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我是android.I的新手,我嘗試在主類中註冊Broadcastreceiver來接收sms.But當我運行logcat時顯示「接收廣播意圖時出錯」,並且應用程序變得強制關閉。對此的解決方案? 這裏是我的代碼:如何註冊BroadcastReceiver
public class Yes extends Activity {
/** Called when the activity is first created. */
private Retrieve receiver = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button start=(Button)findViewById(R.id.bt1);
start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
receiver = new Retrieve();
registerReceiver(receiver,new
IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
}
});
}
private class Retrieve extends BroadcastReceiver
{
public void onReceive(Context context, Intent intent) {
Bundle bundle = intent.getExtras();
Object messages[] = (Object[]) bundle.get("pdus");
SmsMessage smsMessage[] = new SmsMessage[messages.length];
for (int n = 0; n<messages.length; n++) {
smsMessage[n] = SmsMessage.createFromPdu((byte[]) messages[n]);
smsMessage[0].getMessageBody();
}
// show first message
Toast toast = Toast.makeText(context,
"Received SMS: " + smsMessage[0].getMessageBody(), Toast.LENGTH_LONG);
toast.show();
}}
我把一個啓動按鈕,我試圖內rgister接收器button.I清單文件接收sms.i提供許可,不得以manifest.I覺得沒寫意圖過濾器我註冊接收器的方式是什麼,我想我do.help完全錯誤的......
感謝約翰,是semicollan是你的代碼後,需要?現在我的錯誤說你是否錯過了一個調用來取消註冊接收器?我如何取消註冊,如果我註冊按鈕內。吐司消息也不會出現。只有通知欄被看到,該怎麼辦?之後我登記清單文件接收 – divya 2012-01-12 10:09:18
問題解決,在一個單獨的類編寫代碼的廣播接收器。 – divya 2012-01-12 12:30:15
調用unRegisterReceiver(smsReceiver);當你不再需要它時...例如,在Activity的onStop()方法中。如果在清單中註冊,我認爲Android會自動管理它 – JohnCookie 2012-01-13 01:12:55