使用 JSON 的自定义适配器内的服务器端值

Question

//CustomAdapter.java

public class CustomAdapter extends PagerAdapter{

Context context;
int[] imageId = {R.drawable.slider1, R.drawable.slider2};
String[] caption = { "1", "2" };

public CustomAdapter(Context context){
    this.context = context;
}

@Override
public Object instantiateItem(ViewGroup container, int position) {
    // TODO Auto-generated method stub

    LayoutInflater inflater = ((Activity)context).getLayoutInflater();

    View viewItem = inflater.inflate(R.layout.image_item, container, false);
    ImageView imageView = (ImageView) viewItem.findViewById(R.id.imageView);
    TextView textView = (TextView) viewItem.findViewById(R.id.textView1);
    imageView.setImageResource(imageId[position]);
    textView.setText(caption[position]);
    ((ViewPager)container).addView(viewItem);

    return viewItem;
}

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

@Override
public boolean isViewFromObject(View view, Object object) {
    // TODO Auto-generated method stub

    return view == ((View)object);
}


@Override
public void destroyItem(ViewGroup container, int position, Object object) {
    // TODO Auto-generated method stub
    ((ViewPager) container).removeView((View) object);
}

}

我的 json 结果是，

{
  "slider": [
  {
    "name": "Demo Event",
    "images": "uploads\/event\/demo.png",
    "location": "Ernakulam"
  },
  {
    "name": "cfghedrgyedyg",
    "images": "uploads\/event\/Array466.jpg",
    "location": "dfgred"
  },
  {
    "name": "Demo",
    "images": "uploads\/event\/Array698.jpg",
    "location": "Thodupuzha"
  },
  {
    "name": "Event",
    "images": "uploads\/event\/Array745.jpg",
    "location": "Angamaly"
  },
  {
    "name": "ghtrfhy",
    "images": "uploads\/event\/Array350.jpg",
    "location": "Thodupuzha"
  }
 ]
}

我的问题是，如何使用来自服务器的值更改 int[] imageId = {R.drawable.slider1, R.drawable.slider2}; 和 String[] caption = { "1", "2" }; 中的值。即，使用 JSON.

是否可以实现这个。我试了很多。但是没有成功。

提前致谢。

Answer 1

像这样创建一个企业entity/class

public class ImageDetails()
{
public int ImageId;
public String Caption;
}

创建此 class 作为对象的列表并填充详细信息

    List<ImageDetails> imgDetails=new ArrayList<ImageDetails>();

ImageDetails img1=new ImageDetails();
img1.ImageId=1;
img1.Caption="Caption";

更改适配器的构造函数以接受此列表

public CustomAdapter(Context context,List<ImageDetails> imageDetails){
    this.context = context;
this.ImageDetails=imageDetails;
}

终于在getview中了

TextView textView = (TextView) viewItem.findViewById(R.id.textView1);
    textView.setText(ImageDetails.get(position).Caption);

使用 JSON 的自定义适配器内的服务器端值

server side values inside customadapter using JSON

android

json

custom-adapter