Question

当我的应用程序正在运行或被最小化时，它运行正常。但是，当应用关闭时，它无法正常工作。

我希望它即使在关闭时也可以工作.....请为此提出建议。

SmsReceiver.java

public class SmsReceiver extends BroadcastReceiver{

    String str = "hello";
    MainActivity main = new MainActivity();

    @Override
    public void onReceive(Context context, Intent intent) {
            sendToMain(context,intent);
    }

    public void sendToMain(Context context,Intent intent){

        Toast.makeText(context,"from receiver : "+str, Toast.LENGTH_SHORT).show();            

        Intent i = new Intent(context,MainActivity.class);
        i.putExtra("msg",str);
        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK| Intent.FLAG_ACTIVITY_CLEAR_TOP|intent.FLAG_ACTIVITY_NO_HISTORY| Intent.FLAG_ACTIVITY_SINGLE_TOP|intent.FLAG_INCLUDE_STOPPED_PACKAGES);
        context.startActivity(i);
    }
}

MainActivity.java

 public class MainActivity extends AppCompatActivity{

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
     }

     @Override
     protected void onNewIntent(Intent intent) {
         Bundle extras = intent.getExtras();
         sms = extras.getString("msg");

         Toast.makeText(MainActivity.this, "from main activity :"+sms, Toast.LENGTH_SHORT).show();
     }
 }

权限 - ＆gt;

<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-permission android:name="android.permission.READ_SMS"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

接收者 - ＆gt;

    <receiver android:name=".SmsReceiver"
        android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="android.provider.Telephony.SMS_RECEIVED"/>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>

如果应用程序关闭或未运行，如何使BroadcastReceiver工作......？

0 个答案: