我正在使用新的 camera2 API 构建自定义相机。我的代码是基于谷歌提供的代码示例here .
我找不到全屏预览相机的方法。在代码示例中,他们使用比例优化来适应所有屏幕,但它只占用屏幕高度的 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, attrs, 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。
最佳答案
您应该更改测量的宽度和高度以覆盖整个屏幕,而不是像下面这样适应屏幕。
来自:
if (width < height * mRatioWidth / mRatioHeight)
到
if (width > height * mRatioWidth / mRatioHeight)
它对我来说效果很好。
关于android - 使用 Android camera2 获取全屏预览,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39044494/