PreviewSeekBar

A SeekBar suited for showing a preview of something. As seen in Google Play Movies.

Google Play Movies

PreviewSeekBar's sample

Build

compile com.github.rubensousa:previewseekbar:0.2

How to use

####Add the following XML:

<com.github.rubensousa.previewseekbar.PreviewSeekBarLayout
      android:id="@+id/previewSeekBarLayout"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:orientation="vertical">

      <FrameLayout
          android:id="@+id/previewFrameLayout"
          android:layout_width="@dimen/video_preview_width"
          android:layout_height="@dimen/video_preview_height">

          <View
              android:id="@+id/videoView"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:layout_gravity="start"
              android:background="@color/colorPrimary" />

      </FrameLayout>

      <com.github.rubensousa.previewseekbar.PreviewSeekBar
          android:id="@+id/previewSeekBar"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_below="@id/previewFrameLayout"
          android:layout_marginTop="25dp"
          android:max="800" />
          
</com.github.rubensousa.previewseekbar.PreviewSeekBarLayout>

#####You need to add at least one PreviewSeekBar and a FrameLayout inside PreviewSeekBarLayout, else an exception will be thrown. PreviewSeekBarLayout extends from RelativeLayout so you can add other views or layouts there.

Pass a standard OnSeekBarChangeListener to the seekBar:

// setOnSeekBarChangeListener was overridden to do the same as below
seekBar.addOnSeekBarChangeListener(this);

Implement your own preview logic in:

@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
    // I can't help anymore
}

How to use with ExoPlayer

To be written

Sample

The sample uses some code adapted from the ExoPlayer official demo: https://github.com/google/ExoPlayer

A few improvements would be:

• Adding a stream with lower bitrate to load and display the images faster

• Using some kind of special stream just for the thumbnails. Maybe this is how the Google Play team did it, I don't know. They load the thumbnails a lot faster than this sample.

Any ideas for improving this would be welcomed!

License

Copyright 2016 The Android Open Source Project
Copyright 2017 Rúben Sousa

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.