Question

我正在尝试使用this official example做某种GridView，我不知道如何在图片下方添加一些文字。我为适配器尝试了这个代码，但它无法正常工作：

public class ImageAdapterForGridView extends BaseAdapter {

    private Context mContext;

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

    public int getCount() {
        return mThumbIds.length;
    }

    public Object getItem(int position) {
        return null;
    }

    public long getItemId(int position) {
        return 0;
    }

    // create a new ImageView for each item referenced by the Adapter
    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        TextView textView = null;
        if (convertView == null) {  // if it's not recycled, initialize some attributes

            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(250, 250));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setPadding(8, 8, 8, 8);
            textView = new TextView(mContext);
            textView.setLayoutParams(new GridView.LayoutParams(100, 100));
            textView.setPadding(8,8,8,8);
        } else {
            imageView = (ImageView) convertView;
            //textView = (TextView) convertView;
        }

        imageView.setImageResource(mThumbIds[position]);
        textView.setText(mThumbTexts[position]);
        return imageView;
    }

  /*  public TextView getTextView(int position, TextView convertView, ViewGroup parent){
        TextView textView;
        if (convertView == null) {  // if it's not recycled, initialize some attributes
            textView = new TextView(mContext);
            textView.setLayoutParams(new GridView.LayoutParams(100, 100));
            textView.setPadding(8,8,8,8);
        } else {
            textView = convertView;
        }
        textView.setText(mThumbTexts[position]);
        return textView;
    }*/

    // references to our images
    private Integer[] mThumbIds = {
            R.drawable.ic_facebook, R.drawable.ic_flickr,
            R.drawable.ic_gmail, R.drawable.ic_linkedin,
            R.drawable.ic_picasa, R.drawable.ic_myspace,
            R.drawable.ic_rss, R.drawable.ic_skype,
            R.drawable.ic_tuenti, R.drawable.ic_twitter,
            R.drawable.ic_windowslive, R.drawable.ic_vimeo,
            R.drawable.ic_yahoo, R.drawable.otro_32,
    };

    private String[] mThumbTexts = {
            "Facebook", "Flickr", "Gmail", "LinkedIn", "Picasa", "Myspace", "RSS", "Skype", "Tuenti",
            "Twitter", "WindowsLive", "Vimeo", "Yahoo", "Otros"
    };
}

你知道我怎么能像添加imageView一样添加一些TextView？

非常感谢你的帮助:)。

Answer 1

在getView方法中，您将imageView尝试将ImageView和TextView添加到LinearLayout并返回该布局。

LinearLayout layout = new LinearLayout(this);
layout.setOrientation(LinearLayout.VERTICAL);
...
layout.addView(imageView);
layout.addView(textView);
...
return layout;

Answer 2

如果您只想要带有标签的图像，您可以选择复合绘图。在Android中，textview可以具有与之关联的图像。您可以通过XML中的drawableTop/Left/Right/Bottom或以编程方式setCompoundDrawables来实现此目的。请查看我对此问题的回答，详细了解如何执行此操作：https://stackoverflow.com/a/26959558/1003528以及gridview的实用示例。

如何在Android中向GridView添加文本

2 个答案: