安卓的EditText中的ListView问题 [英] Android: EditText in ListView issue

问题描述

我有一个列表视图在我的应用程序，它基本上是一个问卷所以有用户需要填写一些EditTexts。我遇到了以下问题：

1. 部分的EditText都需要数字输入，所以，不管我在相应的XML类型数值设置inputType，因为当我点击的EditText的数字键盘被显示，但几乎立即消失和普通键盘图所示。

2. 正如你可以想像，我需要存储的值，在这些EditTexts用户输入。这个问题我已经与这是在我输入一些EditTexts一些文字，我向下滚动，文本消失了，当我回去。你可以在我的code，我尝试去prevent这一点，我应该指出，这工作完全正常使用复选框见。

3. 目前，我有问题失去了焦点，但我解决它寻找其他的问题（加descendantFocusablity =beforeDescendants到ListView和windowSoftInputMode =adjustPan）开始。工作正常，只是，当一个EditText低于它失去，一旦集中，我开始输入到它的屏幕的一半。 getView方法列表适配器：

    公开查看getView（最终诠释的位置，查看结果，父母的ViewGroup）
   {
   最后ViewHolder VH;
   最后一个问题的问题= values​​.get（位置）;
   如果（持有者[位置] == NULL）
       VH =新ViewHolder（）;
   其他
       VH =持有人[位置]
   
   LayoutInflater充气=（LayoutInflater）context.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
   如果（question.getQuestionType（）。等于（Question.TYPE_CLOSED））
   {
       结果= inflater.inflate（R.layout.closed_question_list_item，NULL）;
       vh.cb =（复选框）result.findViewById（R.id.checkbox）;
       vh.cb.setOnCheckedChangeListener（新OnCheckedChangeListener（）
       {
   
           @覆盖
           公共无效onCheckedChanged（CompoundButton buttonView，布尔器isChecked）
           {
               vh.isChecked =器isChecked;
               持有人[位置] = VH;
           }
       }）;
       vh.cb.setChecked（vh.isChecked）;
   }
   
   其他
   {
       结果= inflater.inflate（R.layout.numeric_question_list_item，NULL）;
       vh.et =（EditText上）result.findViewById（R.id.question_et）;
       vh.et.addTextChangedListener（新TextWatcher（）
       {
           @覆盖
           公共无效afterTextChanged（编辑S）
           {
               vh.tvValue = s.toString（）;
               持有人[位置] = VH;
               Log.i（TAG，输入afterTextChanged为+ question.getText（））;
           }
   
           @覆盖
           公共无效beforeTextChanged（CharSequence中，诠释开始，诠释计数，之后INT）
           {
           }
   
           @覆盖
           公共无效onTextChanged（CharSequence中，诠释开始，诠释之前，诠释计数）
           {
           }
       }）;
       vh.et.setText（vh.tvValue）;
   }
   vh.tv =（TextView中）result.findViewById（R.id.question_text）;
   
   vh.tv.setText（question.getText（））;
   
   持有人[位置] = VH;
   result.setTag（VH）;
   返回结果;
   }
    

解决方案

解决方案发出＃3：

1. 在列表视图设置 descendantFocusablity =beforeDescendants。

2. 设置 windowSoftInputMode =adjustPan在清单

3. 设置 listview.setItemsCanFocus（真）

I have a listview in my application that is basically a questionaire so there are some EditTexts that the user needs to fill. I've encountered the following issues:

1. Some of the EditText require numeric input, so I set the inputType in the corresponding xml type as numeric, however, as when I click on the EditText the numeric keyboard is shown but almost immediately it disappears and the regular keyboard is shown.

2. As you can imagine, I need to store the values that the user inputs in these EditTexts. The problem I have with this is that after I input some text in SOME EditTexts and I scroll down, the text is gone when I go back. You can see in my code that I made an attempt to prevent this and I should mention that it works perfectly fine with checkboxes.

3. At the beginning I was having problems with losing the focus but I solved it looking at other questions (added descendantFocusablity="beforeDescendants" to the ListView and windowSoftInputMode="adjustPan"). Works fine except that when an EditText is below the half of the screen it loses focus as soon as I start typing into it. getView method for list adapter:

   public View getView(final int position,View result,ViewGroup parent)
   {
   final ViewHolder vh;
   final Question question = values.get(position);
   if(holders[position]==null)
       vh = new ViewHolder();
   else
       vh = holders[position];
   
   LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
   if(question.getQuestionType().equals(Question.TYPE_CLOSED))
   {
       result = inflater.inflate(R.layout.closed_question_list_item, null);
       vh.cb  = (CheckBox)result.findViewById(R.id.checkbox);
       vh.cb.setOnCheckedChangeListener(new OnCheckedChangeListener() 
       {
   
           @Override
           public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) 
           {
               vh.isChecked      = isChecked;
               holders[position] = vh;
           }
       });
       vh.cb.setChecked(vh.isChecked);
   }
   
   else
   {
       result = inflater.inflate(R.layout.numeric_question_list_item, null);
       vh.et  = (EditText)result.findViewById(R.id.question_et);
       vh.et.addTextChangedListener(new TextWatcher()
       {
           @Override
           public void afterTextChanged(Editable s) 
           {
               vh.tvValue = s.toString();
               holders[position] = vh;
               Log.i(TAG,"Entered afterTextChanged for "+ question.getText());
           }
   
           @Override
           public void beforeTextChanged(CharSequence s, int start,int count, int after) 
           {   
           }
   
           @Override
           public void onTextChanged(CharSequence s, int start,int before, int count) 
           {
           }
       });
       vh.et.setText(vh.tvValue);
   }
   vh.tv = (TextView)result.findViewById(R.id.question_text);
   
   vh.tv.setText(question.getText());
   
   holders[position] = vh;
   result.setTag(vh);
   return result;
   }
   

解决方案

Solutions to issue #3:

1. Set descendantFocusablity="beforeDescendants" in the listview.

2. Set windowSoftInputMode="adjustPan" in the manifest

3. Set listview.setItemsCanFocus(true)

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