for (Camera.Size size : parameters.getSupportedPreviewSizes()) { int width = Math.min(size.width, size.height); int height = Math.max(size.width, size.height); int max=WindowsUtils.getGYS(width,height); Log.e("预览尺寸","屏宽比:"+width/max+","+height/max+"--->相机的预览尺寸为height="+height+"width="+width); }