Android安卓獲取網絡狀態

首先在AndroidManifest.xml添加權限

1,判斷是否有網絡連接

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;  
}

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;  
}

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;  
}

            //返回值 -1：沒有網絡  1：WIFI網絡2：wap網絡3：net網絡
	    public static int GetNetype(Context context)
	    { 
	        int netType = -1;  
	        ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); 
	        NetworkInfo networkInfo = connMgr.getActiveNetworkInfo(); 
	        if(networkInfo==null)
	        { 
	            return netType; 
	        } 
	        int nType = networkInfo.getType(); 
	        if(nType==ConnectivityManager.TYPE_MOBILE)
	        { 
	            if(networkInfo.getExtraInfo().toLowerCase().equals("cmnet"))
	            { 
	                netType = 3; 
	            } 
	            else
	            { 
	                netType = 2; 
	            } 
	        } 
	        else if(nType==ConnectivityManager.TYPE_WIFI)
	        { 
	            netType = 1; 
	        } 
	        return netType; 
	    }