qq7.0的视频动态图登录界面实现讲解解决videoview黑屏问题解决图片视频各种手机适配与缩放衔接问题

首先要解决的是播放资源文件视频的问题，很多第三方都不支持，所以这里直接用系统videoView写比较好。

本人找了相关assest读取播放的方法最后不得不放弃，支持Uri的就只有R.raw文件夹下的东西了。

代码如下:

视频的宽高适应不同手机不留缝隙问题。

继承VideoVideo重新测量即可解决，这里有人说很简单 网上还到处抄，还说这不需要什么算法，那么简单的话  你来。

String VIDEO_PATH = "android.resource://" + BuildConfig.APPLICATION_ID + "/" + R.raw.login;

loginActivityBinding.videoView.setDisplayAspectRatio(MeasureUtil.ASPECT_RATIO_PAVED_PARENT);
loginActivityBinding.videoView.setOnCorveHideListener(new SystemVideoView.OnCorveHideListener() {
    @Override
    public void requestHide() {
        loginActivityBinding.corver.setVisibility(View.GONE);
    }
});
loginActivityBinding.videoView.setVideoURI(Uri.parse(Constants.VIDEO_PATH));
loginActivityBinding.videoView.start();
loginActivityBinding.videoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
    @Override
    public void onCompletion(MediaPlayer mp) {
        loginActivityBinding.videoView.seekTo(0);
        loginActivityBinding.videoView.start();
    }
});//循环播放。
/**
 * Created by qssq on 2017/7/10 qssq666@foxmail.com
 */

public class SystemVideoView extends VideoView {


    private int videoWidth;//width
    private int videoHeight;
    private int displayAspectRatio;

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

    public SystemVideoView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public SystemVideoView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context);
//        setVisibility(INVISIBLE);
    }

    protected void init(Context context) {
        this.videoHeight = context.getResources().getDisplayMetrics().heightPixels;
        this.videoWidth = context.getResources().getDisplayMetrics().widthPixels;

        super.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(final MediaPlayer mp) {

//                setVisibility(VISIBLE);
                SystemVideoView.this.videoWidth = mp.getVideoWidth();
                SystemVideoView.this.videoHeight = mp.getVideoHeight();
                mp.setOnInfoListener(new MediaPlayer.OnInfoListener() {
                    @Override
                    public boolean onInfo(MediaPlayer mp, int what, int extra) {
                        if (what == MediaPlayer.MEDIA_INFO_VIDEO_RENDERING_START) {
                            if (onCorveHideListener != null) {
                                onCorveHideListener.requestHide();
                            }
                        }
                        if (onInfoListener != null) {
                            onInfoListener.onInfo(mp, what, extra);
                        }
                        return false;
                    }
                });
            }
        });
    }

    MediaPlayer.OnPreparedListener onPreparedListener = null;

    public interface OnCorveHideListener {
        void requestHide();
    }

    @Override
    public void setOnInfoListener(MediaPlayer.OnInfoListener onInfoListener) {
        this.onInfoListener = onInfoListener;
    }

    MediaPlayer.OnInfoListener onInfoListener;

    public void setOnCorveHideListener(OnCorveHideListener onCorveHideListener) {
        this.onCorveHideListener = onCorveHideListener;
    }

    OnCorveHideListener onCorveHideListener;

    @Override
    public void setOnPreparedListener(MediaPlayer.OnPreparedListener l) {
        this.onPreparedListener = l;
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        super.onMeasure(widthMeasureSpec, heightMeasureSpec);

       /* int width = MeasureSpec.getSize(widthMeasureSpec);
        int height = MeasureSpec.getSize(heightMeasureSpec);
        int currentHeight = Math.max(height, videoHeight);
        int currentWidth = currentHeight * 9 / 16;
        setMeasuredDimension(currentWidth, currentHeight);*/
        MeasureUtil.Size measure = MeasureUtil.measure(displayAspectRatio, widthMeasureSpec, heightMeasureSpec, videoWidth, videoHeight);
        setMeasuredDimension(measure.width, measure.height);



    }


    public void setDisplayAspectRatio(int var1) {
        displayAspectRatio = var1;
        this.requestLayout();

    }


    @Override
    public boolean isPlaying() {
        return false;
    }

    public int getDisplayAspectRatio() {
        return displayAspectRatio;
    }

    public void setCorver(int resource) {
        BitmapFactory.Options opts = new BitmapFactory.Options();
        opts.inJustDecodeBounds = true;
        BitmapFactory.decodeResource(getResources(), resource, opts);

    }
}