Problem with widget setImageViewUri

I tried to create a widget with configuration that displays an image in the external storage, everything works as it should, but when it reboots the device the widgets do not load, show only the app icon.

Here is the Provider code

package aloogle.pokedex.widget;

import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.widget.RemoteViews;
import aloogle.pokedex.R;

public class WidgetShortcut extends AppWidgetProvider {
    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[]appWidgetIds) {
        super.onUpdate(context, appWidgetManager, appWidgetIds);
        for (int i = 0; i < appWidgetIds.length; i++) {
            int appWidgetId = appWidgetIds[i];

            final Intent intent = new Intent(Intent.ACTION_MAIN, null);
            intent.addCategory(Intent.CATEGORY_LAUNCHER);
            final ComponentName cn = new ComponentName("aloogle.pokedex", "aloogle.pokedex.activity.ActivitySplashScreen");
            intent.setComponent(cn);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_shortcut);

            PendingIntent pending = PendingIntent.getActivity(context, 0, intent, 0);
            views.setOnClickPendingIntent(R.id.imageView1, pending);

            appWidgetManager.updateAppWidget(appWidgetId, views);
        }
    }
}

And Config

package aloogle.pokedex.widget;

import android.app.Activity;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RemoteViews;
import android.widget.Toast;
import java.io.File;
import aloogle.pokedex.R;

public class WidgetShortcutConfigure extends Activity {

    private WidgetShortcutConfigure context;
    private int widgetID;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.widget_shortcut_configure);
        setResult(RESULT_CANCELED);
        context = this;

        Bundle extras = getIntent().getExtras();
        if (extras != null) {
            widgetID = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID,
                    AppWidgetManager.INVALID_APPWIDGET_ID);
        }

        final AppWidgetManager widgetManager = AppWidgetManager.getInstance(context);
        final RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_shortcut);

        final EditText et = (EditText)findViewById(R.id.editText1);
        Button b = (Button)findViewById(R.id.button1);
        b.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                String idpk = et.getText().toString();
                File art = new File(Environment.getExternalStorageDirectory() + "/DroiDex/art/sa_" + idpk + ".png");
                String files = art.toString();
                if (art.exists()) {
                    Uri imgUri = Uri.parse(files);
                    views.setImageViewUri(R.id.imageView1, imgUri);
                    Intent intent = new Intent(WidgetShortcutConfigure.this, aloogle.pokedex.activity.ActivitySplashScreen.class);
                    PendingIntent pending = PendingIntent.getActivity(context, 0, intent, 0);

                    views.setOnClickPendingIntent(R.id.imageView1, pending);
                    widgetManager.updateAppWidget(widgetID, views);

                    Intent resultValue = new Intent();
                    resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, widgetID);
                    setResult(RESULT_OK, resultValue);
                    finish();
                } else {
                    Toast toast = Toast.makeText(getApplicationContext(), getString(R.string.widgetshortcuttoastwarning), Toast.LENGTH_LONG);
                    toast.show();
                }
            }
        });
        setTitle(getString(R.string.addpokemon));
    }
}

So you have before rebooting and after that .

Does anyone know how to solve this? I know the problem is in onUpdate, but I do not know the code