android – E / BluetoothAdapter(883)：蓝牙绑定器为空

我试图启用禁用蓝牙设备.出于这个原因,我写了下面的代码,但它给出了错误,也在下面.

@H_772_9@if ( bluetoothAdmin == null ) { return ; } if ( bluetooth . isEnabled()){ bluetooth . disable (); } else { bluetooth . enable(); }

在创造

@H_772_9@BLuetoothAdapter bluetooth = BluetoothAdapter.getDefaultAdapter() ;

在manisfest

@H_772_9@<uses-permission android:name="android.permission.bLUETOOTH" /> <uses-permission android:name="android.permission.bLUETOOTH_ADMIN" />

错误：

@H_772_9@01-23 07:18:53.167: E/BluetoothAdapter(883): Bluetooth binder is null

堆栈的一半：

@H_772_9@01-23 07:36:55.624: E/SurfaceFlinger(36): ro.sf.lcd_density must be defined as a build property 01-23 07:37:16.954: E/ActivityThread(642): service com.android.exchange.Exchangeservice has leaked serviceConnection com.android.emailcommon.service.serviceProxy$ProxyConnection@40d51230 that was originally bound here 01-23 07:37:16.954: E/ActivityThread(642): android.app.serviceConnectionLeaked: service com.android.exchange.Exchangeservice has leaked serviceConnection com.android.emailcommon.service.serviceProxy$ProxyConnection@40d51230 that was originally bound here 01-23 07:37:16.954: E/ActivityThread(642): at android.app.LoadedApk$serviceDispatcher.<init>(LoadedApk.java:969) 01-23 07:37:16.954: E/ActivityThread(642): at android.app.LoadedApk.getserviceDispatcher(LoadedApk.java:863) 01-23 07:37:16.954: E/ActivityThread(642): at android.app.ContextImpl.bindservice(ContextImpl.java:1418) 01-23 07:37:16.954: E/ActivityThread(642): at android.app.ContextImpl.bindservice(ContextImpl.java:1407) 01-23 07:37:16.954: E/ActivityThread(642): at android.content.Contextwrapper.bindservice(Contextwrapper.java:473) 01-23 07:37:16.954: E/ActivityThread(642): at com.android.emailcommon.service.serviceProxy.setTask(serviceProxy.java:157) 01-23 07:37:16.954: E/ActivityThread(642): at com.android.emailcommon.service.serviceProxy.setTask(serviceProxy.java:145) 01-23 07:37:16.954: E/ActivityThread(642): at com.android.emailcommon.service.AccountserviceProxy.getdeviceid(AccountserviceProxy.java:11 6) 01-23 07:37:16.954: E/ActivityThread(642): at com.android.exchange.Exchangeservice.getdeviceid(Exchangeservice.java:1249) 01-23 07:37:16.954: E/ActivityThread(642): at com.android.exchange.Exchangeservice$7.run(Exchangeservice.java:1856) 01-23 07:37:16.954: E/ActivityThread(642): at com.android.emailcommon.utility.Utility$2.doInBACkground(Utility.java:551) 01-23 07:37:16.954: E/ActivityThread(642): at com.android.emailcommon.utility.Utility$2.doInBACkground(Utility.java:549) 01-23 07:37:16.954: E/ActivityThread(642): at android.os.AsyncTask$2.call(AsyncTask.java:287) 01-23 07:37:16.954: E/ActivityThread(642): at java.util.concurrent.FutureTask.run(FutureTask.java:234) 01-23 07:37:16.954: E/ActivityThread(642): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 01-23 07:37:16.954: E/ActivityThread(642): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 01-23 07:37:16.954: E/ActivityThread(642): at java.lang.Thread.run(Thread.java:856) 01-23 07:37:16.964: E/StrictMode(642): null 01-23 07:37:16.964: E/StrictMode(642): android.app.serviceConnectionLeaked: service com.android.exchange.Exchangeservice has leaked serviceConnection com.android.emailcommon.service.serviceProxy$ProxyConnection@40d51230 that was originally bound here

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