问题描述
我想用android建立动态调查.问题是从服务器创建的，该服务器通过rest服务加载到我的Android应用中.每个问题都有一个指示答案类型的参数.根据问题类型，我想要一个给定的小部件(Edittext，checkboxn ...)在列表视图中输入.假设这是问题列表:
I want to build a dynamic survey with android. Question are created from a server a loaded in my Android app through rest service. Each question has a parameter that indicates the type of the answer. According to the question type, I want a given widget (Edittext, checkboxn...) for input in a listview. Let's asume this is the list of question:
"question": [
{
"name": "fieldA",
"type": "STRING",
"minCharacters": 10,
"maxCharacters": 100
},
{
"name": "fieldB",
"type": "INTEGER",
"min": 10,
"max": 100
},
{
"name": "fieldC",
"type": "BOOLEAN",
"defaultValue": true
}
],
我现在要做的是为每种类型的问题创建不同的布局并调用适配器:
What I have done now is to create different layout for each type of question and call in adapter:
boolean_layout.xml
boolean_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#5fb0c9"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/questionLabel"
android:layout_alignParentTop="true"
android:ems="10"
android:layout_weight="1"/>
<CheckBox
android:id="@+id/questionValueCbx"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="false"
android:text="Oui/Non"/>
</LinearLayout>
string_layout.xml
string_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#5fb0c9"
android:weightSum="1"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:id="@+id/questionLabel"
android:layout_weight="0.8"/>
<EditText
android:id="@+id/questionValue"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:ems="10"
android:inputType="textPersonName" />
</LinearLayout>
....
然后我在适配器中调用适当的布局
And I call the appropriate layout in adapter
public View getView(final int i, View view, ViewGroup viewGroup) {
final ViewHolder holder ;
// questions here refers to the list of questions
String questionType = questions.get(i).getQuestionType().trim();
if (view == null || view.getTag() == null) {
holder = new ViewHolder();
switch (questionType){
case "BOOLEAN": {
view = mInflater.inflate(R.layout.boolean_layout, viewGroup,false);
holder.tv_questionLable = (TextView)view.findViewById(R.id.questionLabel);
holder.questionAnswer = (CheckBox)view.findViewById(R.id.questionValueCbx);
}
case "STRING": {
view = mInflater.inflate(R.layout.string_question, viewGroup,false);
holder.tv_questionLable = (TextView)view.findViewById(R.id.questionLabel);
holder.questionAnswer = (EditText)view.findViewById(R.id.questionValue);
}
case "INT": {
view = mInflater.inflate(R.layout.number_question, viewGroup,false);
holder.tv_questionLable = (TextView)view.findViewById(R.id.questionLabel);
holder.questionAnswer = (EditText)view.findViewById(R.id.questionValue);
}
...
}
}
结果不符合我的期望.它将Edittext放置在任何地方，即使应该放置复选框也是如此.帮助.
The result does not meets my expectations. It puts Edittext everywhere, even where it is supposed to put checkbox.Help.
推荐答案
如果您将另一个项目夸大到列表视图中，则您需要使用BaseAdapter类的getItemViewType方法.
If you are inflating the different item into the listview than u need to use this method getItemViewType of the BaseAdapter class.
看看我的解决方案，我已经区分了视图并进行了相应的管理
Have a look into my solution i have distinguished the view and managed accordingly
public class YOUR_ADAPTER_CLASS extends BaseAdapter {
private int ITEM_BOOLEAN = 1;
private int ITEM_STRING = 2;
private int ITEM_INT = 3;
@Override
public int getCount() {
return questions.size();
}
@Override
public Object getItem(int position) {
return questions.get(position);
}
@Override
public long getItemId(int position) {
return questions.indexOf(getItem(position));
}
@Override
public int getItemViewType(int position) {
if (questions.get(position).getQuestionType().equalsIgnoreCase("BOOLEAN")) {
return ITEM_BOOLEAN;
} else if (questions.get(position).getQuestionType().equalsIgnoreCase("STRING")) {
return ITEM_STRING;
} else {
return ITEM_INT;
}
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
int listViewItemType = getItemViewType(position);
if (convertView == null) {
if (listViewItemType == ITEM_BOOLEAN) {
convertView = LayoutInflater.from(getContext()).inflate(R.layout.boolean_layout, null);
} else if (listViewItemType == ITEM_STRING) {
convertView = LayoutInflater.from(getContext()).inflate(R.layout.string_question, null);
} else {
convertView = LayoutInflater.from(getContext()).inflate(R.layout.number_question, null);
}
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
if (listViewItemType == ITEM_BOOLEAN) {
/**
* GET THE BOOLEAN ITEM AND INFALTE DATA INTO IT
*/
} else if (listViewItemType == ITEM_STRING) {
/**
* GET THE STRING ITEM AND INFALTE DATA INTO IT
*/
} else {
/**
* GET THE INT ITEM AND INFALTE DATA INTO IT
*/
}
return convertView;
}
}
这篇关于列表视图中的动态表单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！