diff --git a/PLDroidPlayerDemo/app/build.gradle b/PLDroidPlayerDemo/app/build.gradle
index c976b3f..befb44b 100644
--- a/PLDroidPlayerDemo/app/build.gradle
+++ b/PLDroidPlayerDemo/app/build.gradle
@@ -8,8 +8,8 @@ android {
         applicationId "com.pili.pldroid.playerdemo"
         minSdkVersion 9
         targetSdkVersion 22
-        versionCode 3
-        versionName "1.3.2"
+        versionCode 4
+        versionName "1.4.0"
     }
     buildTypes {
         release {
@@ -20,8 +20,8 @@ android {
 }
 
 dependencies {
+    compile files('libs/pldroid-player-1.4.0.jar')
     compile 'com.android.support:appcompat-v7:22+'
-    compile files('libs/pldroid-player-1.3.2.jar')
     compile 'com.qiniu:happy-dns:0.2.+'
     compile 'com.qiniu.pili:pili-android-qos:0.8.+'
 }
diff --git a/PLDroidPlayerDemo/app/libs/pldroid-player-1.3.2.jar b/PLDroidPlayerDemo/app/libs/pldroid-player-1.3.2.jar
deleted file mode 100644
index c696ac3..0000000
Binary files a/PLDroidPlayerDemo/app/libs/pldroid-player-1.3.2.jar and /dev/null differ
diff --git a/PLDroidPlayerDemo/app/libs/pldroid-player-1.4.0.jar b/PLDroidPlayerDemo/app/libs/pldroid-player-1.4.0.jar
new file mode 100644
index 0000000..e913f1c
Binary files /dev/null and b/PLDroidPlayerDemo/app/libs/pldroid-player-1.4.0.jar differ
diff --git a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/MainActivity.java b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/MainActivity.java
index 692e735..124c52e 100644
--- a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/MainActivity.java
+++ b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/MainActivity.java
@@ -2,6 +2,7 @@
 
 import android.app.Activity;
 import android.content.Intent;
+import android.os.Build;
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
 import android.view.View;
@@ -47,6 +48,9 @@ protected void onCreate(Bundle savedInstanceState) {
             e.printStackTrace();
         }
 
+        TextView mVersionInfoTextView = (TextView) findViewById(R.id.version_info);
+        mVersionInfoTextView.setText("Version: " + BuildConfig.VERSION_NAME);
+
         mEditText = (EditText)findViewById(R.id.VideoPathEdit);
         mEditText.setText(DEFAULT_TEST_URL);
 
diff --git a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLAudioPlayerActivity.java b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLAudioPlayerActivity.java
index 5f213c6..4ad5f80 100644
--- a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLAudioPlayerActivity.java
+++ b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLAudioPlayerActivity.java
@@ -119,9 +119,11 @@ public void onClickStop(View v) {
     }
 
     public void release() {
-        mMediaPlayer.stop();
-        mMediaPlayer.release();
-        mMediaPlayer = null;
+        if (mMediaPlayer != null) {
+            mMediaPlayer.stop();
+            mMediaPlayer.release();
+            mMediaPlayer = null;
+        }
     }
 
     private void prepare() {
diff --git a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLMediaPlayerActivity.java b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLMediaPlayerActivity.java
index 88a2352..9062e5b 100644
--- a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLMediaPlayerActivity.java
+++ b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLMediaPlayerActivity.java
@@ -26,7 +26,7 @@
 /**
  *  This demo shows how to use PLMediaPlayer API playing video stream
  */
-public class PLMediaPlayerActivity extends AppCompatActivity {
+public class PLMediaPlayerActivity extends VideoPlayerBaseActivity {
 
     private static final String TAG = PLMediaPlayerActivity.class.getSimpleName();
 
@@ -48,7 +48,6 @@ public class PLMediaPlayerActivity extends AppCompatActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
-        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_media_player);
         mLoadingView = findViewById(R.id.LoadingView);
diff --git a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLVideoTextureActivity.java b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLVideoTextureActivity.java
index 1e4b8ea..c2d24ed 100644
--- a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLVideoTextureActivity.java
+++ b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLVideoTextureActivity.java
@@ -4,9 +4,8 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
-import android.support.v7.app.AppCompatActivity;
 import android.view.View;
-import android.view.WindowManager;
+import android.widget.ImageView;
 import android.widget.Toast;
 
 import com.pili.pldroid.player.AVOptions;
@@ -18,7 +17,7 @@
 /**
  *  This is a demo activity of PLVideoTextureView
  */
-public class PLVideoTextureActivity extends AppCompatActivity {
+public class PLVideoTextureActivity extends VideoPlayerBaseActivity {
 
     private static final int MESSAGE_ID_RECONNECTING = 0x01;
 
@@ -29,18 +28,19 @@ public class PLVideoTextureActivity extends AppCompatActivity {
     private int mRotation = 0;
     private int mDisplayAspectRatio = PLVideoTextureView.ASPECT_RATIO_FIT_PARENT; //default
     private View mLoadingView;
+    private View mCoverView = null;
     private boolean mIsActivityPaused = true;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
         setContentView(R.layout.activity_pl_video_texture);
         mVideoView = (PLVideoTextureView) findViewById(R.id.VideoView);
-
         mLoadingView = findViewById(R.id.LoadingView);
         mVideoView.setBufferingIndicator(mLoadingView);
         mLoadingView.setVisibility(View.VISIBLE);
+        mCoverView = (ImageView) findViewById(R.id.CoverView);
+        mVideoView.setCoverView(mCoverView);
 
         mVideoPath = getIntent().getStringExtra("videoPath");
 
diff --git a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLVideoViewActivity.java b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLVideoViewActivity.java
index e544507..89c7ec0 100644
--- a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLVideoViewActivity.java
+++ b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/PLVideoViewActivity.java
@@ -4,10 +4,9 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
-import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.View;
-import android.view.WindowManager;
+import android.widget.ImageView;
 import android.widget.Toast;
 
 import com.pili.pldroid.player.AVOptions;
@@ -17,9 +16,9 @@
 import com.pili.pldroid.playerdemo.widget.MediaController;
 
 /**
- *  This is a demo activity of PLVideoView
+ * This is a demo activity of PLVideoView
  */
-public class PLVideoViewActivity extends AppCompatActivity {
+public class PLVideoViewActivity extends VideoPlayerBaseActivity {
 
     private static final String TAG = PLVideoViewActivity.class.getSimpleName();
 
@@ -32,14 +31,16 @@ public class PLVideoViewActivity extends AppCompatActivity {
     private int mDisplayAspectRatio = PLVideoView.ASPECT_RATIO_FIT_PARENT;
     private boolean mIsActivityPaused = true;
     private View mLoadingView;
+    private View mCoverView = null;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
-        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_pl_video_view);
         mVideoView = (PLVideoView) findViewById(R.id.VideoView);
 
+        mCoverView = (ImageView) findViewById(R.id.CoverView);
+        mVideoView.setCoverView(mCoverView);
         mLoadingView = findViewById(R.id.LoadingView);
         mVideoView.setBufferingIndicator(mLoadingView);
         mLoadingView.setVisibility(View.VISIBLE);
@@ -78,7 +79,7 @@ protected void onCreate(Bundle savedInstanceState) {
         mVideoView.setVideoPath(mVideoPath);
 
         // You can also use a custom `MediaController` widget
-        mMediaController = new MediaController(this, false, isLiveStreaming==1);
+        mMediaController = new MediaController(this, false, isLiveStreaming == 1);
         mVideoView.setMediaController(mMediaController);
     }
 
@@ -214,7 +215,7 @@ public void onBufferingUpdate(PLMediaPlayer plMediaPlayer, int precent) {
         @Override
         public void onSeekComplete(PLMediaPlayer plMediaPlayer) {
             Log.d(TAG, "onSeekComplete !");
-        };
+        }
     };
 
     private PLMediaPlayer.OnVideoSizeChangedListener mOnVideoSizeChangedListener = new PLMediaPlayer.OnVideoSizeChangedListener() {
diff --git a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/VideoPlayerBaseActivity.java b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/VideoPlayerBaseActivity.java
new file mode 100644
index 0000000..c68afc2
--- /dev/null
+++ b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/VideoPlayerBaseActivity.java
@@ -0,0 +1,29 @@
+package com.pili.pldroid.playerdemo;
+
+import android.os.Build;
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
+import android.view.View;
+import android.view.WindowManager;
+
+/**
+ * Created by kongweile on 29/10/2016.
+ * Auto hide and show navigation bar and status bar for API >= 19.
+ * Keep screen on.
+ */
+
+public class VideoPlayerBaseActivity extends AppCompatActivity {
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+            View decorView = getWindow().getDecorView();
+            decorView.setSystemUiVisibility(
+                      View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+                    | View.SYSTEM_UI_FLAG_FULLSCREEN
+                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
+        }
+        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+    }
+}
diff --git a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/VideoViewActivity.java b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/VideoViewActivity.java
index 13bcbfd..72cf7bf 100644
--- a/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/VideoViewActivity.java
+++ b/PLDroidPlayerDemo/app/src/main/java/com/pili/pldroid/playerdemo/VideoViewActivity.java
@@ -3,7 +3,6 @@
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
 import android.text.TextUtils;
 import android.util.Log;
 import android.util.Pair;
@@ -28,7 +27,7 @@
  *  This is a demo activity of com.pili.pldroid.player.widget.VideoView
  *  @deprecated Use {@link PLVideoView} instead.
  */
-public class VideoViewActivity extends AppCompatActivity implements
+public class VideoViewActivity extends VideoPlayerBaseActivity implements
         IjkMediaPlayer.OnCompletionListener,
         IjkMediaPlayer.OnInfoListener,
         IjkMediaPlayer.OnErrorListener,
@@ -58,7 +57,6 @@ public class VideoViewActivity extends AppCompatActivity implements
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
         setContentView(R.layout.activity_video_view);
 
         setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
diff --git a/PLDroidPlayerDemo/app/src/main/jniLibs/arm64-v8a/libpldroidplayer.so b/PLDroidPlayerDemo/app/src/main/jniLibs/arm64-v8a/libpldroidplayer.so
index ac4e6ad..dce04b6 100755
Binary files a/PLDroidPlayerDemo/app/src/main/jniLibs/arm64-v8a/libpldroidplayer.so and b/PLDroidPlayerDemo/app/src/main/jniLibs/arm64-v8a/libpldroidplayer.so differ
diff --git a/PLDroidPlayerDemo/app/src/main/jniLibs/armeabi-v7a/libpldroidplayer.so b/PLDroidPlayerDemo/app/src/main/jniLibs/armeabi-v7a/libpldroidplayer.so
index 229c8b9..dc581e3 100755
Binary files a/PLDroidPlayerDemo/app/src/main/jniLibs/armeabi-v7a/libpldroidplayer.so and b/PLDroidPlayerDemo/app/src/main/jniLibs/armeabi-v7a/libpldroidplayer.so differ
diff --git a/PLDroidPlayerDemo/app/src/main/jniLibs/armeabi/libpldroidplayer.so b/PLDroidPlayerDemo/app/src/main/jniLibs/armeabi/libpldroidplayer.so
index 58026b1..4834e6c 100755
Binary files a/PLDroidPlayerDemo/app/src/main/jniLibs/armeabi/libpldroidplayer.so and b/PLDroidPlayerDemo/app/src/main/jniLibs/armeabi/libpldroidplayer.so differ
diff --git a/PLDroidPlayerDemo/app/src/main/jniLibs/x86/libpldroidplayer.so b/PLDroidPlayerDemo/app/src/main/jniLibs/x86/libpldroidplayer.so
index 7a817f1..79f494d 100755
Binary files a/PLDroidPlayerDemo/app/src/main/jniLibs/x86/libpldroidplayer.so and b/PLDroidPlayerDemo/app/src/main/jniLibs/x86/libpldroidplayer.so differ
diff --git a/PLDroidPlayerDemo/app/src/main/res/drawable-hdpi/thumbnail.png b/PLDroidPlayerDemo/app/src/main/res/drawable-hdpi/thumbnail.png
new file mode 100644
index 0000000..31f093b
Binary files /dev/null and b/PLDroidPlayerDemo/app/src/main/res/drawable-hdpi/thumbnail.png differ
diff --git a/PLDroidPlayerDemo/app/src/main/res/layout/activity_main.xml b/PLDroidPlayerDemo/app/src/main/res/layout/activity_main.xml
index 40ab824..dd6b595 100644
--- a/PLDroidPlayerDemo/app/src/main/res/layout/activity_main.xml
+++ b/PLDroidPlayerDemo/app/src/main/res/layout/activity_main.xml
@@ -2,13 +2,21 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:orientation="vertical" >
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/version_info"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="15dp"
+        android:textSize="20sp"
+        android:textStyle="bold" />
 
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="@string/pls_choose_activity"
         android:layout_margin="15dp"
+        android:text="@string/pls_choose_activity"
         android:textSize="20sp"
         android:textStyle="bold" />
 
@@ -16,13 +24,13 @@
         android:id="@+id/TestSpinner"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginLeft="10dp"/>
+        android:layout_marginLeft="10dp" />
 
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="@string/pls_choose_setting"
         android:layout_margin="15dp"
+        android:text="@string/pls_choose_setting"
         android:textSize="20sp"
         android:textStyle="bold" />
 
