auto updating list widget

app/src/main/AndroidManifest.xml

@@ -43,6 +43,18 @@
             android:name="net.headlezz.notificationlogger.logger.NotificationProvider"
             android:exported="true"
             />
+
+        <!-- widget stuff -->
+        <receiver android:name=".widget.ListWidgetProvider">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data android:name="android.appwidget.provider"
+                android:resource="@xml/widget_info" />
+        </receiver>
+        <service android:name=".widget.ListWidgetService"
+            android:permission="android.permission.BIND_REMOTEVIEWS"
+            />
     </application>
 
 </manifest>

app/src/main/java/net/headlezz/notificationlogger/DatabaseUtils.java

@@ -8,6 +8,7 @@ import net.headlezz.notificationlogger.logger.BlacklistItem;
 import net.headlezz.notificationlogger.logger.BlacklistTable;
 import net.headlezz.notificationlogger.logger.LoggedNotification;
 import net.headlezz.notificationlogger.logger.Logged_notificationTable;
+import net.headlezz.notificationlogger.widget.WidgetUtils;
 
 public class DatabaseUtils {
 
@@ -16,6 +17,7 @@ public class DatabaseUtils {
                 Logged_notificationTable.CONTENT_URI,
                 Logged_notificationTable.getContentValues(ln, false)
         );
+        WidgetUtils.notifyWidgetsUpdate(context);
     }
 
     public static LoggedNotification getNotificationById(Context context, long id) {
@@ -31,6 +33,7 @@ public class DatabaseUtils {
         // there are no notifications with negative ids, so we use this to select all rows
         String whereClause = Logged_notificationTable.FIELD_NOTIFICATION_ID + " != -1";
         resolver.delete(Logged_notificationTable.CONTENT_URI, whereClause, new String[0]);
+        WidgetUtils.notifyWidgetsUpdate(context);
     }
 
     public static boolean isPackageBlacklisted(Context context, String packageName) {
@@ -81,5 +84,6 @@ public class DatabaseUtils {
                 Logged_notificationTable.FIELD__ID + " = ?",
                 new String[]{String.valueOf(id)}
         );
+        WidgetUtils.notifyWidgetsUpdate(context);
     }
 }

app/src/main/java/net/headlezz/notificationlogger/widget/ListWidgetProvider.java

@@ -0,0 +1,37 @@
+package net.headlezz.notificationlogger.widget;
+
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProvider;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.widget.RemoteViews;
+
+import net.headlezz.notificationlogger.R;
+
+public class ListWidgetProvider extends AppWidgetProvider {
+
+    @Override
+    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        for(int widgetId : appWidgetIds) {
+            RemoteViews rvs = updateWidgetListView(context, widgetId);
+            appWidgetManager.updateAppWidget(appWidgetIds, rvs);
+        }
+        super.onUpdate(context, appWidgetManager, appWidgetIds);
+    }
+
+    private RemoteViews updateWidgetListView(Context context, int appWidgetId) {
+        RemoteViews rvs = new RemoteViews(context.getPackageName(), R.layout.widget_list);
+
+        Intent serviceIntent = new Intent(context, ListWidgetService.class);
+        serviceIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
+        serviceIntent.setData(Uri.parse(serviceIntent.toUri(Intent.URI_INTENT_SCHEME)));
+
+        rvs.setRemoteAdapter(R.id.list_widget_listView, serviceIntent);
+        rvs.setEmptyView(R.id.list_widget_listView, R.id.list_widget_empty_view);
+
+
+
+        return rvs;
+    }
+}

app/src/main/java/net/headlezz/notificationlogger/widget/ListWidgetService.java

@@ -0,0 +1,13 @@
+package net.headlezz.notificationlogger.widget;
+
+import android.appwidget.AppWidgetManager;
+import android.content.Intent;
+import android.widget.RemoteViewsService;
+
+public class ListWidgetService extends RemoteViewsService {
+    @Override
+    public RemoteViewsFactory onGetViewFactory(Intent intent) {
+        int appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
+        return new ListWidgetViewFactory(getApplicationContext(), appWidgetId);
+    }
+}

app/src/main/java/net/headlezz/notificationlogger/widget/ListWidgetViewFactory.java

