//依赖 切记不能忘
compile 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
//权限 切记不能忘
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
//方法 public void lanya(){ //获取蓝牙适配器 BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); //获取蓝牙状态isEnabled boolean enabled = bluetoothAdapter.isEnabled(); if(enabled==true){ bluetooth1.setText("蓝牙状态:开"); }else if(enabled==false){ bluetooth1.setText("蓝牙状态:关"); } }