Android工具类-关于网络、状态的工具类

[android]代码库

    public class NetworkUtils {  
      
        /** 
         * 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) {  
         *  
         * @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;  
        }  
    }  

以上方法均通过测试，tv_result为自设定的TextView。

 

        tv_result.append("网络是否可用:"+NetworkUtils.isNetworkAvailable(MainActivity.this)+"\n");  
        tv_result.append("GPS开关是否打开:"+NetworkUtils.isGpsEnabled(MainActivity.this)+"\n");  
        tv_result.append("是否为3G网络:"+NetworkUtils.is3G(MainActivity.this)+"\n");  
        tv_result.append("WIFI是否打开:"+NetworkUtils.isWifiEnabled(MainActivity.this)+"\n");  
        tv_result.append("是否为WIFI网络:"+NetworkUtils.isWifi(MainActivity.this)+"\n");