android – How to pass data to BroadcastReceiver?-ThrowExceptions

Exception or error:

What I am trying to do is that the numbers to which my application sends messages to, are passed to the BraodcastReceiver…but so far either I am getting null or BroadcastReceiver just simply crashes..

here is my intent for BroadcastReceiver from CreateMessage class…

        Intent intent = new Intent();
        Bundle bundle = new Bundle();
        bundle.putString("phN", phoneNo);
        intent.putExtras(bundle);
        startActivity(intent);

And in BroadcastReceiver (SmsReceiver class) I am trying to catch intent like this..

public void onReceive(Context context, Intent intent) {
    //---get the SMS message passed in---
    Bundle bundle = intent.getExtras();
    try{
    //receiveNumbers = intent.getExtras().get("phN").toString();
        String  receiveNumbers = intent.getStringExtra("phN");
        Toast.makeText(context, receiveNumbers, Toast.LENGTH_LONG).show();
    }catch(Exception e){
        e.printStackTrace();
    }

My Manifest File:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.AEM_n"
      android:versionCode="2" android:versionName="2.0">
    <uses-sdk android:minSdkVersion="8" />
    <uses-permission android:name="android.permission.READ_CONTACTS"/>
    <uses-permission android:name="android.permission.READ_SMS"/>    
    <uses-permission  android:name="android.permission.SEND_SMS"/>
    <uses-permission  android:name="android.permission.RECEIVE_SMS"/>

    <application android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="true">
        <activity android:name=".new_menu"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:label="@string/app_name"
            android:name=".SetEvent" >
            <intent-filter>
                <action android:name="com.AEM_n.SETEVENT" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            </activity>
            <activity
            android:label="@string/app_name"
            android:name=".AddParticipants" />
            <activity
            android:label="@string/app_name"
            android:name=".CreateMessage" />
            <activity
            android:label="@string/app_name"
            android:name=".DataBaseClass" />
            <activity 
            android:label="@string/app_name"
            android:name=".IntentReceiver"/>
            <activity 
            android:label="@string/app_name"
            android:name=".SmsReceiver"
            />
            <receiver android:name=".SmsReceiver" android:exported="true">
            <intent-filter android:priority="999">
            <action android:name="android.provider.Telephony.SMS_RECEIVED"/>
            </intent-filter>
            </receiver>
    </application>

</manifest>

I have already tried all the answers given Stackoverflow…But no use…

Please guys tell me where I am going wrong…Thanks!

Error Log:

04-07 02:34:02.770: ERROR/AndroidRuntime(25593): FATAL EXCEPTION: main
04-07 02:34:02.770: ERROR/AndroidRuntime(25593): java.lang.RuntimeException: Error receiving broadcast Intent { act=com.myapp.myaction (has extras) } in com.AEM_n.SmsReceiver@405a07c8
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:722)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at android.os.Handler.handleCallback(Handler.java:587)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at android.os.Handler.dispatchMessage(Handler.java:92)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at android.os.Looper.loop(Looper.java:123)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at android.app.ActivityThread.main(ActivityThread.java:3701)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at java.lang.reflect.Method.invokeNative(Native Method)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at java.lang.reflect.Method.invoke(Method.java:507)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:862)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at dalvik.system.NativeStart.main(Native Method)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593): Caused by: java.lang.NullPointerException
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at com.AEM_n.SmsReceiver.onReceive(SmsReceiver.java:37)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:709)
04-07 02:34:02.770: ERROR/AndroidRuntime(25593):     ... 9 more
How to solve:

Following @Jason ‘s example…I did this…

In MainActivity or any activity from where you want to send intent from

Intent intent = new Intent("my.action.string");
intent.putExtra("extra", phoneNo); \\ phoneNo is the sent Number
sendBroadcast(intent);

and then in my SmsReceiver Class I did this

public void onReceive(Context context, Intent intent) {
  String action = intent.getAction();

  Log.i("Receiver", "Broadcast received: " + action);

  if(action.equals("my.action.string")){
     String state = intent.getExtras().getString("extra");

  }
}

And in manifest.xml I added "my.action.string" though it was an option..

<receiver android:name=".SmsReceiver" android:enabled="true">
    <intent-filter>
        <action android:name="android.provider.Telephony.SMS_RECEIVED" />
        <action android:name="my.action.string" />
        <!-- and some more actions if you want -->
    </intent-filter>
</receiver>

worked like charm!!

###

You starting an Activity instead of broadcasting Intent.
Try to change

startActivity(intent);

to

sendBroadcast(intent);

UPDATE:

You set no action and no component name to the Intent.
Try create intent as following:

Intent intent = new Intent(context, YourReceiver.class);
intent.putExtra("phN", phoneNo);
sendBroadcast(intent);

###

You would send a broadcast like so:

Intent intent = new Intent(action);
intent.putExtra("phN", phoneNo);
sendBroadcast(intent);

The action parameter is a String that correlates to the action you registered the BroadcastReceiver with. So if you registered your receiver like so:

MyBroadcastReceiver receiver = new MyBroadcastReceiver();
registerReceiver( receiver, new IntentFilter( "com.myapp.myaction" ) );

then action would be "com.myapp.myaction"

###

Your problem is actually very simple. It’s enough that change onReceive() code just like it :

public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();

    Log.i("Receiver", "Broadcast received: " + action);

   if(action.equals("my.action.string")){
       String state = bundle.getString("phN");

   }
}

###

use sendbroadcast instead of startactivity.it will work..!!

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