Example usage for android.appwidget AppWidgetProviderInfo loadPreviewImage

Introduction

In this page you can find the example usage for android.appwidget AppWidgetProviderInfo loadPreviewImage.

Prototype

public final Drawable loadPreviewImage(@NonNull Context context, int density) 

Source Link

Document

Loads a preview of what the AppWidget will look like after it's configured.

Usage

From source file:com.farmerbb.taskbar.service.DashboardService.java

private void addPlaceholder(int cellId) {
    FrameLayout placeholder = (FrameLayout) cells.get(cellId).findViewById(R.id.placeholder);
    SharedPreferences pref = U.getSharedPreferences(this);
    String providerName = pref.getString("dashboard_widget_" + Integer.toString(cellId) + "_provider", "null");

    if (!providerName.equals("null")) {
        ImageView imageView = (ImageView) placeholder.findViewById(R.id.placeholder_image);
        ComponentName componentName = ComponentName.unflattenFromString(providerName);

        List<AppWidgetProviderInfo> providerInfoList = mAppWidgetManager
                .getInstalledProvidersForProfile(Process.myUserHandle());
        for (AppWidgetProviderInfo info : providerInfoList) {
            if (info.provider.equals(componentName)) {
                Drawable drawable = info.loadPreviewImage(this, -1);
                if (drawable == null)
                    drawable = info.loadIcon(this, -1);

                ColorMatrix matrix = new ColorMatrix();
                matrix.setSaturation(0);

                imageView.setImageDrawable(drawable);
                imageView.setColorFilter(new ColorMatrixColorFilter(matrix));
                break;
            }/*from  www.  j  a  v a 2  s.  c o m*/
        }
    }

    placeholder.setVisibility(View.VISIBLE);
}

---