第一篇 GridView控件

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结构如图：

main 代码：

<?xml version="1.0" encoding="utf-8"?>
<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:id="@+id/gv1" android:layout_height="wrap_content"
		android:layout_width="fill_parent"
		android:columnWidth="90dp"
        android:numColumns="auto_fit"
        android:horizontalSpacing="10dp"
        android:verticalSpacing="10dp"
        android:stretchMode="columnWidth"
        android:gravity="center"
	  ></GridView>
</LinearLayout>

Control_GridViewActivity.java代码：

public class Control_GridViewActivity extends Activity {

	GridView gv;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		gv = (GridView) this.findViewById(R.id.gv1);
		gv.setAdapter(new myadpter(Control_GridViewActivity.this));
		gv.setOnItemClickListener(new OnItemClickListener() {

			public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
					long arg3) {
				// TODO Auto-generated method stub
				ImageView iv = (ImageView) arg1;
				String name = iv.getResources().getResourceName(mygroup[arg2]);
				Toast.makeText(Control_GridViewActivity.this,
						String.valueOf(arg2) + "name:" + name,
						Toast.LENGTH_LONG).show();
			}
		});
	}

	class myadpter extends BaseAdapter {

		Context ct;

		public myadpter(Context ct) {
			this.ct = ct;
		}

		public int getCount() {
			// TODO Auto-generated method stub
			return 20;
		}

		public Object getItem(int position) {
			// TODO Auto-generated method stub
			return position;
		}

		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return position;
		}

		public View getView(int position, View convertView, ViewGroup parent) {
			// TODO Auto-generated method stub
			// return null;

			ImageView iv = new ImageView(ct);
			iv.setLayoutParams(new GridView.LayoutParams(85, 85));
			iv.setScaleType(ImageView.ScaleType.CENTER_CROP);
			iv.setPadding(8, 8, 8, 8);
			iv.setImageBitmap(BitmapFactory.decodeResource(getResources(),
					mygroup[position]));
			return iv;
		}

	}

	int[] mygroup = { R.raw.jwc1, R.raw.jwc2, R.raw.jwc3, R.raw.jwc4,
			R.raw.jwc5, R.raw.jwc1, R.raw.jwc2, R.raw.jwc3, R.raw.jwc4,
			R.raw.jwc5, R.raw.jwc1, R.raw.jwc2, R.raw.jwc3, R.raw.jwc4,
			R.raw.jwc5, R.raw.jwc1, R.raw.jwc2, R.raw.jwc3, R.raw.jwc4,
			R.raw.jwc5 };
}