fix:Stock Hawk app supports layout mirroring using both the RTL attribute and the start/end tags.

app/src/main/AndroidManifest.xml

@@ -41,6 +41,26 @@
         <activity
             android:name=".ui.DetailActivity"
             android:label="@string/title_activity_detail"></activity>
+
+        <receiver
+            android:label="@string/app_name"
+            android:enabled="true"
+            android:name=".widget.StockWidgetProvider">
+
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+                <action android:name="com.udacity.android.stockhack.app.ACTION_DATA_UPDATED" />
+            </intent-filter>
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/stock_widget_provider" />
+        </receiver>
+
+        <service
+            android:name=".widget.StockWidgetService"
+            android:exported="false"
+            android:enabled="true"
+            android:permission="android.permission.BIND_REMOTEVIEWS" />
     </application>
 
 </manifest>

app/src/main/java/com/udacity/stockhawk/data/Contract.java

@@ -31,6 +31,9 @@ public static final class Quote implements BaseColumns {
         public static final int POSITION_ABSOLUTE_CHANGE = 3;
         public static final int POSITION_PERCENTAGE_CHANGE = 4;
         public static final int POSITION_HISTORY = 5;
+        public static final String SORTORDER_ASCENDING = " ASC";
+        public static final String SORTORDER_DESCENDING = " DESC";
+
         public static final ImmutableList<String> QUOTE_COLUMNS = ImmutableList.of(
                 _ID,
                 COLUMN_SYMBOL,

app/src/main/java/com/udacity/stockhawk/data/StockProvider.java

@@ -70,7 +70,7 @@ public Cursor query(@NonNull Uri uri, String[] projection, String selection, Str
         }
 
         Context context = getContext();
-        if (context != null){
+        if (context != null) {
             returnCursor.setNotificationUri(context.getContentResolver(), uri);
         }
 
@@ -103,7 +103,7 @@ public Uri insert(@NonNull Uri uri, ContentValues values) {
         }
 
         Context context = getContext();
-        if (context != null){
+        if (context != null) {
             context.getContentResolver().notifyChange(uri, null);
         }
 
@@ -142,7 +142,7 @@ public int delete(@NonNull Uri uri, String selection, String[] selectionArgs) {
 
         if (rowsDeleted != 0) {
             Context context = getContext();
-            if (context != null){
+            if (context != null) {
                 context.getContentResolver().notifyChange(uri, null);
             }
         }

app/src/main/java/com/udacity/stockhawk/ui/DetailActivity.java

@@ -9,27 +9,20 @@
 
 public class DetailActivity extends AppCompatActivity {
 
-    String history="";
-    String symbol="";
+    String history = "";
+    String symbol = "";
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_detail);
 
-
         Bundle extras = getIntent().getExtras();
-        if(extras!=null) {
-            history = getIntent().getExtras().getString("history");
-            symbol = getIntent().getExtras().getString("symbol");
-        }
-        Bundle arguments = new Bundle();
-        arguments.putString("history",history);
-        arguments.putString("symbol",symbol);
         DetailActivityFragment fragment = new DetailActivityFragment();
-        fragment.setArguments(arguments);
+        fragment.setArguments(extras);
         getSupportFragmentManager().beginTransaction()
-                    .add(R.id.fragment_detail_container, fragment)
-                    .commit();
+                .add(R.id.fragment_detail_container, fragment)
+                .commit();
 
     }
 

app/src/main/java/com/udacity/stockhawk/ui/DetailActivityFragment.java

@@ -20,6 +20,7 @@
 import com.github.mikephil.charting.data.LineDataSet;
 import com.github.mikephil.charting.formatter.IAxisValueFormatter;
 import com.udacity.stockhawk.R;
+import com.udacity.stockhawk.widget.StockWidgetProvider;
 
 import java.util.ArrayList;
 import java.util.Calendar;
@@ -33,8 +34,8 @@
  */
 public class DetailActivityFragment extends Fragment implements IAxisValueFormatter {
 
