[英]How to set Retrofit response body data in Listview
在Daata函數中,嘗試從服務器獲取數據。 已成功獲取,但無法在ArrayList中設置數據
List<FlowerListModel>flowerListModels=new ArrayList<>();
因為我想設置在FlowerAdapter flowerListModels數據並顯示在列表視圖
public void Daata() {
Call<List<FlowerListData>>listCall=apiInterface.getflowers();
listCall.enqueue(new Callback<List<FlowerListData>>() {
@Override
public void onResponse(Call<List<FlowerListData>> call, Response<List<FlowerListData>> response) {
Log.d("DataCheck",new Gson().toJson(response.body()));
List<FlowerListModel>flowerListModels=new ArrayList<>();
FlowerAdapter flowerAdapter = new FlowerAdapter(getApplicationContext(),flowerListModels);
listView.setAdapter(flowerAdapter);
}
@Override
public void onFailure(Call<List<FlowerListData>> call, Throwable t) {
Toast.makeText(getApplicationContext(), "error", Toast.LENGTH_SHORT).show();
}
});
}
這是FlowerListModel類
package bdservers.com.schoolmanagement.Model;
public class FlowerListModel {
private String category;
private String instructions;
private String photo;
private String name;
private String price;
public FlowerListModel(){}
public FlowerListModel(String category, String instructions, String photo, String name,String price){
this.category=category;
this.instructions=instructions;
this.photo=photo;
this.name=name;
this.price=price;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getInstructions() {
return instructions;
}
public void setInstructions(String instructions) {
this.instructions = instructions;
}
public String getPhoto() {
return photo;
}
public void setPhoto(String photo) {
this.photo = photo;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
}
您正在將空ArrayList
設置為適配器,我已高亮顯示了發生錯誤的行以及所需的正確行
public void Daata() {
Call<List<FlowerListData>>listCall=apiInterface.getflowers();
listCall.enqueue(new Callback<List<FlowerListData>>() {
@Override
public void onResponse(Call<List<FlowerListData>> call, Response<List<FlowerListData>> response) {
Log.d("DataCheck",new Gson().toJson(response.body()));
/**
* You are setting this empty list to adapter
*List<FlowerListModel>flowerListModels=new ArrayList<>();
*/
List<FlowerListModel> flowerListModels = new ArrayList<>();
flowerListModels = response.body();
FlowerAdapter flowerAdapter = new FlowerAdapter(getApplicationContext(),flowerListModels);
listView.setAdapter(flowerAdapter);
}
@Override
public void onFailure(Call<List<FlowerListData>> call, Throwable t) {
Toast.makeText(getApplicationContext(), "error", Toast.LENGTH_SHORT).show();
}
});
}
您將在此處創建新的空List
: List<FlowerListModel>flowerListModels=new ArrayList<>();
您可以嘗試如下操作:
@Override
public void onResponse(Call<List<FlowerListData>> call, Response<List<FlowerListData>> response) {
Log.d("DataCheck",new Gson().toJson(response.body()));
FlowerAdapter flowerAdapter = new FlowerAdapter(getApplicationContext(),response.body());
listView.setAdapter(flowerAdapter);
}
像這樣創建BaseResponse模型
public class BaseResponse {
@SerializedName("data")
private List<Object> alObjects;
public BaseResponse(List<Object> alObjects) {
this.alObjects = alObjects;
}
public List<Object> getAlObjects() {
return alObjects;
}
public void setAlObjects(List<Object> alObjects) {
this.alObjects = alObjects;
}
}
然后從服務器獲取數據
@POST(Constants.URL_API_DATA)
BaseResponse executeBaseResponse(@Body String mData);
干杯!!
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