观察者短信案例

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Uri uri=Uri.parse("content://sms/");//观察地址
getContentResolver().registerContentObserver(uri, true, new SmsObserver(new Handler()));
}


public class SmsObserver extends ContentObserver {
public SmsObserver(Handler handler) {
super(handler);
}


@Override
public void onChange(boolean selfChange) {
System.out.println("有新的短信");
//获取发出去的短信内容
Cursor cursor = getContentResolver().query(Uri.parse("content://sms/outbox"),null, null, null, null); 
while(cursor.moveToNext()){
StringBuilder sb = new StringBuilder();
sb.append("_id=").append(cursor.getInt(cursor.getColumnIndex("_id")));
sb.append(",address=").append(cursor.getString(cursor.getColumnIndex("address")));
sb.append(";body=").append(cursor.getString(cursor.getColumnIndex("body")));
sb.append(";time=").append(cursor.getLong(cursor.getColumnIndex("date")));
System.out.println(sb.toString());
   super.onChange(selfChange);
}
}

}

2.添加权限

<uses-permission android:name="android.permission.READ_SMS"/>