Updated Custom tab code and added buttons at the bottom of the article viewer.

app/src/main/java/apps/amine/bou/readerforselfoss/ReaderActivity.kt

@@ -6,6 +6,7 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.ImageButton
 import android.widget.ImageView
 import android.widget.TextView
 import apps.amine.bou.readerforselfoss.api.mercury.MercuryApi
@@ -44,6 +45,9 @@ class ReaderActivity : DragDismissActivity() {
         val content = v.findViewById(R.id.content) as HtmlTextView
         val url = intent.getStringExtra("url")
         val parser = MercuryApi(getString(R.string.mercury))
+        val browserBtn: ImageButton = v.findViewById(R.id.browserBtn) as ImageButton
+        val shareBtn: ImageButton = v.findViewById(R.id.shareBtn) as ImageButton
+
 
         val customTabsIntent = buildCustomTabsIntent(this@ReaderActivity)
         mCustomTabActivityHelper = CustomTabActivityHelper()
@@ -52,13 +56,30 @@ class ReaderActivity : DragDismissActivity() {
 
         parser.parseUrl(url).enqueue(object : Callback<ParsedContent> {
             override fun onResponse(call: Call<ParsedContent>, response: Response<ParsedContent>) {
-                if (response.body() != null) {
+                if (response.body() != null && response.body()!!.content.isNotEmpty()) {
                     source.text = response.body()!!.domain
                     title.text = response.body()!!.title
                     if (response.body()!!.content != null && !response.body()!!.content.isEmpty())
                         content.setHtml(response.body()!!.content, HtmlHttpImageGetter(content, null, true))
                     if (response.body()!!.lead_image_url != null && !response.body()!!.lead_image_url.isEmpty())
                         Glide.with(applicationContext).load(response.body()!!.lead_image_url).asBitmap().fitCenter().into(image)
+
+                    shareBtn.setOnClickListener {
+                        val sendIntent = Intent()
+                        sendIntent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
+                        sendIntent.action = Intent.ACTION_SEND
+                        sendIntent.putExtra(Intent.EXTRA_TEXT, response.body()!!.url)
+                        sendIntent.type = "text/plain"
+                        startActivity(Intent.createChooser(sendIntent, getString(R.string.share)).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK))
+                    }
+
+                    browserBtn.setOnClickListener {
+                        val intent = Intent(Intent.ACTION_VIEW)
+                        intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
+                        intent.data = Uri.parse(response.body()!!.url)
+                        startActivity(intent)
+                    }
+
                     hideProgressBar()
                 } else {
                     errorAfterMercuryCall()

app/src/main/java/apps/amine/bou/readerforselfoss/utils/customtabs/CustomTabActivityHelper.java

@@ -1,7 +1,6 @@
 package apps.amine.bou.readerforselfoss.utils.customtabs;
 
 import android.app.Activity;
-import android.content.ComponentName;
 import android.net.Uri;
 import android.os.Bundle;
 import android.support.customtabs.CustomTabsClient;
@@ -11,28 +10,30 @@ import android.support.customtabs.CustomTabsSession;
 
 import java.util.List;
 
-@SuppressWarnings("ALL")
+/**
-public class CustomTabActivityHelper {
+ * This is a helper class to manage the connection to the Custom Tabs Service.
+ */
+public class CustomTabActivityHelper implements ServiceConnectionCallback {
     private CustomTabsSession mCustomTabsSession;
     private CustomTabsClient mClient;
     private CustomTabsServiceConnection mConnection;
     private ConnectionCallback mConnectionCallback;
 
     /**
-     * Opens the URL on a Custom Tab if possible. Otherwise fallsback to opening it on a WebView
+     * Opens the URL on a Custom Tab if possible. Otherwise fallsback to opening it on a WebView.
      *
-     * @param activity The host activity
+     * @param activity The host activity.
-     * @param customTabsIntent a CustomTabsIntent to be used if Custom Tabs is available
+     * @param customTabsIntent a CustomTabsIntent to be used if Custom Tabs is available.
-     * @param uri the Uri to be opened
+     * @param uri the Uri to be opened.
-     * @param fallback a CustomTabFallback to be used if Custom Tabs is not available
+     * @param fallback a CustomTabFallback to be used if Custom Tabs is not available.
      */
     public static void openCustomTab(Activity activity,
-                                     CustomTabsIntent customTabsIntent,
+            CustomTabsIntent customTabsIntent,
-                                     Uri uri,
+            Uri uri,
-                                     CustomTabFallback fallback) {
+            CustomTabFallback fallback) {
         String packageName = CustomTabsHelper.getPackageNameToUse(activity);
 
-        //If we cant find a package name, it means there's no browser that supports
+        //If we cant find a package name, it means theres no browser that supports
         //Chrome Custom Tabs installed. So, we fallback to the webview
         if (packageName == null) {
             if (fallback != null) {
@@ -45,22 +46,21 @@ public class CustomTabActivityHelper {
     }
 
     /**
-     * Unbinds the Activity from the Custom Tabs Service
+     * Unbinds the Activity from the Custom Tabs Service.
-     * @param activity the activity that is connected to the service
+     * @param activity the activity that is connected to the service.
      */
     public void unbindCustomTabsService(Activity activity) {
-        try {
+        if (mConnection == null) return;
-            if (mConnection == null) return;
+        activity.unbindService(mConnection);
-            activity.unbindService(mConnection);
+        mClient = null;
-            mClient = null;
+        mCustomTabsSession = null;
-            mCustomTabsSession = null;
+        mConnection = null;
-        } catch (RuntimeException e) {}
     }
 
     /**
-     * Creates or retrieves an exiting CustomTabsSession
+     * Creates or retrieves an exiting CustomTabsSession.
      *
-     * @return a CustomTabsSession
+     * @return a CustomTabsSession.
      */
     public CustomTabsSession getSession() {
         if (mClient == null) {
@@ -72,7 +72,7 @@ public class CustomTabActivityHelper {
     }
 
     /**
-     * Register a Callback to be called when connected or disconnected from the Custom Tabs Service
+     * Register a Callback to be called when connected or disconnected from the Custom Tabs Service.
      * @param connectionCallback
      */
     public void setConnectionCallback(ConnectionCallback connectionCallback) {
@@ -80,65 +80,70 @@ public class CustomTabActivityHelper {
     }
 
     /**
-     * Binds the Activity to the Custom Tabs Service
+     * Binds the Activity to the Custom Tabs Service.
-     * @param activity the activity to be binded to the service
+     * @param activity the activity to be binded to the service.
      */
     public void bindCustomTabsService(Activity activity) {
         if (mClient != null) return;
 
         String packageName = CustomTabsHelper.getPackageNameToUse(activity);
         if (packageName == null) return;
-        mConnection = new CustomTabsServiceConnection() {
-            @Override
-            public void onCustomTabsServiceConnected(ComponentName name, CustomTabsClient client) {
-                mClient = client;
-                mClient.warmup(0L);
-                if (mConnectionCallback != null) mConnectionCallback.onCustomTabsConnected();
-                //Initialize a session as soon as possible.
-                getSession();
-            }
 
-            @Override
+        mConnection = new ServiceConnection(this);
-            public void onServiceDisconnected(ComponentName name) {
-                mClient = null;
-                if (mConnectionCallback != null) mConnectionCallback.onCustomTabsDisconnected();
-            }
-        };
         CustomTabsClient.bindCustomTabsService(activity, packageName, mConnection);
     }
 
+    /**
+     * @see {@link CustomTabsSession#mayLaunchUrl(Uri, Bundle, List)}.
+     * @return true if call to mayLaunchUrl was accepted.
+     */
     public boolean mayLaunchUrl(Uri uri, Bundle extras, List<Bundle> otherLikelyBundles) {
         if (mClient == null) return false;
 
         CustomTabsSession session = getSession();
-        return session != null && session.mayLaunchUrl(uri, extras, otherLikelyBundles);
+        if (session == null) return false;
 
+        return session.mayLaunchUrl(uri, extras, otherLikelyBundles);
+    }
+
+    @Override
+    public void onServiceConnected(CustomTabsClient client) {
+        mClient = client;
+        mClient.warmup(0L);
+        if (mConnectionCallback != null) mConnectionCallback.onCustomTabsConnected();
+    }
+
+    @Override
+    public void onServiceDisconnected() {
+        mClient = null;
+        mCustomTabsSession = null;
+        if (mConnectionCallback != null) mConnectionCallback.onCustomTabsDisconnected();
     }
 
     /**
      * A Callback for when the service is connected or disconnected. Use those callbacks to
-     * handle UI changes when the service is connected or disconnected
+     * handle UI changes when the service is connected or disconnected.
      */
     public interface ConnectionCallback {
         /**
-         * Called when the service is connected
+         * Called when the service is connected.
          */
         void onCustomTabsConnected();
 
         /**
-         * Called when the service is disconnected
+         * Called when the service is disconnected.
          */
         void onCustomTabsDisconnected();
     }
 
     /**
-     * To be used as a fallback to open the Uri when Custom Tabs is not available
+     * To be used as a fallback to open the Uri when Custom Tabs is not available.
      */
     public interface CustomTabFallback {
         /**
          *
-         * @param activity The Activity that wants to open the Uri
+         * @param activity The Activity that wants to open the Uri.
-         * @param uri The uri to be opened by the fallback
+         * @param uri The uri to be opened by the fallback.
          */
         void openUri(Activity activity, Uri uri);
     }

app/src/main/java/apps/amine/bou/readerforselfoss/utils/customtabs/ServiceConnection.java

@@ -0,0 +1,32 @@
+package apps.amine.bou.readerforselfoss.utils.customtabs;
+
+import android.content.ComponentName;
+import android.support.customtabs.CustomTabsClient;
+import android.support.customtabs.CustomTabsServiceConnection;
+
+import java.lang.ref.WeakReference;
+
+/**
+ * Implementation for the CustomTabsServiceConnection that avoids leaking the
+ * ServiceConnectionCallback
+ */
+public class ServiceConnection extends CustomTabsServiceConnection {
+    // A weak reference to the ServiceConnectionCallback to avoid leaking it.
+    private WeakReference<ServiceConnectionCallback> mConnectionCallback;
+
+    public ServiceConnection(ServiceConnectionCallback connectionCallback) {
+        mConnectionCallback = new WeakReference<>(connectionCallback);
+    }
+
+    @Override
+    public void onCustomTabsServiceConnected(ComponentName name, CustomTabsClient client) {
+        ServiceConnectionCallback connectionCallback = mConnectionCallback.get();
+        if (connectionCallback != null) connectionCallback.onServiceConnected(client);
+    }
+
+    @Override
+    public void onServiceDisconnected(ComponentName name) {
+        ServiceConnectionCallback connectionCallback = mConnectionCallback.get();
+        if (connectionCallback != null) connectionCallback.onServiceDisconnected();
+    }
+}

app/src/main/java/apps/amine/bou/readerforselfoss/utils/customtabs/ServiceConnectionCallback.java

@@ -0,0 +1,18 @@
+package apps.amine.bou.readerforselfoss.utils.customtabs;
+
+
+import android.support.customtabs.CustomTabsClient;
+
+
+public interface ServiceConnectionCallback {
+    /**
+     * Called when the service is connected.
+     * @param client a CustomTabsClient
+     */
+    void onServiceConnected(CustomTabsClient client);
+
+    /**
+     * Called when the service is disconnected.
+     */
+    void onServiceDisconnected();
+}

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

@@ -62,5 +62,64 @@
         app:layout_constraintHorizontal_bias="0.0"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/title" />
+        app:layout_constraintTop_toBottomOf="@+id/title"
+        tools:text="Some text @android:string/fingerprint_icon_content_description" />
+
+    <android.support.constraint.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="35dp"
+        android:layout_marginBottom="0dp"
+        android:layout_marginEnd="0dp"
+        android:layout_marginRight="16dp"
+        android:layout_marginTop="16dp"
+        android:background="#BBBBBB"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.0"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/content"
+        app:layout_constraintVertical_bias="1.0">
+
+        <ImageButton
+            android:id="@+id/browserBtn"
+            android:layout_width="35dp"
+            android:layout_height="35dp"
+            android:layout_centerVertical="true"
+            android:layout_marginEnd="16dp"
+            android:layout_marginRight="16dp"
+            android:layout_toLeftOf="@+id/shareBtn"
+            android:layout_toStartOf="@+id/shareBtn"
+            android:adjustViewBounds="true"
+            android:background="@android:color/transparent"
+            android:elevation="5dp"
+            android:padding="4dp"
+            android:scaleType="centerCrop"
+            android:src="@drawable/ic_open_in_browser_black_24dp"
+            android:tint="#000000"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/shareBtn"
+            app:layout_constraintHorizontal_bias="0.5"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <ImageButton
+            android:id="@+id/shareBtn"
+            android:layout_width="35dp"
+            android:layout_height="35dp"
+            android:adjustViewBounds="true"
+            android:background="@android:color/transparent"
+            android:elevation="5dp"
+            android:padding="4dp"
+            android:scaleType="centerCrop"
+            android:src="@drawable/ic_share_black_24dp"
+            android:tint="#000000"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.5"
+            app:layout_constraintStart_toEndOf="@+id/browserBtn"
+            app:layout_constraintTop_toTopOf="parent" />
+
+    </android.support.constraint.ConstraintLayout>
+
 </android.support.constraint.ConstraintLayout>

