android login example

package opt.vdc.phone; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; import android.app.Activity; import android.net.Uri; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.content.Intent; public class test extends Activity { // 用户名输入框 private EditText et_username; // 密码输入框 private EditText et_passwd; // 登录按钮 private Button btn_login; // 取消按钮 Button btn_reset; BtnListener btnListener = new BtnListener(); /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.login); // 从当前事件中找到输入框，初始化 et_username = (EditText) findViewById(R.id.et_username); et_passwd = (EditText) findViewById(R.id.et_passwd); // 从当前事件中找到登录按钮，初始化 btn_login = (Button) findViewById(R.id.btn_login); btn_login.setOnClickListener(btnListener); // ... btn_reset = (Button) findViewById(R.id.btn_reset); btn_reset.setOnClickListener(btnListener); } // 点击事件 private class BtnListener implements View.OnClickListener { @Override public void onClick(View v) { URL url = null; HttpURLConnection httpurlconnection = null; // TODO Auto-generated method stub if (v.getId() == R.id.btn_login) { /* try { url = new URL("http://csdn.net"); InputStream stream = null; httpurlconnection = (HttpURLConnection) url.openConnection(); httpurlconnection.setDoOutput(true); httpurlconnection.setRequestMethod("POST"); String username="username=" + et_username.getText()+ " password="+ et_passwd.getText(); httpurlconnection.getOutputStream().write(username.getBytes()); httpurlconnection.getOutputStream().flush(); httpurlconnection.getOutputStream().close(); int code = httpurlconnection.getResponseCode(); System.out.println("code " + code); stream = httpurlconnection.getInputStream(); String str = convertStreamToString(stream); } catch(Exception e) { e.printStackTrace(); } finally { if(httpurlconnection!=null) httpurlconnection.disconnect(); }*/ Intent intent = new Intent(); intent.setAction("android.intent.action.VIEW"); Uri content_uri_browsers = Uri.parse("http://csdn.net"); intent.setData(content_uri_browsers); intent.setClassName("com.android.browser","com.android.browser.BrowserActivity"); startActivity(intent); } else if (v.getId() == R.id.btn_reset) { finish(); } } private String convertStreamToString(InputStream stream) { // TODO Auto-generated method stub return null; } } }