所以我已经阅读了Camera API,但却找不到任何相关信息.我正在使用相机来抓取相框并且它完美地工作,直到我尝试释放相机.我在一个调用序列中复制了错误:
camera = Camera.open();
camera.setPreviewDisplay(getHolder());
Parameters params = camera.getParameters();
List<Size> ls = params.getSupportedPreviewSizes();
Size size = ls.get(1);
this.width = size.width;
this.height = size.height;
params.setPreviewSize(size.width, size.height);
camera.setParameters(params);
camera.setDisplayOrientation(90);
camera.setPreviewCallback(this);
camera.startPreview();
camera.stopPreview();
camera.release();
我得到的错误是
03-22 13:31:42.592: E/AndroidRuntime(14152): java.lang.RuntimeException: Method called after release()
03-22 13:31:42.592: E/AndroidRuntime(14152): at android.hardware.Camera.setHasPreviewCallback(Native Method)
03-22 13:31:42.592: E/AndroidRuntime(14152): at android.hardware.Camera.access$600(Camera.java:114)
03-22 13:31:42.592: E/AndroidRuntime(14152): at android.hardware.Camera$EventHandler.handleMessage(Camera.java:545)
03-22 13:31:42.592: E/AndroidRuntime(14152): at android.os.Handler.dispatchMessage(Handler.java:99)
03-22 13:31:42.592: E/AndroidRuntime(14152): at android.os.Looper.loop(Looper.java:130)
03-22 13:31:42.592: E/AndroidRuntime(14152): at android.app.ActivityThread.main(ActivityThread.java:3684)
03-22 13:31:42.592: E/AndroidRuntime(14152): at java.lang.reflect.Method.invokeNative(Native Method)
03-22 13:31:42.592: …