我有一个简单的GridView BaseAdapter,当单击Grid中的一个单元格时,它当然会为Grid中的每个位置调用getView。在大多数情况下,将为视图中的每个位置调用getView(应如此),但有时只为第一个位置调用。我需要针对视图中的每个位置调用此方法,以突出显示选定的单元格并取消突出显示其他单元格,但是由于并非针对每个位置都调用此方法,因此不会取消突出显示未选中的单元格。
getView方法:
class AdapterSelectReference(context: Context, list: List<String>) : BaseAdapter()
{
override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View
{
Logger.log(C.LOG_I, "~*ADAPTER_SELECT_REFERENCE", object{}.javaClass.enclosingMethod?.name + ": start: position = " + position)
val view: View
val lrh: ListRowHolder
if(convertView == null)
{
view = this.mInflator.inflate(R.layout.grid_cell_layout, parent, false)
lrh = ListRowHolder(view)
view.tag = lrh
}
else
{
view = convertView
lrh = view.tag as ListRowHolder
}
lrh.label.text = list[position]
if(position != Settings.referenceSelected.book)
lrh.label.setBackgroundColor(Color.parseColor("#ffffff"))
else
lrh.label.setBackgroundColor(Color.parseColor("#E0E7E7"))
return view
}
}
活动:
class ActivitySelectReference : AppCompatActivity()
{
lateinit var gvBooks: GridView
lateinit var adapterBooks: AdapterSelectReference
lateinit var listBooks: List<String>
override fun onCreate(savedInstanceState: Bundle?)
{
listBooks = resources.getStringArray(R.array.bible_books).toList()
gvBooks = findViewById(R.id.references_grid_view_books) as GridView
adapterBooks = AdapterSelectReference(this, listBooks)
gvBooks.setAdapter(adapterBooks)
...
}
...
}
通过一定的触摸调用仅显示位置0的日志打印输出:
2020-01-15 09:23:16.376 26646-26646/com.samuelriesterer.custombiblereadingplan I/~*ADAPTER_SELECT_REFERENCE: getView: start: position = 0
2020-01-15 09:23:16.393 26646-26646/com.samuelriesterer.custombiblereadingplan I/chatty: uid=10283(u0_a283) com.samuelriesterer.custombiblereadingplan identical 1 line
2020-01-15 09:23:16.399 26646-26646/com.samuelriesterer.custombiblereadingplan I/~*ADAPTER_SELECT_REFERENCE: getView: start: position = 0
不是将背景色设置为TextView
,而是像view
上设置
if(position != Settings.referenceSelected.book)
view.setBackgroundColor(Color.parseColor("#ffffff"))
else
view.setBackgroundColor(Color.parseColor("#E0E7E7"))
这将解决突出显示/不突出显示的问题