Android Widget界面组件之网格视图GridView

Android Widget界面组件之网格视图GridView是本文要介绍的内容，主要是来了解并学习Android Widget界面中网络视图GridView的应用，具体内容的详解来看本文详解。

GridView按照行列的方式来显示内容。一般适合显示图标。图片等内容，主要用于设置Adapter。

通过基础类BaseAdapter类，重写getView()方法来设置图片显示格式。

/Chapter04_UI_GridView01/src/com/amaker/test/MainActivity.java 

代码

package com.amaker.test;  
 
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 MainActivity extends Activity {  
    private GridView gv;  
      
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);  
        gv = (GridView)findViewById(R.id.GridView01);  
        gv.setNumColumns(4);  
        // gv.setNumColumns(3);  
        // String[] strs = {"a","a1","a2","b","b1","b2","c","c1","c2"};  
        // ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_gallery_item,strs);  
        gv.setAdapter(new MyAdapter(this));  
          
    }  
      
    class MyAdapter extends BaseAdapter{  
          
        private Integer[] imgs = {  
                R.drawable.gallery_photo_1,  
                R.drawable.gallery_photo_2,  
                R.drawable.gallery_photo_3,  
                R.drawable.gallery_photo_4,  
                R.drawable.gallery_photo_5,  
                R.drawable.gallery_photo_6,  
                R.drawable.gallery_photo_7,  
                R.drawable.gallery_photo_8,  
                  
                R.drawable.gallery_photo_1,  
                R.drawable.gallery_photo_2,  
                R.drawable.gallery_photo_3,  
                R.drawable.gallery_photo_4,  
                R.drawable.gallery_photo_5,  
                R.drawable.gallery_photo_6,  
                R.drawable.gallery_photo_7,  
                R.drawable.gallery_photo_8  
        };  
        Context context;  
        MyAdapter(Context context){  
            this.context = context;  
        }  
        public int getCount() {  
            return imgs.length;  
        }  
 
        public Object getItem(int item) {  
            return item;  
        }  
 
        public long getItemId(int id) {  
            return id;  
        }  
 
        public View getView(int position, View convertView, ViewGroup parent) {  
             ImageView imageView;  
                if (convertView == null) {  
                    imageView = new ImageView(context);  
                    imageView.setLayoutParams(new GridView.LayoutParams(45, 45));  
                    imageView.setAdjustViewBounds(false);  
                    imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);  
                    imageView.setPadding(8, 8, 8, 8);  
                } else {  
                    imageView = (ImageView) convertView;  
                }  
                imageView.setImageResource(imgs[position]);  
                return imageView;  
        }  
    }  
} 

小结：Android Widget界面组件之网格视图GridView的内容介绍完了，希望通过Android Widget界面内容的学习能对你有所帮助。