Activity 泄露了 IntentReceiver

Question

我正在尝试一起发送短信和邮件。发送邮件没有问题，但是当我发送短信时，我收到此异常：

 End has leaked IntentReceiver
Are you missing a call to unregisterReceiver()?

这是我的 sms 方法代码，来自 https://mobiforge.com/design-development/sms-messaging-android ：

 public class End extends Activity {

    Button btnSendSMS;
    EditText txtPhoneNo;
    EditText txtMessage;
    public EditText Details;
    public String user;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.end);
        Details = (EditText)findViewById(R.id.details);
        btnSendSMS = (Button) findViewById(R.id.btnSend);
        Bundle b=this.getIntent().getExtras();
        final String email=b.getString("keym");
        final String pno=b.getString("keys");

        btnSendSMS.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                String detail=Details.getText().toString();
                Mail m = new Mail("[e-mail]", "sdfsa");
                String[] toArr = {email};
                m.setTo(toArr);
                m.setFrom("[e-mail]");
                m.setSubject("EMERGENCY");
                m.setBody(detail);

                try {
                    // m.addAttachment("/sdcard/filelocation");
                    if(m.send()) {
                    Toast.makeText(End.this, "Email was sent successfully.", Toast.LENGTH_LONG).show();
                    } else {
                  Toast.makeText(End.this, "Email was not sent.", Toast.LENGTH_LONG).show();
                    }
                } catch(Exception e) {
                //Toast.makeText(MailApp.this, "There was a problem sending the email.", Toast.LENGTH_LONG).show();
                Log.e("MailApp", "Could not send email", e);
                }

                sendSMS(pno, detail);
                finish();
                Intent intent = new Intent(End.this,Service.class);
                startActivity(intent);
               }
            }
        );

    }

    private 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);

         //---when the SMS has been sent---
         registerReceiver(new BroadcastReceiver()
         {
             Context context;
             @Override
             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(){
             Context context;
             @Override

             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);

}

}

原文由 chetan 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

像这样创建一个自定义接收器

class deliverReceiver extends BroadcastReceiver {
@Override
 public void onReceive(Context context, 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;
             }

         }
}

和这样的发送接收者..

 class sentReceiver extends BroadcastReceiver {
@Override
 public void onReceive(Context context, 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;
             }

         }

现在在 sendSMS 方法中

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

放

registerReceiver(sentReceiver,SENT);
registerReceiver(deliverReceiver,DELIVERED);

现在覆盖 onpause 并取消注册这样的接收器..

 unregisterReceiver(sentReceiver);
unregisterReceiver(deliverReceiver);

原文由 5hssba 发布，翻译遵循 CC BY-SA 3.0 许可协议

Answer 2

您应该在 --- 中注销接收器，并在 onResume() onPause() 中注册它们。这样，当 Android 为配置更改销毁并重新创建 Activity 时，或者出于任何原因，您仍将设置接收器。

原文由 5hssba 发布，翻译遵循 CC BY-SA 3.0 许可协议