@@ -0,0 +1,87 @@
+package net.headlezz.notificationlogger.widget;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.text.format.DateUtils;
+import android.widget.RemoteViews;
+import android.widget.RemoteViewsService;
+
+import net.headlezz.notificationlogger.R;
+import net.headlezz.notificationlogger.logger.LoggedNotification;
+import net.headlezz.notificationlogger.logger.Logged_notificationTable;
+
+import timber.log.Timber;
+
+public class ListWidgetViewFactory implements RemoteViewsService.RemoteViewsFactory {
+
+    int mAppWidgetId;
+    Context mContext;
+
+    Cursor mCursor;
+
+    public ListWidgetViewFactory(Context context, int appWidgetId) {
+        mContext = context;
+        this.mAppWidgetId = appWidgetId;
+    }
+
+
+    @Override
+    public void onCreate() { /** ignored **/ }
+
+    @Override
+    public void onDataSetChanged() {
+        Timber.d("ON DATA SET CHANGED");
+        if(mCursor != null) {
+            mCursor.close();
+        }
+        mCursor = mContext.getContentResolver().query(Logged_notificationTable.CONTENT_URI, null, null, null, Logged_notificationTable.FIELD_DATE + " DESC");
+    }
+
+    @Override
+    public void onDestroy() {
+        if(mCursor != null)
+            mCursor.close();
+    }
+
+    @Override
+    public int getCount() {
+        if(mCursor == null) {
+            Timber.d("cursor is null");
+            return 0;
+        }
+        return mCursor.getCount();
+    }
+
+    @Override
+    public RemoteViews getViewAt(int position) {
+        RemoteViews rv = new RemoteViews(mContext.getPackageName(), R.layout.widget_list_item);
+        mCursor.moveToPosition(position);
+
+        LoggedNotification notification = Logged_notificationTable.getRow(mCursor, false);
+
+        rv.setTextViewText(R.id.widget_list_item_title, notification.appName);
+        rv.setTextViewText(R.id.widget_list_item_notification, notification.title + ": " + notification.message);
+        rv.setTextViewText(R.id.widget_list_item_date, DateUtils.formatDateTime(mContext, notification.date, DateUtils.FORMAT_ABBREV_ALL | DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_SHOW_DATE));
+        return rv;
+    }
+
+    @Override
+    public RemoteViews getLoadingView() {
+        return null;
+    }
+
+    @Override
+    public int getViewTypeCount() {
+        return 1;
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return position;
+    }
+
+    @Override
+    public boolean hasStableIds() {
+        return true;
+    }
+}

app/src/main/java/net/headlezz/notificationlogger/widget/WidgetUtils.java

@@ -0,0 +1,17 @@
+package net.headlezz.notificationlogger.widget;
+
+import android.appwidget.AppWidgetManager;
+import android.content.ComponentName;
+import android.content.Context;
+
+import net.headlezz.notificationlogger.R;
+
+public class WidgetUtils {
+
+    public static void notifyWidgetsUpdate(Context context) {
+        AppWidgetManager manager = AppWidgetManager.getInstance(context);
+        int[] appWidgetIds = manager.getAppWidgetIds(new ComponentName(context, ListWidgetProvider.class));
+        manager.notifyAppWidgetViewDataChanged(appWidgetIds, R.id.list_widget_listView);
+    }
+
+}

app/src/main/res/layout/widget_list.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="4dp">
+
+    <!-- ListView to be shown on widget -->
+    <ListView
+        android:dividerHeight="4dp"
+        android:id="@+id/list_widget_listView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+    <!-- Empty view is show if list items are empty -->
+    <TextView
+        android:id="@+id/list_widget_empty_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:text="Empty list"
+        android:textColor="#ffffff"
+        android:textSize="20sp"
+        android:visibility="gone" />
+
+</LinearLayout>

app/src/main/res/layout/widget_list_item.xml

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:background="@android:color/white"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="8dp">
+
+    <TextView
+        android:textAppearance="@style/TextAppearance.AppCompat.Body1"
+        android:id="@+id/widget_list_item_title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:clickable="false"
+        android:textColor="@android:color/black"
+        android:textStyle="bold"
+        tools:text="appname" />
+
+    <TextView
+        android:textAppearance="@style/TextAppearance.AppCompat.Caption"
+        android:layout_below="@+id/widget_list_item_title"
+        android:id="@+id/widget_list_item_notification"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:clickable="false"
+        android:textColor="@android:color/black"
+        tools:text="message" />
+
+    <TextView
+        android:textAppearance="@style/TextAppearance.AppCompat.Caption"
+        android:id="@+id/widget_list_item_date"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:clickable="false"
+        android:textColor="@android:color/black"
+        tools:text="date"
+        android:layout_alignTop="@+id/widget_list_item_title"
+        android:layout_alignParentEnd="true" />
+
+</RelativeLayout>

app/src/main/res/xml/widget_info.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:minWidth="250dp"
+    android:minHeight="110dp"
+    android:updatePeriodMillis="300000"
+    android:previewImage="@drawable/widget_list_preview"
+    android:initialLayout="@layout/widget_list"
+    android:resizeMode="horizontal|vertical"
+    android:widgetCategory="home_screen">
+</appwidget-provider>