android检查网络连接

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

复制代码 代码如下:

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

复制代码 代码如下:

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

复制代码 代码如下:

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

复制代码 代码如下:

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;

}