1、聲明變量
private MyGridView gird_girdview;
private int oldPosition = -1;//上一個位置初始化
2、得到控件
gird_girdview = (MyGridView)findViewById(R.id.gird_girdview);
3、定義兩個背景圖片
Resources resources = XiadanActivity.this.getResources();
btnDrawable1 = resources.getDrawable(R.mipmap.stylecheck);
btnDrawable2 = resources.getDrawable(R.mipmap.stylecheckno);
4、添加適配器
mGirdViewAdapter = new GirdViewAdapter(XiadanActivity.this, infoMapList);
gird_girdview.setAdapter(mGirdViewAdapter);
5、設置第一個item默認點擊
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、點擊改變背景
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();
}
});