android - DJI SDK 4.7.1 突然崩溃，而 4.6 不会

标签 android dji-sdk

我正在尝试更新我的应用程序以使用新的 4.7.1 版本，但是当我尝试转到使用 UXSDK Widget 的 Activity 时，应用程序现在会崩溃，并且没有其他日志条目。更新 SDK 版本后，我确保我的 build.gradle、AndroidManifest.xml 和 proguard-rules.pro 在 https://github.com/dji-sdk/Mobile-SDK-Android 的示例代码的相关区域中匹配。 .

我注意到在两个版本的 SDK 中我都收到非常相似的 logcat 错误:

E/DJISDKManager: can't find DJIEventBusIndex Class in SharedLib module
E/DJISDKManager: java.lang.ClassNotFoundException: dji.event3.sharelib.DJIEventBusIndex
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:453)
    at java.lang.Class.forName(Class.java:378)
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:43)
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0)
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95)
    at java.lang.Thread.run(Thread.java:764)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "dji.event3.sharelib.DJIEventBusIndex" on path: DexPathList[[zip file "/data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/base.apk", zip file "/data/user/0/com.reportall.droneglide.fence/.cache_sdk/sdkclasses.jar"],nativeLibraryDirectories=[/data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/lib/arm64, /data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at java.lang.Class.classForName(Native Method) 
    at java.lang.Class.forName(Class.java:453) 
    at java.lang.Class.forName(Class.java:378) 
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:43) 
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0) 
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95) 
    at java.lang.Thread.run(Thread.java:764) 
E/DJISDKManager: can't find DJIEventBusIndex Class in MidWare module
E/DJISDKManager: java.lang.ClassNotFoundException: dji.event3.midware.DJIEventBusIndex
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:453)
    at java.lang.Class.forName(Class.java:378)
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:62)
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0)
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95)
    at java.lang.Thread.run(Thread.java:764)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "dji.event3.midware.DJIEventBusIndex" on path: DexPathList[[zip file "/data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/base.apk", zip file "/data/user/0/com.reportall.droneglide.fence/.cache_sdk/sdkclasses.jar"],nativeLibraryDirectories=[/data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/lib/arm64, /data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at java.lang.Class.classForName(Native Method) 
    at java.lang.Class.forName(Class.java:453) 
    at java.lang.Class.forName(Class.java:378) 
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:62) 
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0) 
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95) 
    at java.lang.Thread.run(Thread.java:764) 
E/DJISDKManager: can't find DJIEventBusIndex Class in FlyForbid module
E/DJISDKManager: java.lang.ClassNotFoundException: dji.event3.flyforbid.DJIEventBusIndex
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:453)
    at java.lang.Class.forName(Class.java:378)
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:81)
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0)
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95)
    at java.lang.Thread.run(Thread.java:764)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "dji.event3.flyforbid.DJIEventBusIndex" on path: DexPathList[[zip file "/data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/base.apk", zip file "/data/user/0/com.reportall.droneglide.fence/.cache_sdk/sdkclasses.jar"],nativeLibraryDirectories=[/data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/lib/arm64, /data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at java.lang.Class.classForName(Native Method) 
    at java.lang.Class.forName(Class.java:453) 
    at java.lang.Class.forName(Class.java:378) 
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:81) 
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0) 
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95) 
    at java.lang.Thread.run(Thread.java:764) 
E/DJISDKManager: can't find DJIEventBusIndex Class in service module
E/DJISDKManager: java.lang.ClassNotFoundException: dji.event3.service.DJIEventBusIndex
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:453)
    at java.lang.Class.forName(Class.java:378)
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:100)
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0)
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95)
    at java.lang.Thread.run(Thread.java:764)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "dji.event3.service.DJIEventBusIndex" on path: DexPathList[[zip file "/data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/base.apk", zip file "/data/user/0/com.reportall.droneglide.fence/.cache_sdk/sdkclasses.jar"],nativeLibraryDirectories=[/data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/lib/arm64, /data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at java.lang.Class.classForName(Native Method) 
    at java.lang.Class.forName(Class.java:453) 
    at java.lang.Class.forName(Class.java:378) 
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:100) 
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0) 
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95) 
    at java.lang.Thread.run(Thread.java:764) 
can't find DJIEventBusIndex Class in FrLib module
E/DJISDKManager: java.lang.ClassNotFoundException: com.dji.frlib.DJIEventBusIndex
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:453)
    at java.lang.Class.forName(Class.java:378)
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:119)
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0)
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95)
    at java.lang.Thread.run(Thread.java:764)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "com.dji.frlib.DJIEventBusIndex" on path: DexPathList[[zip file "/data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/base.apk", zip file "/data/user/0/com.reportall.droneglide.fence/.cache_sdk/sdkclasses.jar"],nativeLibraryDirectories=[/data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/lib/arm64, /data/app/com.reportall.droneglide.fence-OGmqnjtacp7079L76urIHA==/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at java.lang.Class.classForName(Native Method) 
    at java.lang.Class.forName(Class.java:453) 
    at java.lang.Class.forName(Class.java:378) 
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:119) 
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0) 
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95) 
    at java.lang.Thread.run(Thread.java:764)

