一、问题： java.lang.NoClassDefFoundError: androidx.localbroadcastmanager.content.LocalBroadcastManager 解决方法
1、Android Studio版本号（Help > About 即可查看）
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gradle-wrapper：https://services.gradle.org/distributions/gradle-5.1.1-all.zip
java.lang.NoClassDefFoundError: androidx.localbroadcastmanager.content.LocalBroadcastManager
E/AndroidRuntime( 4074): at com.alibaba.ailabs.custom.core.DeviceController.init(DeviceController.java:135)
E/AndroidRuntime( 4074): at com.alibaba.ailabs.custom.core.DeviceController.<init>(DeviceController.java:128)
E/AndroidRuntime( 4074): at com.alibaba.ailabs.custom.core.DeviceController.getInstance(DeviceController.java:224)
E/AndroidRuntime( 4074): at com.alibaba.ailabs.custom.core.GatewayBridge.fakeWakeup(GatewayBridge.java:73)
E/AndroidRuntime( 4074): at com.alibaba.ailabs.geniesdk_adapter.audioin.farfield.WakeupCallbackImpl.onWakeup(WakeupCallbackImpl.java:24)
E/AndroidRuntime( 4074): at com.alibaba.ailabs.geniesdk.audioin.recorder.NearFieldRecorder.wakeup(NearFieldRecorder.java:144)
E/AndroidRuntime( 4074): at com.zqc.tmallelf.NearFieldDemoActivity$1.onTouch(NearFieldDemoActivity.java:96)
E/AndroidRuntime( 4074): at android.view.View.dispatchTouchEvent(View.java:7732)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2244)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2244)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2244)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2244)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2244)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2244)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2244)
E/AndroidRuntime( 4074): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917)
E/AndroidRuntime( 4074): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2157)
E/AndroidRuntime( 4074): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1591)
E/AndroidRuntime( 4074): at android.app.Activity.dispatchTouchEvent(Activity.java:2524)
E/AndroidRuntime( 4074): at androidx.appcompat.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:69)
E/AndroidRuntime( 4074): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2105)
E/AndroidRuntime( 4074): at android.view.View.dispatchPointerEvent(View.java:7917)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4024)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3903)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3429)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3479)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3448)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3555)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3456)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3612)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3429)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3479)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3448)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3456)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3429)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5621)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5600)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5571)
E/AndroidRuntime( 4074): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5709)
E/AndroidRuntime( 4074): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:194)
E/AndroidRuntime( 4074): at android.os.MessageQueue.nativePollOnce(Native Method)
E/AndroidRuntime( 4074): at android.os.MessageQueue.next(MessageQueue.java:138)
E/AndroidRuntime( 4074): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime( 4074): at android.app.ActivityThread.main(ActivityThread.java:5375)
E/AndroidRuntime( 4074): at java.lang.reflect.Method.invokeNative(Nati
解决方法：
implementation 'com.android.support:support-v4:4.4.1'
