I am currently writing a simple recipe app for a project and I have come across an issue for which I need help. Thanks in Advance.
Issue:
The Android widget will load perfectly without the list view being activated, but if it is activated it fails to load the whole widget.
The following is the code:
Remote Factory View
public class Widget_Service extends RemoteViewsService {
@Override
public RemoteViewsFactory onGetViewFactory(Intent intent) {
return new Remote_Ingredients_Adapter(this.getApplicationContext(), intent);
}
public class Remote_Ingredients_Adapter implements RemoteViewsService.RemoteViewsFactory {
private Context context;
private ArrayList<Ingredients> ingredients_list;
public Remote_Ingredients_Adapter(Context context, Intent intent) {
this.context = context;
this.ingredients_list = intent.getParcelableArrayListExtra(EasyBakeWidget.Intent_Ingredients);
}
@Override
public void onCreate() { }
@Override
public void onDataSetChanged() { }
@Override
public void onDestroy() { }
@Override
public int getCount() {return ingredients_list.size();}
@Override
public RemoteViews getViewAt(int i) {
RemoteViews row = new RemoteViews(context.getPackageName(), R.layout.ingredients_adapter_layout);
Ingredients ingredient = ingredients_list.get(i);
row.setTextViewText(R.id.tv_ingredient_name,ingredient.getIngredient());
row.setTextViewText(R.id.tv_ingredient_quantity,ingredient.getQuantityWithMeasure());
return row;
}
@Override
public RemoteViews getLoadingView() {return null;}
@Override
public int getViewTypeCount() {return 1;}
@Override
public long getItemId(int i) {return i;}
@Override
public boolean hasStableIds() {return true;}
}
}
Widget Provider Code
Intent rlv_intent = new Intent(context,Widget_Service.class);
rlv_intent.putParcelableArrayListExtra(Intent_Ingredients, recipe.getIngredients());
widget.setRemoteAdapter(R.id.lv_widget_ingredients,rlv_intent);
Full Widget Layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/curved_border_with_fill"
android:orientation="vertical"
android:padding="@dimen/widget_margin">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="@dimen/Padding_Large"
android:layout_marginTop="@dimen/Padding_Medium">
<ImageButton
android:layout_width="24dp"
android:layout_height="24dp"
android:id="@+id/widget_back_button"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:src="@drawable/ic_keyboard_arrow_left"
android:layout_alignBaseline="@id/widget_forward_button"
android:background="@android:color/transparent"/>
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="@+id/widget_recipe_name"
android:textSize="25sp"
tools:text="recipe_name"
android:layout_alignParentTop="true"
android:layout_toEndOf="@id/widget_back_button"
android:layout_toStartOf="@id/widget_forward_button"
android:layout_alignBaseline="@id/widget_back_button"
android:gravity="center"/>
<ImageButton
android:layout_width="20dp"
android:layout_height="24dp"
android:id="@+id/widget_forward_button"
android:layout_alignParentEnd="true"
android:layout_alignParentTop="true"
android:src="@drawable/ic_keyboard_arrow_right"
android:background="@android:color/transparent"/>
</RelativeLayout>
<include layout="@layout/divider_line_solid"/>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="@dimen/Padding_Large"
android:id="@+id/lv_widget_ingredients"
android:layout_gravity="center"/>
</LinearLayout>
List view layout (R.id.lv_widget_ingredients) NOTE this layout file is used in 2 places. The widget list view and a recycler view in one of the activities,
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/tv_ingredient_name"
style="@style/Body_Custom"
android:layout_weight="0.6"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_margin="@dimen/Padding_Medium"
android:textAlignment="textStart"
android:maxLines="3"
tools:text="Ingredient Name" />
<TextView
android:id="@+id/tv_ingredient_quantity"
style="@style/Body_Custom"
android:layout_weight="0.4"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_margin="@dimen/Padding_Medium"
android:textAlignment="textEnd"
tools:text="Ingredient quantity" />
</LinearLayout>
Android Manifest Code
<receiver android:name=".components.EasyBakeWidget">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="@xml/easy_bake_widget_info" />
</receiver>
<service
android:name=".components.Widget_Service"
android:permission="android.permission.BIND_REMOTEVIEWS" />
Changing my logcat to no filter mode allowed me to see the error which comes from the Home launcher. The error was
Class not found when unmarshalling: com.andre_fernando.easybakerecipes.data_objects.Ingredients
java.lang.ClassNotFoundException: com.andre_fernando.easybakerecipes.data_objects.Ingredients
So I converted the ArrayList of my custom ingredients model into 2 String ArrayList.
Intent lv_intent = new Intent(context,Widget_Service.class);
ArrayList<Ingredients> ingredients_list = recipe.getIngredients();
ArrayList<String> ingredient_name = new ArrayList<>();
ArrayList<String> ingredient_quantity = new ArrayList<>();
for (Ingredients i: ingredients_list) {
ingredient_name.add(i.getIngredient());
ingredient_quantity.add(i.getQuantityWithMeasure());
}
lv_intent.putStringArrayListExtra("name",ingredient_name);
lv_intent.putStringArrayListExtra("quantity",ingredient_quantity);
widget.setRemoteAdapter(R.id.widget_ingredients_list,lv_intent);
This fixed the widget.
Also using a content provider to get the data also fixed the widget.