在自定义适配器中为listView中的每个项目添加按钮

Question

I'm trying to get a listView to have a button that corresponds to each item on the listView. For example, if I have a product in the list, i want to click the button and display the information for that specific product when i click the button. How can i add an on click listener in the adapter for my button so that it works according to each item in the listview?

This is my custom array adapter.

public class MyAdapter extends BaseAdapter {
private Context mContext;
private List<Bean> mList;

public MyAdapter(Context context,List<Bean> list){
    mContext=context;
    mList=list;
}

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

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

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

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder;
    //use convertView recycle
    if(convertView==null){
        holder=new ViewHolder();
        convertView = LayoutInflater.from(mContext).inflate(R.layout.content_orders, parent, false);
        holder.textView= (TextView) convertView.findViewById(R.id.textView2);
        holder.imageView= (ImageView) convertView.findViewById(R.id.imageView2);
        convertView.setTag(holder);
    }else{
        holder = (ViewHolder) convertView.getTag();
    }

    //set text and url
    holder.textView.setText(mList.get(position).getText());
    Picasso.with(mContext).load(mList.get(position).getUrl()).resize(500,500).into(holder.imageView);

    return convertView;
}

class ViewHolder{
    TextView textView;
    ImageView imageView;

}
}

And this is my Button

    <Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Information"
    android:id="@+id/button5"
    android:layout_below="@+id/button4"
    android:layout_alignRight="@+id/button4"
    android:layout_alignEnd="@+id/button4"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true" />

Answer 1

Put the button view into the your row layout with the Textview and ImageView.

    @Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder;
    //use convertView recycle
    if(convertView==null){
        holder=new ViewHolder();
        convertView = LayoutInflater.from(mContext).inflate(R.layout.content_orders, parent, false);
        holder.textView= (TextView) convertView.findViewById(R.id.textView2);
        holder.imageView= (ImageView) convertView.findViewById(R.id.imageView2);
        convertView.setTag(holder);
    }else{
        holder = (ViewHolder) convertView.getTag();
    }
holder.clickableButton.setOnClickListener(new OnClickListener() {  

            @Override  
            public void onClick(View v) {  
               //Code goes here

            }  
        });  

    //set text and url
    holder.textView.setText(mList.get(position).getText());
    Picasso.with(mContext).load(mList.get(position).getUrl()).resize(500,500).into(holder.imageView);

    return convertView;
}

Answer 2

you can add the click listener to the button in your getView() method. Then you can use references to 'holder' to customize what ever list item specific action you want.

Answer 3

If button xml code that you provided is inside content_orders layout. Then the code should be like this

public class MyAdapter extends BaseAdapter {
private Context mContext;
private List<Bean> mList;

public MyAdapter(Context context,List<Bean> list){
    mContext=context;
    mList=list;
    }

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

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

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

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder;
    //use convertView recycle
    if(convertView==null){
    holder=new ViewHolder();
    convertView =   LayoutInflater.from(mContext).inflate(R.layout.content_orders, parent, false);
    holder.textView= (TextView) convertView.findViewById(R.id.textView2);
    holder.imageView= (ImageView) convertView.findViewById(R.id.imageView2);
holder.btn= (Button) convertView.findViewById(R.id.button5);
    convertView.setTag(holder);
}else{
    holder = (ViewHolder) convertView.getTag();
}

//set text and url
holder.textView.setText(mList.get(position).getText());
Picasso.with(mContext).load(mList.get(position).getUrl()).resize(500,500).into(holder.imageView);

holder.btn.setOnClickListener(new View.OnClickListener() {

   @Override
   public void onClick(View v) {
    // do something 
Toast.makeText(mContext,String.valueOf(position),Toast.LENGTH_SHORT).show();
    }
});

    return convertView;
}

class ViewHolder{
    TextView textView;
    ImageView imageView;
    Button btn;

}
}