@@ -30,23 +38,23 @@
         android:id="@+id/StreamingTypeRadioGroup"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:orientation="horizontal"
         android:layout_marginLeft="15dp"
-        android:layout_marginTop="5dp" >
+        android:layout_marginTop="5dp"
+        android:orientation="horizontal">
 
         <RadioButton
             android:id="@+id/RadioLiveStreaming"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="@string/live_streaming"
-            android:checked="true" />
+            android:checked="true"
+            android:text="@string/live_streaming" />
 
         <RadioButton
             android:id="@+id/RadioPlayback"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="@string/playback"
-            android:layout_marginLeft="10dp" />
+            android:layout_marginLeft="10dp"
+            android:text="@string/playback" />
 
     </RadioGroup>
 
@@ -54,33 +62,33 @@
         android:id="@+id/DecodeTypeRadioGroup"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:orientation="horizontal"
         android:layout_marginLeft="15dp"
-        android:layout_marginTop="5dp" >
+        android:layout_marginTop="5dp"
+        android:orientation="horizontal">
 
         <RadioButton
             android:id="@+id/RadioSWDecode"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="@string/sw_decode"
-            android:checked="true" />
+            android:checked="true"
+            android:text="@string/sw_decode" />
 
         <RadioButton
             android:id="@+id/RadioHWDecode"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="@string/hw_decode"
-            android:layout_marginLeft="10dp" />
+            android:layout_marginLeft="10dp"
+            android:text="@string/hw_decode" />
 
     </RadioGroup>
 
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="@string/pls_choose_videopath"
-        android:layout_marginTop="15dp"
         android:layout_marginLeft="15dp"
         android:layout_marginRight="15dp"
+        android:layout_marginTop="15dp"
+        android:text="@string/pls_choose_videopath"
         android:textSize="20sp"
         android:textStyle="bold" />
 
@@ -88,32 +96,32 @@
         android:id="@+id/VideoPathEdit"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:layout_margin="10dp"
         android:hint="@string/input_video_path"
-        android:singleLine="true"
-        android:textSize="18sp"
         android:padding="10sp"
-        android:layout_margin="10dp" />
+        android:singleLine="true"
+        android:textSize="18sp" />
 
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:orientation="horizontal"
-        android:layout_margin="10dp" >
+        android:layout_margin="10dp"
+        android:orientation="horizontal">
 
         <Button
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:onClick="onClickLocalFile"
             android:text="@string/btn_local_file"
-            android:textSize="12sp"
-            android:onClick="onClickLocalFile" />
+            android:textSize="12sp" />
 
         <Button
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="@string/btn_click_play"
-            android:textSize="12sp"
+            android:layout_marginLeft="10dp"
             android:onClick="onClickPlay"
-            android:layout_marginLeft="10dp" />
+            android:text="@string/btn_click_play"
+            android:textSize="12sp" />
 
     </LinearLayout>
 
diff --git a/PLDroidPlayerDemo/app/src/main/res/layout/activity_pl_video_texture.xml b/PLDroidPlayerDemo/app/src/main/res/layout/activity_pl_video_texture.xml
index ef81416..45708b2 100644
--- a/PLDroidPlayerDemo/app/src/main/res/layout/activity_pl_video_texture.xml
+++ b/PLDroidPlayerDemo/app/src/main/res/layout/activity_pl_video_texture.xml
@@ -8,7 +8,14 @@
         android:id="@+id/VideoView"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:layout_gravity="center"/>
+        android:layout_gravity="center" />
+
+    <ImageView
+        android:id="@+id/CoverView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="center"
+        android:src="@drawable/thumbnail"/>
 
     <LinearLayout
         android:id="@+id/LoadingView"
@@ -17,39 +24,41 @@
         android:layout_gravity="center"
         android:gravity="center"
         android:orientation="horizontal">
+
         <ProgressBar
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginRight="5dp"/>
+            android:layout_marginRight="5dp" />
+
         <TextView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginLeft="5dp"
             android:text="@string/buffering"
             android:textColor="@android:color/white"
-            android:textSize="20sp"/>
+            android:textSize="20sp" />
     </LinearLayout>
-    
+
     <LinearLayout
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:orientation="horizontal"
         android:layout_gravity="top|right"
-        android:layout_margin="20dp">
+        android:layout_margin="20dp"
+        android:orientation="horizontal">
 
         <ImageButton
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:src="@drawable/ic_rotate_right"
             android:layout_margin="5dp"
-            android:onClick="onClickRotate"/>
+            android:onClick="onClickRotate"
+            android:src="@drawable/ic_rotate_right" />
 
