CODEWITHSUNDEEP
androidandroid-intentbroadcastpreferencescreen
Jon
Jon

Reputation: 21

Send broadcast intent from PreferenceScreen?

Is it possible to directly send a broadcast intent from a PreferenceScreen?

For example, I would like to do something like the following:

<PreferenceScreen android:title="Enable">
<intent android:action="com.otherapp.ENABLE" />
</PreferenceScreen>

But when I try this, the app FC's w/ ActivityNotFoundException.

BTW, the receiver is simply defined as:

<receiver android:name=".Receiver">
<intent-filter>
<action android:name="com.otherapp.ENABLE" />
</intent-filter>
</receiver>

This broadcast receiver has been tested to work ok, but just not from the PreferenceScreen.

TIA!

Upvotes: 2

Views: 1323

Answers (3)

Rob Warden-Rothman
Rob Warden-Rothman

Reputation: 61

You can extend Preference to make it send a broadcast when clicked:

public class BroadcastPreference extends Preference implements Preference.OnPreferenceClickListener {
    public BroadcastPreference(Context context, AttributeSet attrs) {
        super(context, attrs);

        this.setOnPreferenceClickListener(this);
    }

    @Override
    public boolean onPreferenceClick(Preference preference) {
        getContext().sendBroadcast(getIntent());
        return true;
    }
}

Then use your custom preference in the xml file

<com.app.example.BroadcastPreference android:title="Enable">
    <intent android:action="com.otherapp.ENABLE" />
</com.app.example.BroadcastPreference>

Upvotes: 6

anvish
anvish

Reputation: 515

Preferences send intents to activities, not to broadcast receivers. If you want to send intents to broadcast receivers, create activity that forwards intents to broadcast receivers

public class ForwardingActivity extends Activity {
    @Override
    protected void onStart() {
        super.onStart();
        Intent incomingIntent = getIntent();
        Intent outgoingIntent = new Intent(incomingIntent);
        outgoingIntent.setComponent(null); // unblock recipients
        sendBroadcast(outgoingIntent);
    }
}

with no UI

    <activity
        android:name=".ForwardingActivity "
        android:theme="@android:style/Theme.NoDisplay" >
        <intent-filter>
            <action android:name="com.otherapp.ENABLE" />
            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>

Upvotes: 0

Paul Tsupikoff
Paul Tsupikoff

Reputation: 1650

I think, you should add category android.intent.category.DEFAULT to intent-filter in your manifest. It should look like this:

<receiver android:name=".Receiver">
    <intent-filter>
        <action android:name="com.otherapp.ENABLE" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</receiver>

Upvotes: -2

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