BroadcastReceiver无法正常工作

Question

I have a BroadcastReceiver .

AndroidManifest.xml :

<!-- When starting calculator-->    
<receiver android:name=".APP_CALCULATOR_class" >
    <intent-filter>
        <action android:name="android.intent.category.APP_CALCULATOR" >
        </action>
    </intent-filter>
</receiver>

APP_CALCULATOR_class.class :

    package com.startcalcevent.startcalcevent;
    import android.content.BroadcastReceiver;
    import android.content.Context;
    import android.content.Intent;
    import android.widget.Toast;

    public class APP_CALCULATOR_class  extends BroadcastReceiver {
        public void onReceive(Context context, Intent intent) {
            Toast.makeText(context, "Calculator is on" , Toast.LENGTH_LONG).show();
        }
    }

Why is this code not working when I open the calculator application?

Answer 1

I will only start when you send an Intent that is broadcasted. A App_CALCULATOR category Intent with action (ACTION_MAIN) is not broadcasted (using sendBroadcast(Intent) ) but started as an Activity using startActivity(Intent);