在 4.7.1 中，紧邻上述 block 之前还有一条额外的前置消息:

E/DJISDKManager: Failed to load license file /storage/emulated/0/DJI/license.dlf (No such file or directory)

我认为这一定与许可证的新存储机制有关。后来我得到:

W/System.err: java.util.concurrent.TimeoutException
    at dji.midware.util.t.a(Unknown Source:40)
    at dji.midware.broadcastReceivers.DJINetWorkReceiver.b(Unknown Source:30)
W/System.err:     at dji.midware.broadcastReceivers.DJINetWorkReceiver.f(Unknown Source:88)
    at dji.midware.broadcastReceivers.DJINetWorkReceiver.<init>(Unknown Source:10)
    at dji.sdk.sdkmanager.DJISDKManager.initParams(Unknown Source:189)
    at dji.sdk.sdkmanager.DJISDKManager.initSDKManager(Unknown Source:146)
    at dji.sdk.sdkmanager.DJISDKManager.access$1100(Unknown Source:0)
    at dji.sdk.sdkmanager.DJISDKManager$5.run(Unknown Source:95)
    at java.lang.Thread.run(Thread.java:764)

尽管存在这些错误，在两个版本的 SDK 中，我的日志都返回 Returned from registerApp, we got: API Key successregister 但在 4.7.1 中，当我尝试访问之后的 UXSDK 元素。我确实向该应用授予了存储权限，所以我也不知道为什么该许可证文件会失败。

作为引用，我的 build.gradle 列出了 SDK 的以下相关 block :

// DJI SDK
implementation 'com.dji:dji-sdk:4.7.1'
implementation 'com.dji:dji-uxsdk:4.7.1'
compileOnly 'com.dji:dji-sdk-provided:4.7.1'
implementation 'com.squareup:otto:1.3.8'

更新:我将异常处理程序附加到发生崩溃的类，以便我可以获得真正的堆栈跟踪。实际应用崩溃的原因是:

E/ExceptionHandler: java.lang.IllegalStateException: Exception thrown on Scheduler.Worker thread. Add `onError` handling.
    at dji.thirdparty.rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:60)
    at android.os.Handler.handleCallback(Handler.java:790)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6494)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
 Caused by: dji.thirdparty.rx.exceptions.OnErrorNotImplementedException: Attempt to invoke virtual method 'void dji.ux.model.c.b(java.lang.String)' on a null object reference
    at dji.thirdparty.rx.Observable$26.onError(Observable.java:8524)
    at dji.thirdparty.rx.observers.SafeSubscriber._onError(SafeSubscriber.java:157)
    at dji.thirdparty.rx.observers.SafeSubscriber.onError(SafeSubscriber.java:120)
    at dji.thirdparty.rx.observers.SerializedObserver.onError(SerializedObserver.java:158)
    at dji.thirdparty.rx.observers.SerializedSubscriber.onError(SerializedSubscriber.java:79)
    at dji.thirdparty.rx.internal.operators.OnSubscribeConcatMap$ConcatMapSubscriber.innerError(OnSubscribeConcatMap.java:192)
    at dji.thirdparty.rx.internal.operators.OnSubscribeConcatMap$ConcatMapInnerSubscriber.onError(OnSubscribeConcatMap.java:340)
    at dji.thirdparty.rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.checkTerminated(OperatorObserveOn.java:264)
    at dji.thirdparty.rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:207)
    at dji.thirdparty.rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
    at android.os.Handler.handleCallback(Handler.java:790) 
    at android.os.Handler.dispatchMessage(Handler.java:99) 
    at android.os.Looper.loop(Looper.java:164) 
    at android.app.ActivityThread.main(ActivityThread.java:6494) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807) 
 Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void dji.ux.model.c.b(java.lang.String)' on a null object reference
    at dji.ux.panel.PreFlightCheckListPanel.addItemsOnDisconnect(Unknown Source:152)
    at dji.ux.panel.PreFlightCheckListPanel.transformValue(Unknown Source:245)
    at dji.ux.base.SimpleFrameLayoutWidget$1.a(Unknown Source:6)
    at dji.ux.base.SimpleFrameLayoutWidget$1.call(Unknown Source:2)
    at dji.thirdparty.rx.internal.util.ScalarSynchronousObservable$4.call(ScalarSynchronousObservable.java:223)
    at dji.thirdparty.rx.internal.util.ScalarSynchronousObservable$4.call(ScalarSynchronousObservable.java:220)
    at dji.thirdparty.rx.Observable$2.call(Observable.java:233)
    at dji.thirdparty.rx.Observable$2.call(Observable.java:225)
    at dji.thirdparty.rx.Observable.unsafeSubscribe(Observable.java:8741)
    at dji.thirdparty.rx.internal.operators.OnSubscribeConcatMap$ConcatMapSubscriber.drain(OnSubscribeConcatMap.java:286)
    at dji.thirdparty.rx.internal.operators.OnSubscribeConcatMap$ConcatMapSubscriber.onNext(OnSubscribeConcatMap.java:144)
    at dji.thirdparty.rx.internal.operators.OnSubscribeFromArray$FromArrayProducer.slowPath(OnSubscribeFromArray.java:100)
    at dji.thirdparty.rx.internal.operators.OnSubscribeFromArray$FromArrayProducer.request(OnSubscribeFromArray.java:63)
    at dji.thirdparty.rx.Subscriber.setProducer(Subscriber.java:211)
    at dji.thirdparty.rx.internal.operators.OnSubscribeFromArray.call(OnSubscribeFromArray.java:32)
    at dji.thirdparty.rx.internal.operators.OnSubscribeFromArray.call(OnSubscribeFromArray.java:24)
    at dji.thirdparty.rx.Observable.unsafeSubscribe(Observable.java:8741)
    at dji.thirdparty.rx.internal.operators.OnSubscribeConcatMap.call(OnSubscribeConcatMap.java:94)
    at dji.thirdparty.rx.internal.operators.OnSubscribeConcatMap.call(OnSubscribeConcatMap.java:42)
    at dji.thirdparty.rx.Observable.subscribe(Observable.java:8834)
    at dji.thirdparty.rx.Observable.subscribe(Observable.java:8801)
    at dji.thirdparty.rx.Observable.subscribe(Observable.java:8515)
    at dji.ux.c.h$3$1.onSuccess(Unknown Source:34)
    at dji.keysdk.KeyManager$1.onSuccess(Unknown Source:14)
    at dji.sdksharedlib.DJISDKCache.getValue(Unknown Source:14)
    at dji.keysdk.KeyManager.getValue(Unknown Source:18)
    at dji.ux.c.h$3.a

最佳答案

我最终通过复制示例小部件layout.xml (activity_default_widgets.xml) 文件的内容来解决此问题。我注意到两个版本之间元素排序之外的唯一变化是:

-custom:excludeItem="aircraftBatteryTemperature|ESCStatus"
+custom:excludeItem="ESCStatus"

还有几个地方:

-android:visibility="invisible"
+android:visibility="gone"

我不知道为什么这些更改会使应用程序因我的问题更新中的堆栈跟踪而崩溃，但只有更改此 XML 文件才允许 Activity 再次加载。

关于android - DJI SDK 4.7.1 突然崩溃，而 4.6 不会，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52315949/

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