//设置高精度模式
    private AMapLocationClientOption getDefaultOption() {
        AMapLocationClientOption mOption = new AMapLocationClientOption();
        mOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);
        return mOption;
    }

    //打开系统wifi设置界面
    Intent intent = new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS);
    startActivity(intent); // 打开系统设置界面