ContentObserver 用法

public class ScreenTest extends Activity { class SmsContent extends ContentObserver{ private Cursor cursor = null; public SmsContent(Handler handler) { super(handler); } /** * @Description 当短信表发送改变时，调用该方法 * 需要两种权限 * android.permission.READ_SMS读取短信 * android.permission.WRITE_SMS写短信 * @Author Snake * @Date 2010-1-12 */ @Override public void onChange(boolean selfChange) { // TODO Auto-generated method stub super.onChange(selfChange); //读取收件箱中指定号码的短信 cursor = managedQuery(Uri.parse("content://sms/inbox"), new String[]{"_id", "address", "read"}, " address=? and read=?", new String[]{"12345678901", "0"}, "date desc"); if (cursor != null){ ContentValues values = new ContentValues(); values.put("read", "1"); //修改短信为已读模式 cursor.moveToFirst(); while (cursor.isLast()){ //更新当前未读短信状态为已读 getContentResolver().update(Uri.parse("content://sms/inbox"), values, " _id=?", new String[]{""+cursor.getInt(0)}); cursor.moveToNext(); } } } } /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); SmsContent content = new SmsContent(new Handler()); //注册短信变化监听 this.getContentResolver().registerContentObserver(Uri.parse("content://sms/"), true, content); } }