MVP在android上是常見的一種設計模式，在Launhcer,手機瀏覽器裡面經常會看到，觀摩了下其他大神寫的，現在總結下，操刀起來寫個demo

有什麼問題的地方請提出來。

大家一起研究討論。

demo 下載地址;http://download.csdn.net/detail/xufeifandj/8267619

demo主要是 主頁是一個webview，實現了 歷史記錄的新增，與顯示。例子比較簡單。

整個專案的結構如下：

HistoryPresenter.java 主要是對view與model的控制相當於MVC中的 控制層吧。

具體實現新增歷史記錄移除歷史記錄等業務邏輯，都在HistoryModel裡面去實現了。而UI.java則是一個介面，通過業務邏輯分析，把資料交予UI去通知MainAcitivy更新View.

package com.ferris.ferrismvp.presenter;

import java.util.List;

import com.ferris.ferrismvp.UI;
import com.ferris.ferrismvp.beam.History;
import com.ferris.ferrismvp.model.HistoryModel;
import com.ferris.ferrismvp.model.IHistoryModel;

public class HistoryPresenter {
	private UI ui;
	private IHistoryModel iHistoryModel;
	public HistoryPresenter(UI ui) {
		// TODO Auto-generated constructor stub
		this.ui=ui;
		this.iHistoryModel=new HistoryModel();
	}

	/**
	 * 新增歷史記錄
	 * @param hisString
	 */
	public void AddHistory(History hisString){
		iHistoryModel.addHistory(hisString);
	}
	
	/**
	 * 一掉歷史記錄
	 * @param hisString
	 */
	public void removeHistory(History hisString){
		iHistoryModel.removeHistory(hisString);
	}
	/**
	 * 顯示所有歷史記錄
	 */
	public void showHistorys(){
		List<History> histories=iHistoryModel.showAllHistory();
		ui.showAllHistory(histories);
	}
}
 

package com.ferris.ferrismvp.model;

import java.util.List;

import com.ferris.ferrismvp.beam.History;

public interface IHistoryModel {

	public void addHistory(History history);
	public void removeHistory(History history);
	public List<History>  showAllHistory();
}
 

package com.ferris.ferrismvp.model;

import java.util.ArrayList;
import java.util.List;

import com.ferris.ferrismvp.beam.History;

public class HistoryModel implements IHistoryModel{
	private List<History> historys=new ArrayList<History>();
	public HistoryModel() {
		// TODO Auto-generated constructor stub
		
	}

	@Override
	public void addHistory(History history) {
		// TODO Auto-generated method stub
		historys.add(history);
	}

	@Override
	public void removeHistory(History history) {
		// TODO Auto-generated method stub
		int removeId=-1;
		for(int i=0;i<historys.size();i++){
			if(historys.get(i).getUrl().equals(history.getUrl())){
				removeId=i;
			}
		}
		
		if(removeId!=-1){
			historys.remove(removeId);	
		}
	}

	@Override
	public List<History> showAllHistory() {
		// TODO Auto-generated method stub
		return historys;
	}

	

	

}

package com.ferris.ferrismvp.beam;

public class History {
	private String title;
	private String url;
	public History() {
		// TODO Auto-generated constructor stub
	}
	
	public History(String title,String url) {
		// TODO Auto-generated constructor stub
		this.title=title;
		this.url=url;
	}
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public String getUrl() {
		return url;
	}
	public void setUrl(String url) {
		this.url = url;
	}

	
}

package com.ferris.ferrismvp;

import java.util.List;

import com.ferris.ferrismvp.beam.History;

public interface UI {
	public void showAllHistory(List<History> historys);
}

package com.ferris.ferrismvp;

import java.util.List;

import com.ferris.ferrismvp.beam.History;
import com.ferris.ferrismvp.presenter.HistoryPresenter;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity implements OnClickListener,UI{
	private WebView webView1 ;
	private Button addHistory,showHistory;
	private HistoryPresenter historyPresenter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        findView();
        initWebView();
        
        historyPresenter=new HistoryPresenter(this);
    }
    
	private void initWebView() {
		// TODO Auto-generated method stub
		webView1.getSettings().setJavaScriptEnabled(true);  
		webView1.loadUrl("http://www.baidu.com");  
	}

	private void findView() {
		// TODO Auto-generated method stub
		webView1=(WebView)findViewById(R.id.webView1);
		addHistory=(Button)findViewById(R.id.button1);
		showHistory=(Button)findViewById(R.id.button2);
        addHistory.setOnClickListener(this);
        showHistory.setOnClickListener(this);
	}
	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		switch (v.getId()) {
		case R.id.button1://新增歷史記錄
			historyPresenter.AddHistory(new History(webView1.getTitle(),webView1.getUrl()));
			break;
		case R.id.button2://顯示歷史記錄
			historyPresenter.showHistorys();
			break;
		
		default:
			break;
		}
	}


	@Override
	public void showAllHistory(List<History> historys) {
		// TODO Auto-generated method stub
		Toast.makeText(MainActivity.this, historys.toString(), Toast.LENGTH_SHORT).show();
	}


  
}