allow playing videos

app/src/main/java/com/simplemobiletools/gallery/ViewPagerFragment.java

@@ -1,18 +1,33 @@
 package com.simplemobiletools.gallery;
 
+import android.media.AudioManager;
+import android.media.MediaPlayer;
+import android.net.Uri;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
+import android.util.Log;
 import android.view.LayoutInflater;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.ImageView;
 
 import com.davemorrissey.labs.subscaleview.ImageSource;
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView;
 import com.simplemobiletools.gallery.activities.ViewPagerActivity;
 
-public class ViewPagerFragment extends Fragment implements View.OnClickListener {
+import java.io.IOException;
+
+public class ViewPagerFragment extends Fragment
+        implements View.OnClickListener, SurfaceHolder.Callback, MediaPlayer.OnCompletionListener, MediaPlayer.OnVideoSizeChangedListener {
+    private static final String TAG = ViewPagerFragment.class.getSimpleName();
     private static final String MEDIUM = "medium";
     private Media medium;
+    private static SurfaceHolder surfaceHolder;
+    private static ImageView playOutline;
+    private static boolean isPlaying;
+    private static MediaPlayer mediaPlayer;
 
     public void setMedium(Media medium) {
         this.medium = medium;
@@ -20,23 +35,49 @@ public class ViewPagerFragment extends Fragment implements View.OnClickListener
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        final View view = inflater.inflate(R.layout.pager_item, container, false);
+        View view;
 
         if (medium == null && savedInstanceState != null) {
             medium = (Media) savedInstanceState.getSerializable(MEDIUM);
         }
 
         if (medium != null) {
-            final SubsamplingScaleImageView imageView = (SubsamplingScaleImageView) view.findViewById(R.id.photo);
+            if (medium.getIsVideo()) {
+                view = inflater.inflate(R.layout.pager_video_item, container, false);
+                setupPlayer(view);
+            } else {
+                view = inflater.inflate(R.layout.pager_photo_item, container, false);
+                final SubsamplingScaleImageView imageView = (SubsamplingScaleImageView) view.findViewById(R.id.photo_view);
                 imageView.setOrientation(SubsamplingScaleImageView.ORIENTATION_USE_EXIF);
                 imageView.setImage(ImageSource.uri(medium.getPath()));
                 imageView.setMaxScale(5f);
-            imageView.setOnClickListener(this);
+            }
+        } else {
+            view = inflater.inflate(R.layout.pager_photo_item, container, false);
         }
 
+        view.setOnClickListener(this);
+
         return view;
     }
 
+    private void setupPlayer(View view) {
+        if (getActivity() == null)
+            return;
+
+        playOutline = (ImageView) view.findViewById(R.id.video_play_outline);
+        playOutline.setOnClickListener(this);
+
+        final SurfaceView surfaceView = (SurfaceView) view.findViewById(R.id.video_surface);
+        surfaceView.setOnClickListener(this);
+        surfaceHolder = surfaceView.getHolder();
+        surfaceHolder.addCallback(this);
+    }
+
+    public void itemDragged() {
+        pauseVideo();
+    }
+
     @Override
     public void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
@@ -45,6 +86,95 @@ public class ViewPagerFragment extends Fragment implements View.OnClickListener
 
     @Override
     public void onClick(View v) {
+        switch (v.getId()) {
+            case R.id.video_play_outline:
+                togglePlayPause();
+                break;
+            default:
                 ((ViewPagerActivity) getActivity()).photoClicked();
         }
     }
+
+    private void pauseVideo() {
+        if (isPlaying) {
+            togglePlayPause();
+        }
+    }
+
+    private void togglePlayPause() {
+        if (getActivity() == null)
+            return;
+
+        if (mediaPlayer == null)
+            initMediaPlayer();
+
+        isPlaying = !isPlaying;
+        if (isPlaying) {
+            mediaPlayer.start();
+            playOutline.setImageDrawable(null);
+        } else {
+            mediaPlayer.pause();
+            playOutline.setImageDrawable(getResources().getDrawable(R.mipmap.play_outline_big));
+        }
+    }
+
+    @Override
+    public void surfaceCreated(SurfaceHolder holder) {
+        initMediaPlayer();
+    }
+
+    private void initMediaPlayer() {
+        try {
+            mediaPlayer = new MediaPlayer();
+            mediaPlayer.setDataSource(getContext(), Uri.parse(medium.getPath()));
+            mediaPlayer.setDisplay(surfaceHolder);
+            mediaPlayer.setOnCompletionListener(this);
+            mediaPlayer.setOnVideoSizeChangedListener(this);
+            mediaPlayer.prepare();
+            mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
+            addPreviewImage();
+        } catch (IOException e) {
+            Log.e(TAG, "init media player " + e.getMessage());
+        }
+    }
+
+    private void addPreviewImage() {
+        mediaPlayer.start();
+        mediaPlayer.pause();
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        releaseMediaPlayer();
+    }
+
+    private void releaseMediaPlayer() {
+        pauseVideo();
+
+        if (mediaPlayer != null) {
+            mediaPlayer.release();
+            mediaPlayer = null;
+        }
+    }
+
+    @Override
+    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
+
+    }
+
+    @Override
+    public void surfaceDestroyed(SurfaceHolder holder) {
+
+    }
+
+    @Override
+    public void onCompletion(MediaPlayer mp) {
+        pauseVideo();
+    }
+
+    @Override
+    public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
+        surfaceHolder.setFixedSize(width, height);
+    }
+}