-    String history="";
-    String symbol="";
+    String history = "";
+    String symbol = "";
     String[] History;
     List<Entry> entries;
     String[] data;
@@ -44,6 +45,7 @@ public class DetailActivityFragment extends Fragment implements IAxisValueFormat
     Legend legend;
     @BindView(R.id.lineChart)
     LineChart lineChart;
+
     public DetailActivityFragment() {
     }
 
@@ -54,28 +56,28 @@ public View onCreateView(LayoutInflater inflater, ViewGroup container,
         ButterKnife.bind(this, view);
         Bundle arguments = getArguments();
         if (arguments != null) {
-            history=arguments.getString("history");
-            symbol=arguments.getString("symbol");
+            history = arguments.getString(StockWidgetProvider.EXTRA_HISTORY);
+            symbol = arguments.getString(StockWidgetProvider.EXTRA_SYMBOL);
         }
 
-        if(history==null){
+        if (history == null) {
 
-        }else{
+        } else {
             entries = new ArrayList<>();
             stockDates = new ArrayList<>();
             History = history.split("\n");    // break up entries by the newline
             int timeCount = 0;
 
-            for ( String historyDataItem : History ) {
+            for (String historyDataItem : History) {
                 data = historyDataItem.split(", ");
-                entries.add(new Entry( timeCount++, Float.parseFloat(data[1])) );
+                entries.add(new Entry(timeCount++, Float.parseFloat(data[1])));
                 stockDates.add(data[0]);
             }
 
             lineChartStock();
         }
-        Log.d("Hello Vikas:=","Details = Symbol:"+symbol+" "+": "+history);
-        Toast.makeText(getActivity(),""+symbol+"-"+history,Toast.LENGTH_SHORT);
+        Log.d("Hello Vikas:=", "Details = Symbol:" + symbol + " " + ": " + history);
+        Toast.makeText(getActivity(), "" + symbol + "-" + history, Toast.LENGTH_SHORT);
         return view;
     }
 
@@ -105,24 +107,24 @@ private void lineChartStock() {
     }
 
     // This is used to store XY-axis Settings
-    private void XYAxis(){
+    private void XYAxis() {
         XAxis XAxis = lineChart.getXAxis();
         XAxis.setValueFormatter(this);
-        XAxis.setTextColor (Color.BLACK);
-        YAxis YAxisL = lineChart.getAxis( YAxis.AxisDependency.LEFT);
-        YAxis YAxisR = lineChart.getAxis( YAxis.AxisDependency.RIGHT);
-        YAxisL.setTextColor (Color.BLACK);
-        YAxisR.setTextColor (Color.BLACK);
+        XAxis.setTextColor(Color.BLACK);
+        YAxis YAxisL = lineChart.getAxis(YAxis.AxisDependency.LEFT);
+        YAxis YAxisR = lineChart.getAxis(YAxis.AxisDependency.RIGHT);
+        YAxisL.setTextColor(Color.BLACK);
+        YAxisR.setTextColor(Color.BLACK);
 
     }
 
     @Override
     public String getFormattedValue(float value, AxisBase axis) {
         Calendar calendar = Calendar.getInstance();
-        calendar.setTimeInMillis((long) Float.parseFloat(stockDates.get((int)Math.floor(value))));
+        calendar.setTimeInMillis((long) Float.parseFloat(stockDates.get((int) Math.floor(value))));
         int mYear = calendar.get(Calendar.YEAR) - 2000;
         int mMonth = calendar.get(Calendar.MONTH) + 1;
         int mDay = calendar.get(Calendar.DAY_OF_MONTH);
-        return mDay+"/"+mMonth+"/"+mYear;
+        return mDay + "/" + mMonth + "/" + mYear;
     }
 }

app/src/main/java/com/udacity/stockhawk/ui/MainActivity.java

@@ -24,10 +24,10 @@
 import com.udacity.stockhawk.data.Contract;
 import com.udacity.stockhawk.data.PrefUtils;
 import com.udacity.stockhawk.sync.QuoteSyncJob;
+import com.udacity.stockhawk.widget.StockWidgetProvider;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
-import timber.log.Timber;
 
 public class MainActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks<Cursor>,
         SwipeRefreshLayout.OnRefreshListener,
@@ -47,11 +47,12 @@ public class MainActivity extends AppCompatActivity implements LoaderManager.Loa
 
