[英]Edittext keeps focus when keyboard up AND scrolling the listview
我使用listview。 列表中的每個項目都包含一個edittext。 當我點擊一個edittext時,彈出軟鍵盤,我點擊的edittext會在短時間內獲得焦點,然后丟失它。 我必須再次點擊才能真正獲得焦點(為什么?)
( 專注於文字和鍵盤 ) 我滾動listview ...
因為listview元素被回收,焦點重新出現在listtext中其他位置的edittext上,我想這是正常的但是為什么Android沒有刪除這個該死的焦點 ! 如果我的用戶開始滾動,我怎么能對Android確定我不想再將焦點放在edittext上?
以下是活動的代碼:
public class SimpleList extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.user_picker);
ListView listview = (ListView)this.findViewById(R.id.user_picker_list);
new UserPickerAdapter(this, listview);
}
和適配器的代碼:
public class UserPickerAdapter extends BaseAdapter {
private final LayoutInflater mInflater;
private String[] mUsers = {"Guib", "Jonas", "Fred", "Denis", "Arnold", "Francois", "David", "Alex", "Saskia", "Verner", "Anatole"};
public UserPickerAdapter(Context context, ListView listview) {
mInflater = LayoutInflater.from(context);
listview.setAdapter(this);
}
@Override
public int getCount() {
return mUsers.length;
}
@Override
public Object getItem(int position) {
return mUsers[position];
}
@Override
public long getItemId(int position) {
return position;
}
static private class Holder {
TextView username;
}
@Override
public View getView(int position, View convertView, ViewGroup arg2) {
Holder holder;
if (convertView != null) {
holder = (Holder) convertView.getTag();
} else {
holder = new Holder();
convertView = mInflater.inflate(R.layout.user_picker_list_item,null);
holder.username = (TextView) convertView.findViewById(R.id.user_picker_list_item_name);
convertView.setTag(holder);
}
String str = (String)getItem(position);
holder.username.setText(str);
return convertView;
}
以防萬一,這里是'user_picker.xml'中的代碼
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="fill_parent" android:layout_width="fill_parent" android:orientation="vertical" android:padding="0dp"><ListView android:background="@color/color_grey1" android:cacheColorHint="@color/color_grey1" android:id="@+id/user_picker_list" android:divider="@color/color_blueGrey1" android:layout_height="match_parent" android:layout_width="match_parent"/>
'user_picker_list_item.xml'中的那個
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:orientation="vertical" android:layout_height="fill_parent"><EditText android:layout_height="wrap_content"android:id="@+id/user_picker_list_item_name" android:layout_width="wrap_content" android:minWidth="200dp" android:layout_gravity="center"></EditText></LinearLayout>
我嘗試過Gilbou解決方案,但它對我不起作用,因為我在所有行中都有EditTexts。 但是通過一些改變我可以使它工作:
EditText currentEdit;
public View getView(int q, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView==null) {
convertView = (LinearLayout)inflater.inflate(R.layout.grade_row, null);
holder = new ViewHolder();
//Inflate holder
convertView.setTag(holder);
} else {
holder = (ViewHolder)convertView.getTag();
}
if (listView.getSelectedItemPosition() == ListView.INVALID_POSITION) {
if (currentEdit!=null)
currentEdit.requestFocus();
}
//update row items
return convertView;
}
另外,為listview中的每個EditText添加焦點更改偵聽器:
myEditText.setOnFocusChangeListener(new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
if(!hasFocus)
currentEdit = myEditText;
}
}
你需要添加
在XML中
機器人:descendantFocusability = “afterDescendants”
在Java中
listView.setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
我覺得它有效。
我想找到了解決方案......
我通過以下方法替換了適配器的getView()方法中的部分代碼:
if (convertView != null) {
holder = (Holder) convertView.getTag();
if (((ListView)arg2).getSelectedItemPosition() == ListView.INVALID_POSITION) {
arg2.requestFocus();
}
}
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