如何在
android中打印网站的IP地址？我可以运行inetaddress并使用netbean中的system.out.println()打印它.以下是我的示例编码.
public String getHostAddress () {
InetAddress addr=null;
try {
addr= InetAddress.getByName("www.google.com");
}
catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return addr.getHostAddress();
}
它总是显示不幸的是,你的程序已经停止.
可能知道有没有办法在Android中获取被访问网站的IP地址？
05-19 14:22:39.008: I/dalvikvm(1062): threadid=3: reacting to signal 3
05-19 14:22:39.049: I/dalvikvm(1062): Wrote stack traces to '/data/anr/traces.txt'
05-19 14:22:39.688: I/dalvikvm(1062): threadid=3: reacting to signal 3
05-19 14:22:39.828: I/dalvikvm(1062): Wrote stack traces to '/data/anr/traces.txt'
05-19 14:22:39.929: D/AndroidRuntime(1062): Shutting down VM
05-19 14:22:39.948: W/dalvikvm(1062): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
05-19 14:22:40.039: E/AndroidRuntime(1062): FATAL EXCEPTION: main
05-19 14:22:40.039: E/AndroidRuntime(1062): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.destinationurl/com.android.destinationurl.DestinationURL}: android.os.NetworkOnMainThreadException
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.app.ActivityThread.access$600(ActivityThread.java:123)
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.os.Handler.dispatchMessage(Handler.java:99)
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.os.Looper.loop(Looper.java:137)
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.app.ActivityThread.main(ActivityThread.java:4424)
05-19 14:22:40.039: E/AndroidRuntime(1062): at java.lang.reflect.Method.invokeNative(Native Method)
05-19 14:22:40.039: E/AndroidRuntime(1062): at java.lang.reflect.Method.invoke(Method.java:511)
05-19 14:22:40.039: E/AndroidRuntime(1062): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
05-19 14:22:40.039: E/AndroidRuntime(1062): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
05-19 14:22:40.039: E/AndroidRuntime(1062): at dalvik.system.NativeStart.main(Native Method)
05-19 14:22:40.039: E/AndroidRuntime(1062): Caused by: android.os.NetworkOnMainThreadException
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099)
05-19 14:22:40.039: E/AndroidRuntime(1062): at java.net.InetAddress.lookupHostByName(InetAddress.java:391)
05-19 14:22:40.039: E/AndroidRuntime(1062): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242)
05-19 14:22:40.039: E/AndroidRuntime(1062): at java.net.InetAddress.getByName(InetAddress.java:295)
05-19 14:22:40.039: E/AndroidRuntime(1062): at com.android.destinationurl.DestinationURL.getHostAddress(DestinationURL.java:57)
05-19 14:22:40.039: E/AndroidRuntime(1062): at com.android.destinationurl.DestinationURL.onCreate(DestinationURL.java:40)
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.app.Activity.performCreate(Activity.java:4465)
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
05-19 14:22:40.039: E/AndroidRuntime(1062): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
05-19 14:22:40.039: E/AndroidRuntime(1062): ... 11 more
05-19 14:22:40.248: I/dalvikvm(1062): threadid=3: reacting to signal 3
05-19 14:22:40.283: I/dalvikvm(1062): Wrote stack traces to '/data/anr/traces.txt'
05-19 14:22:40.608: I/dalvikvm(1062): threadid=3: reacting to signal 3
05-19 14:22:40.698: I/dalvikvm(1062): Wrote stack traces to '/data/anr/traces.txt'
05-19 14:22:42.078: I/Process(1062): Sending signal. PID: 1062 SIG: 9
解决方法
只是,
它是你在URL上的错误,只需更正它..
“www.google.com”您的网址中有4个w …
并添加Use-Permission< uses-permission android：name =“android.permission.INTERNET”>
在您的Android应用程序的清单文件中..
这个是正确的..
addr = InetAddress.getByName(“www.google.com”);
编辑：使用AsyncTask进行网络操作
String netAddress = null;
try
{
netAddress = new NetTask().execute("www.google.com").get();
}
catch (Exception e1)
{
e1.printStackTrace();
}
而这一个是NetTask类..
public class NetTask extends AsyncTask<String,Integer,String>
{
@Override
protected String doInBackground(String... params)
{
InetAddress addr = null;
try
{
addr = InetAddress.getByName(params[0]);
}
catch (UnknownHostException e)
{
e.printStackTrace();
}
return addr.getHostAddress();
}
}
