android登陆注册入门级实例

【实例截图】

【核心代码】

package com.cbd.qq;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

import org.apache.http.Header;

import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.RequestParams;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.text.TextUtils;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

	private EditText userText;
	private EditText passText;
	private Handler handler;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		userText=(EditText) findViewById(R.id.username);
		passText=(EditText) findViewById(R.id.password);
		handler=new Handler(){

			@Override
			public void handleMessage(Message msg) {
				if(msg.what==1)
				{
					Toast.makeText(MainActivity.this, msg.obj.toString(), Toast.LENGTH_SHORT).show();
				}
			}
			
		};
	}

	public void login(View v)
	{
		 String username=userText.getText().toString().trim();
		 String password=passText.getText().toString().trim();
		if(!TextUtils.isEmpty(username) && !TextUtils.isEmpty(password))
		{
			try {
				//框架Post请求
				String url = "http://192.168.0.161:8080/webqq/loginServlet";
				username=URLEncoder.encode(username,"utf-8");
				password=URLEncoder.encode(password,"utf-8");
				AsyncHttpClient client=new AsyncHttpClient();
				RequestParams params=new RequestParams();
				params.put("username",username);
				params.put("password",password);
				client.post(url, params, new AsyncHttpResponseHandler(){

					@Override
					public void onFailure(int arg0, Header[] arg1, byte[] arg2,
							Throwable arg3) {
						// TODO Auto-generated method stub
						
					}

					@Override
					public void onSuccess(int arg0, Header[] arg1, byte[] arg2) {
						try {
							Toast.makeText(MainActivity.this, new String(arg2,"GBK"), 0).show();
						} catch (UnsupportedEncodingException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
						
					}
					
				});
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		
			/*try {
				String url = "http://192.168.0.161:8080/webqq/loginServlet?username=" 
					    URLEncoder.encode(username,"utf-8") "&password=" URLEncoder.encode(password,"utf-8");
				AsyncHttpClient client=new AsyncHttpClient();
				client.get(url, new AsyncHttpResponseHandler(){

					@Override
					public void onFailure(int arg0, Header[] arg1, byte[] arg2,
							Throwable arg3) {
						// TODO Auto-generated method stub
						
					}

					@Override
					public void onSuccess(int arg0, Header[] arg1, byte[] arg2) {
						try {
							Toast.makeText(MainActivity.this, new String(arg2,"GBK"), 0).show();
						} catch (UnsupportedEncodingException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
						
					}
					
				});
			
			} catch (Exception e) {
				
				e.printStackTrace();
			} */
			
			
			
			      //基于HTTP协议发送数据到服务器端
			     /* new Thread(){
			    	  public void run(){
			    		  //String data=SendDataUtils.HttpGetSendData(username, password);
			    		 // String data=SendDataUtils.HttpPostSendData(username, password);
			    		  //String data=SendDataUtils.HttpClientGet(username, password);
			    		 // String data=SendDataUtils.HttpClientPost(username, password);
			    		 
			    		  
			    		  if(data!=null)
			    		  {
			    		     Message msg=Message.obtain();
			    		     msg.what=1;
			    		     msg.obj=data;
			    		     handler.sendMessage(msg);
			    		  }
			    	  }
			      }.start();*/
		}else{
			Toast.makeText(this, "用户名和密码不能为空!", Toast.LENGTH_SHORT).show();
		}
	}

	
}