GridView示例1

自己做了一个最简单的网格布局，示例1：首先. 定义几张图片

private Integer[] mApps = { R.drawable.b1, R.drawable.b2, R.drawable.b3,
			R.drawable.b4, R.drawable.b5, R.drawable.b6, R.drawable.b7, R.drawable.b8, R.drawable.b9,R.drawable.b10 };

 

然后实现ImageAdapter继承BaseAdapter：

public class ImageAdapter extends BaseAdapter {
		private Context context;
		public ImageAdapter(Context c) {
			super();
			this.context = c;
		}
		
		public int getCount() {
			return mApps.length;
		}

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

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

		public View getView(int position, View converView, ViewGroup parent) {
			ImageView i;
			if (converView == null) {
				i = new ImageView(context);
				i.setLayoutParams(new GridView.LayoutParams(75, 75));
				i.setScaleType(ImageView.ScaleType.FIT_CENTER);
				i.setPadding(5, 5, 5, 5);
			} else {
				i = (ImageView) converView;
			}
			i.setImageResource(mApps[position]);

			return i;
		}

	}

 

在Activity中实现：

@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		GridView mgrid = (GridView) findViewById(R.id.grid);
		 mgrid.setAdapter(new ImageAdapter(this));
		 mgrid.setBackgroundResource(R.drawable.background);
		mgrid.setOnItemClickListener(new OnItemClickListener() {

			public void onItemClick(AdapterView<?> arg0, View arg1, int position,
					long arg3) {
				Toast.makeText(MainActivity.this, "你选中了 " + (position+1)+"号图片",
						Toast.LENGTH_SHORT).show();
			}
		});
	}

 GridView 是在main.xml中定义

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<GridView 
	android:layout_width="fill_parent" android:layout_height="fill_parent"
	android:padding="10dip" android:verticalSpacing="10dip"
	android:horizontalSpacing="10dip" android:numColumns="auto_fit"
	android:columnWidth="60dip" android:stretchMode="columnWidth"
	android:gravity="center" android:id="@+id/grid"/>
</LinearLayout>