锁定相机时，例如错误/解锁装置

问题描述：

我用相机工作，我使用的文件中给出的相同的例子：
http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/graphics/Camera$p$pview.html

I'm working with the camera and I'm using the exact same example given in the documentation : http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/graphics/CameraPreview.html

我在运行示例上的Xoom与Android 3.1和3.2。

I running the example on a Xoom with Android 3.1 and 3.2.

我的问题是，当我锁定和解锁的Xoom，相机不回来。图像保持不变的最后一个之前，我锁定了平板电脑和红灯不回来无论是。

My problem is when I lock and unlock the Xoom, the camera doesn't come back. The image stay the same as the last one before I locked the tablet and the red light doesn't come back either.

如果有人可以帮助我，我会AP preciate。

If anyone could help me, I will appreciate.

答

通过锁定和解锁，你的意思是，当屏幕睡觉或设备电源开关为pressed把装置进入休眠状态，然后唤醒备份？

By lock and unlock, do you mean when the screen sleeps or the device power switch is pressed putting the device to sleep and then woken back up?

如果是这样，我怀疑你需要释放相机资源在你的onPause，然后在onResume再次启动preVIEW，通过表面观回调。

If so, I suspect you need to release the camera resources in your onPause and then start the preview again in onResume, via the surface view callback.

在Android 2.2和2.3的应用程序我有一个处理相机我用的模式是：

In the Android 2.2 and 2.3 apps I have that deal with camera the pattern I use is:

onCreate:
 - get reference to the camera
onResume:
- sv = (SurfaceView)this.findViewById(R.id.capture_SurfaceView);
            mHolder = sv.getHolder(); 
            mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
            mHolder.setSizeFromLayout();
            mHolder.addCallback(this); 
surfaceChanged:
- Camera.setPreviewDisplayHolder()
- Camera.startPreview()
onPause:
- Camera.stopPreview
- SurfaceHolder.removeCallback()
- Camera.release()

这很适合我整个设备入门关闭，然后再打开，或我的应用程序，否则会背景。

This works well for me across the device getting turned off and then back on, or my app otherwise going to background.

锁定相机时，例如错误/解锁装置

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