广播接收器在4.1.1中不起作用

Question

I have a broadcast receiver for incoming call.I want to launch a new activity when an incoming call comes.I am aware of the changes that are made from android 3.0,that the broadcast receiver will not work unless user manually starts an application For that purpose I launch a dummy activity with just a toast message in it.Still the broadcast receiver is not working. Here is my code

My broadcastreceiver

public class IncomingCallResult extends BroadcastReceiver 
{
String TAG="IncomingCallResult";    
@Override
public void onReceive(Context arg0, Intent I1) 
{
    Log.i(TAG,"inside on receive........");
    Bundle bundle=I1.getExtras();
    String state=bundle.getString(TelephonyManager.EXTRA_STATE);

    if(state.equals(TelephonyManager.EXTRA_STATE_RINGING))
    {
        Intent flash_intent=new Intent(arg0,LedFlasher.class);
        flash_intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        arg0.startActivity(flash_intent);

    } 


}    

}

manifest file

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.blinker"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.FLASHLIGHT"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <receiver 
        android:name=".IncomingCallResult"
        android:enabled="true">
        <intent-filter
            android:priority="214783648" 
            android:name="android.intent.action.PHONE_STATE">
        </intent-filter>
    </receiver>

    <activity
        android:name=".LedFlasher"
        android:label="@string/title_activity_incoming_call_result" >     
     </activity>

    <activity
        android:name=".Dummy">
         <intent-filter >
             <action android:name="android.intent.action.MAIN"/>
             <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>     
     </activity>



</application>

What is wrong with the code? Please help

Answer 1

As you have already known that the broadcast receiver will not work unless user manually starts an application For that purpose , you should not be surprised that your broadcast receiver will not work until user Manually open your application once . That is to say, you have to make a launcher activity which user is able to click and open it manually .

And what's more, it is better to Open and stay in your application for like 20s since I remember that the change of application configuration will take 10 or 20s to be saved.