Android设置自定义录视频宽高比

最新推荐文章于 2021-05-29 04:51:31 发布

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#android #视频 #动态设置宽高比

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本文介绍了一种在Android应用中动态调整视频录制宽高比的方法，通过计算并设置预览视图的布局参数来匹配屏幕尺寸，确保录制视频画面的正确比例。

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安卓视频开发中。往往需要动态设置录视频宽高比。

``` java

//声明预览的宽高和屏幕宽高
private int previewWidth = 480, screenWidth = 480;

private int previewHeight = 480, screenHeight = 800;

//初始化
screenWidth = displaymetrics.widthPixels;
screenHeight = displaymetrics.heightPixels;

RelativeLayout.LayoutParams layoutParam1 = new RelativeLayout.LayoutParams(screenWidth,(int) (screenWidth*(previewWidth/(previewHeight*1f))));

layoutParam1.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);

RelativeLayout.LayoutParams layoutParam2 = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT);
layoutParam2.topMargin = screenWidth;

View view = new View(FFmpegRecorderActivity.this);
view.setFocusable(false);
view.setBackgroundColor(Color.BLACK);
view.setFocusableInTouchMode(false);

topLayout.addView(cameraView, layoutParam1);
topLayout.addView(view,layoutParam2);

topLayout.setOnTouchListener(FFmpegRecorderActivity.this);