android - 在 Android 1.6 上使用 backport-android-bluetooth

Question

我正在尝试在 Android 1.6 上使用蓝牙编写应用程序。由于它不受官方支持，我找到了 android.bluetooth API ( http://code.google.com/p/backport-android-bluetooth ) 的反向端口。但是当我部署示例聊天应用程序(为向后移植修改)时，LogCat 给我以下错误:

我的问题是，如何在 1.6 上使用 backport-android-bluetooth 并且是否有任何工作示例？

谢谢!

    11-30 14:03:19.890: ERROR/AndroidRuntime(1927): Uncaught handler: thread main exiting due to uncaught exception
11-30 14:03:19.906: ERROR/AndroidRuntime(1927): java.lang.ExceptionInInitializerError
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at backport.android.bluetooth.BluetoothSocket.<init>(BluetoothSocket.java:69)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at backport.android.bluetooth.BluetoothServerSocket.<init>(BluetoothServerSocket.java:16)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at backport.android.bluetooth.BluetoothAdapter.listenUsingRfcommWithServiceRecord(BluetoothAdapter.java:513)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at com.example.bluetooth.BluetoothChatService$AcceptThread.<init>(BluetoothChatService.java:237)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at com.example.bluetooth.BluetoothChatService.start(BluetoothChatService.java:109)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at com.example.bluetooth.BluetoothChat.onResume(BluetoothChat.java:138)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1225)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.app.Activity.performResume(Activity.java:3559)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2838)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2866)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2420)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.app.ActivityThread.access$2100(ActivityThread.java:116)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.os.Handler.dispatchMessage(Handler.java:99)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.os.Looper.loop(Looper.java:123)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.app.ActivityThread.main(ActivityThread.java:4203)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at java.lang.reflect.Method.invokeNative(Native Method)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at java.lang.reflect.Method.invoke(Method.java:521)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at dalvik.system.NativeStart.main(Native Method)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927): Caused by: java.lang.UnsatisfiedLinkError: classInitNative
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.bluetooth.RfcommSocket.classInitNative(Native Method)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     at android.bluetooth.RfcommSocket.<clinit>(RfcommSocket.java:152)
11-30 14:03:19.906: ERROR/AndroidRuntime(1927):     ... 21 more

Answer 1

我认为这个向后移植蓝牙不起作用，因为 1.6 屏蔽了使用过的 api。这是 Google 对 1.6 所做的更新之一:阻止开发人员使用内部 api，我猜 BT 就是其中之一......:(。