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我试图让Eclipse的Android模拟器的Wifi网络的MAC ADDRES本:获取MAC地址的Android APP崩溃
WifiManager wifiManager = (WifiManager) LoginActivity.this.getSystemService(WIFI_SERVICE);
WifiInfo wInfo = wifiManager.getConnectionInfo();
String macAddress = wInfo.getMacAddress();
System.out.println("HI");
System.out.println(macAddress);
这是Android清单权限
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
当执行到达
System.out.println(macAddress);
该应用程序与Java nullpointerexception崩溃,并关闭它。
什么问题?我必须为模拟器添加wifi连接性?
你不能用wify连接模拟器[link](http://stackoverflow.com/questions/7876302/enabling-wifi-on-android-emulator) –