     @Override
     public void onClick(String symbol, String history) {
-        Intent intent=new Intent(MainActivity.this,com.udacity.stockhawk.ui.DetailActivity.class);
-        intent.putExtra("symbol",symbol);
-        intent.putExtra("history",history);
+        Bundle extras = new Bundle();
+        extras.putString(StockWidgetProvider.EXTRA_SYMBOL, symbol);
+        extras.putString(StockWidgetProvider.EXTRA_HISTORY, history);
+        Intent intent = new Intent(MainActivity.this, DetailActivity.class)
+                .putExtras(extras);
         startActivity(intent);
-        Timber.d("Symbol clicked: %s", symbol);
     }
 
     @Override
@@ -121,7 +122,7 @@ public void button(@SuppressWarnings("UnusedParameters") View view) {
     }
 
     void addStock(String symbol) {
-        if (symbol != null && !symbol.isEmpty() && symbol.matches("^[A-Z]+$")) {
+        if (symbol != null && !symbol.isEmpty() && symbol.matches("^[A-Z]+$") || symbol.matches("^[a-z]+$")) {
 
             if (networkUp()) {
                 swipeRefreshLayout.setRefreshing(true);
@@ -132,8 +133,8 @@ void addStock(String symbol) {
 
             PrefUtils.addStock(this, symbol);
             QuoteSyncJob.syncImmediately(this);
-        }else{
-            Toast.makeText(this,"Invalid Symbol", Toast.LENGTH_LONG).show();
+        } else {
+            Toast.makeText(this, "Invalid Symbol", Toast.LENGTH_LONG).show();
 
         }
 
@@ -155,6 +156,9 @@ public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
             error.setVisibility(View.GONE);
         }
         adapter.setCursor(data);
+
+        // Send update broadcast to update the widget
+        sendBroadcast(new Intent("android.appwidget.action.APPWIDGET_UPDATE"));
     }
 
 

app/src/main/java/com/udacity/stockhawk/ui/StockAdapter.java

@@ -26,8 +26,8 @@ class StockAdapter extends RecyclerView.Adapter<StockAdapter.StockViewHolder> {
     private final DecimalFormat dollarFormatWithPlus;
     private final DecimalFormat dollarFormat;
     private final DecimalFormat percentageFormat;
-    private Cursor cursor;
     private final StockAdapterOnClickHandler clickHandler;
+    private Cursor cursor;
 
     StockAdapter(Context context, StockAdapterOnClickHandler clickHandler) {
         this.context = context;
@@ -129,7 +129,7 @@ public void onClick(View v) {
             int adapterPosition = getAdapterPosition();
             cursor.moveToPosition(adapterPosition);
             int symbolColumn = cursor.getColumnIndex(Contract.Quote.COLUMN_SYMBOL);
-            clickHandler.onClick(cursor.getString(symbolColumn),cursor.getString(Contract.Quote.POSITION_HISTORY));
+            clickHandler.onClick(cursor.getString(symbolColumn), cursor.getString(Contract.Quote.POSITION_HISTORY));
 
