Question

我有一个使用此自定义适配器的gridView：

package com.example.awesomefilebuilderwidget;

IMPORTS

public class GridViewAdapter extends BaseAdapter {
private Context Context;

// Keep all Images in array list
public ArrayList<Integer> drawables = new ArrayList<Integer>();

CheckBox mCheckBox=null;

// Constructor
public GridViewAdapter(Context c){
    Context = c;
    Log.d("GridViewAdapter", "Constructor is set");

    drawables.add(R.drawable.add_button);
    Log.d("GridViewAdapter", "add_button added");

    drawables.add(R.drawable.pattern1);
    Log.d("GridViewAdapter", "pattern1 added");

    drawables.add(R.drawable.pattern2);
    Log.d("GridViewAdapter", "pattern2 added");

    drawables.add(R.drawable.trashcan);
    Log.d("GridViewAdapter", "trashcan added");

    drawables.add(R.drawable.ic_launcher);
    Log.d("GridViewAdapter", "ic_launcher added");
}

public void setCheckBox(CheckBox checkbox){
    mCheckBox=checkbox;
}

@Override
// How many items are in the data set represented by this Adapter
public int getCount() {
    return drawables.size();
}

@Override
// Get the data item associated with the specified position in the
// data set
public Object getItem(int position) {
    return drawables.get(position);
}

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

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    // Try to reuse the views
    ImageView view = (ImageView) convertView;
    boolean checked = (mCheckBox==null)?false:(((CheckBox)  mCheckBox).isChecked());
    // if convert view is null then create a new instance else reuse it
    if (view == null) {
        view = new ImageView(Context);
        Log.d("GridViewAdapter", "new imageView added");
        view.setId(R.id.iconImageView_id);
    }
    view.setImageResource(drawables.get(position));
    view.setScaleType(ImageView.ScaleType.CENTER_CROP);
    view.setLayoutParams(new android.widget.GridView.LayoutParams(70, 70));
    view.setTag(String.valueOf(position));
    return view;
}

}

我希望能够将onItemClick侦听器设置为构造函数中创建的其中一个图像，特别是add_button。我从环顾四周了解到我需要在我的适配器的getView（）方法中执行此操作，但我不太确定如何操作。我已经尝试创建一个单独的imageView，然后在gridView之外添加add_button图像，但这只会引起我的探测，所以我决定在实际的gridView中进行。我怎么能这样做？

我的活动中也有这个：

android.widget.GridView gridView = (android.widget.GridView) findViewById(R.id.GRIDVIEW1);

    // Instance of Adapter Class
    GridViewAdapter mGridViewAdapter= new GridViewAdapter(this);
    gridView.setAdapter(mGridViewAdapter);
    CheckBox mCheckBox = (CheckBox) findViewById(R.id.addCheckbox);
    mGridViewAdapter.setCheckBox(mCheckBox);

   gridView.setOnItemClickListener(this);

如果我这样做，我该如何设置它以便OnItemClickListener只对add_button imageView执行某个操作？

Answer 1

在OnItemClickListener中，放置一个if语句来检查单击的项是否为add_button。如果是，请采取行动。

onItem单击gridView适配器项

1 个答案: