Add loading indicator for trades

.idea/modules.xml

@@ -3,7 +3,6 @@
   <component name="ProjectModuleManager">
     <modules>
       <module fileurl="file://$PROJECT_DIR$/Moodl.iml" filepath="$PROJECT_DIR$/Moodl.iml" />
-      <module fileurl="file://E:\Github\Moodl\Moodl.iml" filepath="E:\Github\Moodl\Moodl.iml" />
       <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
     </modules>
   </component>

app/src/main/java/com/nauk/moodl/Activities/CurrencyDetailsActivity.java

@@ -1,9 +1,12 @@
 package com.nauk.moodl.Activities;
 
+import android.app.ProgressDialog;
+import android.content.Context;
 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Color;
+import android.graphics.ColorFilter;
 import android.graphics.Paint;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
@@ -21,6 +24,7 @@ import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.CardView;
 import android.text.Html;
 import android.text.method.LinkMovementMethod;
+import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.MotionEvent;
 import android.view.View;
@@ -101,6 +105,9 @@ public class CurrencyDetailsActivity extends AppCompatActivity {
     private Button lineChartButton;
     private Button candleStickChartButton;
 
+
+    private View loadingFooter;
+
     private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
             = new BottomNavigationView.OnNavigationItemSelectedListener() {
 
@@ -218,6 +225,11 @@ public class CurrencyDetailsActivity extends AppCompatActivity {
 
         hasBeenModified = false;
 
+        Drawable tradeDrawable = ((ProgressBar) findViewById(R.id.loadingIndicator)).getIndeterminateDrawable();
+        tradeDrawable.mutate();
+        tradeDrawable.setColorFilter(new PorterDuffColorFilter(currency.getChartColor(), PorterDuff.Mode.SRC_IN));
+        tradeDrawable.invalidateSelf();
+
         TradeUpdater updater = new TradeUpdater();
         updater.execute();
     }
@@ -906,8 +918,6 @@ public class CurrencyDetailsActivity extends AppCompatActivity {
 
     private void drawTradeList(ArrayList<com.nauk.moodl.DataManagers.CurrencyData.Trade> trades)
     {
-        findViewById(R.id.tradeProgressBar).setVisibility(View.GONE);
-
         tradeLayout.setOnScrollListener(new AbsListView.OnScrollListener() {
             @Override
             public void onScrollStateChanged(AbsListView absListView, int i) {
@@ -922,7 +932,6 @@ public class CurrencyDetailsActivity extends AppCompatActivity {
                     {
                         flag_loading = true;
 
-                        expand(findViewById(R.id.tradeProgressBar));
                         TradeAdder tradeAdder = new TradeAdder();
                         tradeAdder.execute();
                     }
@@ -934,6 +943,8 @@ public class CurrencyDetailsActivity extends AppCompatActivity {
 
         tradeLayout.setAdapter(tradeListAdapter);
         tradeLayout.setTextFilterEnabled(false);
+
+        findViewById(R.id.tradeLoaderIndicator).setVisibility(View.GONE);
     }
 
     private static void expand(final View v) {
@@ -983,8 +994,28 @@ public class CurrencyDetailsActivity extends AppCompatActivity {
         }
     }
 
+    private void loadingIndicatorGenerator()
+    {
+        loadingFooter = LayoutInflater.from(CurrencyDetailsActivity.this).inflate(R.layout.listview_loading_indicator, null, false);
+
+        Drawable drawable = ((ProgressBar) loadingFooter.findViewById(R.id.progressIndicator)).getIndeterminateDrawable();
+        drawable.mutate();
+        drawable.setColorFilter(new PorterDuffColorFilter(currency.getChartColor(), PorterDuff.Mode.SRC_IN));
+        drawable.invalidateSelf();
+
+        tradeLayout.addFooterView(loadingFooter);
+    }
+
     private class TradeAdder extends AsyncTask<Void, Integer, Void>
     {
+        @Override
+        protected void onPreExecute()
+        {
+            super.onPreExecute();
+
+            loadingIndicatorGenerator();
+        }
+
         @Override
         protected Void doInBackground(Void... voids) {
 
@@ -1006,7 +1037,7 @@ public class CurrencyDetailsActivity extends AppCompatActivity {
                             tradeListAdapter.notifyDataSetChanged();
                             flag_loading = false;
 
-                            findViewById(R.id.tradeProgressBar).setVisibility(View.GONE);
+                            tradeLayout.removeFooterView(loadingFooter);
                         }
                     });
                 }
@@ -1027,8 +1058,6 @@ public class CurrencyDetailsActivity extends AppCompatActivity {
         protected void onPreExecute()
         {
             super.onPreExecute();
-
-            findViewById(R.id.tradeProgressBar).setVisibility(View.VISIBLE);
         }
 
         @Override

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

@@ -625,18 +625,31 @@
                 android:layout_weight="0.5"
                 android:orientation="vertical">
 
+                <LinearLayout
+                    android:id="@+id/tradeLoaderIndicator"
+                    android:layout_width="match_parent"
+                    android:layout_height="30dp"
+                    android:gravity="center"
+                    android:layout_margin="10dp">
+
+                    <ProgressBar
+                        android:id="@+id/loadingIndicator"
+                        android:layout_width="20dp"
+                        android:layout_height="20dp"/>
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="Looking for trades..."/>
+
+                </LinearLayout>
+
                 <ListView
                     android:id="@+id/listTrades"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:orientation="vertical"/>
 
-                <ProgressBar
-                    android:id="@+id/tradeProgressBar"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:layout_gravity="center"/>
-
             </LinearLayout>
 
         </LinearLayout>

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

@@ -15,9 +15,9 @@
             android:layout_height="match_parent"/>
 
         <LinearLayout
+            android:id="@+id/mainLayout"
             android:layout_width="match_parent"
-            android:layout_height="match_parent"
+            android:layout_height="match_parent">
-            android:id="@+id/mainLayout">
 
             <LinearLayout
                 android:padding="5dp"

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

@@ -0,0 +1,19 @@
+<?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="30dp"
+    android:gravity="center"
+    android:layout_margin="10dp">
+
+    <ProgressBar
+        android:id="@+id/progressIndicator"
+        android:layout_width="20dp"
+        android:layout_height="20dp"/>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Looking for more trades..."/>
+
+</LinearLayout>