android 蓝牙权限问题

Caused by: java.lang.SecurityException: Permission Denial: starting Intent { act=android.bluetooth.adapter.action.REQUEST_DISCOVERABLE flg=0x10000000 cmp=com.android.settings/.bluetooth.RequestPermissionActivity } from ProcessRecord{42d0abe8 10801:com.flyang.developer/u0a115} (pid=10801, uid=10115) requires android.permission.BLUETOOTH

在做蓝牙打印机时报此错误，是因为忘记在清单文件中加入蓝牙的权限

添加这两句话

<uses-permission android:name="android.permission.BLUETOOTH"/>
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>