EDITTEXT保持专注，当键盘的上和滚动列表视图 [英] Edittext keeps focus when keyboard up AND scrolling the listview
问题描述
我用一个ListView。列表中的每个项目都包含一个EditText上。当我点击一个EditText，软键盘弹出时，我的EditText收益上点击的焦点很短的时间，然后失去它。我必须单击第二次真正的焦点（为什么？）
（专注于一个editext 和键盘了）我滚动列表视图 ...
由于列表视图元素的回收利用，重点就重新出现在的EditText在列表中的其他位置，我想这是正常的，但为什么Android的不会删除这该死的焦点！？我怎么能拒绝到Android确定，如果我的用户开始滚动我不希望再重点对一个EditText？
下面是活动的code：
公共类simplelist中延伸活动{
@覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.user_picker）; ListView控件列表视图=（ListView控件）this.findViewById（R.id.user_picker_list）;
新UserPickerAdapter（这一点，列表视图）;}
和适配器的code：
公共类UserPickerAdapter延伸BaseAdapter {私人最终LayoutInflater mInflater;私有String [] mUsers = {Guib，乔纳斯，弗雷德，丹尼斯，阿诺德，弗朗索瓦，国宝，亚历克斯，萨斯基亚，弗纳，阿纳托利 };公共UserPickerAdapter（上下文的背景下，ListView控件列表视图）{ mInflater = LayoutInflater.from（上下文）;
listview.setAdapter（本）;}@覆盖
公众诠释的getCount（）{
返回mUsers.length;
}@覆盖
公共对象的getItem（INT位置）{
返回mUsers [位置]
}@覆盖
众长getItemId（INT位置）{
返回的位置;
}静态私有类持有人{
TextView的用户名;
}@覆盖
公共查看getView（INT位置，查看convertView，ViewGroup中ARG2）{ 持有人持有人; 如果（convertView！= NULL）{ 支架=（座）convertView.getTag（）; }其他{ 持有人=新的持有人（）;
convertView = mInflater.inflate（R.layout.user_picker_list_item，NULL）;
holder.username =（TextView中）convertView.findViewById（R.id.user_picker_list_item_name）;
convertView.setTag（保持器）; } 字符串str =（字符串）的getItem（位置）;
holder.username.setText（STR）;
返回convertView;}
以防万一，这里是'user_picker.xml
在code<？pre>＆LT; XML版本=1.0编码=UTF-8＆GT;＆LT; LinearLayout中的xmlns：机器人=http://schemas.android.com/apk / RES / Android的机器人：layout_height =FILL_PARENT的android：layout_width =FILL_PARENT机器人：方向=垂直机器人：填充=0dp＆GT;＆LT; ListView的机器人：背景=@色/ color_grey1机器人： cacheColorHint =@色/ color_grey1机器人：ID =@ + ID / user_picker_list机器人：分=@色/ color_blueGrey1机器人：layout_height =match_parent的android：layout_width =match_parent/＆GT;
和一个在'user_picker_list_item.xml
<？pre>＆LT; XML版本=1.0编码=UTF-8＆GT;＆LT; LinearLayout中的xmlns：机器人=http://schemas.android.com/apk / RES / Android的机器人：layout_width =FILL_PARENT机器人：方向=垂直机器人：layout_height =FILL_PARENT＆GT;＆LT; EditText上的android：layout_height =WRAP_CONTENT机器人：ID =@ + ID / user_picker_list_item_name机器人：layout_width =WRAP_CONTENT安卓了minWidth =200dp机器人：layout_gravity =中心＆GT;＆LT; /＆的EditText GT;＆LT; / LinearLayout中＆GT;
我试过Gilbou解决方案，但因为我在所有行EditTexts它没有为我工作。但也有一些变化，我可以让它工作：
的EditText currentEdit;公共查看getView（INT Q，查看convertView，父母的ViewGroup）{ ViewHolder持有人; 如果（convertView == NULL）{ convertView =（的LinearLayout）inflater.inflate（R.layout.grade_row，NULL）; 持有人=新ViewHolder（）;
//充气支架
convertView.setTag（保持器）;
}其他{
支架=（ViewHolder）convertView.getTag（）;
} 如果（listView.getSelectedItemPosition（）== ListView.INVALID_POSITION）{
如果（currentEdit！= NULL）
currentEdit.requestFocus（）;
} //更新行项目 返回convertView;
}
此外，添加一个焦点变化监听每一个的EditText列表视图里：
myEditText.setOnFocusChangeListener（新OnFocusChangeListener（）{ 公共无效onFocusChange（视图V，布尔hasFocus）{
如果（！hasFocus）
currentEdit = myEditText;
}
}
I use a listview. Each item in the list contains one edittext. When I click on an edittext, the soft keyboard pops up, the edittext I clicked on gains the focus for a short time and then lose it. I have to click a second time to really get the focus (why?)
(focus on an editext and keyboard up) I scroll the listview...
Because the listview elements are recycled, the focus reappears on edittext at other positions in the list and I guess this is normal BUT why does Android not remove this damned focus!? How could I say to Android ok I do not want the focus anymore on an edittext if my user begins to scroll ?
Here is the code of the activity:
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);
}
And the code of the adapter:
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;
}
Just in case, here is the code in 'user_picker.xml'
<?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"/>
And the one in 'user_picker_list_item.xml'
<?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>
I tried Gilbou solution but it didn't work for me because I had EditTexts in all rows. But with some changes I could make it work:
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;
}
Also, add a focus change listener for every EditText inside the listview:
myEditText.setOnFocusChangeListener(new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
if(!hasFocus)
currentEdit = myEditText;
}
}
这篇关于EDITTEXT保持专注，当键盘的上和滚动列表视图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
