天天看點
傳回

207.m1-ListView添加banner圖

banner圖也作為一個holder來添加到布局的顯示中，注意banner的實作是使用viewPagger來實作，畫圖之前需要需要進行測量并添加到FrameLayout中。圖檔的List需要單獨解并傳遞資料

HomeFragment.java

package com.ldw.market.fragment;

import java.util.List;

import android.os.Bundle;
import android.text.format.Formatter;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.AbsListView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.RatingBar;
import android.widget.TextView;

import com.ldw.market.R;
import com.ldw.market.Adapter.DefaultAdapter;
import com.ldw.market.domain.AppInfo;
import com.ldw.market.holder.BaseHolder;
import com.ldw.market.holder.HomePictureHolder;
import com.ldw.market.http.HttpHelper;
import com.ldw.market.protocol.GameProtocol;
import com.ldw.market.protocol.HomeProtocol;
import com.ldw.market.utils.UiUtils;
import com.ldw.market.utils.BitmapHelper;
import com.ldw.market.view.BaseListView;
import com.lidroid.xutils.BitmapUtils;
import com.lidroid.xutils.bitmap.PauseOnScrollListener;

/*
 * Home頁面，主體的加載的幾個頁面和伺服器請求資料都是在BaseFragment中去實作
 */
public class HomeFragment extends BaseFragment {

	private List<AppInfo> appInfos;//擷取到app的集合
	private List<String> pictures;//擷取到圖檔位址的集合

		// 當Fragment挂載的activity建立的時候調用
		@Override
		public void onActivityCreated(Bundle savedInstanceState) {
			super.onActivityCreated(savedInstanceState);
			show();
		}
	
	public View createSuccessView() {
		//使用自定義的ListView,ListView初始化的時候會初始化幾個方法
		BaseListView listView = new BaseListView(UiUtils.getContext());
		
		//建立一個Holder
		HomePictureHolder pictureHolder = new HomePictureHolder();
		pictureHolder.setData(pictures);
		//擷取到holder的view對象
		View contentView = pictureHolder.getContentView();
		//設定寬和高，友善畫圖
		contentView.setLayoutParams(new AbsListView.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
		//把holder裡面的view添加到ListView的上面
		listView.addHeaderView(contentView);
		
		listView.setAdapter(new HomeAdapter(appInfos));
		// 第二個參數 慢慢滑動的時候是否加載圖檔 false  加載   true 不加載
		//  第三個參數  飛速滑動的時候是否加載圖檔  true 不加載 
		listView.setOnScrollListener(new PauseOnScrollListener(bitmapUtils, false, true));
		bitmapUtils.configDefaultLoadingImage(R.drawable.ic_default);  // 設定如果圖檔加載中顯示的圖檔
        bitmapUtils.configDefaultLoadFailedImage(R.drawable.ic_default);// 加載失敗顯示的圖檔
		return listView;
	}
	
	private class HomeAdapter extends DefaultAdapter<AppInfo>{

		//構造函數，初始化資料
		public HomeAdapter(List<AppInfo> appInfos) {
			super(appInfos);
			// TODO Auto-generated constructor stub
		}

		@Override
		protected BaseHolder<AppInfo> getHolder() {
			// TODO Auto-generated method stub
			return new ViewHolder();
		}

		//加載更多資料下拉條的實作
		@Override
		protected List<AppInfo> onload() {
			HomeProtocol protocol = new HomeProtocol();
			List<AppInfo> data = protocol.load(appInfos.size());
			appInfos.addAll(data);
			return data;
		}

		
		
	}
	
	static class ViewHolder extends BaseHolder<AppInfo>{
		ImageView item_icon;
		TextView item_title,item_size,item_bottom;
		RatingBar item_rating;

		
		//更新界面
		@Override
		public void refreshView(AppInfo data){
			this.item_title.setText(data.getName());// 設定應用程式的名字
			String size = Formatter.formatFileSize(UiUtils.getContext(), data.getSize());
			this.item_size.setText(size);
			this.item_bottom.setText(data.getDes());
			float stars = data.getStars();
			this.item_rating.setRating(stars); // 設定ratingBar的值
			String iconUrl = data.getIconUrl(); //這個位址不全，需要加上apache位址"iconUrl": "app/com.youyuan.yyhl/icon.jpg",
			//http://127.0.0.1:8090/image?name=app/com.youyuan.yyhl/icon.jpg
			
			
			//第一個參數是顯示圖檔的控件，第二個參數是顯示圖檔的url
			bitmapUtils.display(this.item_icon, HttpHelper.URL+"image?name="+iconUrl);
			// 顯示圖檔的控件
			//bitmapUtils.display(holder.item_icon, HttpHelper.URL+"image?name="+iconUrl);
		}

		@Override
		public View initView() {
			View contentView = View.inflate(UiUtils.getContext(), R.layout.item_app, null);
			this.item_icon = (ImageView) contentView.findViewById(R.id.item_icon);
			this.item_title = (TextView) contentView.findViewById(R.id.item_title);
			this.item_size = (TextView) contentView.findViewById(R.id.item_size);
			this.item_bottom = (TextView) contentView.findViewById(R.id.item_bottom);
			this.item_rating = (RatingBar) contentView.findViewById(R.id.item_rating);
			return contentView;
		}

