如何在HTC One应用程序开发中获取Android网络连接状态?
我是Android开发的新手,我将开发一个需要互联网的应用程序。因此,我需要获取互联网的状态。任何帮助都将不胜感激。
如何在HTC One应用程序开发中获取Android网络连接状态?
我是Android开发的新手,我将开发一个需要互联网的应用程序。因此,我需要获取互联网的状态。任何帮助都将不胜感激。
尝试以下方法并阅读更多
public static String getConnectivityStatusString(Context context) {
int conn = NetworkUtil.getConnectivityStatus(context);
String status = null;
if (conn == NetworkUtil.TYPE_WIFI) {
status = "Wifi enabled";
} else if (conn == NetworkUtil.TYPE_MOBILE) {
status = "Mobile data enabled";
} else if (conn == NetworkUtil.TYPE_NOT_CONNECTED) {
status = "Not connected to Internet";
}
return status;
}
private boolean haveNetworkConnection() {
boolean haveConnectedWifi = false;
boolean haveConnectedMobile = false;
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo[] netInfo = cm.getAllNetworkInfo();
for (NetworkInfo ni : netInfo) {
if (ni.getTypeName().equalsIgnoreCase("WIFI"))
if (ni.isConnected())
haveConnectedWifi = true;
if (ni.getTypeName().equalsIgnoreCase("MOBILE"))
if (ni.isConnected())
haveConnectedMobile = true;
}
return haveConnectedWifi || haveConnectedMobile;
}
在你的Android清单中:
`<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />`
`<uses-permission android:name="android.permission.INTERNET" />`
`<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />`
使用这段代码:此代码可在所有Android版本中运行。
public static boolean isInternetOn(Context context)
{
boolean haveConnectedWifi = false;
boolean haveConnectedMobile = false;
ConnectivityManager cm = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo[] netInfo = cm.getAllNetworkInfo();
for (NetworkInfo ni : netInfo)
{
if (ni.getTypeName().equalsIgnoreCase("WIFI"))
if (ni.isConnected())
haveConnectedWifi = true;
if (ni.getTypeName().equalsIgnoreCase("MOBILE"))
if (ni.isConnected())
haveConnectedMobile = true;
}
return haveConnectedWifi || haveConnectedMobile;
}
如果互联网可用,它会返回true,当互联网不可用时返回false。
public abstract class NetworkUtils
{
public static boolean isNetworkConnected(Context context)
{
ConnectivityManager connectivityManager = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
return networkInfo != null && networkInfo.isConnected();
}
}
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
if (!NetworkUtils.isNetworkConnected(getApplicationContext()))
{
// msg to display.
}
public static boolean isNetworkAvailable(Context context)
{
return ((ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE)).getActiveNetworkInfo() != null;
}
或者
public static boolean isNetworkAvailable(Context context) {
boolean outcome = false;
if (context != null) {
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo[] networkInfos = cm.getAllNetworkInfo();
for (NetworkInfo tempNetworkInfo : networkInfos) {
/**
* Can also check if the user is in roaming
*/
if (tempNetworkInfo.isConnected()) {
outcome = true;
break;
}
}
}
return outcome;
}
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
你好,请按如下方式创建一个名为ConnectionDetector的类:
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
public class ConnectionDetector {
private Context _context;
public ConnectionDetector(Context context){
this._context = context;
}
public boolean isConnectingToInternet(){
ConnectivityManager connectivity = (ConnectivityManager) _context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null)
{
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null)
for (int i = 0; i < info.length; i++)
if (info[i].getState() == NetworkInfo.State.CONNECTED)
{
return true;
}
}
return false;
}
}
您可以按照以下方式使用此类
ConnectionDetector detector= new ConnectionDetector(getApplicationContext());
Boolean isInternetPresent = detector.isConnectingToInternet(); // true or false
有了这个布尔值isInternetPresent,你就可以在开发中进一步进行。
if (isInternetPresent) {
// Internet Connection is Present
} else {
// Internet connection is not present
}
为了支持这一切,您需要将权限添加到您的manifest.xml中。
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />