我正在使用新的camera2 API构建自定义相机.我的代码基于Google
here提供的代码示例.
我无法找到一种方法来全屏显示相机.在代码示例中,他们使用比率优化来适应所有屏幕,但它只占屏幕高度的3/4左右.
这是我的AutoFitTextureView代码：
public class AutoFitTextureView extends TextureView {
private int mRatioWidth = 0;
private int mRatioHeight = 0;
public AutoFitTextureView(Context context) {
this(context,null);
}
public AutoFitTextureView(Context context,AttributeSet attrs) {
this(context,attrs,0);
}
public AutoFitTextureView(Context context,AttributeSet attrs,int defStyle) {
super(context,defStyle);
}
/**
* Sets the aspect ratio for this view. The size of the view will be measured based on the ratio
* calculated from the parameters. Note that the actual sizes of parameters don't matter,that
* is,calling setAspectRatio(2,3) and setAspectRatio(4,6) make the same result.
*
* @param width Relative horizontal size
* @param height Relative vertical size
*/
public void setAspectRatio(int width,int height) {
if (width < 0 || height < 0) {
throw new IllegalArgumentException("Size cannot be negative.");
}
mRatioWidth = width;
mRatioHeight = height;
requestLayout();
}
@Override
protected void onMeasure(int widthMeasureSpec,int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec,heightMeasureSpec);
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = MeasureSpec.getSize(heightMeasureSpec);
if (0 == mRatioWidth || 0 == mRatioHeight) {
setMeasuredDimension(width,height);
} else {
if (width < height * mRatioWidth / mRatioHeight) {
setMeasuredDimension(width,width * mRatioHeight / mRatioWidth);
} else {
setMeasuredDimension(height * mRatioWidth / mRatioHeight,height);
}
}
}
}
非常感谢您的帮助.
解决方法
这是您的问题的解决方案.在此
line中,纵横比设置为3/4.我更改了chooseVideSize方法,为MediaRecorder选择具有高清分辨率的视频大小.
private static Size chooseVideoSize(Size[] choices) {
for (Size size : choices) {
// Note that it will pick only HD video size,you should create more robust solution depending on screen size and available video sizes
if (1920 == size.getWidth() && 1080 == size.getHeight()) {
return size;
}
}
Log.e(TAG,"Couldn't find any suitable video size");
return choices[choices.length - 1];
}
然后我更正了this method以根据视频大小纵横比选择预览尺寸,结果如下.
private static Size chooSEOptimalSize(Size[] choices,int width,int height,Size aspectRatio) { // Collect the supported resolutions that are at least as big as the preview Surface List<Size> bigEnough = new ArrayList<Size>(); int w = aspectRatio.getWidth(); int h = aspectRatio.getHeight(); double ratio = (double) h / w; for (Size option : choices) { double optionRatio = (double) option.getHeight() / option.getWidth(); if (ratio == optionRatio) { bigEnough.add(option); } } // Pick the smallest of those,assuming we found any if (bigEnough.size() > 0) { return Collections.min(bigEnough,new CompareSizesByArea()); } else { Log.e(TAG,"Couldn't find any suitable preview size"); return choices[1]; } }
我希望它会对你有所帮助！
