Android GridView实现横向列表水平滚动

2023-09-10 05:15:05 60

本文实例为大家分享了AndroidGridView实现横向列表水平滚动的具体代码，供大家参考，具体内容如下

有时候根据项目需要，使用可横向滑动的GridView。仅以该文记录一下，毕竟没什么技术含量。

1.主界面布局代码：activity_main.xml。设置android:numColumns=”auto_fit”是因为可以不定项的添加子项。

2.主界面GridView列表子项布局文件：home_gridview_item.xml

3.java实现代码：MainActivity.java

importandroid.support.v7.app.AppCompatActivity;
importandroid.os.Bundle;
importandroid.util.DisplayMetrics;
importandroid.widget.GridView;
importandroid.widget.LinearLayout;

publicclassMainActivityextendsAppCompatActivity{
AblGridViewid_gridview_home;
privateint[]imgs={R.mipmap.index1_nav_xc,R.mipmap.index1_nav_xc,
R.mipmap.index1_nav_xc,R.mipmap.index1_nav_xc,R.mipmap.index1_nav_xc};
privateString[]titles=newString[]{"子项1","子项2","子项3","子项4","子项5"};
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
id_gridview_home=(AblGridView)findViewById(R.id.id_gridview_home);
setGridView();
}

/**设置GirdView参数，绑定数据*/
privatevoidsetGridView(){
intsize=imgs.length;
intlength=100;
DisplayMetricsdm=newDisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
floatdensity=dm.density;
intgridviewWidth=(int)(size*(length+4)*density);
intitemWidth=(int)(length*density);
LinearLayout.LayoutParamsparams=newLinearLayout.LayoutParams(
gridviewWidth,LinearLayout.LayoutParams.FILL_PARENT);
id_gridview_home.setLayoutParams(params);//设置GirdView布局参数,横向布局的关键
id_gridview_home.setColumnWidth(itemWidth);//设置列表项宽
id_gridview_home.setHorizontalSpacing(5);//设置列表项水平间距
id_gridview_home.setStretchMode(GridView.NO_STRETCH);
id_gridview_home.setNumColumns(size);//设置列数量=列表集合数
AblGridViewBaseAdapteradapter=newAblGridViewBaseAdapter(this,imgs,titles);
id_gridview_home.setAdapter(adapter);
}
}

4.自定义控件：AblGridView

importandroid.content.Context;
importandroid.util.AttributeSet;
importandroid.widget.GridView;

/**
*继承GridView控件，为了更友好的显示
*解决在scrollview中只显示第一行数据的问题
*/
publicclassAblGridViewextendsGridView{
publicAblGridView(Contextcontext,AttributeSetattrs){
super(context,attrs);
}

publicAblGridView(Contextcontext){
super(context);
}

publicAblGridView(Contextcontext,AttributeSetattrs,intdefStyle){
super(context,attrs,defStyle);
}

@Override
publicvoidonMeasure(intwidthMeasureSpec,intheightMeasureSpec){
intexpandSpec=MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE>>2,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec,expandSpec);
}

}

5.重写适配器：AblGridViewBaseAdapter

importandroid.content.Context;
importandroid.util.SparseArray;
importandroid.view.LayoutInflater;
importandroid.view.View;
importandroid.view.ViewGroup;
importandroid.widget.BaseAdapter;
importandroid.widget.ImageView;
importandroid.widget.TextView;

/**
*重写适配器
*/
publicclassAblGridViewBaseAdapterextendsBaseAdapter{

privateContextmContext;
privateString[]Title;//显示标题数组
privateint[]Imgs;//显示图标数组

publicAblGridViewBaseAdapter(ContextmContext,int[]imgs,String[]titles){
super();
this.mContext=mContext;
Title=titles;
Imgs=imgs;
}

@Override
publicintgetCount(){
returnTitle.length;
}

@Override
publicObjectgetItem(intposition){
returnposition;
}

@Override
publiclonggetItemId(intposition){
returnposition;
}

@Override
publicViewgetView(intposition,ViewconvertView,ViewGroupparent){
convertView=loadHomeHyOrYs(position,convertView,parent);
returnconvertView;
}

/**
*加载会员或医生的功能列表
*/
publicViewloadHomeHyOrYs(intposition,ViewconvertView,ViewGroupparent){
if(convertView==null){
convertView=LayoutInflater.from(mContext).inflate(
R.layout.home_gridview_item,parent,false);
}
TextViewtv=get(convertView,R.id.id_tv_item);
ImageViewiv=get(convertView,R.id.id_iv_item);
iv.setBackgroundResource(Imgs[position]);
tv.setText(Title[position]);
returnconvertView;
}

publicTget(Viewview,intid){
SparseArrayviewHolder=(SparseArray)view.getTag();
if(viewHolder==null){
viewHolder=newSparseArray();
view.setTag(viewHolder);
}
ViewchildView=viewHolder.get(id);
if(childView==null){
childView=view.findViewById(id);
viewHolder.put(id,childView);
}
return(T)childView;
}

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

Android GridView实现横向列表水平滚动

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