a good amount of maintenance work

README.md

@@ -1,25 +1,25 @@
 <img alt="Icon" src="app/src/main/res/mipmap-xxhdpi/ic_launcher.png?raw=true" align="left" hspace="1" vspace="1">
 
 <a alt='Buy Me a Coffee at ko-fi.com' href='https://ko-fi.com/T6T05M4O' target='_blank' align='right'><img align='right' height='36' style='border:0px;height:36px;' src='https://az743702.vo.msecnd.net/cdn/kofi4.png?v=0' border='0' /></a>
-<a alt='Try it on Google Play' href='https://play.google.com/store/apps/details?id=com.sample.andremion.musicplayer' target='_blank' align='right'><img align='right' height='36' style='border:0px;height:36px;' src='https://developer.android.com/images/brand/en_generic_rgb_wo_60.png' border='0' /></a>
+<a alt='Try it on Google Play' href='https://play.google.com/store/apps/details?id=com.sample.andremion.musicplayer' target='_blank' align='right'><img align='right' height='36' style='border:0px;height:36px;' src='https://play.google.com/intl/en_us/badges/images/generic/en_badge_web_generic.png' border='0' /></a>
 
 # Music Player: From UI Proposal to Code
 
-> This is a prototype made for the [article](https://medium.com/@andremion/music-player-3a85864d6df7#.iklz50r6n). This is not a real music player and don't expect it is.
+> This is a prototype made for the [article](https://stories.uplabs.com/music-player-3a85864d6df7). This is not a real music player.
 
-Some developers have difficult to code when the UI proposal is a bit “sophisticated” or “complex”. Many of them strip a lot of significant portion of the UI or even the Motion when they are coding, and the result ends up quite different of the original proposal.
+Some developers experience difficulty coding when the UI proposal is a bit “sophisticated” or “complex”. Many of them strip a significant portion of the UI or even the Motion when they are coding, and the result ends up quite different from the original proposal.
 
-This article talks about how would be to code an UI proposal, skipping some basic Android details and focusing on transition and animation approach...
+This article talks about how to code an UI proposal, skipping some basic Android details and focusing on transition and animation approach.
 
-Read more at [here](https://medium.com/@andremion/music-player-3a85864d6df7#.iklz50r6n)
+Read more [here](https://stories.uplabs.com/music-player-3a85864d6df7)
 
 #### Special thanks to [michaelizer](https://github.com/michaelizer) for the awesome logo.
 
 </br>
 
-[![License Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-blue.svg?style=true)](http://www.apache.org/licenses/LICENSE-2.0)
+[![License Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-blue.svg?style=true)](https://www.apache.org/licenses/LICENSE-2.0)
 ![minSdkVersion 21](https://img.shields.io/badge/minSdkVersion-21-red.svg?style=true)
-![compileSdkVersion 27](https://img.shields.io/badge/compileSdkVersion-27-yellow.svg?style=true)
+![compileSdkVersion 28](https://img.shields.io/badge/compileSdkVersion-28-yellow.svg?style=true)
 
 [![Android Arsenal](https://img.shields.io/badge/Android%20Arsenal-Music--Player-green.svg?style=true)](https://android-arsenal.com/details/3/3855)
 [![MaterialUp Music-Player](https://img.shields.io/badge/MaterialUp-Music--Player-blue.svg?style=true)](https://www.uplabs.com/posts/music-player-open-source-apps)
@@ -32,13 +32,13 @@ Read more at [here](https://medium.com/@andremion/music-player-3a85864d6df7#.ikl
 
 ## Libraries and tools used in the project
 
-* [Design Support Library](http://developer.android.com/intl/pt-br/tools/support-library/features.html#design)
+* [Design Support Library](https://developer.android.com/topic/libraries/support-library/features)
 The Design package provides APIs to support adding material design components and patterns to your apps.
 * [MusicCoverView](https://github.com/andremion/Music-Cover-View)
-A Subclass of ImageView that 'morphs' into a circle shape and can rotates. Useful to be used as album cover in Music apps.
-* [RecyclerView](http://developer.android.com/intl/pt-br/reference/android/support/v7/widget/RecyclerView.html)
+A Subclass of ImageView that 'morphs' into a circle shape and can rotate. Useful as an album cover in music player apps.
+* [RecyclerView](https://developer.android.com/reference/android/support/v7/widget/RecyclerView)
 A flexible view for providing a limited window into a large data set.
-* [PercentRelativeLayout](https://developer.android.com/reference/android/support/percent/PercentRelativeLayout.html)
+* [PercentRelativeLayout](https://developer.android.com/reference/android/support/percent/PercentRelativeLayout)
 Subclass of RelativeLayout that supports percentage based dimensions and margins.
 
