network: android 网络判断

直接上代码，没有什么好说的！

package mark.zhang; import java.util.List; import android.content.Context; import android.location.LocationManager; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.telephony.TelephonyManager; public class NetworkProber { /** * 网络是否可用 * * @param activity * @return */ public static boolean isNetworkAvailable(Context context) { ConnectivityManager connectivity = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivity == null) { } else { 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; } /** * Gps是否打开 * * @param context * @return */ public static boolean isGpsEnabled(Context context) { LocationManager locationManager = ((LocationManager) context .getSystemService(Context.LOCATION_SERVICE)); List<String> accessibleProviders = locationManager.getProviders(true); return accessibleProviders != null && accessibleProviders.size() > 0; } /** * wifi是否打开 */ public static boolean isWifiEnabled(Context context) { ConnectivityManager mgrConn = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); TelephonyManager mgrTel = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); return ((mgrConn.getActiveNetworkInfo() != null && mgrConn .getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || mgrTel .getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS); } /** * 判断当前网络是否是wifi网络 * if(activeNetInfo.getType()==ConnectivityManager.TYPE_MOBILE) { //判断3G网 * * @param context * @return boolean */ public static boolean isWifi(Context context) { ConnectivityManager connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo(); if (activeNetInfo != null && activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI) { return true; } return false; } /** * 判断当前网络是否是3G网络 * * @param context * @return boolean */ public static boolean is3G(Context context) { ConnectivityManager connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo(); if (activeNetInfo != null && activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) { return true; } return false; } }

另外还有两个方法判断网络是否可用：

public static boolean isNetworkAvailable_00(Context context) { ConnectivityManager cm = ((ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE)); if (cm != null) { NetworkInfo info = cm.getActiveNetworkInfo(); if (info != null && info.isConnectedOrConnecting()) { return true; } } return false; } public static boolean isNetworkAvailable_01(Context context) { ConnectivityManager cm = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo network = cm.getActiveNetworkInfo(); if (network != null) { return network.isAvailable(); } return false; }