连接服务器超时的Demo

下面这个例子是连接网络超时的例子:

package cn.com;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.HTTP;

import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class TimeOutTest extends Activity implements OnClickListener {
	// 主,子线程之间的通讯handler
	private Handler handler = new Handler() {
	};
	private static final int SYNC_DIALOG = 0;
	private final static String HOST = "***.***.***.***";
	private final static int PORT = 8080;
	private final static String HOST_IP = "http://" + HOST + ":" + PORT;
	private final static String loginURL = HOST_IP + "******";
	private ProgressDialog myDialog;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		Button load = (Button) findViewById(R.id.load);
		load.setOnClickListener(this);
	}

	protected Dialog onCreateDialog(int id) {
		switch (id) {
		case SYNC_DIALOG:
			myDialog = new ProgressDialog(TimeOutTest.this);
			// progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
			myDialog.setMessage(getResources().getString(R.string.loginData));
			return myDialog;
		default:
			return null;
		}
	}

	@Override
	public void onClick(View v) {
		// 显示Progress对话框
		showDialog(SYNC_DIALOG);
		//新起一个线程进行下载
		new Thread(new Runnable() {
			public void run() {
				// TODO Auto-generated method stub
				try {
					//设置连接超时
					HttpParams httpParameters = new BasicHttpParams();
					int timeoutConnection = 3000;
					HttpConnectionParams.setConnectionTimeout(httpParameters,
							timeoutConnection);
					DefaultHttpClient httpclient = new DefaultHttpClient(
							httpParameters);

					HttpPost httpost = new HttpPost(loginURL);
					List<NameValuePair> nvps = new ArrayList<NameValuePair>();
					nvps.add(new BasicNameValuePair("username", "go"));
					nvps.add(new BasicNameValuePair("password", "go"));
					httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

					HttpResponse response;
					// This is always a final response
					response = httpclient.execute(httpost);

					HttpEntity entity = response.getEntity();
					InputStream is = entity.getContent();
					ConvertStreamToString(is);

				} catch (ClientProtocolException e) {
					System.out
							.println("_________ClientProtocolException_________");
				} catch (UnsupportedEncodingException e) {
					System.out
							.println("_________UnsupportedEncodingException_________");
				} catch (IOException e) {
					System.out.println("_________IOException_________");
					dismissDialog(SYNC_DIALOG);
				}
			}
		}).start();

	}

	//读取字符流
	public String ConvertStreamToString(InputStream is) {
		StringBuffer sb = new StringBuffer();
		BufferedReader br = new BufferedReader(new InputStreamReader(is));
		String data = "";
		try {
			while ((data = br.readLine()) != null) {
				sb.append(data);
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		final String result = sb.toString();
		handler.post(new Runnable() {
			public void run() {
				Toast.makeText(TimeOutTest.this, result, Toast.LENGTH_LONG)
						.show();
			}
		});

		System.out.println("result ===============" + result);
		return result;
	}

}

习惯了的权限

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