获取网络信息时,ConnectivityManager崩溃

Question

我是Android的新手,当我给出以下代码片段时,我的android应用程序崩溃了.

ConnectivityManager manager = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE);
manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI); // Application is crashing in this line.

我还检查了androidmanifest.xml,在那里我给了应用程序的互联网权限.任何帮助对我的进一步工作都非常有用.

- 谢谢,罗恩..

Answer 1

我不确定你想说什么,但如果你想检查互联网连接,那么你可以使用这个代码

/**
     * THIS IS FUNCTION FOR CHECKING INTERNET CONNECTION
     * @return TRUE IF INTERNET IS PRESENT ELSE RETURN FALSE
     */
    public boolean checkInternetConnection() {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo activeNetworkInfo = cm.getActiveNetworkInfo();
        return (activeNetworkInfo != null && activeNetworkInfo.isAvailable() && activeNetworkInfo.isConnected());
    }

别忘了

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>