ActionBar+Fragment

最新推荐文章于 2021-05-28 17:53:25 发布

原创最新推荐文章于 2021-05-28 17:53:25 发布 · 342 阅读

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CC 4.0 BY-SA版权

本文介绍了一个使用Android平台实现的漫画应用程序中的分类加载功能。该应用通过HTTP请求获取漫画类别数据，并利用Gson进行JSON解析，将数据填充到ActionBar的Tab中，实现不同类别间的页面切换。

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package com.example.manhua;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import com.example.manhua.adapter.FenBaseAdapter;
import com.example.manhua.frag.Fragment1;
import com.example.manhua.frag.Fragment2;
import com.example.manhua.frag.Fragment3;
import com.example.manhua.frag.Fragment4;
import com.example.manhua.jie.Fen;
import com.google.gson.Gson;

import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.annotation.SuppressLint;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.ActionBar.TabListener;
import android.app.Activity;
import android.app.FragmentTransaction;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ListView;

@SuppressLint("NewApi")
public class FenActivity extends FragmentActivity implements TabListener{


   private String path;
   private ActionBar bar;
   private FragmentManager manager;


   Handler handler=new Handler(){


       public void handleMessage(android.os.Message msg) {

           if(msg.what==1){
               String json=(String) msg.obj;

               Gson gson=new Gson();
               Fen fen = gson.fromJson(json, Fen.class);

               ArrayList<String> list = fen.result;
               System.out.println("少年漫画=="+list.get(0));
               System.out.println("1=="+list.get(1));
               System.out.println("1=="+list.get(2));
               bar.addTab(bar.newTab().setText(list.get(0)).setTabListener(FenActivity.this));
               bar.addTab(bar.newTab().setText(list.get(1)).setTabListener(FenActivity.this));
               bar.addTab(bar.newTab().setText(list.get(2)).setTabListener(FenActivity.this));
               bar.addTab(bar.newTab().setText(list.get(3)).setTabListener(FenActivity.this));

           }


       };


   };




   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_fen);

       bar = getActionBar();
       //设置横向排列
       bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

       path = "http://japi.juhe.cn/comic/category?key=c13e691879cbfd24bee66c909f340d48";
       manager = getSupportFragmentManager();

       StreamUtils.jieXi(path, handler);

   }

   @Override
   public void onTabReselected(Tab tab, FragmentTransaction ft) {
       // TODO Auto-generated method stub

   }

   @Override
   public void onTabSelected(Tab tab, FragmentTransaction ft) {
       // TODO Auto-generated method stub
       android.support.v4.app.FragmentTransaction bt = manager.beginTransaction();

       switch(tab.getPosition()){

       case 0:
           bt.replace(R.id.layout, new Fragment1() , "f1");
           break;
       case 1:
           bt.replace(R.id.layout, new Fragment2() , "f1");
           break;
       case 2:
           bt.replace(R.id.layout, new Fragment3() , "f1");
           break;
       case 3:
           bt.replace(R.id.layout, new Fragment4() , "f1");
           break;
       }

       bt.commit(); //提交

   }

   @Override
   public void onTabUnselected(Tab tab, FragmentTransaction ft) {
       // TODO Auto-generated method stub

   }




}