android - IntentRecieverLeakedException，您是否错过了对 unregisterReceiver() 的调用？在安卓中

Question

我正在尝试以下短信示例: http://mobiforge.com/developing/story/sms-messaging-android但如果我尝试发送消息，我会收到以下异常。

Exception:
    02-07 12:38:15.447: ERROR/ActivityThread(839): Activity com.micro.MyTest has leaked IntentReceiver com.micro.MyTest$1@435a0c70
that was originally registered here. Are you missing a call to
unregisterReceiver()?
    02-07 12:38:15.447: ERROR/ActivityThread(839): android.app.IntentReceiverLeaked: Activity com.test.SendSMS has leaked
IntentReceiver com.test.SendSMS $1@435a0c70 that was originally
registered here. Are you missing a call to unregisterReceiver()?
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.ActivityThread$PackageInfo$ReceiverDispatcher.<init>(ActivityThread.java:707)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.ActivityThread$PackageInfo.getReceiverDispatcher(ActivityThread.java:535)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.ApplicationContext.registerReceiverInternal(ApplicationContext.java:748)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.ApplicationContext.registerReceiver(ApplicationContext.java:735)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.ApplicationContext.registerReceiver(ApplicationContext.java:729)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:278)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at com.micro.MyTest.sendSMS(SendSMS .java:98)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at com.micro.MyTest.onCreate(SendSMS .java:42)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2231)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.ActivityThread.access$1800(ActivityThread.java:112)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1692)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.os.Handler.dispatchMessage(Handler.java:99)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.os.Looper.loop(Looper.java:123)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at android.app.ActivityThread.main(ActivityThread.java:3948)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at java.lang.reflect.Method.invokeNative(Native Method)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at java.lang.reflect.Method.invoke(Method.java:521)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
    02-07 12:38:15.447: ERROR/ActivityThread(839):     at dalvik.system.NativeStart.main(Native Method)
    02-07 12:38:15.496: ERROR/ActivityThread(839): Activity com.micro.MyTest has leaked IntentReceiver com.test.MyTest$2@435a13b8
that was originally registered here. Are you missing a call to
unregisterReceiver()?
    02-07 12:38:15.496: ERROR/ActivityThread(839): android.app.IntentReceiverLeaked: Activity com.test.SendSMS has leaked
IntentReceiver com.test.SendSMS $2@435a13b8 that was originally
registered here. Are you missing a call to unregisterReceiver()?
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.ActivityThread$PackageInfo$ReceiverDispatcher.<init>(ActivityThread.java:707)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.ActivityThread$PackageInfo.getReceiverDispatcher(ActivityThread.java:535)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.ApplicationContext.registerReceiverInternal(ApplicationContext.java:748)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.ApplicationContext.registerReceiver(ApplicationContext.java:735)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.ApplicationContext.registerReceiver(ApplicationContext.java:729)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:278)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at com.micro.MyTest.sendSMS(SendSMS .java:129)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at com.micro.MyTest.onCreate(SendSMS .java:42)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2231)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.ActivityThread.access$1800(ActivityThread.java:112)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1692)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.os.Handler.dispatchMessage(Handler.java:99)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.os.Looper.loop(Looper.java:123)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at android.app.ActivityThread.main(ActivityThread.java:3948)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at java.lang.reflect.Method.invokeNative(Native Method)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at java.lang.reflect.Method.invoke(Method.java:521)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
    02-07 12:38:15.496: ERROR/ActivityThread(839):     at dalvik.system.NativeStart.main(Native Method)

发送sms的方法:

publicvoid sendSMS(String phoneNumber, String message) {
  String SENT = "SMS_SENT";
  String DELIVERED = "SMS_DELIVERED";

  PendingIntent sentPI = PendingIntent.getBroadcast(this, 0, new Intent(SENT), 0);
  PendingIntent deliveredPI = PendingIntent.getBroadcast(this, 0, new Intent(DELIVERED), 0);

