问题描述
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大家好
我正在通过应用程序访问相机。
一切都很好，我什至可以将照片保存到我的SD卡中，但
当我捕获图像时，应用程序似乎卡住了，而且如果我回家并再次返回该应用程序，我会遇到强制关闭错误。以下是我在logcat中遇到的错误
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): java.lang.RuntimeException: Fail to connect to camera service
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.hardware.Camera.native_setup(Native Method)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.hardware.Camera.<init>(Camera.java:118)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.hardware.Camera.open(Camera.java:91)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at org.mycamera.mycamera.surfaceCreated(mycamera.java:70)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.SurfaceView.updateWindow(SurfaceView.java:540)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.SurfaceView.dispatchDraw(SurfaceView.java:339)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.View.draw(View.java:6742)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.widget.FrameLayout.draw(FrameLayout.java:352)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewGroup.drawChild(ViewGroup.java:1648)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewGroup.drawChild(ViewGroup.java:1646)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1375)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.View.draw(View.java:6742)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.widget.FrameLayout.draw(FrameLayout.java:352)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1872)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewRoot.draw(ViewRoot.java:1422)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewRoot.performTraversals(ViewRoot.java:1167)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.view.ViewRoot.handleMessage(ViewRoot.java:1744)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.os.Handler.dispatchMessage(Handler.java:99)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.os.Looper.loop(Looper.java:144)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at android.app.ActivityThread.main(ActivityThread.java:4937)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at java.lang.reflect.Method.invokeNative(Native Method)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at java.lang.reflect.Method.invoke(Method.java:521)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-13 17:20:40.818: ERROR/AndroidRuntime(1149): at dalvik.system.NativeStart.main(Native Method)
SurfaceHolder holder;
SurfaceView surface;
Camera camera;
Boolean isPreviewRunning;
//Preview mpreview;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
isPreviewRunning = false;
surface = (SurfaceView)findViewById(R.id.surface);
holder = surface.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
Button btn = (Button)findViewById(R.id.click);
btn.setonClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
// Todo Auto-generated method stub
camera.takePicture(mShutterCallback,mPictureCallbackRaw,mPictureCallbackJpeg);
//onCreate(null);
}
});
}
@Override
public void surfaceChanged(SurfaceHolder holder,int format,int width,int height) {
/* if (isPreviewRunning) {
camera.stopPreview();
} */
Camera.Parameters parameters = camera.getParameters();
List<Size> sizes = parameters.getSupportedPreviewSizes();
Size size = sizes.get(0);
parameters.setPreviewSize(size.width,size.height);
camera.setParameters(parameters);
camera.startPreview();
isPreviewRunning=true;
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
// Todo Auto-generated method stub
camera = Camera.open();
try {
camera.setPreviewdisplay(holder);
} catch (IOException e) {
// Todo Auto-generated catch block
e.printstacktrace();
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// Todo Auto-generated method stub
camera.stopPreview();
camera.release();
camera=null;
}
protected void onRestoreInstanceState(Bundle savedInstanceState)
{
super.onRestoreInstanceState(savedInstanceState);
}
Camera.PictureCallback mPictureCallbackRaw = new Camera.PictureCallback() {
public void onPictureTaken(byte[] data,Camera c) {
Log.e(getClass().getSimpleName(),\"PICTURE CALLBACK RAW: \" + data);
camera.startPreview();
}
};
Camera.PictureCallback mPictureCallbackJpeg= new Camera.PictureCallback() {
public void onPictureTaken(byte[] data,\"PICTURE CALLBACK JPEG: data.length = \" + data);
}
};
Camera.ShutterCallback mShutterCallback = new Camera.ShutterCallback() {
public void onShutter() {
Log.e(getClass().getSimpleName(),\"SHUTTER CALLBACK\");
}
};
protected void onResume()
{
Log.e(getClass().getSimpleName(),\"onResume\");
super.onResume();
}
protected void onSaveInstanceState(Bundle outState)
{
super.onSaveInstanceState(outState);
}
protected void onStop()
{
Log.e(getClass().getSimpleName(),\"onStop\");
super.onStop();
}
解决方法
这很可能是因为您再次致电
startPreview()
mPictureCallbackJpeg
mPictureCallbackRaw