How to load data to app widget after device boot

Question

I'm trying to read data to my widget after device boot.

My boot receiver is this:

    public class onBootReceiver extends BroadcastReceiver{

public static final String TAG = "BootReceiver";
private Context c;
@Override
public void onReceive(Context c, Intent i) {
    // TODO Auto-generated method stub

    boolean dontStop = true;
    while(dontStop)
    {
        try
        {   
            this.c=c;
            if(isExternalStorageMounted())
            {
                dontStop = false;
            }
            else
                for(int j=0;j<10000;j++)
                    Log.d(TAG, "###################### EXTERNAL STORAGE NOT MOUNTED ##########################");
        }
        catch (Exception e)
        {
            for(int j=0;j<10000;j++)
                Log.d(TAG, "###################### EXTERNAL STORAGE NOT MOUNTED ##########################");
        }
    }
    Intent externalStorageReady = new Intent(c, TheWidget.class);
    externalStorageReady.setAction(GlobalVars.WIDGET_INTENT_ACTION_READ_PREFS_AFTER_BOOT);
    c.sendBroadcast(externalStorageReady);

}
private boolean isExternalStorageMounted()
{
    String state = Environment.getExternalStorageState(); 
    if (Environment.MEDIA_REMOVED.equals(state))
    {
        return false; 
    }
    else if (Environment.MEDIA_SHARED.equals(state))
    {
        return false; 
    }
    else if (Environment.MEDIA_UNMOUNTABLE.equals(state))
    {
        return false; 
    }
    else if (Environment.MEDIA_UNMOUNTED.equals(state))
    {
        return false; 
    }
    return true;
}

}

I know I get the BOOT_COMPLETED intent (after using it in the widget itself), but I just can't read my saved data.

I read that using SharedPreferences is the solution, but what I know is when you boot your device, the SharedPreferences is no longer there.

I save the data internally using built-in SQL in the Android SDK.

Please help... :(

Answer 1

External storage may not be ready by the time of a BOOT_COMPLETED broadcast. And your loops are pointless.

but what i know is when you boot your device, the SharedPreferences is no longer there.

Yes, SharedPreferences are there at boot time.

i save the data internally using built-in SQL in the android sdk.

Then it is unclear why you are waiting on external storage, since your data is not on external storage.

Any form of I/O may take too long, though, right at boot time. Have your BroadcastReceiver call startService() on an IntentService that can read your database or SharedPreferences in onHandleIntent() and update your app widget.