  // When the SMS has been sent, the following line (line 98) throws Exception

  registerReceiver(
    new BroadcastReceiver(){

      public void onReceive(Context arg0, Intent arg1) {
        switch (getResultCode()) {
          case Activity.RESULT_OK:
            Toast.makeText(getBaseContext(), "SMS Sent", Toast.LENGTH_SHORT).show();
            break;
          case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
            Toast.makeText(getBaseContext(), "Generic failure", Toast.LENGTH_SHORT).show();
            break;
          case SmsManager.RESULT_ERROR_NO_SERVICE:
            Toast.makeText(getBaseContext(), "No service", Toast.LENGTH_SHORT).show();
            break;
          case SmsManager.RESULT_ERROR_NULL_PDU:
            Toast.makeText(getBaseContext(), "Null PDU", Toast.LENGTH_SHORT).show();
            break;
          case SmsManager.RESULT_ERROR_RADIO_OFF:
            Toast.makeText(getBaseContext(), "Radio off", Toast.LENGTH_SHORT).show();
            break;
          }
        }

      }, new IntentFilter(SENT)); 

  // when the SMS has been delivered

  registerReceiver(
    new BroadcastReceiver() {

      public void onReceive(Context arg0, Intent arg1) {
        switch (getResultCode()) {
          case Activity.RESULT_OK:
            Toast.makeText(getBaseContext(), "SMS Delivered",Toast.LENGTH_SHORT).show();
            break;
        case Activity.RESULT_CANCELED:
          Toast.makeText(getBaseContext(), "SMS not delivered", Toast.LENGTH_SHORT).show();
          break; 
        }
      }
    },new IntentFilter(DELIVERED)); 

  SmsManager sms = SmsManager.getDefault();
  sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI); 

}

Answer 1

在您的 Activity 类中，声明这些全局变量:

private BroadcastReceiver sendBroadcastReceiver;
private BroadcastReceiver deliveryBroadcastReceiver;
String SENT = "SMS_SENT";
String DELIVERED = "SMS_DELIVERED";

覆盖您的 Activity 的 onCreate 并注册您的接收器:

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    sendBroadcastReceiver = new BroadcastReceiver()
    {

        public void onReceive(Context arg0, Intent arg1)
        {
            switch (getResultCode())
            {
            case Activity.RESULT_OK:
                Toast.makeText(getBaseContext(), "SMS Sent", Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                Toast.makeText(getBaseContext(), "Generic failure", Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_NO_SERVICE:
                Toast.makeText(getBaseContext(), "No service", Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_NULL_PDU:
                Toast.makeText(getBaseContext(), "Null PDU", Toast.LENGTH_SHORT).show();
                break;
            case SmsManager.RESULT_ERROR_RADIO_OFF:
                Toast.makeText(getBaseContext(), "Radio off", Toast.LENGTH_SHORT).show();
                break;
            }
        }
    };

    deliveryBroadcastReceiver = new BroadcastReceiver()
    {
        public void onReceive(Context arg0, Intent arg1)
        {
            switch (getResultCode())
            {
            case Activity.RESULT_OK:
                Toast.makeText(getBaseContext(), "SMS Delivered", Toast.LENGTH_SHORT).show();
                break;
            case Activity.RESULT_CANCELED:
                Toast.makeText(getBaseContext(), "SMS not delivered", Toast.LENGTH_SHORT).show();
                break;
            }
        }
    };
registerReceiver(deliveryBroadcastReceiver, new IntentFilter(DELIVERED));
registerReceiver(sendBroadcastReceiver , new IntentFilter(SENT));
}

接下来，你的发送短信方法只剩下 6 行代码了:

public void sendSMS(String phoneNumber, String message)
{
    String SENT = "SMS_SENT";
    String DELIVERED = "SMS_DELIVERED";
    PendingIntent sentPI = PendingIntent.getBroadcast(this, 0, new Intent(SENT), 0);
    PendingIntent deliveredPI = PendingIntent.getBroadcast(this, 0, new Intent(DELIVERED), 0);
    SmsManager sms = SmsManager.getDefault();
    sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI);
}

最后，在您的 Activity 停止时取消注册您的接收器:

@Override
protected void onStop()
{
    unregisterReceiver(sendBroadcastReceiver);
    unregisterReceiver(deliveryBroadcastReceiver);
    super.onStop();
}