Expand card view height to height of contained exoplayer, crop only left and right sides of expoplayer

user_9996859 0
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I have an ex0player in a RecyclerView of CardViews. The height of the exoplayer needs to be changed programmatically based on the height of the video contained. This height value is passed returned from the API call in pixels. Here is the layout of the ViewHolder:

<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    app:cardCornerRadius="10dp"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">


    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/communityPlayableCl"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
       >


        <com.google.android.exoplayer2.ui.PlayerView
            android:id="@+id/toroPlayerView"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:background="@color/transparent"
            android:visibility="invisible"
            app:controller_layout_id="@layout/v_player_controls"
            app:keep_content_on_player_reset="true"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@+id/communityPlayableIv"
            app:player_layout_id="@layout/toro_exo_player_view"
            app:resize_mode="zoom"
            app:show_buffering="when_playing"
            app:shutter_background_color="@android:color/transparent"
            app:surface_type="texture_view"
            app:use_controller="false" />

        <androidx.appcompat.widget.AppCompatImageView
            android:id="@+id/communityPlayableIv"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:adjustViewBounds="true"
            android:background="@color/black"
            android:scaleType="centerCrop"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toStartOf="parent"
            tools:layout_editor_absoluteY="0dp"
            tools:src="@color/alpha_grey" />

        <androidx.appcompat.widget.AppCompatImageView
            android:id="@+id/volumeIv"
            android:layout_width="64dp"
            android:layout_height="64dp"
            android:layout_gravity="bottom|end"
            android:padding="15dp"
            android:src="@drawable/ic_volume_off"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent" />


    </androidx.constraintlayout.widget.ConstraintLayout>

</androidx.cardview.widget.CardView>

Here is how I am adjusting the height and aspect ratio:

   if (model.mediaHeight != 0 && model.mediaHeight != null ) {
            communityPlayableCl.requestLayout()
            communityPlayableCl.layoutParams.height = model.mediaHeight

        }



    val constraintSet = ConstraintSet()
    constraintSet.clone(communityPlayableCl)
    constraintSet.setDimensionRatio(itemView.id,model.mediaAspectRatio)
    constraintSet.applyTo(communityPlayableCl)

This crops the top and bottom of a 640x640 video

exoplayer2.x exoplayer android xml
2 Answers

You can get the dimensions from the video using something like this. I'd add a try/catch around Uri.parse as well, which will fail if the file cannot be parsed.

Pair<Integer, Integer> getMediaDimensions(File file, Context context) {
    if (!file.exists()) return null;
    MediaMetadataRetriever retriever = new MediaMetadataRetriever();
    retriever.setDataSource(context, Uri.parse(file.getAbsolutePath()));
    int width = Integer.valueOf(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH));
    int height = Integer.valueOf(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT));
    retriever.release();

    return new Pair<>(width, height);
}

From there, you can either manually calculate and set new height/width after calculating the ratio. Alternatively, use a ConstraintLayout as the player's container and set its layout_constraintDimensionRatio to something like H,1:1, and replace each 1 with your width/height.

If you're using Kotlin, you can follow this post to adjust accordingly, and add a reuseable extension.

user_9740450

I ended up setting the dimensions of the view manually using the passed aspect ratio

user_99968590
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