GridView控件

最新推荐文章于 2018-12-06 08:51:18 发布

原创最新推荐文章于 2018-12-06 08:51:18 发布 · 268 阅读

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转载: http://www.cnblogs.com/webabcd/archive/2010/01/27/1657171.html

GridView网格控件

例图:

<?xml version="1.0" encoding="utf-8"?>

<!--
    GridView - 网格控件
        numColumns="auto_fit" - 列数自适应
        stretchMode - 缩放模式（stretchMode="columnWidth" - 缩放与列宽大小同步）
-->
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/gridView" android:layout_width="fill_parent"
    android:layout_height="fill_parent" android:padding="10px"
    android:verticalSpacing="10px" android:horizontalSpacing="10px"
    android:numColumns="auto_fit" android:columnWidth="60px"
    android:stretchMode="columnWidth" android:gravity="center">
</GridView>

package com.gridview;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

public class GridviewActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        this.setContentView(R.layout.main);

        setTitle("GridView");

        GridView gridView = (GridView) findViewById(R.id.gridView);
        // 指定网格控件的适配器为自定义的图片适配器
        gridView.setAdapter(new ImageAdapter(this));
    }

    // 自定义的图片适配器
    public class ImageAdapter extends BaseAdapter {

        private Context mContext;

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

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

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

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

        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView imageView;
            if (convertView == null) {
                imageView = new ImageView(mContext);
                imageView.setLayoutParams(new GridView.LayoutParams(48, 48));
                imageView.setAdjustViewBounds(false);
                imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
                imageView.setPadding(5, 5, 5, 5);
            } else {
                imageView = (ImageView) convertView;
            }

            imageView.setImageResource(mThumbIds[position]);

            return imageView;
        }

        // 网格控件所需图片数据的数据源
        private Integer[] mThumbIds = { R.drawable.icon01, R.drawable.icon02,
                R.drawable.icon03};
    }
}