gridview--基本的gridview

GridView 元素距离设定

因为该设定比较简单 防止以后忘记 所以贴 供自己查阅

1. 布局：main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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/grid"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"

    android:horizontalSpacing="50dp"
    android:verticalSpacing="50dp"
    />
</RelativeLayout>

2. *.jave: GriUsage.java

public class GridUsage extends Activity {
    GridView grid;
    ImageAdapter iAdapter;

    String[] text = {
            "one","two","three","four","five","six","seven","eight","nine","ten"
    };

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        grid = (GridView)findViewById(R.id.grid);
        iAdapter = new ImageAdapter(this);

        grid.setAdapter(iAdapter);
        grid.setNumColumns(3);

    }

    public class ImageAdapter extends BaseAdapter {
        Activity activity;

        public ImageAdapter(Activity a){
            activity = a;
        }
        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return text.length;
        }

        @Override
        public Object getItem(int arg0) {
            // TODO Auto-generated method stub
            return null;
        }

        @Override
        public long getItemId(int arg0) {
            // TODO Auto-generated method stub
            return arg0;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // TODO Auto-generated method stub
            TextView tv;

            if(convertView == null){
                tv = new TextView(activity);
            }
            else {
                tv = (TextView)convertView;
            }

            tv.setSingleLine(true);
            tv.setBackgroundResource(R.drawable.back);
            tv.setGravity(Gravity.CENTER);
            tv.setText(text[position]);
            return tv;
        }

    }

}

3. emulator 运行截图：

that's all.  any idea or other are welcome!!!!