	}

	@Override
	public LoadResult load() {
		HomeProtocol protocol = new HomeProtocol();
		//擷取到app的資訊
		appInfos = protocol.load(0);
		pictures = protocol.getPictures();
		return checkData(appInfos);
	}
	

	
	
}

HomeProtocol.java

package com.ldw.market.protocol;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import com.ldw.market.domain.AppInfo;
import com.ldw.market.http.HttpHelper;
import com.ldw.market.http.HttpHelper.HttpResult;
import com.ldw.market.utils.FileUtils;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseStream;
import com.lidroid.xutils.http.client.HttpRequest.HttpMethod;
import com.lidroid.xutils.util.IOUtils;

public class HomeProtocol extends BaseProtocol <List<AppInfo>>{
	//banner圖的資料
	private List<String> pictures;

	//解析json資料
	public List<AppInfo> parseJson(String json) {
		List<AppInfo> appInfos = new ArrayList<AppInfo>();
		pictures=new ArrayList<String>();
		try {
			JSONObject jsonObject = new JSONObject(json);
			//擷取到中括号的内容,解析list也就是pictures的内容
			JSONArray jsonArraypic = jsonObject.getJSONArray("picture");
			for(int i = 0; i < jsonArraypic.length(); i++){
				String str = jsonArraypic.getString(i);
				System.out.println(str);
				pictures.add(str);
			}
			
			//擷取到中括号的内容,解析list也就是app的内容
			JSONArray jsonArray = jsonObject.getJSONArray("list");
			//周遊list數組,list數組裡面又是由大括号構成
			for(int i = 0; i < jsonArray.length(); i++){
				JSONObject jsonObj = jsonArray.getJSONObject(i);
				long id = jsonObj.getLong("id");
				String name = jsonObj.getString("name");
				String packageName = jsonObj.getString("packageName");
				String iconUrl = jsonObj.getString("iconUrl");
				float stars = Float.parseFloat(jsonObj.getString("stars"));
				long size = jsonObj.getLong("size");
				String downloadUrl = jsonObj.getString("downloadUrl");
				String des = jsonObj.getString("des");
				
				//構造函數，建立一個appInfo
				AppInfo appInfo = new AppInfo(id, name, packageName, iconUrl,
						stars, size, downloadUrl, des);
				//往集合中添加對象
				appInfos.add(appInfo);
			}
			return appInfos;
		} catch (JSONException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return null;
		}
		
	}
	
	//擷取到圖檔的集合
	public List<String> getPictures() {
		return pictures;
	}

	@Override
	public String getKey() {
		// TODO Auto-generated method stub
		return "home";
	}

	

	
	
}

HomePictureHolder.java

package com.ldw.market.holder;

import java.util.List;

import com.ldw.market.http.HttpHelper;
import com.ldw.market.utils.UiUtils;

import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.FrameLayout;
import android.view.ViewGroup.LayoutParams;
import android.widget.ImageView;

public class HomePictureHolder extends BaseHolder<List<String>> {

	//holder建立的時候調用下面的方法
	private ViewPager viewPager;
	private List<String> datas;
	@Override
	public View initView() {
		FrameLayout frameLayout =new FrameLayout(UiUtils.getContext());
		frameLayout.setLayoutParams(new AbsListView.LayoutParams(LayoutParams.MATCH_PARENT,240));
		viewPager=new ViewPager(UiUtils.getContext());
		//給ViewPager設定布局的參數LayoutParames
		viewPager.setLayoutParams(new FrameLayout.LayoutParams(LayoutParams.MATCH_PARENT,240));
		frameLayout.addView(viewPager);
		return frameLayout;
	}

	//holder中設定資料調用setData的掉用
	@Override
	public void refreshView(List<String> datas) {
		this.datas = datas;
		viewPager.setAdapter(new HomeAdapter());
		
	}
	class HomeAdapter extends PagerAdapter{

		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return datas.size();
		}

		@Override
		public boolean isViewFromObject(View arg0, Object arg1) {
			// TODO Auto-generated method stub
			return arg0==arg1;
		}
		
		@Override
		public void destroyItem(ViewGroup container, int position, Object object) {
			//uper.destroyItem(container, position, object);
			container.removeView((View)object);
		}

		@Override
		public Object instantiateItem(ViewGroup container, int position) {
			//顯示圖檔
			ImageView imageView=new ImageView(UiUtils.getContext());
			//初始化imageView
			bitmapUtils.display(imageView, HttpHelper.URL+"image?name="+datas.get(position));
			container.addView(imageView);  //加載的view對象
			return imageView; // 傳回的對象
		}
		
	}

}
android整理
上一篇: linux操作-centos下載下傳mysql
下一篇: CentOS下載下傳與伺服器版安裝(VMware)

繼續閱讀