">
      <item name="android:windowNoTitle">true</item>
</style> 

若使用第一个构造函数，则需要带有title：
SearchDialog dialog=new SearchDialog(Test_3_Activity.this);
dialog.setTitle("Search Item");
dialog.show();
效果如下：



http://gundumw100.iteye.com/admin/blogs/869742

任意地方显示对话框

AlertDialog.Builder builder = new AlertDialog.Builder(this);
   LayoutInflater inf = getLayoutInflater();
    View layout = inf.inflate(R.layout.main, null);
    builder.setView(layout);
    builder.setTitle("Add to Home screen");
AlertDialog dialog = builder.create();
    WindowManager.LayoutParams WMLP = dialog.getWindow().getAttributes();
    int dialogOriginalHeight = WMLP.height;
WMLP.height += 750;
Log.i("XnY", "x="+WMLP.x+", y="+WMLP.y);
WMLP.x = -10;   //x position
WMLP.y = -10;   //y position
Log.i("XnY", "x="+WMLP.x+", y="+WMLP.y);
dialog.getWindow().setAttributes(WMLP);
Log.i("POSITION", "POS::HEIGHT:"+WMLP.height);
dialog.show();

改变Android 对话框位置及边框
关键是取得Window
        Window w=getWindow();

修改边框：
        w.setBackgroundDrawableResource(rc);
        rc为资源ID

改变位置：
        WindowManager.LayoutParams wl = w.getAttributes();
        wl.x = xNewPos;
        wl.y = yNewPos;
        w.setAttributes(wl);
1、对话框缺省居中wl.x=0,wl.y=0
     新坐标 x小于0左移，大于0右移；y小于0上移，大于0下移
2、无论x,y设什么值，对话框也不会移出到屏幕外。
     我试过x，y设成-1000，显示在左上角，没移出去。

自定义对话框的大小

WindowManager m = getWindowManager();
Display d = m.getDefaultDisplay();	//为获取屏幕宽、高

LayoutParams p = getWindow().getAttributes();  //获取对话框当前的参数值
p.height = (int) (d.getHeight() * 0.6);   //高度设置为屏幕的0.6
p.width = (int) (d.getWidth() * 0.95);    //宽度设置为屏幕的0.95

getWindow().setAttributes(p);     //设置生效

Android dialog 全屏

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="Transparent">  
    <item name="android:windowBackground">@color/transparent_background</item>  
    <item name="android:windowNoTitle">true</item>  
    <item name="android:windowFullscreen">true</item>
    <item name="android:windowIsTranslucent">true</item>     
    <item name="android:windowAnimationStyle">@+android:style/Animation.Translucent</item>  
  </style>
</resources>

其中transparent_background为颜色值：#50000000，透明度为50
然后：
final Dialog dialog = new Dialog(this,R.style.Transparent);