Android中的日历读写操作!!

407827531

浏览: 1080614 次
性别:
来自: 厦门

最近访客更多访客>>

WangJiaX

prettywave

tlyc520

erroragain

博主相关

博客

微博

相册

留言

关于我

文章分类

社区版块

存档分类

博客分类：

Android

Android Gmail XML OS .net

推荐安卓开发神器（里面有各种UI特效和android代码库实例）

今天给大家分享一下Android中一些自带日历的操作方法,这里主要用到了ContentProiver的知识.如果大家不明白ContentProvider建议先查一下资料，知道它是干什么的。这样更容易下面的例子.

好了废话不说,这里提个醒，Android中的日历,只有真机才有，模拟上是没有的，所以测试环境一定要真机！！

因为日历是系统自带的，所以我们读写它一定要申请权限,也就是在AndroidManifest.xml加如下两行代码(一个读一个写):

view plaincopy to clipboardprint?
<uses-permission android:name="android.permission.READ_CALENDAR"/>   
<uses-permission android:name="android.permission.WRITE_CALENDAR"/>

Android中日历用了三个URL,分别是日历用户的URL,事件的URL，事件提醒URL,三个URL在Android2.1之前是如下的样子：

view plaincopy to clipboardprint?
calanderURL = "content://calendar/calendars";  
calanderEventURL = "content://calendar/events";  
calanderRemiderURL= "content://calendar/reminders";

但是在Android2.2版本以后,三个URL有了改变，变成如下的样子:

view plaincopy to clipboardprint?
calanderURL = "content://com.android.calendar/calendars";  
calanderEventURL = "content://com.android.calendar/events";  
calanderRemiderURL = "content://com.android.calendar/reminders

";

还是老样子,为了让大家更好的理解，我写了一个简单的Demo,大家按照我的步骤一步一步的来:

第一步:新建一个Android工程命名为CalendarDemo.

第二步:修改main.xml布局文件,增加了三个按钮,代码如下:

view plaincopy to clipboardprint?
<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:orientation="vertical"  
    android:layout_width="fill_parent"  
    android:layout_height="fill_parent"  
    >  
   <TextView    
    android:layout_width="fill_parent"   
        android:layout_height="wrap_content"   
    android:text="@string/hello"  
    />  
   <Button  
        android:id="@+id/readUserButton"  
        android:layout_width="fill_parent"   
    android:layout_height="wrap_content"   
    android:text="Get a User"  
    />     
    <Button  
        android:id="@+id/readEventButton"  
        android:layout_width="fill_parent"   
    android:layout_height="wrap_content"   
    android:text="Get a Event"  
    />  
     <Button  
        android:id="@+id/writeEventButton"  
        android:layout_width="fill_parent"   
    android:layout_height="wrap_content"   
    android:text="Input a Event"  
    />  
</LinearLayout>

第三步:修改主核心程序CalendarDemo.java，代码如下:

view plaincopy to clipboardprint?
package com.tutor.calendardemo;  
  
import java.util.Calendar;  
  
import android.app.Activity;  
import android.content.ContentValues;  
import android.database.Cursor;  
import android.net.Uri;  
import android.os.Build;  
import android.os.Bundle;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
import android.widget.Toast;  
  
public class CalendarDemo extends Activity implements OnClickListener {  
    private Button mReadUserButton;  
    private Button mReadEventButton;  
    private Button mWriteEventButton;  
      
    private static String calanderURL = "";  
    private static String calanderEventURL = "";  
    private static String calanderRemiderURL = "";  
    //为了兼容不同版本的日历,2.2以后url发生改变  
    static{  
        if(Integer.parseInt(Build.VERSION.SDK) >= 8){  
            calanderURL = "content://com.android.calendar/calendars";  
            calanderEventURL = "content://com.android.calendar/events";  
            calanderRemiderURL = "content://com.android.calendar/reminders";  
  
