content: package com.sqh.market.activity;
  
  import android.content.Intent;
  import android.graphics.Color;
  import android.graphics.PorterDuff;
  import android.graphics.drawable.Drawable;
  import android.os.Bundle;
  import android.support.annotation.Nullable;
  import android.support.v4.app.Fragment;
  import android.support.v4.app.FragmentManager;
  import android.support.v4.app.FragmentPagerAdapter;
  import android.support.v4.content.ContextCompat;
  import android.support.v4.view.ViewPager;
  import android.support.v7.app.AppCompatActivity;
  import android.support.v7.widget.Toolbar;
  import android.view.View;
  
  import com.sqh.market.R;
  import com.sqh.market.fragments.AllCommodityFragment;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class SearchActivity extends AppCompatActivity {
  
      private Toolbar mToolbar;
      private ViewPager mViewPager;
  
  
      private String searchContent;
  
      @Override
      protected void onCreate(@Nullable Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_search);
  
          //设置从别的页面传过来的搜索内容
          Intent intent = getIntent();
          searchContent = intent.getStringExtra("content");
  
          //绑定控件
          init();
  
          //初始化数据
          initData();
  
          //给Toolbar添加返回按钮
          mToolbar.setTitle("商品搜索");//设置ToolBar的标题
          mToolbar.setTitleTextColor(Color.WHITE);
          //返回按钮颜色显示不正常时,以下三行是修改回退按钮为白色的逻辑
          Drawable upArrow = ContextCompat.getDrawable(SearchActivity.this, R.drawable.abc_ic_ab_back_material);
          upArrow.setColorFilter(getResources().getColor(R.color.white), PorterDuff.Mode.SRC_ATOP);
          mToolbar.setNavigationIcon(upArrow);
          mToolbar.setNavigationOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View v) {
                  //返回按鈕点击事件，关闭当前activity
                  finish();
              }
          });
  
  
      }
  
  
      /**
       * 初始化控件绑定
       */
      public void init() {
          mToolbar = findViewById(R.id.toolbar);
          mViewPager = findViewById(R.id.view_pager_menu);
      }
  
      /**
       * 初始化fragment
       */
      public void initData() {
          //viewpager初始化、监听设置
          mViewPager.addOnPageChangeListener(mPageChangeListener);
          mViewPager.setOffscreenPageLimit(1);
  
          List<Fragment> fragments = new ArrayList<>(1);
          AllCommodityFragment page = new AllCommodityFragment();
          page.setSearchContent(searchContent);
          fragments.add(page);
          PagerAdapter pagerAdapter = new PagerAdapter(getSupportFragmentManager(), fragments);
          mViewPager.setAdapter(pagerAdapter);
  
  
      }
  
  
      /**
       * 设置viewPage样式
       */
      private ViewPager.SimpleOnPageChangeListener mPageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
          @Override
          public void onPageSelected(int position) {
              switch (position) {
                  case 0: {
                      mViewPager.setBackgroundColor(ContextCompat.getColor(SearchActivity.this, R.color.white));
                      break;
                  }
                  case 1: {
                      mViewPager.setBackgroundColor(ContextCompat.getColor(SearchActivity.this, R.color.white));
                      break;
                  }
  
  
              }
          }
      };
  
      /**
       * viewpager适配器
       */
      private static class PagerAdapter extends FragmentPagerAdapter {
  
          private List<Fragment> fragments;
  
          public PagerAdapter(FragmentManager fragmentManager, List<Fragment> fragments) {
              super(fragmentManager);
              this.fragments = fragments;
          }
  
          @Override
          public int getCount() {
              return fragments == null ? 0 : fragments.size();
          }
  
          @Override
          public Fragment getItem(int position) {
              return fragments.get(position);
          }
      }
  
  
  }
  