app/src/main/java/com/simplemobiletools/gallery/activities/MediaActivity.java

@@ -146,7 +146,7 @@ public class MediaActivity extends AppCompatActivity
                     if (curPath.matches(pattern) && !toBeDeleted.contains(curPath)) {
                         final File file = new File(curPath);
                         if (file.exists()) {
-                            myMedia.add(new Media(cursor.getString(pathIndex), (i == 1)));
+                            myMedia.add(new Media(curPath, (i == 1)));
                         } else {
                             invalidFiles.add(file.getAbsolutePath());
                         }

app/src/main/java/com/simplemobiletools/gallery/activities/ViewPagerActivity.java

@@ -248,7 +248,7 @@ public class ViewPagerActivity extends AppCompatActivity
     }
 
     private List<Media> getMedia() {
-        final List<Media> media = new ArrayList<>();
+        final List<Media> myMedia = new ArrayList<>();
         int j = 0;
         for (int i = 0; i < 2; i++) {
             Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
@@ -267,7 +267,7 @@ public class ViewPagerActivity extends AppCompatActivity
                 do {
                     final String curPath = cursor.getString(pathIndex);
                     if (curPath.matches(pattern) && !curPath.equals(toBeDeleted) && !curPath.equals(beingDeleted)) {
-                        media.add(new Media(curPath, j == 1));
+                        myMedia.add(new Media(curPath, i == 1));
 
                         if (curPath.equals(path)) {
                             pos = j;
@@ -279,7 +279,7 @@ public class ViewPagerActivity extends AppCompatActivity
                 cursor.close();
             }
         }
-        return media;
+        return myMedia;
     }
 
     public void photoClicked() {
@@ -355,7 +355,10 @@ public class ViewPagerActivity extends AppCompatActivity
 
     @Override
     public void onPageScrollStateChanged(int state) {
-
+        if (state == ViewPager.SCROLL_STATE_DRAGGING) {
+            final MyPagerAdapter adapter = (MyPagerAdapter) pager.getAdapter();
+            adapter.itemDragged();
+        }
     }
 
     @Override

app/src/main/java/com/simplemobiletools/gallery/adapters/MyPagerAdapter.java

@@ -11,6 +11,7 @@ import java.util.List;
 
 public class MyPagerAdapter extends FragmentStatePagerAdapter {
     private List<Media> media;
+    private ViewPagerFragment fragment;
 
     public MyPagerAdapter(FragmentManager fm, List<Media> media) {
         super(fm);
@@ -24,11 +25,15 @@ public class MyPagerAdapter extends FragmentStatePagerAdapter {
 
     @Override
     public Fragment getItem(int position) {
-        final ViewPagerFragment fragment = new ViewPagerFragment();
+        fragment = new ViewPagerFragment();
         fragment.setMedium(media.get(position));
         return fragment;
     }
 
+    public void itemDragged() {
+        fragment.itemDragged();
+    }
+
     public void updateItems(List<Media> newPaths) {
         media.clear();
         media.addAll(newPaths);

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

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-    android:id="@+id/photo"
+    android:id="@+id/photo_view"
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"/>

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

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout android:id="@+id/video_holder"
+                xmlns:android="http://schemas.android.com/apk/res/android"
+                android:layout_width="wrap_content"
+                android:layout_height="100dp">
+
+    <SurfaceView
+        android:id="@+id/video_surface"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerInParent="true"
+        android:background="@android:color/transparent"/>
+
+    <ImageView
+        android:id="@+id/video_play_outline"
+        android:layout_width="@dimen/play_outline_size_big"
+        android:layout_height="@dimen/play_outline_size_big"
+        android:layout_centerInParent="true"
+        android:background="@android:color/transparent"
+        android:src="@mipmap/play_outline_big"/>
+
+</RelativeLayout>

app/src/main/res/values/dimens.xml

@@ -3,5 +3,6 @@
     <dimen name="dir_tmb_size">150dp</dimen>
     <dimen name="medium_tmb_size">100dp</dimen>
     <dimen name="play_outline_size">40dp</dimen>
+    <dimen name="play_outline_size_big">160dp</dimen>
     <dimen name="undo_padding">8dp</dimen>
 </resources>