android 以编程方式均匀分布 imageview android

Question

我试图在屏幕上均匀分布图像视图，图像视图大小不同，在下面的示例中我想要 12 个图像视图，每行 4 个，3 行。我遇到的问题是，只是向左聚集在一起，每次尝试填充整行时，它们都会伸展开，但我想要在图像视图之间使用 space。我想以编程方式执行此操作，因为我想选择在屏幕上放置多少个图像视图。我有一个只包含一个 linearLayout 的布局，我想在其中放置图像视图：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/treasureLinearLayout"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff134BE8"
android:padding="10dp"
/>

添加图像视图的代码在片段中：

    final float scale = getContext().getResources().getDisplayMetrics().density;
    int dps = 90;
    LinearLayout layout = (LinearLayout) view.findViewById(R.id.treasureLinearLayout);
    layout.setOrientation(LinearLayout.VERTICAL);  //Can also be done in xml by android:orientation="vertical"

    for (int i = 0; i < 3; i++) {
        LinearLayout row = new LinearLayout(getContext());

        row.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
        LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT, 1.0f);
        row.setLayoutParams(param);
        for (int j = 0; j < 4; j++) {
            dps -= 5;

            ImageView imageView = new ImageView(getContext());
            imageView.setImageResource(R.drawable.ic_menu_map);
            imageView.setBackgroundResource(R.drawable.circle);

            imageView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT));

            int pixels = (int) (dps * scale + 0.5f);
            imageView.getLayoutParams().height = pixels;


            imageView.getLayoutParams().width = pixels;

            imageView.setScaleType(ImageView.ScaleType.FIT_XY);

            row.addView(imageView);
            imageView.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    TreasuresFragment treasureFrag = ((NavigationDrawerActivity) getActivity()).getTreasureFrag();
                    ((NavigationDrawerActivity)getActivity()).showHideFragment(treasureFrag);

                }
            });

        }

        layout.addView(row);
    }

screenshot of the application

Answer 1

在布局中创建网格视图。

Gridview grid = (Gridview) findViewById(R.id.grid_view);
grid.setNumColumns(3);
    grid.setColumnWidth(GridView.AUTO_FIT);
    grid.setVerticalSpacing(5);
    grid.setHorizontalSpacing(5);
    grid.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);

这是适配器 class： public class ImageAdapter 扩展了 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;
}

} 然后将图像列表发送到适配器

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