ZAC*_*ACK 5 android connectivity
我想知道如何在发送数据之前验证 Android中的网络连接?谁能帮我 ?我尝试这个代码,但没有结果
public boolean isConnectingToInternet() {
ConnectivityManager connectivity = (ConnectivityManager) ctx.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;
}
Run Code Online (Sandbox Code Playgroud)
检查你的清单:添加
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
Run Code Online (Sandbox Code Playgroud)