我試圖將我的數據添加到列表視圖。我正在使用適配器。列表視圖內部有單選按鈕和一些字段。class StocktakeEditViewAdaptor : BaseAdapter<Model.FileRecord>{private Dictionary<int, bool> checkDictionary = new Dictionary<int, bool>();public override View GetView(int position, View convertView, ViewGroup parent) { var item = items[position]; View view = convertView; //if (view == null) { view = context.LayoutInflater.Inflate(Resource.Layout.StockTakeEditDetailList, null); view.DuplicateParentStateEnabled = true; createdview.Add(view); RadioButton lblradio = view.FindViewById<RadioButton>(Resource.Id.lblradio); lblradio.Tag = item.FileRecord_ID + ":" + item.ST_filename + ":" + item.ST_BinLoc;lblradio.Checked = checkDictionary[position]; //add position here lblradio.SetOnCheckedChangeListener(null); lblradio.SetOnCheckedChangeListener(new CheckedChangeListener(this.context)); view.FindViewById<TextView>(Resource.Id.txtLineNo).Text = item.FileRecord_ID.ToString(); //my field in adapter. view.FindViewById<TextView>(Resource.Id.txtbinloc).Text = item.ST_BinLoc.ToString(); view.FindViewById<TextView>(Resource.Id.txtBarcodett).Text = item.ST_Barcode.ToString(); view.FindViewById<TextView>(Resource.Id.txtQtytt).Text = item.ST_Qty.ToString(); if (!view.HasOnClickListeners) view.Click += View_LongClick; view.RefreshDrawableState(); } return view; } public void OnCheckedChanged(CompoundButton buttonView, bool isChecked) { for (int i = 0; i < checkDictionary.Count(); i++) { if (i == (int)buttonView.Tag) { checkDictionary[i] = true; //error on here } else { checkDictionary[i] = false; //error on here } } }我可以在列表視圖中顯示我的記錄。但是單選按鈕可以選擇多個。我不想選擇多條記錄。
2 回答
當年話下
TA貢獻1890條經驗 獲得超9個贊
您可以創建一個集合來存儲單選按鈕的檢查狀態，然后在加載集合時加載該集合getView。像這樣 ：
class YourAdapter : BaseAdapter,CompoundButton.IOnCheckedChangeListener
{
private Dictionary<int, bool> checkDictionary = new Dictionary<int, bool>();
int[] item; //raplace your own data
public MyAdapter(int[] value) //raplace your own data
{
item = value;
for (int i = 0; i < item.Length; i++)
{
checkDictionary.Add(i,false);
}
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var item = items[position];
View view = convertView;
//if (view == null)
{
view = context.LayoutInflater.Inflate(Resource.Layout.StockTakeEditDetailList, null);
view.DuplicateParentStateEnabled = true;
createdview.Add(view);
RadioButton lblradio = view.FindViewById<RadioButton>(Resource.Id.lblradio);
lblradio.Tag = position;
lblradio.Checked = checkDictionary[position];
lblradio.SetOnCheckedChangeListener(this);
view.FindViewById<TextView>(Resource.Id.txtLineNo).Text = item.FileRecord_ID.ToString(); //my field in adapter.
view.FindViewById<TextView>(Resource.Id.txtbinloc).Text = item.ST_BinLoc.ToString();
view.FindViewById<TextView>(Resource.Id.txtBarcodett).Text = item.ST_Barcode.ToString();
view.FindViewById<TextView>(Resource.Id.txtQtytt).Text = item.ST_Qty.ToString();
if (!view.HasOnClickListeners)
view.Click += View_LongClick;
view.RefreshDrawableState();
}
return view;
}
public void OnCheckedChanged(CompoundButton buttonView, bool isChecked)
{
for (int i = 0; i < checkDictionary.Count; i++)
{
if (i == (int) buttonView.Tag)
{
checkDictionary[i] = true;
}
else
{
checkDictionary[i] = false;
}
}
NotifyDataSetChanged();
}
}
波斯汪
TA貢獻1811條經驗 獲得超4個贊
您可以選擇多個單選按鈕的原因是它們不屬于同一個單選按鈕組。
引用自 Android Radiobutton官方文檔。
要創建每個單選按鈕選項，請在布局中創建一個 RadioButton。但是，由于單選按鈕是互斥的，您必須在 RadioGroup 中將它們組合在一起。通過將它們組合在一起，系統可以確保一次只能選擇一個單選按鈕。
這個怎么做？
RadioGroup 就像 Radiobuttons 的視圖組，因此您可以像使用它一樣使用它
XML:
<?xml version="1.0" encoding="utf-8"?>
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RadioButton android:id="@+id/radio_pirates"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/pirates"
android:onClick="onRadioButtonClicked"/>
<RadioButton android:id="@+id/radio_ninjas"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/ninjas"
android:onClick="onRadioButtonClicked"/>
</RadioGroup>
C＃：
RadioGroup rg = new RadioGroup(this); //create the RadioGroup
rg.Orientation = Orientation.Horizontal;//or Orientation.VERTICAL
RadioButton rb = new RadioButton(this);// create the radiobutton
rg.AddView(rb);// add to radio group
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