检查网络连接的android [英] Check network connection android

问题描述

在我的应用程序，这是我测试的模拟器，我用下面的code检查网络连接（WIFI）：

In my application, which I test on emulator, I use the following code to check the network connection (WIFI):

    public boolean isOnline() {
    ConnectivityManager cm =
        (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnectedOrConnecting()) {
        return true;
    }
    return false;
}

此方法总是返回真，即使我禁用我的电脑的无线连接... 这是造成仿真器或者是其他什么东西？

This method returns always true, even if I disable the wireless connection of my computer... Is this caused by the emulator or is it something else?

如果这不是正确的方式来检查网络连接，我该怎么办呢？

If this is not the right way to check network connection, how can I do that?

推荐答案

试试这个code

 public boolean isNetworkOnline() {
    boolean status=false;
    try{
        ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo netInfo = cm.getNetworkInfo(0);
        if (netInfo != null && netInfo.getState()==NetworkInfo.State.CONNECTED) {
            status= true;
        }else {
            netInfo = cm.getNetworkInfo(1);
            if(netInfo!=null && netInfo.getState()==NetworkInfo.State.CONNECTED)
                status= true;
        }
    }catch(Exception e){
        e.printStackTrace();  
        return false;
    }
    return status;

    }  

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