基本上我正在尝试创建on ping应用程序。但当我运行此应用程序时,我的应用程序无法ping所需的网络

未知主机ping www.google.com

我已在清单文件中进行了更改,以寻求Internet许可

此外,当我运行程序作为一个简单的Java类,它是完美的工作。

private void ping(String s) {

String str = "";

int count = 0;

try {

Process process = null;

if (Build.VERSION.SDK_INT <= 16) {

// shiny APIS

process = Runtime.getRuntime().exec(

"/system/bin/ping -w 1 -c 1 " + s);

} else {

process = new ProcessBuilder()

.command("/system/bin/ping", s)

.redirectErrorStream(true)

.start();

}

BufferedReader reader = new BufferedReader(new InputStreamReader(

process.getInputStream()));

StringBuffer output = new StringBuffer();

String temp;

while ((temp = reader.readLine()) != null)//.read(buffer)) > 0)

{

output.append(temp);

count++;

}

reader.close();

if(count > 0)

str = output.toString();

process.destroy();

} catch (IOException e) {

e.printStackTrace();

}

Log.i("PING Count", ""+count);

Log.i("PING String", str);

}

我怎么办?