Android 活动中的广播接收器

嗨，我正在开发一个安卓手机短信应用程序，我在活动中使用广播接收器，参考下面的链接

我试过这个密码

public class Myapp extends Activity 
{
  BroadcastReceiver sendBroadcastReceiver= new sentReceiver();

    protected void onCreate(Bundle savedInstanceState) 
    {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activtiy_main);


    }

   public void onClick(View v)
  {
    if(v.getId()==sendmsg.getId())
    {

        sendSMS(phoneNumber,message);

    }

 @Override
  protected void onDestroy() 
  {
    super.onDestroy();
    try
    {
        unregisterReceiver(sendBroadcastReceiver);
    }
    catch (Exception e)
    {
         e.printStackTrace();
    }
  }
     //unregistering Receiver even in onPause()

  private void sendSMS(String phoneNumber, String message)
  {
    String SENT = "SMS_SENT";
    PendingIntent sentPI = PendingIntent.getBroadcast(this, 0, new Intent(SENT), 0);
    registerReceiver(sendBroadcastReceiver, new IntentFilter(SENT));

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

  }
  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();
             startActivity(new Intent(Myapp.this, Sm.class));
             break;
        case SmsManager.RESULT_ERROR_NO_SERVICE:
            Toast.makeText(getBaseContext(), "No service",Toast.LENGTH_SHORT).show();
            Log.e("No service","");
            break;
        }
     }                  

   }

}

但我也收到了警告

java.lang.IllegalArgumentException: Receiver not registered: com.example.Myapp$Receiver@40593ab8

不确定我需要如何在舱单中注册收件人。请建议。谢谢

1。您正在以编程方式向注册接收器

registerReceiver(sendBroadcastReceiver, new IntentFilter(SENT));

因此，也没有必要将其添加到清单中

二,。您有一个名为sentReceiver的自定义BroadcastReceiver类，因此在实例化它时应该使用此objecttype

所以你需要改变

BroadcastReceiver sendBroadcastReceiver= new sentReceiver();

到

---

三,。我想你把你的东西打错了顺序。因此，接收器没有准备好在应该的时候进行监听。

您需要在活动的oncreate方法中实例化sendBroadcastReceiver。这将允许在调用ondestroy方法并且您的代码注销接收方后重新注册。正如Bofredo所指出的，使用您的自定义CALS进行实例化。

尝试为Receiver使用匿名类。是一个很好的例子。不要全局初始化广播接收器。BroadcastReceiver sendBroadcastReceiver=新的sentReceiver；在send message方法中初始化此项，并在destroy上签入。如果sendBroadcastReceiver为null，则不执行注销代码。

SentReceiver sendBroadcastReceiver = new sentReceiver();