PlaybackControls.java

package io.github.xwz.base.views;

import android.content.Context;
import android.view.KeyEvent;
import android.view.View;
import android.widget.ImageButton;
import android.widget.MediaController;

public class PlaybackControls extends MediaController {
    private MediaPlayerControl mPlayer;
    private View mRoot;
    private ImageButton mPauseButton;


    public PlaybackControls(Context context) {
        super(context);
    }

    @Override
    public void setMediaPlayer(MediaPlayerControl player) {
        mPlayer = player;
        super.setMediaPlayer(player);
    }

    @Override
    public void setAnchorView(View view) {
        super.setAnchorView(view);
        mRoot = this.getChildAt(0);
        //mPauseButton = (ImageButton) mRoot.findViewById();
    }

    public boolean dispatchKeyEvent(KeyEvent event, int timeout) {
        int keyCode = event.getKeyCode();
        final boolean uniqueDown = event.getRepeatCount() == 0
                && event.getAction() == KeyEvent.ACTION_DOWN;
        if (keyCode == KeyEvent.KEYCODE_HEADSETHOOK
                || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE
                || keyCode == KeyEvent.KEYCODE_SPACE) {
            if (uniqueDown) {
                doPauseResume();
                show(timeout);
                if (mPauseButton != null) {
                    mPauseButton.requestFocus();
                }
            }
            return true;
        } else if (keyCode == KeyEvent.KEYCODE_MEDIA_PLAY) {
            if (uniqueDown && !mPlayer.isPlaying()) {
                mPlayer.start();
                updatePausePlay();
                show(timeout);
            }
            return true;
        } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP
                || keyCode == KeyEvent.KEYCODE_MEDIA_PAUSE) {
            if (uniqueDown && mPlayer.isPlaying()) {
                mPlayer.pause();
                updatePausePlay();
                show(timeout);
            }
            return true;
        } else if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
                || keyCode == KeyEvent.KEYCODE_VOLUME_UP
                || keyCode == KeyEvent.KEYCODE_VOLUME_MUTE
                || keyCode == KeyEvent.KEYCODE_CAMERA) {
            // don't show the controls for volume adjustment
            return super.dispatchKeyEvent(event);
        } else if (keyCode == KeyEvent.KEYCODE_BACK || keyCode == KeyEvent.KEYCODE_MENU) {
            if (uniqueDown) {
                hide();
            }
            return true;
        }

        show(timeout);
        return false;
    }

    private void updatePausePlay() {
        super.setMediaPlayer(mPlayer);
    }

    private void doPauseResume() {
        if (mPlayer.isPlaying()) {
            mPlayer.pause();
        } else {
            mPlayer.start();
        }
        updatePausePlay();
    }
}