Android监听器(2)

        public void onChange(boolean selfChange) { 
            ContentResolver resolver = getContentResolver(); 
            Uri uri = Uri.parse("content://cn.itcast.provider.itcast/person"); 
            Cursor cursor = resolver.query(uri, new String[] { "id", "name", "phone", "balance" }, null, null, "id DESC LIMIT 1"); 
            while (cursor.moveToNext()) { 
                System.out.print(cursor.getString(0) + " "); 
                System.out.print(cursor.getString(1) + " "); 
                System.out.print(cursor.getString(2) + " "); 
                System.out.println(cursor.getString(3)); 
            } 
        } 
    } 
} 
 

监听发送短信

    1.Android系统提供了Provider对短信进行查询，当发出短信时也会发送更改通知

    2.定义一个Observer监听"content://sms"

    3.在onChange()方法中查询用户发送的短信"content://sms/outbox"

    4.短信发送信息存放在数据库 date/date/com.android.providers.telephony

    5.需要权限<uses-permission android:name="android.permission.READ_SMS" />

示例：

view plain
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    getContentResolver().registerContentObserver(Uri.parse("content://sms"), true, new SmsObserver(new Handler())); 
} 
   //监听发送的短信 
private final class SmsObserver extends ContentObserver { 
    public SmsObserver(Handler handler) { 
        super(handler); 
    } 
 
    public void onChange(boolean selfChange) { 
        ContentResolver resolver = getContentResolver(); 
        //查到发出的短信 
        Uri uri = Uri.parse("content://sms/outbox");