         }
 

app/src/main/java/com/udacity/stockhawk/util/Util.java

@@ -0,0 +1,39 @@
+package com.udacity.stockhawk.util;
+
+import android.widget.RemoteViews;
+
+import com.udacity.stockhawk.R;
+import com.udacity.stockhawk.data.Contract;
+
+/**
+ * Created by Dell on 3/31/2017.
+ */
+
+public class Util {
+    private static String priceBackground =  "setBackgroundResource";
+    public static final String[] COLUMN_PROJECTION = {
+            Contract.Quote._ID,
+            Contract.Quote.COLUMN_SYMBOL,
+            Contract.Quote.COLUMN_PRICE,
+            Contract.Quote.COLUMN_ABSOLUTE_CHANGE,
+            Contract.Quote.COLUMN_PERCENTAGE_CHANGE,
+            Contract.Quote.COLUMN_HISTORY,
+    };
+
+
+    public static void setBackColourPrice(RemoteViews row, String percent) {
+        if ( Float.parseFloat(percent) > 0 )
+            row.setInt(R.id.change, priceBackground, R.color.material_green_700);
+        else
+            row.setInt(R.id.change, priceBackground, R.color.material_red_700);
+    }
+
+    public static String addSignOnPrice(String percent) {
+        StringBuilder newPercent = new StringBuilder(percent);
+        if (Float.parseFloat(percent) > 0 )
+            newPercent.insert( 0, "+" );
+        return newPercent.toString();
+    }
+
+
+}

app/src/main/java/com/udacity/stockhawk/widget/StockWidgetProvider.java

@@ -0,0 +1,63 @@
+package com.udacity.stockhawk.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.net.Uri;
+import android.widget.RemoteViews;
+
+import com.udacity.stockhawk.R;
+import com.udacity.stockhawk.ui.DetailActivity;
+import com.udacity.stockhawk.ui.MainActivity;
+
+/**
+ * Created by Dell on 3/31/2017.
+ */
+
+public class StockWidgetProvider extends AppWidgetProvider {
+
+    public static String EXTRA_SYMBOL = "_SYMBOL";
+    public static String EXTRA_HISTORY = "_HISTORY";
+    public static String ACTION_UPDATE = "android.appwidget.action.APPWIDGET_UPDATE";
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        super.onReceive(context, intent);
+        int[] appWidgetIDs;
+        if (intent.getAction().equals(ACTION_UPDATE)) {
+            AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
+            appWidgetIDs = appWidgetManager.getAppWidgetIds(new ComponentName(context, getClass()));
+            appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetIDs, R.id.stocklist);
+        }
+    }
+
+    @Override
+    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+
+        for (int appWidgetId : appWidgetIds) {
+
+            RemoteViews widgetViews = new RemoteViews(context.getPackageName(), R.layout.stock_widget);
+            Intent svcIntent = new Intent(context, StockWidgetService.class);
+            svcIntent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
+
+            svcIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
+            svcIntent.setData(Uri.parse(svcIntent.toUri(Intent.URI_INTENT_SCHEME)));
+            widgetViews.setRemoteAdapter(R.id.stocklist, svcIntent);
+            widgetViews.setEmptyView(R.id.stocklist, R.id.emptyMessage);
+
+            Intent clickAppIntent = new Intent(context, MainActivity.class);
+            Intent clickIntent = new Intent(context, DetailActivity.class);
+            PendingIntent appPI = PendingIntent.getActivity(context, 0, clickAppIntent, PendingIntent.FLAG_UPDATE_CURRENT);
+            PendingIntent clickPI = PendingIntent.getActivity(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);
+            widgetViews.setOnClickPendingIntent(R.id.stockTitle, appPI);
+            widgetViews.setPendingIntentTemplate(R.id.stocklist, clickPI);
+
+            appWidgetManager.updateAppWidget(appWidgetId, widgetViews);
+        }
+
+        super.onUpdate(context, appWidgetManager, appWidgetIds);
+    }
+}

app/src/main/java/com/udacity/stockhawk/widget/StockWidgetService.java

@@ -0,0 +1,14 @@
+package com.udacity.stockhawk.widget;
+
+import android.content.Intent;
+import android.widget.RemoteViewsService;
+
+/**
+ * Created by Dell on 3/31/2017.
+ */
+public class StockWidgetService extends RemoteViewsService {
+    @Override
+    public RemoteViewsService.RemoteViewsFactory onGetViewFactory(Intent intent) {
+        return (new StockWidgetViewsFactory(this.getApplicationContext(), intent));
+    }
+}