 ## License

app/build.gradle

@@ -1,31 +1,48 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion 28
+    buildToolsVersion '28.0.3'
 
     defaultConfig {
         applicationId "com.sample.andremion.musicplayer"
         minSdkVersion 21
-        targetSdkVersion 27
+        targetSdkVersion 28
         versionCode 3
         versionName "1.0.2"
     }
+
     buildTypes {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
+    compileOptions {
+        encoding = 'UTF-8'
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
 }
 
-final APPCOMPAT_VERSION = '27.1.1'
-final MUSICCOVERVIEW_VERSION = '1.0.0'
+ext {
+    supportLib = '28.0.0'
+}
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation "com.android.support:design:$APPCOMPAT_VERSION"
-    implementation "com.android.support:recyclerview-v7:$APPCOMPAT_VERSION"
-    implementation "com.android.support:percent:$APPCOMPAT_VERSION"
-    implementation "com.github.andremion:musiccoverview:$MUSICCOVERVIEW_VERSION"
+    implementation 'com.google.android.material:material:1.1.0-alpha01'
+    implementation 'androidx.annotation:annotation:1.0.0'
+    implementation 'androidx.appcompat:appcompat:1.0.2'
+    implementation 'androidx.collection:collection:1.0.0'
+    implementation 'androidx.core:core:1.1.0-alpha01'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'androidx.percentlayout:percentlayout:1.0.0'
+    implementation 'androidx.recyclerview:recyclerview:1.0.0'
+
+    implementation 'com.github.andremion:musiccoverview:1.0.0'
+
     testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test:runner:1.1.0'
 }

app/src/androidTest/java/com/sample/andremion/musicplayer/ApplicationTest.java

@@ -1,29 +1,27 @@
-/*
- * Copyright (c) 2016. André Mion
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package com.sample.andremion.musicplayer;
 
-import android.app.Application;
-import android.test.ApplicationTestCase;
+import android.content.Context;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.runner.AndroidJUnit4;
+
+import static org.junit.Assert.assertEquals;
 
 /**
- * <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
  */
-public class ApplicationTest extends ApplicationTestCase<Application> {
-    public ApplicationTest() {
-        super(Application.class);
+@RunWith(AndroidJUnit4.class)
+public class ApplicationTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.sample.andremion.musicplayer", appContext.getPackageName());
     }
-}
+}

app/src/main/AndroidManifest.xml

@@ -20,6 +20,7 @@
         <activity
             android:name=".activities.DetailActivity"
             android:theme="@style/AppTheme.Detail">
+
         </activity>
 
         <service

app/src/main/java/com/sample/andremion/musicplayer/activities/DetailActivity.java

@@ -33,7 +33,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.content_detail);
 
-        mCoverView = (MusicCoverView) findViewById(R.id.cover);
+        mCoverView = findViewById(R.id.cover);
         mCoverView.setCallbacks(new MusicCoverView.Callbacks() {
             @Override
             public void onMorphEnd(MusicCoverView coverView) {

app/src/main/java/com/sample/andremion/musicplayer/activities/MainActivity.java

@@ -18,18 +18,19 @@
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.app.ActivityOptionsCompat;
-import android.support.v4.util.Pair;
-import android.support.v4.view.ViewCompat;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
 import android.view.View;
 
 import com.sample.andremion.musicplayer.R;
 import com.sample.andremion.musicplayer.music.MusicContent;
 import com.sample.andremion.musicplayer.view.RecyclerViewAdapter;
 
+import androidx.core.app.ActivityCompat;
+import androidx.core.app.ActivityOptionsCompat;
+import androidx.core.util.Pair;
+import androidx.core.view.ViewCompat;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
 public class MainActivity extends PlayerActivity {
 
     private View mCoverView;
@@ -53,7 +54,7 @@ protected void onCreate(Bundle savedInstanceState) {
         mFabView = findViewById(R.id.fab);
 
         // Set the recycler adapter
-        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.tracks);
+        RecyclerView recyclerView = findViewById(R.id.tracks);
         assert recyclerView != null;
         recyclerView.setLayoutManager(new LinearLayoutManager(this));
         recyclerView.setAdapter(new RecyclerViewAdapter(MusicContent.ITEMS));

app/src/main/java/com/sample/andremion/musicplayer/activities/PlayerActivity.java

@@ -24,16 +24,17 @@
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Message;
-import android.support.annotation.LayoutRes;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
 import android.text.format.DateUtils;
 import android.widget.TextView;
 
 import com.sample.andremion.musicplayer.R;
 import com.sample.andremion.musicplayer.music.PlayerService;
 import com.sample.andremion.musicplayer.view.ProgressView;
 
+import androidx.annotation.LayoutRes;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
 public abstract class PlayerActivity extends AppCompatActivity {
 
     private PlayerService mService;
@@ -94,9 +95,9 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
     @Override
     public void setContentView(@LayoutRes int layoutResID) {
         super.setContentView(layoutResID);
-        mTimeView = (TextView) findViewById(R.id.time);
-        mDurationView = (TextView) findViewById(R.id.duration);
-        mProgressView = (ProgressView) findViewById(R.id.progress);
+        mTimeView = findViewById(R.id.time);
+        mDurationView = findViewById(R.id.duration);
+        mProgressView = findViewById(R.id.progress);
     }
 
