java - Android 网格布局

Question

我正在开发一个 Android 应用程序，但我的 GUI (The GridLayout) 有问题。

我想知道是否可以选择包含视图的列，因为我必须在循环中填充前两列，然后再填充其他列。

Answer 1

上面的示例是一个显示了一些图片(mThumbIds)的 gridView。

通过 xml 创建一个 gridView。

然后像这样在您的代码中获取它：

GridView gv = (GridView) findViewById(R.id.gridView1);

然后创建一个图像 Adapter，并将其附加到您的GridView：

imageAdapter = new ImageAdapter(this);
gv.setAdapter(imageAdapter);

这是您的 ImageAdapter 的代码：

为网格中的每个项目执行getView 方法。

public class ImageAdapter extends BaseAdapter {
    private Context mContext;

    public ImageAdapter(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;
        if (convertView == null) {  // if it's not recycled, initialize some attributes
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setPadding(8, 8, 8, 8);
        } else {
            imageView = (ImageView) convertView;
        }

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

    // references to our images
    private Integer[] mThumbIds = {
            R.drawable.sample_2, R.drawable.sample_3,
            R.drawable.sample_4, R.drawable.sample_5,
            R.drawable.sample_6, R.drawable.sample_7,
            R.drawable.sample_0, R.drawable.sample_1,
            R.drawable.sample_2, R.drawable.sample_3,
            R.drawable.sample_4, R.drawable.sample_5,
            R.drawable.sample_6, R.drawable.sample_7,
            R.drawable.sample_0, R.drawable.sample_1,
            R.drawable.sample_2, R.drawable.sample_3,
            R.drawable.sample_4, R.drawable.sample_5,
            R.drawable.sample_6, R.drawable.sample_7
    };
}