Problem with back button in my app

Question

I want to clear shared preference values when my mobile is switched off?

Please improve your question, put some efforts else its going to be closed. — Mudassir, Sep 21 '11 at 10:52
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score 2 · Answer 1 · answered Sep 21 '11 at 10:47

How can you clear SharedPreference when the device is switched off.

You can clear it when the device starts thru BraodcastReceiver.

public class PhoneStateReceiver extends BroadcastReceiver{

    @Override
    public void onReceive(final Context context, Intent intent) {

        if(intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)){
            //Clear your `SharedPreference` here.
        }
    }
}

In your manifest add this:

<receiver android:name=".receiver.PhoneStateReceiver">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
    </intent-filter>
</receiver>

Add permission:

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

score 0 · Answer 2 · answered Sep 21 '11 at 11:42

0

Asfar as i know the only possibility is to use OnDestroy() but your program should be running when the device is shutdown.

answered Sep 21 '11 at 11:42

Roel Veldhuizen

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score 0 · Answer 3 · edited May 23 '17 at 10:34

Same question as: Android: Android: How to make a specific SharedPreference reset itself after the system reboots?

I don't know of a different way. This implementation is quite simple. Just handle the BOOT_COMPLETED broadcast action and clear preferences by calling .clear() on the SharedPreference.Editor (answer is here).

A simple Boot receiver might look like this:

public class OnBootReceiver extends BroadcastReceiver{

                @Override
                public void onReceive(Context context, Intent intent) {
                      //clear preferences here         
                }

}

Declare it also in your AndroidManifest.xml as:

           <receiver android:name=".OnBootReceiver">
                    <intent-filter>
                            <action android:name="android.intent.action.BOOT_COMPLETED" />
                    </intent-filter>
            </receiver>

You will also need a permission for this:

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

Problem with back button in my app

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