textureview根据图片分辩率设置尺寸
时间: 2023-07-04 18:10:38 浏览: 126
可以通过以下步骤来根据图片分辨率设置TextureView的尺寸:
1. 获取图片的分辨率
可以使用BitmapFactory类的Options参数来获取图片的分辨率,具体代码如下:
```
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filePath, options);
int imageWidth = options.outWidth;
int imageHeight = options.outHeight;
```
2. 获取TextureView的父布局
可以使用TextureView的getParent()方法来获取其父布局,具体代码如下:
```
ViewGroup parent = (ViewGroup) textureView.getParent();
```
3. 根据图片分辨率计算TextureView的尺寸
根据图片的分辨率和父布局的尺寸,可以计算出TextureView的尺寸,具体代码如下:
```
float widthRatio = (float) imageWidth / (float) parent.getWidth();
float heightRatio = (float) imageHeight / (float) parent.getHeight();
float maxRatio = Math.max(widthRatio, heightRatio);
int viewWidth = Math.round((float) imageWidth / maxRatio);
int viewHeight = Math.round((float) imageHeight / maxRatio);
```
4. 设置TextureView的尺寸
最后,可以使用ViewGroup.LayoutParams类来设置TextureView的尺寸,具体代码如下:
```
ViewGroup.LayoutParams layoutParams = textureView.getLayoutParams();
layoutParams.width = viewWidth;
layoutParams.height = viewHeight;
textureView.setLayoutParams(layoutParams);
```
通过以上步骤,就可以根据图片分辨率设置TextureView的尺寸了。
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