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

@@ -54,65 +54,64 @@
         android:gravity="start" />
 
     <RelativeLayout
+        android:id="@+id/actionBar"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
+        android:background="#BBBBBB"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/sourceTitleAndDate">
-        app:layout_constraintTop_toBottomOf="@+id/sourceTitleAndDate"
-        android:id="@+id/actionBar"
-        android:background="#BBBBBB"
-        android:visibility="gone">
-
 
         <com.like.LikeButton
-            app:icon_type="heart"
-            app:icon_size="22dp"
             android:id="@+id/favButton"
             android:layout_width="35dp"
             android:layout_height="35dp"
+            android:layout_alignParentEnd="true"
+            android:layout_alignParentRight="true"
 
             android:layout_centerVertical="true"
-            android:layout_alignParentRight="true"
+            android:layout_marginEnd="8dp"
-            android:layout_alignParentEnd="true"
+            android:layout_marginRight="8dp"
             android:elevation="5dp"
             android:padding="4dp"
-            android:layout_marginEnd="8dp"
+            app:icon_size="22dp"
-            android:layout_marginRight="8dp"/>
+            app:icon_type="heart" />
 
         <ImageButton
+            android:id="@+id/shareBtn"
             android:layout_width="35dp"
             android:layout_height="35dp"
-            android:src="@drawable/ic_share_black_24dp"
             android:layout_centerVertical="true"
+            android:layout_marginEnd="16dp"
+            android:layout_marginRight="16dp"
             android:layout_toLeftOf="@+id/favButton"
             android:layout_toStartOf="@+id/favButton"
-            android:id="@+id/shareBtn"
+            android:adjustViewBounds="true"
             android:background="@android:color/transparent"
             android:elevation="5dp"
-            android:layout_marginEnd="16dp"
+            android:padding="4dp"
-            android:layout_marginRight="16dp"
-            android:tint="#000000"
-            android:adjustViewBounds="true"
             android:scaleType="centerCrop"
-            android:padding="4dp"/>
+            android:src="@drawable/ic_share_black_24dp"
+            android:tint="#000000" />
 
         <ImageButton
+            android:id="@+id/browserBtn"
             android:layout_width="35dp"
             android:layout_height="35dp"
-            android:src="@drawable/ic_open_in_browser_black_24dp"
             android:layout_centerVertical="true"
-            android:layout_toLeftOf="@+id/shareBtn"
-            android:layout_toStartOf="@+id/shareBtn"
-            android:id="@+id/browserBtn"
             android:layout_marginEnd="16dp"
             android:layout_marginRight="16dp"
-            android:elevation="5dp"
+            android:layout_toLeftOf="@+id/shareBtn"
-            android:background="@android:color/transparent"
+            android:layout_toStartOf="@+id/shareBtn"
-            android:tint="#000000"
             android:adjustViewBounds="true"
+            android:background="@android:color/transparent"
+            android:elevation="5dp"
+            android:padding="4dp"
             android:scaleType="centerCrop"
-            android:padding="4dp"/>
+            android:src="@drawable/ic_open_in_browser_black_24dp"
+            android:tint="#000000" />
     </RelativeLayout>
 
 

build.gradle

@@ -7,7 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-alpha2'
+        classpath 'com.android.tools.build:gradle:3.0.0-alpha3'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong