调用texture,onSurfaceTextureDestroyed,重新打开相机
时间: 2024-02-25 22:56:10 浏览: 19
哦,我了解了您的问题。调用texture,onSurfaceTextureDestroyed,重新打开相机的过程通常如下:
1. 在SurfaceTexture上创建TextureView或者SurfaceView。
2. 在TextureView或者SurfaceView上设置SurfaceTextureListener,确保在SurfaceTexture销毁之前调用onSurfaceTextureDestroyed方法。
3. 在onSurfaceTextureDestroyed方法中释放相机资源并关闭相机。
4. 在重新打开相机前,确保SurfaceTexture已经被销毁。
5. 打开相机并重新设置TextureView或者SurfaceView的SurfaceTexture并启动预览。
下面是一个简单的示例代码:
```java
public class MainActivity extends AppCompatActivity implements TextureView.SurfaceTextureListener {
private Camera mCamera;
private TextureView mTextureView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTextureView = findViewById(R.id.texture_view);
mTextureView.setSurfaceTextureListener(this);
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
mCamera = Camera.open();
try {
mCamera.setPreviewTexture(surface);
mCamera.startPreview();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
// Ignored, Camera does all the work for us
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
mCamera.stopPreview();
mCamera.release();
return true;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
// Invoked every time there's a new Camera preview frame
}
}
```
在这个示例中,当SurfaceTexture被销毁时,相机资源将被释放并关闭。在重新启动相机之前,需要确保SurfaceTexture已经被销毁。然后,打开相机并将SurfaceTexture设置为预览,最后启动预览。