Android VideoViewcrop_center [英] Android VideoView crop_center

问题描述

我有一个 RelativeLayout

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_gravity="center"
    android:foregroundGravity="center"
    android:gravity="center"
    android:orientation="horizontal" >

    <VideoView
        android:id="@+id/videoViewPanel"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_gravity="center" 
        android:layout_centerInParent="true"/>

</RelativeLayout>

我需要的是全屏显示裁剪的视频.如果我可以与 ImageView 进行比较，我需要将其显示为crop_center.

And what I need is to show video fullscreen cropped. If I could compare to ImageView, I need to show it as crop_center.

如何让 VideoView 不自动调整视频大小以适应中心，而是裁剪中心?

How can I make VideoView not to auto-resize video to fit center, but crop center?

推荐答案

解决方案是使用 TextureView 而不是 VideoView(SurfaceView).
TextureView 不会对内容进行任何操作以使其适合屏幕.
以下是解决方案的代码示例:

The solution is to use TextureView instead of VideoView(SurfaceView).
TextureView does not make any manipulations with the content to fit it ti the screen.
Here is the code sample for the solution:

//store the SurfaceTexture to set surface for MediaPlayer
mTextureView.setSurfaceTextureListener(new SurfaceTextureListener() {
@Override
    public void onSurfaceTextureAvailable(SurfaceTexture surface,
            int width, int height) {
        FullScreenActivity.this.mSurface = surface;

    }

……

Surface s = new Surface(mSurface);
mPlayer = mp;
mp.setSurface(s);

scaleVideo(mp);//<-- this function scales video to run cropped

....

private void scaleVideo(MediaPlayer mPlayer) {

        LayoutParams videoParams = (LayoutParams) mTextureView
                .getLayoutParams();
        DisplayMetrics dm = new DisplayMetrics();
        FullScreenActivity.this.getWindowManager().getDefaultDisplay()
                .getMetrics(dm);

        final int height = dm.heightPixels;
        final int width = dm.widthPixels;
        int videoHeight = mPlayer.getVideoHeight();
        int videoWidth = mPlayer.getVideoWidth();
        double hRatio = 1;

        hRatio = (height * 1.0 / videoHeight) / (width * 1.0 / videoWidth);
        videoParams.x = (int) (hRatio <= 1 ? 0 : Math.round((-(hRatio - 1) / 2)
                * width));
        videoParams.y = (int) (hRatio >= 1 ? 0 : Math
                .round((((-1 / hRatio) + 1) / 2) * height));
        videoParams.width = width - videoParams.x - videoParams.x;
        videoParams.height = height - videoParams.y - videoParams.y;
        Log.e(TAG, "x:" + videoParams.x + " y:" + videoParams.y);
        mTextureView.setScaleX(1.00001f);//<-- this line enables smoothing of the picture in TextureView.
        mTextureView.requestLayout();
        mTextureView.invalidate();

    }

这篇关于Android VideoViewcrop_center的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！