Android 如何在主活动中注册接收者？

我有一个

SmsReceiver

类，我想在主活动中注册它，我应该怎么做

---

我是Android新手。

要让服务接收短信，请执行以下步骤：

更新清单以授予应用程序接收SMS的权限 （写短信、读短信、接收短信）

不要使用receiver intent筛选器更新清单！（哪个 每个在线示例代码似乎都可以）

在服务中，在服务类中创建嵌套的BroadcastReceiver类

private class SMSreceiver extends BroadcastReceiver
{
    private final String TAG = this.getClass().getSimpleName();

    @Override
    public void onReceive(Context context, Intent intent)
    {
        Bundle extras = intent.getExtras();

        String strMessage = "";

        if ( extras != null )
        {
            Object[] smsextras = (Object[]) extras.get( "pdus" );

            for ( int i = 0; i < smsextras.length; i++ )
            {
                SmsMessage smsmsg = SmsMessage.createFromPdu((byte[])smsextras[i]);

                String strMsgBody = smsmsg.getMessageBody().toString();
                String strMsgSrc = smsmsg.getOriginatingAddress();

                strMessage += "SMS from " + strMsgSrc + " : " + strMsgBody;                    

                Log.i(TAG, strMessage);
            }

        }

    }

}

就这样

注意：

---

encase您想知道为什么我没有从一个单独的BroadcastReceiver类中绑定到我的服务-它不起作用，因为

bindService（）

不可用。

您可以做两件事：

在

清单中创建并定义
BroadcastReceiver

在代码中创建并注册

广播接收器

对于选项2（您正在询问）：

在代码（MyBroadcastReceiver）中创建一个

BroadcastReceiver

。 在您的

活动范围内声明MyBroadcastReceiver

：

MyBroadcastReceiver mMyBroadcastReceiver;

通过以下方式在

活动中注册
广播接收器
：

IntentFilter filter = new IntentFilter(android.provider.Telephony.SMS_RECEIVED);
this.registerReceiver(mMyBroadcastReceiver, filter);

当您要求在您的
main活动中注册
BroadcastReceiver
时，它适用于
registerReceiver codewise-in main活动

下面是代码的样子==>

public class MainActivity extends Activity 
{
BroadcastReceiver smsReceiver;
private IntentFilter myFilter = new IntentFilter(android.provider.Telephony.SMS_RECEIVED);

   protected void onCreate(Bundle savedInstanceState) 
   {
    super.onCreate(savedInstanceState);
    registerReceiver(smsReceiver, myFilter); // register BroadCastReceiver at time of initialization of Activity with proper Intent-Filter
   }

@Override
  protected void onPause() 
   {
    unregisterReceiver(smsReceiver); // UnRegister BroadCastReceiver as you no longer have your activity at Foreground -- Saving CPU & Battery Drainage
    super.onPause();
   }

 @Override
   protected void onResume() 
   {
    registerReceiver(smsReceiver, myFilter); // Register BroadCastReceiver Once again as your activity comes from pause to forground state again.
    super.onResume();
   }

  smsReceiver = new BroadcastReceiver() //Implementation of your BroadCastReceiver
  {

    @Override
    public void onReceive(Context context, Intent intent)
    {
       // Do whatever you like as sms is received and caught by these BroadCastReceiver
        Toast.makeText(context, "SMS Received", Toast.LENGTH_LONG).show();          
    }
  };
 }

希望这对API级别19及以上的用户有所帮助

 IntentFilter smsFilter = new IntentFilter();
 smsFilter.addAction(Telephony.Sms.Intents.SMS_RECEIVED_ACTION);
registerReceiver(this.receiver, filter);

你可以看看这篇文章，关于这个话题有很多答案。检查，和。可能的副本
private BroadcastReceiver receiver = new BroadcastReceiver() {

   @Override
   public void onReceive(Context context, Intent intent) {
       //some action
   }
};

IntentFilter filter = new IntentFilter("YOUR_ACTION");
registerReceiver(receiver, filter);

 IntentFilter smsFilter = new IntentFilter();
 smsFilter.addAction(Telephony.Sms.Intents.SMS_RECEIVED_ACTION);
registerReceiver(this.receiver, filter);