我想在选中时更改网格项目的文本颜色,并且一次只选择一个项目,这已经完成,但是如果gridview有很多项目,如果我选择任何项目和滚动gridview那么它将在网格中选择随机项目,并允许选择多个项目。 我尝试了很多答案,但没有找到任何单一的解决方案。 任何人都可以有任何想法?如果滚动,GridView更改其视图
我试着回答下面通过给出的链接,但它并没有解决我的问题
When the GridView scrolls, it changes its view's activated status
我会分享我的适配器getView方法和网格视图
的onItemSelected()方法的代码gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, final int position, long arg3) {
view.setSelected(true);
TextView tv = (TextView) view; // Get the current selected view as a TextView
tv.setTextColor(Color.parseColor("#50d1e4")); // Set the current selected item text color
TextView previousSelectedView = (TextView) gridview.getChildAt(previousPosition); // Get the last selected View from GridView
// If there is a previous selected view exists
if (previousPosition != -1 && previousPosition!=position) {
previousSelectedView.setSelected(false); // Set the last selected View to deselect
previousSelectedView.setTextColor(Color.parseColor("#162750")); // Set the last selected View text color as deselected item
}
previousPosition = position;
}
});
这里previousPosition的初始值= -1(它是int的类型)
适配器的getView方法如下
public static class ViewHolder
{
public TextView txt_time_slot;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder view;
final Context context = parent.getContext();
if (inflater == null)
inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
view = new ViewHolder();
convertView = inflater.inflate(R.layout.grid_item, null);
view.txt_time_slot = (TextView) convertView.findViewById(R.id.txt_item_time_slot);
convertView.setTag(view);
convertView.setId(0);
} else {
view = (ViewHolder) convertView.getTag();
}
if (listValues.get(position) != null)
{
view.txt_time_slot.setText(listValues.get(position));
}
return convertView;
}
给出这里是grid_item.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/txt_item_time_slot"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="10:20 AM"
android:gravity="center_horizontal"
android:padding="3dp"
android:textColor="#162750"
android:textStyle="bold"
android:textSize="30sp"/>
其实这些都不是随机的物品,那些被重用被“选中”的项目(你叫的setSelected)。您应该在您的适配器中处理选择/取消选择状态。 – danypata
谢谢@danypata我会尝试现在 –