Android--判断是否连接成功了指定wifi

//通过反射的方式去判断wifi是否已经连接上，并且可以开始传输数据
private boolean checkWiFiConnectSuccess(WifiInfo wifiInfo) {
    Class classType = wifiInfo.getClass();
    try {
        Field field = classType.getDeclaredField("mMeteredHint");//设置为可以访问
        field.setAccessible(true);
        boolean result = (boolean) field.get(wifiInfo);
        return result;
    } catch (NoSuchFieldException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }
    return false;
}