        }else{  
            calanderURL = "content://calendar/calendars";  
            calanderEventURL = "content://calendar/events";  
            calanderRemiderURL = "content://calendar/reminders";          
        }  
    }  
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);  
          
        setupViews();  
    }  
      
    private void setupViews(){  
        mReadUserButton = (Button)findViewById(R.id.readUserButton);  
        mReadEventButton = (Button)findViewById(R.id.readEventButton);  
        mWriteEventButton = (Button)findViewById(R.id.writeEventButton);  
        mReadUserButton.setOnClickListener(this);  
        mReadEventButton.setOnClickListener(this);  
        mWriteEventButton.setOnClickListener(this);  
    }  
      
    @Override  
    public void onClick(View v) {  
        if(v == mReadUserButton){  
              
            Cursor userCursor = getContentResolver().query(Uri.parse(calanderURL), null,   
                    null, null, null);  
            if(userCursor.getCount() > 0){  
                userCursor.moveToFirst();  
                String userName = userCursor.getString(userCursor.getColumnIndex("name"));  
                Toast.makeText(CalendarDemo.this, userName, Toast.LENGTH_LONG).show();  
            }  
        }else if(v == mReadEventButton){  
            Cursor eventCursor = getContentResolver().query(Uri.parse(calanderEventURL), null,   
                    null, null, null);  
            if(eventCursor.getCount() > 0){  
                eventCursor.moveToLast();  
                String eventTitle = eventCursor.getString(eventCursor.getColumnIndex("title"));  
                Toast.makeText(CalendarDemo.this, eventTitle, Toast.LENGTH_LONG).show();  
            }  
        }else if(v == mWriteEventButton){  
            //获取要出入的gmail账户的id  
            String calId = "";  
            Cursor userCursor = getContentResolver().query(Uri.parse(calanderURL), null,   
                    null, null, null);  
            if(userCursor.getCount() > 0){  
                userCursor.moveToFirst();  
                calId = userCursor.getString(userCursor.getColumnIndex("_id"));  
                  
            }  
            ContentValues event = new ContentValues();  
            event.put("title", "与苍井空小姐动作交流");  
            event.put("description", "Frankie受空姐邀请,今天晚上10点以后将在Sheraton动作交流.lol~");  
            //插入hoohbood@gmail.com这个账户  
            event.put("calendar_id",calId);  
              
            Calendar mCalendar = Calendar.getInstance();  
            mCalendar.set(Calendar.HOUR_OF_DAY,10);  
            long start = mCalendar.getTime().getTime();  
            mCalendar.set(Calendar.HOUR_OF_DAY,11);  
            long end = mCalendar.getTime().getTime();  
              
            event.put("dtstart", start);  
            event.put("dtend", end);  
            event.put("hasAlarm",1);  
              
            Uri newEvent = getContentResolver().insert(Uri.parse(calanderEventURL), event);  
            long id = Long.parseLong( newEvent.getLastPathSegment() );  
            ContentValues values = new ContentValues();  
            values.put( "event_id", id );  
            //提前10分钟有提醒  
            values.put( "minutes", 10 );  
            getContentResolver().insert(Uri.parse(calanderRemiderURL), values);  
            Toast.makeText(CalendarDemo.this, "插入事件成功!!!", Toast.LENGTH_LONG).show();  
        }  
    }  
}

第四步:在AndroidManifest.xml中申请权限,代码如下:

view plaincopy to clipboardprint?
<?xml version="1.0" encoding="utf-8"?>  
<manifest xmlns:android="http://schemas.android.com/apk/res/android"  
      package="com.tutor.calendardemo"  
      android:versionCode="1"  
      android:versionName="1.0">  
    <application android:icon="@drawable/icon" android:label="@string/app_name">  
        <activity android:name=".CalendarDemo"  
                  android:label="@string/app_name">  
            <intent-filter>  
                <action android:name="android.intent.action.MAIN" />  
                <category android:name="android.intent.category.LAUNCHER" />  
            </intent-filter>  
        </activity>  
    </application>  
    <uses-sdk android:minSdkVersion="7" />  
    <uses-permission android:name="android.permission.READ_CALENDAR"/>   
    <uses-permission android:name="android.permission.WRITE_CALENDAR"/>   
</manifest>

第五步:运行上述Android工程,查看效果：