android的listview中怎么加入button
答案:2 悬赏:70 手机版
解决时间 2021-02-01 12:50
- 提问者网友：临风不自傲
- 2021-02-01 07:42
android的listview中怎么加入button
最佳答案
- 五星知识达人网友：撞了怀
- 2021-02-01 09:04
//注意原本getView方法中的int position变量是非final的，现在改为final
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
holder=new ViewHolder();
//可以理解为从vlist获取view 之后把view返回给ListView
convertView = mInflater.inflate(R.layout.vlist, null);
holder.title = (TextView)convertView.findViewById(R.id.title);
holder.info = (TextView)convertView.findViewById(R.id.info);
holder.viewBtn = (Button)convertView.findViewById(R.id.view_btn);
convertView.setTag(holder);
}else {
holder = (ViewHolder)convertView.getTag();
}
holder.title.setText((String)mData.get(position).get("title"));
holder.info.setText((String)mData.get(position).get("info"));
holder.viewBtn.setTag(position);
//给Button添加单击事件 添加Button之后ListView将失去焦点 需要的直接把Button的焦点去掉
holder.viewBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showInfo(position);
}
});
//holder.viewBtn.setOnClickListener(MyListener(position));
return convertView;
}
}
//提取出来方便点
public final class ViewHolder {
public TextView title;
public TextView info;
public Button viewBtn;
}
public void showInfo(int position){
ImageView img=new ImageView(ListViewActivity.this);
img.setImageResource(R.drawable.b);
new AlertDialog.Builder(this).setView(img)
.setTitle("详情"+position)
.setMessage("菜名："+title[position]+" 价格:"+info[position])
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
})
.show();
}
给你发个列子
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
holder=new ViewHolder();
//可以理解为从vlist获取view 之后把view返回给ListView
convertView = mInflater.inflate(R.layout.vlist, null);
holder.title = (TextView)convertView.findViewById(R.id.title);
holder.info = (TextView)convertView.findViewById(R.id.info);
holder.viewBtn = (Button)convertView.findViewById(R.id.view_btn);
convertView.setTag(holder);
}else {
holder = (ViewHolder)convertView.getTag();
}
holder.title.setText((String)mData.get(position).get("title"));
holder.info.setText((String)mData.get(position).get("info"));
holder.viewBtn.setTag(position);
//给Button添加单击事件 添加Button之后ListView将失去焦点 需要的直接把Button的焦点去掉
holder.viewBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showInfo(position);
}
});
//holder.viewBtn.setOnClickListener(MyListener(position));
return convertView;
}
}
//提取出来方便点
public final class ViewHolder {
public TextView title;
public TextView info;
public Button viewBtn;
}
public void showInfo(int position){
ImageView img=new ImageView(ListViewActivity.this);
img.setImageResource(R.drawable.b);
new AlertDialog.Builder(this).setView(img)
.setTitle("详情"+position)
.setMessage("菜名："+title[position]+" 价格:"+info[position])
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
})
.show();
}
给你发个列子
全部回答
- 1楼网友：野味小生
- 2021-02-01 09:13
需要自定义listview的适配器。在getview方法里面设置三个button的点击事件。
给个例子你：
private class testadapter extends baseadapter {
private layoutinflater minflater;
private context con;
public testadapter (context context) {
// cache the layoutinflate to avoid asking for a new one each time.
con = context;
minflater = layoutinflater.from(context);
}
public int getcount() {
return list.size();
}
public object getitem(int position) {
return position;
}
public long getitemid(int position) {
return position;
}
public view getview(int position, view convertview, viewgroup parent) {
final viewholder holder;
if (convertview == null) {
convertview = minflater.inflate(r.layout.list, null);
holder = new viewholder();
holder.bt01 = (button) convertview.findviewbyid(r.id.bt01);
holder.bt02 = (button) convertview.findviewbyid(r.id.bt02);
holder.bt03 = (button) convertview.findviewbyid(r.id.bt03);
convertview.settag(holder);
} else {
holder = (viewholder) convertview.gettag();
}
final int arg = position;
//bt01点击
holder.bt01.setonclicklistener(new imageview.onclicklistener(){
public void onclick(view v) {
}
});
//bt02点击
holder.bt02.setonclicklistener(new imageview.onclicklistener(){
public void onclick(view v) {
}
});
//bt03点击
holder.bt03.setonclicklistener(new imageview.onclicklistener(){
public void onclick(view v) {
}
});
return convertview;
}
class viewholder {
button bt01;
button bt02;
button bt03;
}
}
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