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我正在創建自定義listview
,其中我已提供了一個複選框。我創建了一個擴展適配器的自定義適配器類。我將這些複選框的值存儲在適配器類的數組中。 arraylist的名字是itemname(你可以在customadapter類的底部看到它)。我想將這個數組列表發送到一個活動中(爲了將這些值存儲到數據庫中)。由於我擴展了陣列適配器類,所以我不能使用sharedpreferences
。可以解決這個問題嗎?我的適配器類如下。如何將類ArrayList從擴展arryadapter傳遞到活動
public class CustomArrayAdapter extends ArrayAdapter<Model> {
protected static final String MODE_PRIVATE = null;
private final List<Model> list;
private final Activity context;
public CustomArrayAdapter(Activity context, List<Model> list) {
super(context, R.layout.customlistlayout, list);
this.context = context;
this.list = list;
}
static class ViewHolder {
protected TextView mText;
protected CheckBox mCheckbox;
public string getItemAtPosition(int i) {
// TODO Auto-generated method stub
return null;
}
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = null;
if (convertView == null) {
final ArrayList<String> itemname = new ArrayList<String>();
LayoutInflater inflator = context.getLayoutInflater();
view = inflator.inflate(R.layout.customlistlayout, null);
final ViewHolder viewHolder = new ViewHolder();
viewHolder.mText = (TextView) view.findViewById(R.id.settings_label);
viewHolder.mCheckbox = (CheckBox) view.findViewById(R.id.check);
Activity activity = new SettingsActivity();
viewHolder.mCheckbox.setOnCheckedChangeListener(activity);
viewHolder.mCheckbox
.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
Model element = (Model) viewHolder.mCheckbox
.getTag();
element.setSelected(buttonView.isChecked());
**itemname.add(element.getName());**
}
});
for (String myValue : itemname) {
System.out.println(myValue);
}
view.setTag(viewHolder);
viewHolder.mCheckbox.setTag(list.get(position));
} else {
view = convertView;
((ViewHolder) view.getTag()).mCheckbox.setTag(list.get(position));
}
ViewHolder holder = (ViewHolder) view.getTag();
holder.mText.setText(list.get(position).getName());
holder.mCheckbox.setChecked(list.get(position).isSelected());
return view;
}
}
我打電話下面這個適配器類從活動
ArrayAdapter<Model> settingsadapter = new CustomArrayAdapter(this, getModel()); setListAdapter(settingsadapter);