1、声明变量
private MyGridView
gird_girdview;
private int oldPosition = -
1;//上一个位置初始化
2、得到控件
gird_girdview
= (MyGridView)findViewById(R.id.gird_girdview);
3、定义两个背景图片Resources resources = XiadanActivity.
this.getResources();
btnDrawable1 = resources.getDrawable(R.mipmap.
stylecheck);
btnDrawable2 = resources.getDrawable(R.mipmap.
stylecheckno);
4、添加适配器
mGirdViewAdapter
= new GirdViewAdapter(XiadanActivity.this, infoMapList);gird_girdview.setAdapter(
mGirdViewAdapter);
5、设置第一个item默认点击
gird_girdview.post(
new Runnable() {
@Override
public void run() {
gird_girdview.getChildAt(
0).setBackgroundDrawable(
btnDrawable1);
gird_girdview.setItemChecked(
0,
true);
priceId =
infoMapList.get(
0).get(
"PriceId");
}
});5、点击改变背景
gird_girdview.setOnItemClickListener(
new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position,
long id) {
if (
oldPosition != -
1) {
parent.getChildAt(
oldPosition).setBackgroundDrawable(
btnDrawable2);
}
gird_girdview.getChildAt(
0).setBackgroundDrawable(
btnDrawable2);
gird_girdview.setItemChecked(
0,
false);
oldPosition = position;
view.setBackgroundDrawable(
btnDrawable1);
TextView tv = (TextView) view.findViewById(R.id.
tv_PriceId);
priceId = tv.getText().toString();
}
});
