android应用程序future.usb.usbmanager

我在新买的安卓平板电脑上运行我的应用程序时遇到了一些问题。它在我以前的安卓手机上工作。这是我的logcat输出--

从

解决方案是使用android.hardware.usb而不是com.android.future.usb

为了与android.hardware.usb版本匹配，一些代码行也必须更改。您需要的一切都在包含的链接中

03-23 16:13:12.250: E/AndroidRuntime(12284): FATAL EXCEPTION: main
03-23 16:13:12.250: E/AndroidRuntime(12284): java.lang.NoClassDefFoundError: com.android.future.usb.UsbManager
03-23 16:13:12.250: E/AndroidRuntime(12284):    at edu.uidaho.pong.PongActivity.setupAccessory(PongActivity.java:111)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at edu.uidaho.pong.PongActivity.onCreate(PongActivity.java:44)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at android.app.Activity.performCreate(Activity.java:4465)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at android.app.ActivityThread.access$600(ActivityThread.java:123)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at android.os.Handler.dispatchMessage(Handler.java:99)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at android.os.Looper.loop(Looper.java:137)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at android.app.ActivityThread.main(ActivityThread.java:4424)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at java.lang.reflect.Method.invokeNative(Native Method)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at java.lang.reflect.Method.invoke(Method.java:511)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
03-23 16:13:12.250: E/AndroidRuntime(12284):    at dalvik.system.NativeStart.main(Native Method)