Question

我知道如何将gridview中的每个单元格变成一个按钮，但这不是我所追求的。我有一个用这个适配器填充的gridview。

public class TaskAdapter extends BaseAdapter{

    private Context mContext;

    public TaskAdapter(Context c)
    {
        mContext = c;
    }

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

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return 0;
    }

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

        if(convertView == null){
            LayoutInflater inflater = ((Activity) mContext).getLayoutInflater();
            sView = inflater.inflate(R.layout.task_square, parent, false);

            TextView tView = (TextView) sView.findViewById(R.id.textView);

            tView.setText(nThumbsIds.get(position));

        }
        return sView;
    }
}

nThumbsIds充满了Strings，其内容在几乎每个版本都会有所不同。

我想添加一个按钮作为网格的最后一个元素，总是在所有字符串之后。有办法吗？

Answer 1

试试这样：

创建适配器

 public class TaskAdapter extends BaseAdapter
        {
            private Context mContext;

            public TaskAdapter(Context c)
            {
                mContext = c;
            }

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

            @Override
            public Object getItem(int position)
            {
                // TODO Auto-generated method stub
                return nThumbsIds.get(position);
            }

            @Override
            public long getItemId(int position)
            {
                // TODO Auto-generated method stub
                return position;
            }

            @Override
            public View getView(int position, View convertView, ViewGroup parent)
            {
                TextView tView =null;
                Button tBtn =null;

                LayoutInflater inflater = ((Activity) mContext).getLayoutInflater();
                convertView = inflater.inflate(R.layout.task_square, parent, false);

                 tView = (TextView) convertView.findViewById(R.id.grid_item_txv);
                 tBtn = (Button) convertView.findViewById(R.id.grid_item_btn);

                if(position < nThumbsIds.size()-1)
                {
                    tView.setText(nThumbsIds.get(position));
                    tView.setVisibility(View.VISIBLE);
                    tBtn.setVisibility(View.GONE);
                }
                else
                {
                    tBtn.setText(nThumbsIds.get(position));
                    tView.setVisibility(View.GONE);
                    tBtn.setVisibility(View.VISIBLE);
                }

                return convertView;
            }

你的网格项目布局xml：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >

    <TextView
        android:id="@+id/grid_item_txv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" 
        android:padding="20dp"
        android:layout_centerInParent="true"
        android:gravity="center"
        android:text="Smaple"/>

    <Button
        android:id="@+id/grid_item_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="20dp"
        android:gravity="center"
        android:layout_centerInParent="true"
        android:text="sample"
        android:visibility="gone" />

</RelativeLayout>

GridView在您的活动布局中：

<GridView
        android:id="@+id/test_grid"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:columnWidth="100dp"
        android:numColumns="auto_fit"
        android:stretchMode="columnWidth" >
    </GridView>

在gridview中添加按钮作为列表元素

1 个答案: