GridView横向滚动

GridView和ListView都是android比较重要的控件，但是横滚的控件不是太多。

这里介绍怎么把GridView横向滚动起来，看到其他网友也有相应的解决方法，自己只是把这些知识总结一下，供大家参考！

首先让GridView横向滚动需要HorizontalScrollView这个控件，例如：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <HorizontalScrollView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:scrollbars="none" >

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <GridView
                android:id="@+id/gridview"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="center" >
            </GridView>
        </LinearLayout>
    </HorizontalScrollView>

</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <ImageView
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:background="#00ff00" />

    <TextView
        android:id="@+id/item_textview"
        android:layout_width="100dp"
        android:layout_height="20dp"
        android:gravity="center" />

</LinearLayout>

以下是Activity的实现方法。

public class MainActivity extends Activity {

	private GridView gridView;
	private LayoutInflater inflater;
	private List<String> dataList = new ArrayList<String>();

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		gridView = (GridView) this.findViewById(R.id.gridview);
		for (int i = 0; i < 10; i++) {
			dataList.add("测试" + i);
		}
		inflater = (LayoutInflater) this
				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		GridViewAdapter adapter = new GridViewAdapter();
		gridView.setAdapter(adapter);
		int size = dataList.size();
		DisplayMetrics dm = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(dm);
		float density = dm.density;
		int allWidth = (int) (110 * size * density);
		int itemWidth = (int) (100 * density);
		LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
				allWidth, LinearLayout.LayoutParams.FILL_PARENT);
		gridView.setLayoutParams(params);
		gridView.setColumnWidth(itemWidth);
		gridView.setHorizontalSpacing(10);
		gridView.setStretchMode(GridView.NO_STRETCH);
		gridView.setNumColumns(size);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.activity_main, menu);
		return true;
	}

	final class GridViewAdapter extends BaseAdapter {
		
		@Override
		public int getCount() {
			return dataList.size();
		}

		@Override
		public Object getItem(int position) {
			return dataList.get(position);
		}

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

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			convertView = inflater.inflate(R.layout.gridview_item, null);
			TextView textView = (TextView) convertView
					.findViewById(R.id.item_textview);
			String str = dataList.get(position);
			textView.setText(str);
			return convertView;
		}

	}
}