Android使用Gridview单行横向滚动显示

2023-09-10 05:24:05 179

本文实例为大家分享了Android使用Gridview单行横向滚动显示的具体代码，供大家参考，具体内容如下

要想实现滚动显示，layout布局里必须要使用HorizontalScrollView，才能实现横向滑动，但HorizontalScrollView标签里要嵌套一个LinearLayout布局

activity_main.xml,如下:

gridview中的item的布局如下：

实现类如下：

packagecom.example.scrollgridview;

importandroid.os.Bundle;
importandroid.app.Activity;
importandroid.content.Context;
importandroid.util.DisplayMetrics;
importandroid.view.LayoutInflater;
importandroid.view.View;
importandroid.view.ViewGroup;
importandroid.widget.AdapterView;
importandroid.widget.AdapterView.OnItemClickListener;
importandroid.widget.BaseAdapter;
importandroid.widget.GridView;
importandroid.widget.ImageView;
importandroid.widget.LinearLayout;
importandroid.widget.TextView;

publicclassMainActivityextendsActivity{

privateGridViewgridview;
privateintimgs[]={R.drawable.remote_tv_0,
R.drawable.remote_tv_1,R.drawable.remote_tv_2,
R.drawable.remote_tv_3,R.drawable.remote_tv_4,
R.drawable.remote_tv_5,R.drawable.remote_tv_6,
R.drawable.remote_tv_7,R.drawable.remote_tv_8,
R.drawable.remote_tv_9};
privateGridviewAdapteradapter;
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gridview=(GridView)findViewById(R.id.test_gridview);
adapter=newGridviewAdapter();

DisplayMetricsdm=newDisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
floatdensity=dm.density;
intsize=imgs.length;//要显示数据的个数
//gridview的layout_widht,要比每个item的宽度多出2个像素，解决不能完全显示item的问题
intallWidth=(int)(82*size*density);
//intallWidth=(int)((width/3)*size+(size-1)*3);//也可以这样使用，item的总的width加上horizontalspacing
intitemWidth=(int)(80*density);//每个item宽度
LinearLayout.LayoutParamsparams=new
LinearLayout.LayoutParams(allWidth,LinearLayout.LayoutParams.MATCH_PARENT);
gridview.setLayoutParams(params);
gridview.setColumnWidth(itemWidth);
gridview.setHorizontalSpacing(3);
gridview.setStretchMode(GridView.NO_STRETCH);
gridview.setNumColumns(size);

gridview.setAdapter(adapter);
adapter.setindex(0);
adapter.notifyDataSetChanged();

gridview.setOnItemClickListener(newOnItemClickListener(){

@Override
publicvoidonItemClick(AdapterViewparent,Viewview,
intposition,longid){
//TODOAuto-generatedmethodstub
adapter.setindex(position);
adapter.notifyDataSetChanged();
}
});
}

classGridviewAdapterextendsBaseAdapter{
privateintindex=0;
@Override
publicintgetCount(){
//TODOAuto-generatedmethodstub
returnimgs.length;
}

@Override
publicObjectgetItem(intposition){
//TODOAuto-generatedmethodstub
returnimgs[position];
}

@Override
publiclonggetItemId(intposition){
//TODOAuto-generatedmethodstub
returnposition;
}

publicvoidsetindex(intindex){
this.index=index;
}

@Override
publicViewgetView(intposition,ViewconvertView,ViewGroupparent){
//TODOAuto-generatedmethodstub
LayoutInflatermInflater=(LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
ViewHolderviewHolder;
if(convertView==null){
convertView=mInflater.inflate(R.layout.gridview_itme,null);
viewHolder=newViewHolder();
viewHolder.img=(ImageView)convertView.findViewById(R.id.item_img);
viewHolder.text=(TextView)convertView.findViewById(R.id.item_text);
convertView.setTag(viewHolder);
}else{
viewHolder=(ViewHolder)convertView.getTag();
}
if(this.index==position){
convertView.setBackgroundResource(R.drawable.list_item_bg_focus);
}
else{
convertView.setBackgroundResource(R.drawable.list_item_bg);
}
viewHolder.img.setImageResource(imgs[position]);
viewHolder.text.setText(position+"");
returnconvertView;
}

classViewHolder{
ImageViewimg;
TextViewtext;
}
}

}

代码下载地址：AndroidGridviewScroll(jb51.net).rar

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使用Gridview单行横向滚动显示

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