Question

android GridView 如何设置为左右可滚动？

在GridView中如何设置为左右可滑动，默认的是垂直滑动，但是，现在我需要设置为垂直方向不可滑动，而水平方向可滑动？ 谢谢！

Answer 1

GridView不支持左右滚动。

左右滚动的需求可考虑：

1. 在外层加一个HorizontalScrollView， 不过这种滑动体验并不好，上下左右均可滑动，如果是斜着滑的时候，体验差。当然，如果你会自定义HorizontalScrollView把滑动区分为斜着上下滑和斜着左右滑，再把斜着上下滑的事件传递给子View也是可以的。

2. 可以考虑Viewpager里加载多个GridView，这样GridView就可以一页一页的滑
   

Answer 2

上下空间大，还可以滚动，只要设置：mGridView .setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { Log.e("onTouch", "MotionEvent.ACTION_MOVE"); return MotionEvent.ACTION_MOVE == event.getAction() ? true : false; } });这样，就不能上下滚动了

Answer 3

直接上代码
package com.example.horizontallistview;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

/***
*
* @author ymw
* @summary 博客地址欢迎访问： http://www.cnblogs.com/_ymw
*/
public class MainActivity extends Activity {

List<CityItem> cityList;
RelativeLayout itmel;
GridView gridView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LayoutInflater layoutInflater = (LayoutInflater) this
.getSystemService("layout_inflater");
gridView = (GridView) findViewById(R.id.grid);
setData();
setGridView();
}
/**设置数据*/
private void setData() {
cityList = new ArrayList<CityItem>();
CityItem item = new CityItem();
item.setCityName("深圳");
item.setCityCode("0755");
cityList.add(item);
item = new CityItem();
item.setCityName("上海");
item.setCityCode("021");
cityList.add(item);
item = new CityItem();
item.setCityName("广州");
item.setCityCode("020");
cityList.add(item);
item = new CityItem();
item.setCityName("北京");
item.setCityCode("010");
cityList.add(item);
item = new CityItem();
item.setCityName("武汉");
item.setCityCode("027");
cityList.add(item);
item = new CityItem();
item.setCityName("孝感");
item.setCityCode("0712");
cityList.add(item);
cityList.addAll(cityList);
}

/**设置GirdView参数，绑定数据*/
private void setGridView() {
int size = cityList.size();
int length = 100;
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
float density = dm.density;
int gridviewWidth = (int) (size * (length + 4) * density);
int itemWidth = (int) (length * density);

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
gridviewWidth, LinearLayout.LayoutParams.FILL_PARENT);
gridView.setLayoutParams(params); // 设置GirdView布局参数,横向布局的关键
gridView.setColumnWidth(itemWidth); // 设置列表项宽
gridView.setHorizontalSpacing(5); // 设置列表项水平间距
gridView.setStretchMode(GridView.NO_STRETCH);
gridView.setNumColumns(size); // 设置列数量=列表集合数

GridViewAdapter adapter = new GridViewAdapter(getApplicationContext(),
cityList);
gridView.setAdapter(adapter);
}
/**GirdView 数据适配器*/
public class GridViewAdapter extends BaseAdapter {
Context context;
List<CityItem> list;
public GridViewAdapter(Context _context, List<CityItem> _list) {
this.list = _list;
this.context = _context;
}

@Override
public int getCount() {
return list.size();
}

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

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

@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater layoutInflater = LayoutInflater.from(context);
convertView = layoutInflater.inflate(R.layout.list_item, null);
TextView tvCity = (TextView) convertView.findViewById(R.id.tvCity);
TextView tvCode = (TextView) convertView.findViewById(R.id.tvCode);
CityItem city = list.get(position);

tvCity.setText(city.getCityName());
tvCode.setText(city.getCityCode());
return convertView;
}
}

public class CityItem {
private String cityName;
private String cityCode;

public String getCityName() {
return cityName;
}

public void setCityName(String cityName) {
this.cityName = cityName;
}

public String getCityCode() {
return cityCode;
}

public void setCityCode(String cityCode) {
this.cityCode = cityCode;
}
}
}

Answer 4

学习了，不过左右滚动，上下的空间好大，不知道怎么控制。