Android垂直寻呼机适配器(在寻呼机适配器之间添加不同的页面)

Question

我要求在垂直寻呼机的页面之间显示广告。例如像inshorts这样的新闻应用程序。任何方法都可以做到这一点。

用于新闻页面的数据是标题、内容和日期，我在jsonarray中获取了多个新闻的数据。我的要求是在寻呼机适配器中添加一个不同的页面(广告页面)。例句:看了5遍新闻之后。我应该得到广告页面，它与新闻页面不同

Answer 1

首先，您应该使json Array具有通告数据包括

例如:没有广告的json数组

{ "s"：真，"d"：{ "id"："203e63d7-3672-4fb7-a899-3ebd281a0e4c"，"title"："Title 1"，"description"："Description“}，{ "id"："203e63d7-3672-4fb7-a899-3ebd281a0e4c"，"title"："Title 1"，"description"："Description“}，{ "id"："203e63d7-3672-4fb7-a899-3ebd281a0e4c"，"title"："Title 1"，"description"："Description”}，{ "id"："203e63d7-3672-4fb7-a899-3ebd281a0e4c"，"title"："Title 1"，"description"："Description“}，{ "id"："203e63d7-3672-4fb7-a899-3ebd281a0e4c"，"title"："Title 1"，"description"："Description”}}

现在使用此参数创建自定义类:标题、类型、描述、advertise_title和advertise_url

List<CustomObj> list=new ArrayList<>();
for(int i=0;i<jsonArray.size,i++){
int j=i;
j++;
if(j%5==0){
list.add(new CustomObj(jsonArray.get(i).getId(),jsonArray.get(i).getTitle(),jsonArray.get(i).getDescription(),1,"Advertise Title","URL")
}else{
list.add(new CustomObj(jsonArray.get(i).getId(),jsonArray.get(i).getTitle,jsonArray.get(i).getDescription,0,"","")
}

} 

带有播发列表的json数组

{
  "s": true,
  "d": [
    {
      "id": "203e63d7-3672-4fb7-a899-3ebd281a0e4c",
      "title": "Title 1",
      "type": 0,
      "description": "Description",
      "advertise_title": "",
      "advertise_img_url": ""
    },
    {
      "id": "203e63d7-3672-4fb7-a899-3ebd281a0e4c",
      "title": "Title 1",
      "type": 0,
      "description": "Description",
      "advertise_title": "",
      "advertise_img_url": ""
    },
    {
      "id": "203e63d7-3672-4fb7-a899-3ebd281a0e4c",
      "title": "Title 1",
      "type": 0,
      "description": "Description",
      "advertise_title": "Description",
      "advertise_img_url": "https://www.pexels.com/photo/nature-red-love-romantic-67636/a.jpg"
    },
    {
      "id": "203e63d7-3672-4fb7-a899-3ebd281a0e4c",
      "title": "Title 1",
      "type": 0,
      "description": "Description",
      "advertise_title": "Description",
      "advertise_img_url": "https://www.pexels.com/photo/nature-red-love-romantic-67636/a.jpg"
    },
    {
      "id": "203e63d7-3672-4fb7-a899-3ebd281a0e4c",
      "title": "Title 1",
      "type": 1,
      "description": "Description",
      "advertise_title": "Description",
      "advertise_img_url": "https://www.pexels.com/photo/nature-red-love-romantic-67636/a.jpg"
    },
    {
      "id": "203e63d7-3672-4fb7-a899-3ebd281a0e4c",
      "title": "Title 1",
      "type": 0,
      "description": "Description",
      "advertise_title": "",
      "advertise_img_url": ""
    },
    {
      "id": "203e63d7-3672-4fb7-a899-3ebd281a0e4c",
      "title": "Title 1",
      "type": 0,
      "description": "Description",
      "advertise_title": "",
      "advertise_img_url": ""
    },
    {
      "id": "203e63d7-3672-4fb7-a899-3ebd281a0e4c",
      "title": "Title 1",
      "type": 0,
      "description": "Description",
      "advertise_title": "",
      "advertise_img_url": ""
    },
    {
      "id": "203e63d7-3672-4fb7-a899-3ebd281a0e4c",
      "title": "Title 1",
      "type": 0,
      "description": "Description",
      "advertise_title": "",
      "advertise_img_url": ""
    }
  ]
}

在ViewPagerAdapter中，

@Override
public Object instantiateItem(ViewGroup container, int position) {
 View itemView;
 if (mList.get(position).getType() == 0) {
  //for simple item 
  itemView = mLayoutInflater.inflate(R.layout.pager_news, container, false);
  ImageView imageView = (ImageView) itemView.findViewById(R.id.imageView);
  TextView text = (TextView) itemView.findViewById(R.id.text_id);
  imageView.setImageResource(mResources[position].getUrl());
  text.setText(mResources[position].getTitle());
  container.addView(itemView);
 } else {
  //for adavertise item
  itemView = mLayoutInflater.inflate(R.layout.pager_advertise, container, false);
  ImageView imageView = (ImageView) itemView.findViewById(R.id.imageView);
  imageView.setImageResource(mResources[position]);
  container.addView(itemView);
 }
 return itemView;
}

Answer 2

您可以只创建两种类型的片段，一种是您的主要片段，例如新闻片段，另一种是广告片段，用于显示广告。

根据您的逻辑，将这些片段添加到list中，然后再将其传递给pageradapter。

    private ArrayList<Fragment> fragmentList = new ArrayList<>();
    fragmentList.add(NewsFragment.newInstance());
    fragmentList.add(NewsFragment.newInstance());
    fragmentList.add(NewsFragment.newInstance());
    fragmentList.add(NewsFragment.newInstance());
    fragmentList.add(NewsFragment.newInstance());
    fragmentList.add(AdFragment.newInstance());

    NewsPagerAdapter newsPagerdapter = new NewsPagerAdapter(getSupportFragmentManager(), fragmentList);
    viewPager.setAdapter(newsPagerdapter);

你的适配器会是这样的-

public class NewsPagerAdapter extends FragmentStatePagerAdapter {
private ArrayList<Fragment> fragmentList = new ArrayList<>();


public NewsPagerAdapter(FragmentManager fm, ArrayList<Fragment> fragmentList) {
    super(fm);
    this.fragmentList=fragmentList;

}


@Override
public Fragment getItem(int position) {
    return fragmentList.get(position);
}

@Override
public int getCount() {
    return fragmentList.size();
}
}