最近我尝试编写自定义相机代码，但有很多错误我无法解决。最严重的错误日志如下。
at android.hardware.Camera.setHasPreviewCallback(Native Method)
at android.hardware.Camera.setPreviewCallback(Camera.java:600)
java.lang.RuntimeException: Method called after release()
at android.hardware.Camera.setHasPreviewCallback(Native Method)
at android.hardware.Camera.setPreviewCallback(Camera.java:600)
at com.baitian.wenta.customcamera.CameraActivity.cameraRelease(SourceFile:210)
at com.baitian.wenta.customcamera.CameraActivity.runExceptionHandle(SourceFile:526)
at com.baitian.wenta.customcamera.CameraActivity.updateFlashStatus(SourceFile:859)
at com.baitian.wenta.customcamera.CameraActivity.onResume(SourceFile:152)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1199)
at com.qihoo360.mobilesafe.loader.b.callActivityOnResume(SourceFile:123)
at android.app.Activity.performResume(Activity.java:5280)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2629)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2667)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2140)
at android.app.ActivityThread.access$700(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4921)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
at dalvik.system.NativeStart.main(Native Method)
似乎该方法在发布后不会被调用。每次尝试释放相机时，我都会将相机设置为 null，并且没有多线程调用。 这是相机发布代码:
private void cameraRelease() {
try {
if (mCamera != null) {
mCamera.stopPreview();
mCamera.release();
mCameraExceptionLog.addLog("Camera release() After", "");
mCamera = null;
}
} catch (Throwable e) {
}
}
这是相机初始化代码
private void initCamera() {
try {
if (mCamera == null) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
mCamera = Camera.open(0);
} else {
mCamera = Camera.open();
}
mCamera.setErrorCallback(new ErrorCallback() {
@Override
public void onError(int error, Camera camera) {
isCanAutoFouce = false;
CameraActivity.this.setResult(ERROR_KEY);
CameraActivity.this.finish();
}
});
setFocusAreaDefault();
}
} catch (Throwable e) {
runExceptionHandle(e);
}
}
你能帮帮我吗，谢谢。
最佳答案
您需要在 mCamera.stopPreview() 和 mCamera.release() 之间添加 mCamera.setPreviewCallback(null)。这样您就可以取消任何即将到来的回调。
我提供了一个完整的cameraRelease方法here
关于android - 释放后调用的方法，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29518611/