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社区首页 >问答首页 >Android Camera2 API -简历权限不足

问Android Camera2 API -简历权限不足
EN

Stack Overflow用户
提问于 2015-12-10 18:09:25
回答 2查看 1.7K关注 0票数 4

我正在使用Camera2应用程序接口开发应用程序。我的问题看起来是这样的:当我在摄像头片段工作时按下设备的休眠按钮，然后唤醒设备，应用程序就会重新启动

代码语言：javascript
复制
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime: FATAL EXCEPTION: main
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime: Process: com.snapsportz.nexus5camera.app, PID: 5081
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime: java.lang.RuntimeException: Unable to pause activity {com.snapsportz.nexus5camera.app/com.snapsportz.handheldcamera.app.CameraActivity}: java.lang.SecurityException: Lacking privileges to access camera service
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3381)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3340)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4047)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.-wrap15(ActivityThread.java)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1350)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:102)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:148)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5417)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:  Caused by: java.lang.SecurityException: Lacking privileges to access camera service
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.hardware.camera2.utils.CameraBinderDecorator.throwOnError(CameraBinderDecorator.java:108)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.hardware.camera2.utils.CameraBinderDecorator$CameraBinderDecoratorListener.onAfterInvocation(CameraBinderDecorator.java:73)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.hardware.camera2.utils.Decorator.invoke(Decorator.java:81)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at java.lang.reflect.Proxy.invoke(Proxy.java:393)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at $Proxy1.cancelRequest(Unknown Source)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.hardware.camera2.impl.CameraDeviceImpl.stopRepeating(CameraDeviceImpl.java:899)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.hardware.camera2.impl.CameraCaptureSessionImpl.close(CameraCaptureSessionImpl.java:373)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.snapsportz.handheldcamera.app.Camera2BasicFragment.closeCamera(Camera2BasicFragment.java:899)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.snapsportz.handheldcamera.app.Camera2BasicFragment.onPause(Camera2BasicFragment.java:771)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.Fragment.performPause(Fragment.java:2379)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1019)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1130)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.FragmentManagerImpl.dispatchPause(FragmentManager.java:1967)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.FragmentController.dispatchPause(FragmentController.java:185)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.Activity.performPause(Activity.java:6346)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1311)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3367)
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3340) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4047) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.-wrap15(ActivityThread.java) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1350) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:102) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:148) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5417) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
12-10 10:59:10.423 5081-5081/com.snapsportz.nexus5camera.app E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

我相信这并不是在清单文件中缺少摄像头权限，因为它包含在清单文件中，并且应用程序运行正常，除非我尝试唤醒它。

如果有任何提示我会很高兴的。

android
android-permissions
camera2
EN

回答 2

Stack Overflow用户

发布于 2016-05-25 23:11:18

如果你使用的是Google样例，那么issue #42似乎可以描述这个问题。解决方案是检查您在Fragment中对onResume方法的使用，并在onResume()中调用openCamera()之前调用closeCamera()。似乎解决了我测试Camera2Basic时的问题。

票数 2
EN

Stack Overflow用户

发布于 2016-10-22 05:26:10

通常，这是因为你没有停止摄像设备。我在onPause/onResume活动覆盖方法中解决了这个问题：

代码语言：javascript
复制
@Override
protected void onResume() {
    super.onResume();
    Log.e(TAG, "onResume");
    ...
    openCamera();
    ...
}
@Override
protected void onPause() {
    Log.e(TAG, "onPause");
    closeCamera();
    super.onPause();
}

这对我很有效。

致以问候。-

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/34198994

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