         <ImageButton
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:src="@drawable/ic_switch_screen"
             android:layout_margin="5dp"
-            android:onClick="onClickSwitchScreen"/>
+            android:onClick="onClickSwitchScreen"
+            android:src="@drawable/ic_switch_screen" />
 
     </LinearLayout>
 
diff --git a/PLDroidPlayerDemo/app/src/main/res/layout/activity_pl_video_view.xml b/PLDroidPlayerDemo/app/src/main/res/layout/activity_pl_video_view.xml
index e3c2912..a954cc9 100644
--- a/PLDroidPlayerDemo/app/src/main/res/layout/activity_pl_video_view.xml
+++ b/PLDroidPlayerDemo/app/src/main/res/layout/activity_pl_video_view.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="match_parent" >
+    android:layout_height="match_parent">
 
     <com.pili.pldroid.player.widget.PLVideoView
         android:id="@+id/VideoView"
@@ -9,39 +9,48 @@
         android:layout_height="match_parent"
         android:layout_gravity="center" />
 
+    <ImageView
+        android:id="@+id/CoverView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="center"
+        android:src="@drawable/thumbnail" />
+
     <LinearLayout
         android:id="@+id/LoadingView"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_gravity="center"
         android:gravity="center"
-        android:orientation="horizontal" >
+        android:orientation="horizontal">
+
         <ProgressBar
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginRight="5dp"/>
+            android:layout_marginRight="5dp" />
+
         <TextView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginLeft="5dp"
             android:text="@string/buffering"
             android:textColor="@android:color/white"
-            android:textSize="20sp"/>
+            android:textSize="20sp" />
     </LinearLayout>
 
     <LinearLayout
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:orientation="horizontal"
         android:layout_gravity="top|right"
-        android:layout_margin="20dp">
+        android:layout_margin="20dp"
+        android:orientation="horizontal">
 
         <ImageButton
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:src="@drawable/ic_switch_screen"
             android:layout_margin="5dp"
-            android:onClick="onClickSwitchScreen"/>
+            android:onClick="onClickSwitchScreen"
+            android:src="@drawable/ic_switch_screen" />
 
     </LinearLayout>
 
diff --git a/ReleaseNotes/release-notes-1.4.0.md b/ReleaseNotes/release-notes-1.4.0.md
new file mode 100644
index 0000000..bab6440
--- /dev/null
+++ b/ReleaseNotes/release-notes-1.4.0.md
@@ -0,0 +1,53 @@
+# PLDroidPlayer Release Notes for 1.4.0
+
+本次更新:
+
+## 版本
+
+1. 发布 pldroid-player-1.4.0.jar
+2. 更新 libpldroidplayer.so
+
+## 功能
+
+1. 新增设置封面功能
+
+```
+    /**
+     * Sets the cover view
+     * The view will be shown when the player is preparing
+     *
+     * @param coverView the cover view.
+     */
+    public void setCoverView(View coverView);
+```
+
+2. 新增获取当前播放状态接口
+
+```
+    /**
+     * Get the current play state
+     * @return play state
+     */
+    public PlayerState getPlayerState();
+
+    public enum PlayerState {
+        IDLE,
+        PREPARING,
+        PREPARED,
+        PLAYING,
+        BUFFERING,
+        PAUSED,
+        COMPLETED,
+        ERROR
+    }
+```
+
+## 优化
+
+1. 升级 ijk 版本 0.7.4
+2. 升级 ffmpeg 版本 3.2
+
+## 缺陷 
+
+1. 修复了多次打开、关闭播放器出现 ANR 的问题
+2. 修复了播放地址含有多个 domain 时解析异常的问题
diff --git a/releases/arm64-v8a/libpldroidplayer.so b/releases/arm64-v8a/libpldroidplayer.so
index ac4e6ad..dce04b6 100755
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diff --git a/releases/armeabi-v7a/libpldroidplayer.so b/releases/armeabi-v7a/libpldroidplayer.so
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diff --git a/releases/pldroid-player-1.3.2.jar b/releases/pldroid-player-1.3.2.jar
deleted file mode 100644
index c696ac3..0000000
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diff --git a/releases/pldroid-player-1.4.0.jar b/releases/pldroid-player-1.4.0.jar
new file mode 100644
index 0000000..cef7d05
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diff --git a/releases/x86/libpldroidplayer.so b/releases/x86/libpldroidplayer.so
index 7a817f1..79f494d 100755
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