android NetworkInfo类

获取网络信息需要在AndroidManifest.xml文件中加入相应的权限。

1）判断是否有网络连接

public boolean isNetworkConnected(Context context) {
    if (context != null) {
        ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
        if (mNetworkInfo != null) {
            return mNetworkInfo.isAvailable();
        }
    }
    return false;
}

 

2）判断WIFI网络是否可用

public boolean isWifiConnected(Context context) {
    if (context != null) {
        ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo mWiFiNetworkInfo = mConnectivityManager
                .getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        if (mWiFiNetworkInfo != null) {
            return mWiFiNetworkInfo.isAvailable();
        }
    }
    return false;
}

3）判断MOBILE网络是否可用

public boolean isMobileConnected(Context context) {
    if (context != null) {
        ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo mMobileNetworkInfo = mConnectivityManager
                .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        if (mMobileNetworkInfo != null) {
            return mMobileNetworkInfo.isAvailable();
        }
    }
    return false;
}

 4）获取当前网络连接的类型信息

public static int getConnectedType(Context context) {
    if (context != null) {
        ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
        if (mNetworkInfo != null && mNetworkInfo.isAvailable()) {
            return mNetworkInfo.getType();
        }
    }
    return -1;
}