저는 약 일주일 동안 앱에서 카메라 섹션을 얻으려고 노력했으며, 마지막으로 버그를 수정 한 후 새 섹션을 만들었습니다.활동이 재개 될 때 카메라 미리보기 화면이 검은 색이됩니다.
활동을 다시 시작하면 미리보기가 작동하지 않으며 녹음 기능도 작동하지 않습니다. Logcat을보고 내 Camera
개체가 null과 같음을 알았고 다시 만들 수 없습니다.
내에서 카메라 인스턴스 방법은
private Camera getCameraInstance() {
Camera c = null;
try {
//c = Camera.open(); // attempt to get a Camera instance
c = this.open(); // attempt to get a Camera instance
} catch (Exception e) {
// Camera is not available (in use or does not exist)
}
Log.i("TEST getCameraInstance", "" + c);
return c; // returns null if camera is unavailable
}
내에서 이력서에
protected void onPause() {
super.onPause();
try {
// release the camera immediately on pause event
// releaseCamera();
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
mCamera.release();
mCamera = null;
} catch (Exception e) {
e.printStackTrace();
}
}
내 일시 정지 받기
mCamera = getCameraInstance();
// Create preview view and set it as the content of our activity.
mPreview = new CameraPreview(this, mCamera);
preview = (FrameLayout) findViewById(R.id.previewer);
preview.addView(mPreview);
만들기
protected void onResume() {
super.onResume();
try {
mCamera = Camera.open();
mCamera = getCameraInstance();
Log.i("TEST onresume", "onResume Runing");
Log.i("TEST onresume", "camera " + mCamera);
mCamera.setPreviewCallback(null);
Log.i("TEST onresume", "camera " + mCamera);
//mCamera = getCameraInstance();
Log.i("TEST onresume", "camera " + mCamera);
// mCamera.setPreviewCallback(null);
mPreview = new CameraPreview(MainRecordScreen.this, mCamera);// set preview
Log.i("TEST onresume", "camera " + mCamera);
preview.addView(mPreview);
Log.i("TEST onresume", "camera " + mCamera);
mCamera.startPreview();
} catch (Exception e) {
Log.d(TAG, "Error starting camera preview: " + e.getMessage());
}
Log.i("TEST onresume", "camera " + mCamera);
}
내 로그 캣이 도움이 경우 getCameraInstance()
방법에서 널 (null)
06-19 06:38:40.223: E/AndroidRuntime(16702): FATAL EXCEPTION: main
06-19 06:38:40.223: E/AndroidRuntime(16702): java.lang.NullPointerException
06-19 06:38:40.223: E/AndroidRuntime(16702): at com.plcd.test.MainRecordScreen.prepareVideoRecorder(MainRecordScreen.java:198)
06-19 06:38:40.223: E/AndroidRuntime(16702): at com.plcd.test.MainRecordScreen.access$7(MainRecordScreen.java:193)
06-19 06:38:40.223: E/AndroidRuntime(16702): at com.plcd.test.MainRecordScreen$3.onClick(MainRecordScreen.java:115)
06-19 06:38:40.223: E/AndroidRuntime(16702): at android.view.View.performClick(View.java:3511)
06-19 06:38:40.223: E/AndroidRuntime(16702): at android.view.View$PerformClick.run(View.java:14105)
06-19 06:38:40.223: E/AndroidRuntime(16702): at android.os.Handler.handleCallback(Handler.java:605)
06-19 06:38:40.223: E/AndroidRuntime(16702): at android.os.Handler.dispatchMessage(Handler.java:92)
06-19 06:38:40.223: E/AndroidRuntime(16702): at android.os.Looper.loop(Looper.java:137)
06-19 06:38:40.223: E/AndroidRuntime(16702): at android.app.ActivityThread.main(ActivityThread.java:4424)
06-19 06:38:40.223: E/AndroidRuntime(16702): at java.lang.reflect.Method.invokeNative(Native Method)
06-19 06:38:40.223: E/AndroidRuntime(16702): at java.lang.reflect.Method.invoke(Method.java:511)
06-19 06:38:40.223: E/AndroidRuntime(16702): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
06-19 06:38:40.223: E/AndroidRuntime(16702): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
06-19 06:38:40.223: E/AndroidRuntime(16702): at dalvik.system.NativeStart.main(Native Method)
mCamera
돌아갑니다. 당신의 onResume()
에서
'getCameraInstance();를 제거해 주셔서 감사합니다. – RedChris