记一次在生产环境时，安卓包在拍照后出现闪退的问题。
1、bug描述
【操作步骤】1、app端进入租区报事，填写好表单信息；2、添加图片-选择拍照-勾选已排好的照片【实际结果】出现白屏，然后应用闪退【预期结果】拍照上传成功
2、下面是错误日志
-12-19 17:56:56.465 26236-26236/? E/AndroidRuntime: FATAL EXCEPTION: mainProcess: com.crlandmixc.cpms, PID: 26236java.lang.RuntimeException: Unable to create service com.luck.picture.lib.service.ForegroundService: java.lang.SecurityException: Permission Denial: startForeground from pid=26236, uid=10216 requires android.permission.FOREGROUND_SERVICEat android.app.ActivityThread.handleCreateService(ActivityThread.java:5116)at android.app.ActivityThread.access$3000(ActivityThread.java:278)at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2565)at android.os.Handler.dispatchMessage(Handler.java:109)at android.os.Looper.loop(Looper.java:228)at android.app.ActivityThread.main(ActivityThread.java:9105)at java.lang.reflect.Method.invoke(Native Method)at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:614)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1129)Caused by: java.lang.SecurityException: Permission Denial: startForeground from pid=26236, uid=10216 requires android.permission.FOREGROUND_SERVICEat android.os.Parcel.createExceptionOrNull(Parcel.java:2390)at android.os.Parcel.createException(Parcel.java:2374)at android.os.Parcel.readException(Parcel.java:2357)at android.os.Parcel.readException(Parcel.java:2299)at android.app.IActivityManager$Stub$Proxy.setServiceForeground(IActivityManager.java:7118)at android.app.Service.startForeground(Service.java:715)at com.luck.picture.lib.service.ForegroundService.onCreate(ForegroundService.java:41)at android.app.ActivityThread.handleCreateService(ActivityThread.java:5102)at android.app.ActivityThread.access$3000(ActivityThread.java:278) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2565) at android.os.Handler.dispatchMessage(Handler.java:109) at android.os.Looper.loop(Looper.java:228) at android.app.ActivityThread.main(ActivityThread.java:9105) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:614) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1129) Caused by: android.os.RemoteException: Remote stack trace:at com.android.server.am.ActivityManagerService.enforcePermission(ActivityManagerService.java:6841)at com.android.server.am.ActiveServices.setServiceForegroundInnerLocked(ActiveServices.java:1522)at com.android.server.am.ActiveServices.setServiceForegroundLocked(ActiveServices.java:1166)at com.android.server.am.ActivityManagerService.setServiceForeground(ActivityManagerService.java:16224)at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:3260)callee: null 1508/2859
3、开发分析根因
4、参考文章
Caused by: java.lang.SecurityException: Permission Denial: startForeground from pid=12394, uid=10302 requires android.permission.FOREGROUND_SERVICE
翻译：原因：java.lang.SecurityException:权限拒绝：StartForeground from PID=12394，ULD=10302需要android.permission.foreground
Android在8.0开始限制后台服务，启动后台服务需要设置通知栏，使服务变成前台服务。同时在Android 9.0开始注册权限android.permission.FOREGROUND_SERVICE，并授权权限。
从8.0开始启动服务需要进行判断出来如下：
/*** Android 8.0及以后,启动服务的形式已经变了*/private void startService(Context context) {Intent intent = new Intent(context, MyForegroundService.class);if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {context.startForegroundService(intent);} else {context.startService(intent);}}
同时在Service的onCreate()方法里设置通知栏如下：
@Overridepublic void onCreate() {super.onCreate();if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {NotificationChannel channel = new NotificationChannel("xxx", "xxx", NotificationManager.IMPORTANCE_LOW);NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);if (manager == null)return;manager.createNotificationChannel(channel);Notification notification = new NotificationCompat.Builder(this, "xxx").setAutoCancel(true).setCategory(Notification.CATEGORY_SERVICE).setOngoing(true).setPriority(NotificationManager.IMPORTANCE_LOW).build();}}
