Question

我想问一下，如果我想在运行时添加图像我该怎么办？...我的意思是我有一个国家列表，其中给出了名称和标志。我创建列表（并设置在适配器中）但我不知道如何相对于其国家/地区添加图像

enter code here
package com.example.hp.myapplication;

import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;

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

public class MainActivity extends AppCompatActivity {
    private ListView lvProduct;
    private ProductListAdapter adapter;
    private List<Country> mProductList;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        lvProduct = (ListView)findViewById(R.id.listview_product);

        mProductList = new ArrayList<>();

        Uri path = Uri.parse("android.resource://"+this.getPackageName ()  + R.drawable.afghanistan);
        String Path = path.toString();

        Uri path1 = Uri.parse("android.resource://"+this.getPackageName ()  + R.drawable.portugal);
        String Path1 = path1.toString();

        //Add sample data for list
        //We can get data from DB, webservice here
        mProductList.add(new Country(1, "iPhone4", 200, "Apple iPhone4 16GB",Path));
        mProductList.add(new Country(3, "iPhone4S", 250, "Apple iPhone4S 16GB",Path1));
        mProductList.add(new Country(4, "iPhone5", 300, "Apple iPhone5 16GB",Path));
        mProductList.add(new Country(5, "iPhone5S", 350, "Apple iPhone5S 16GB",Path1));
        mProductList.add(new Country(6, "iPhone6", 400, "Apple iPhone6 16GB",Path));
        mProductList.add(new Country(7, "iPhone6S", 450, "Apple iPhone6S 16GB",Path1));
        mProductList.add(new Country(8, "iPhone7", 500, "Apple iPhone7 16GB",Path));
        mProductList.add(new Country(9, "iPhone7S", 600, "Apple iPhon7S 16GB",Path1));
        mProductList.add(new Country(10, "iPhone8", 700, "Apple iPhone8 16GB",Path));
        mProductList.add(new Country(11, "iPhone8S", 800, "Apple iPhone8S 16GB",Path1));

        //Init adapter
        adapter = new ProductListAdapter(getApplicationContext(), mProductList);
        lvProduct.setAdapter(adapter);

        lvProduct.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                //Do something
                //Ex: display msg with product id get from view.getTag
                Toast.makeText(getApplicationContext(), "Clicked product id =" + view.getTag(), Toast.LENGTH_SHORT).show();
            }
        });
    }
}
enter code here
package com.example.hp.myapplication;

/**
 * Created by HP on 16-Feb-17.
 */

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.List;

public class ProductListAdapter extends BaseAdapter {

    private Context mContext;
    private LayoutInflater mInflater;
    private List<Country> mProductList;

    //Constructor

    public ProductListAdapter(Context mContext, List<Country> mProductList) {
        this.mContext = mContext;
//        mProductList=new ArrayList<Country>();
        mInflater = LayoutInflater.from(mContext);
        this.mProductList = mProductList;
    }

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

    @Override
    public Object getItem(int position) {
        return mProductList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent)
    {

        ViewHolder holder;
        Country p = mProductList.get(position);
        if (convertView == null) {
            convertView = mInflater.inflate(R.layout.list, null);
            holder = new ViewHolder();
            holder.name = (TextView) convertView.findViewById(R.id.tv_name);
            holder.price= (TextView) convertView.findViewById(R.id.tv_price);
            holder.Description= (TextView) convertView.findViewById(R.id.tv_description);
            holder.img= (ImageView) convertView.findViewById(R.id.IMAGE);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        int number=p.getPrice();
        String numberAsString = Integer.toString(number);


        holder.name.setText(p.getName());
        holder.price.setText(numberAsString);
        holder.Description.setText(p.getDescription());
        holder.img.setImageResource(R.drawable.spain);
        return convertView;

    }
    static class ViewHolder
    {
        TextView name;
        TextView price;
        TextView Description;
        ImageView img;
    }

}
enter code here
package com.example.hp.myapplication;

/**
 * Created by HP on 16-Feb-17.
 */
public class Country {
    private int id;
    private String name;
    private int price;
    private String description;
    private String ImageUri;


    //Constructor

    public Country(int id, String name, int price, String description,String uri)
    {
        this.id = id;
        this.name = name;
        this.price = price;
        this.description = description;
        this.ImageUri=uri;
    }

    //Setter, getter

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getPrice() {
        return price;
    }

    public void setPrice(int price) {
        this.price = price;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getImage()
    {
        return ImageUri;
    }

}

Answer 1

简单的解决方案可能是将资源ID添加到您的Country类：

mProductList.add(new Country(11, "iPhone8S", 800, "Apple iPhone8S 16GB",R.drawable.portugal));

public Country(int id, String name, int price, String description,id resId){
    ...
    this.resId=resId;
}

public String getResId(){
    return resId;
}

 @Override
public View getView(int position, View convertView, ViewGroup parent){

    ViewHolder holder;
    Country p = mProductList.get(position);
    ....
    holder.img.setImageResource(p.getResId);
    return convertView;
}

Answer 2

正如FierceFox所解释的那样，您为每个项目设置了以下图像：

echo "<div>".$this->formLabel($form->get('name'))."</div>"; echo "<div>".$this->formInput($form->get('name'))."</div>";

您想要的是设置国家/地区的图像。

holder.img.setImageResource(R.drawable.spain);

您需要在此处完全删除URI：

holder.img.setImageResource(country.getDrawableId());

并将其替换为drawable id：

mProductList.add(new Country(1, "iPhone4", 200, "Apple iPhone4 16GB",Path));

我不知道你要对这个URI做什么，因为你可以看到mProductList.add(new Country(1, "iPhone4", 200, "Apple iPhone4 16GB", R.drawable.portugal));需要setImageResource，这意味着你应该只给它一个可绘制的资源ID，不需要存储任何URI。

Answer 3

我在这里讲基础知识的步骤。

首先，您需要将所有png / jpg文件放入drawable中位于主项目中res文件夹下的文件夹层次结构。

现在在您的Country对象中，只需为资源ID添加一个参数，如下所示。

MyCountryClass {

// user crud controller

    public function getUserRlatedPosts($user_id)
    {

        $crud = new CrudPanel();
        $crud->addClause('where', 'user_id', '=', $user_id);
        $crud->setModel("post");
        $crud->setEntityNameStrings("post","posts");
        $crud->enableAjaxTable();

        $this->data['crud'] = $crud;
        $this->data['title'] = ucfirst($this->crud->entity_name_plural);
        if (! $this->data['crud']->ajaxTable()) {
            $this->data['entries'] = $this->data['crud']->getEntries();
        }
        return view('crud::list', $this->data);
    }

现在在适配器上，这样做。

int countryCode; 
String countryName;
int countryResId;

}

现在在活动类中，只需准备好您的列表并使用列表设置适配器。

如何在android中运行时设置Image

3 个答案: