SearchActivity.java

package com.bob.digcsdn;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.bob.digcsdn.adapters.BlogListAdapter;
import com.bob.digcsdn.models.BlogItem;
import com.bob.digcsdn.interfaces.JsonCallBackListener;
import com.bob.digcsdn.utils.Constants;
import com.bob.digcsdn.utils.JsoupUtil;
import com.bob.digcsdn.utils.LogUtil;
import com.bob.digcsdn.utils.UrlUtil;
import com.bob.digcsdn.utils.VolleyUtil;

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

/**
 * Created by bob on 15-6-18.
 */
public class SearchActivity extends BaseActivity {

    private ProgressBar progressBar;//进度条预览

    private ListView blogListView;  //具有上拉加载的ListView
    private BlogListAdapter adapter; //数据适配器
    private List<BlogItem>allList;
    private String blogTitle;//被查询的博客标题

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.search_blog);
        init();
        initWidget();
        if (allList.size()> 0){
            adapter.setList(search(blogTitle));
            adapter.notifyDataSetChanged();
            progressBar.setVisibility(View.INVISIBLE);
        }else executeTask(UrlUtil.getBlogListURL(Constants.DEF_ARTICLE_TYPE.HOME, Constants.ALL_BLOG_LIST));//当然是第一页
    }

    private void init() {
        adapter = new BlogListAdapter(this);
        allList = new ArrayList<>();
        blogTitle = getIntent().getExtras().getString("query");
        LogUtil.i("init", "coming");
    }

    private void initWidget() {
        progressBar = (ProgressBar) findViewById(R.id.pro_common_content);
        getSupportActionBar().setTitle(" 搜索 "+blogTitle);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        blogListView = (ListView) findViewById(R.id.list_search_view);
        blogListView.setAdapter(adapter);

        blogListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

                BlogItem blogItem = (BlogItem) adapter.getItem(position);//获取博客对象
                Intent intent = new Intent(SearchActivity.this, BlogDetailActivity.class);
                intent.putExtra("blogLink", blogItem.getLink());
                intent.putExtra("blogTitle", blogItem.getTitle());
                startActivity(intent);

                /**
                 * 用于设置当前活动出现或者退出的动画，放在startActivity和finish之后
                 */
                overridePendingTransition(R.anim.push_left_in, R.anim.push_no);
            }
        });
    }

    public List<BlogItem> search(String title) {//查询就先这么写了
        List<BlogItem> result = new ArrayList<>();
        for (BlogItem item : allList) {
            if ((item.getTitle().toUpperCase()).contains(title.toUpperCase()))//全部使用大写进行比较查询
                result.add(item);
        }
        if (result.size() == 0)
            Toast.makeText(this, "无内容", Toast.LENGTH_SHORT).show();
        return result;
    }


    public void executeTask(String url) {

        StringRequest htmlRequest = new StringRequest(url, new Response.Listener<String>() {
            @Override
            public void onResponse(String html) {//主线程里
                progressBar.setVisibility(View.INVISIBLE);

                JsoupUtil.getBlogItemList(Constants.DEF_ARTICLE_TYPE.HOME, html, new JsonCallBackListener() {
                    @Override
                    public synchronized void onFinish(final List<BlogItem> list) {//子线程里

                        /**
                         * 在主页中加载超页之后，不再分页显示,分页的时候按照每页15条显示
                         */
                        LogUtil.i("加载的数量", list.size() + "");
                        allList.addAll(list);

                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                adapter.setList(search(blogTitle));
                                adapter.notifyDataSetChanged();
                            }
                        });
                    }
                });//Jsoup解析html
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError volleyError) {
                volleyError.printStackTrace();
                Toast.makeText(SearchActivity.this, "网络信号不佳", Toast.LENGTH_SHORT).show();
                progressBar.setVisibility(View.INVISIBLE);
            }
        });

        VolleyUtil.getQueue().add(htmlRequest);//队列里肯定是按顺序执行的，也不用担心多线程访问的线程安全问题
    }


    @Override
    public boolean onOptionsItemSelected(final MenuItem item) {

        switch (item.getItemId()) {
            case android.R.id.home:
                finish();
                break;
        }
        return true;
    }
}