     @Override

app/src/main/java/com/sample/andremion/musicplayer/transition/AnimatedVectorDrawableWrapper.java

@@ -23,10 +23,11 @@
 import android.graphics.drawable.AnimatedVectorDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.Build;
-import android.support.v4.util.ArrayMap;
 
 import java.util.ArrayList;
 
+import androidx.collection.ArrayMap;
+
 public class AnimatedVectorDrawableWrapper extends Animator {
 
     private final AnimatedVectorDrawable mAnimatedVectorDrawable;

app/src/main/java/com/sample/andremion/musicplayer/transition/PlayButtonTransition.java

@@ -20,12 +20,12 @@
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.drawable.AnimatedVectorDrawable;
-import android.support.design.widget.FloatingActionButton;
 import android.transition.Transition;
 import android.transition.TransitionValues;
 import android.util.AttributeSet;
 import android.view.ViewGroup;
 
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import com.sample.andremion.musicplayer.R;
 
 public class PlayButtonTransition extends Transition {

app/src/main/java/com/sample/andremion/musicplayer/view/InsetsPercentRelativeLayout.java

@@ -17,12 +17,13 @@
 package com.sample.andremion.musicplayer.view;
 
 import android.content.Context;
-import android.support.percent.PercentRelativeLayout;
-import android.support.v4.view.ViewCompat;
-import android.support.v4.view.WindowInsetsCompat;
 import android.util.AttributeSet;
 import android.view.View;
 
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+import androidx.percentlayout.widget.PercentRelativeLayout;
+
 public class InsetsPercentRelativeLayout extends PercentRelativeLayout {
 
     public InsetsPercentRelativeLayout(Context context) {
@@ -35,12 +36,9 @@ public InsetsPercentRelativeLayout(Context context, AttributeSet attrs) {
 
     public InsetsPercentRelativeLayout(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
-        ViewCompat.setOnApplyWindowInsetsListener(this, new android.support.v4.view.OnApplyWindowInsetsListener() {
-            @Override
-            public WindowInsetsCompat onApplyWindowInsets(View v, WindowInsetsCompat insets) {
-                setWindowInsets(insets);
-                return insets.consumeSystemWindowInsets();
-            }
+        ViewCompat.setOnApplyWindowInsetsListener(this, (v, insets) -> {
+            setWindowInsets(insets);
+            return insets.consumeSystemWindowInsets();
         });
     }
 

app/src/main/java/com/sample/andremion/musicplayer/view/RecyclerViewAdapter.java

@@ -16,7 +16,6 @@
 
 package com.sample.andremion.musicplayer.view;
 
-import android.support.v7.widget.RecyclerView;
 import android.text.format.DateUtils;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -29,6 +28,8 @@
 
 import java.util.List;
 
+import androidx.recyclerview.widget.RecyclerView;
+
 public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
 
     private final List<MusicItem> mValues;
@@ -52,11 +53,8 @@ public void onBindViewHolder(final ViewHolder holder, int position) {
         holder.mArtistView.setText(holder.mItem.getArtist());
         holder.mDurationView.setText(DateUtils.formatElapsedTime(holder.mItem.getDuration()));
 
-        holder.mView.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                // Nothing to do
-            }
+        holder.mView.setOnClickListener(v -> {
+            // Nothing to do
         });
     }
 
@@ -76,10 +74,10 @@ public static class ViewHolder extends RecyclerView.ViewHolder {
         public ViewHolder(View view) {
             super(view);
             mView = view;
-            mCoverView = (ImageView) view.findViewById(R.id.cover);
-            mTitleView = (TextView) view.findViewById(R.id.title);
-            mArtistView = (TextView) view.findViewById(R.id.artist);
-            mDurationView = (TextView) view.findViewById(R.id.duration);
+            mCoverView = view.findViewById(R.id.cover);
+            mTitleView = view.findViewById(R.id.title);
+            mArtistView = view.findViewById(R.id.artist);
+            mDurationView = view.findViewById(R.id.duration);
         }
     }
 

app/src/main/res/drawable/ic_pause_vector.xml

@@ -1,8 +1,8 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="24dp"
     android:height="24dp"
-    android:viewportHeight="24"
-    android:viewportWidth="24">
+    android:viewportWidth="24"
+    android:viewportHeight="24">
     <group
         android:name="rotation"
         android:pivotX="12"

app/src/main/res/drawable/ic_play_vector.xml

@@ -1,8 +1,8 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="24dp"
     android:height="24dp"
-    android:viewportHeight="24"
-    android:viewportWidth="24">
+    android:viewportWidth="24"
+    android:viewportHeight="24">
     <group
         android:name="rotation"
         android:pivotX="12"