如何在Android的编程方式创建GridView的图片库？ [英] How to create GridView image gallery programmatically in android?

问题描述

我想通过程序生成的3x3 GridView控件来显示图像。我想设置每个项目的高度和宽度，通过获取屏幕尺寸。像：

I want to create 3x3 gridview programmatically for displaying images. And I want to set each item height and width by getting screen dimensions. Like:

DisplayMetrics metrics = context.getResources().getDisplayMetrics();
int width = metrics.widthPixels;
int height = metrics.heightPixels;

然后每个项目宽度=屏幕宽度/ 3;

请帮助我的人或者一些链接，以供参考。

Please someone help me or some link for reference.

推荐答案

这是如何编程创建GridView控件，

This is how you can create gridview programmatically,

    GridView grid = new GridView(this);
    grid.setId(ViewIdentification.getId());
    grid.setLayoutParams(new GridView.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
    grid.setBackgroundColor(Color.WHITE);
    grid.setNumColumns(3);
    grid.setColumnWidth(GridView.AUTO_FIT);
    grid.setVerticalSpacing(5);
    grid.setHorizontalSpacing(5);
    grid.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);

添加上述观点来布局。在这里，你可以在显示器的高度和宽度。

Add the above view to your layout. And here you can get the height and width of the display.

DisplayMetrics displaymetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay()
            .getMetrics(displaymetrics);
int width = displaymetrics.widthPixels;
int height = displaymetrics.heightPixels;

这里是适配器类：

And here is the adapter class :

public class ImageAdapter extends BaseAdapter {

    private Context mContext;
    private Bitmap[]mis_fotos;

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

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

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

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

    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        if (convertView == null) {
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(width/3, height/3));
            imageView.setScaleType(ImageView.setScaleType(ScaleType.FIT_XY));
            imageView.setPadding(0, 0, 0, 0);
        } else {
            imageView = (ImageView) convertView;
        }
        imageView.setImageBitmap(mis_fotos[position]);
        return imageView;
    }
}

那么，这是高达你，如果你是通过动态的URL，相应地更改您的适配器。 设置你的适配器以你的GridView。 让我知道，如果你有任何问题。

Then, It's upto you, If you are passing dynamic URL, change your adapter accordingly. set your adapter to your gridview. Let me know if you have any issues.

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