blocks|key|538250|text|使用这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|538251|++++final+int+childCount+=+mainL.getChildCount();
++++for+(int+i+=+0;+i+<+childCount;+i%2B%2B)+{
++++++++++View+element+=+mainL.getChildAt(i);

++++++++//+EditText
++++++++if+(element+instanceof+EditText)+{
++++++++++++EditText+editText+=+(EditText)element;
++++++++++++System.out.println("ELEMENTS+EditText+getId=>"%2BeditText.getId()%2B+"+getTag=>"%2Belement.getTag()%2B
++++++++++++"+getText=>"%2BeditText.getText());
++++++++}

++++++++//+CheckBox
++++++++if+(element+instanceof+CheckBox)+{
++++++++++++CheckBox+checkBox+=+(CheckBox)element;
++++++++++++System.out.println("ELEMENTS+CheckBox+getId=>"%2BcheckBox.getId()%2B+"+getTag=>"%2BcheckBox.getTag()%2B
++++++++++++"+getText=>"%2BcheckBox.getText()%2B"+isChecked=>"%2BcheckBox.isChecked());
++++++++}

++++++++//+DatePicker
++++++++if+(element+instanceof+DatePicker)+{
++++++++++++DatePicker+datePicker+=+(DatePicker)element;
++++++++++++System.out.println("ELEMENTS+DatePicker+getId=>"%2BdatePicker.getId()%2B+"+getTag=>"%2BdatePicker.getTag()%2B
++++++++++++"+getDayOfMonth=>"%2BdatePicker.getDayOfMonth());
++++++++}

++++++++//+Spinner
++++++++if+(element+instanceof+Spinner)+{
++++++++++++Spinner+spinner+=+(Spinner)element;
++++++++++++System.out.println("ELEMENTS+Spinner+getId=>"%2Bspinner.getId()%2B+"+getTag=>"%2Bspinner.getTag()%2B
++++++++++++"+getSelectedItemId=>"%2Bspinner.getSelectedItemId()%2B
++++++++++++"+getSelectedItemPosition=>"%2Bspinner.getSelectedItemPosition()%2B
++++++++++++"+getTag(key)=>"%2Bspinner.getTag(spinner.getSelectedItemPosition()));
++++++++}

++++}|code-block|syntax|javascript|538252|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

use this 

<pre><code> final int childCount = mainL.getChildCount();
 for (int i = 0; i &lt; childCount; i++) {
 View element = mainL.getChildAt(i);

 // EditText
 if (element instanceof EditText) {
 EditText editText = (EditText)element;
 System.out.println("ELEMENTS EditText getId=&gt;"+editText.getId()+ " getTag=&gt;"+element.getTag()+
 " getText=&gt;"+editText.getText());
 }

 // CheckBox
 if (element instanceof CheckBox) {
 CheckBox checkBox = (CheckBox)element;
 System.out.println("ELEMENTS CheckBox getId=&gt;"+checkBox.getId()+ " getTag=&gt;"+checkBox.getTag()+
 " getText=&gt;"+checkBox.getText()+" isChecked=&gt;"+checkBox.isChecked());
 }

 // DatePicker
 if (element instanceof DatePicker) {
 DatePicker datePicker = (DatePicker)element;
 System.out.println("ELEMENTS DatePicker getId=&gt;"+datePicker.getId()+ " getTag=&gt;"+datePicker.getTag()+
 " getDayOfMonth=&gt;"+datePicker.getDayOfMonth());
 }

 // Spinner
 if (element instanceof Spinner) {
 Spinner spinner = (Spinner)element;
 System.out.println("ELEMENTS Spinner getId=&gt;"+spinner.getId()+ " getTag=&gt;"+spinner.getTag()+
 " getSelectedItemId=&gt;"+spinner.getSelectedItemId()+
 " getSelectedItemPosition=&gt;"+spinner.getSelectedItemPosition()+
 " getTag(key)=&gt;"+spinner.getTag(spinner.getSelectedItemPosition()));
 }

 }
</code></pre>

blocks|key|754823|text|使用Kotlin使用for-in循环会更容易：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|754824|for+(childView+in+ll.children)+{
+++++//childView+is+a+child+of+ll+++++++++
}|code-block|syntax|javascript|754825|这里的ll是在布局XML中定义的LinearLayout的id。|offset|length|style|CODE|754826|entityMap^0|0|0|3|2|G|C|T|2|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]|$I|T|J|U|K|L]|$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|N|$]]

It is easier with Kotlin using for-in loop:

<pre><code>for (childView in ll.children) {
 //childView is a child of ll 
}
</code></pre>

Here <code>ll</code> is <code>id</code> of <code>LinearLayout</code> defined in layout XML.

blocks|key|538341|text|在Kotlin中以递归方式获取视图的所有视图及其子视图：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|538342|private+fun+View.getAllViews():+List<View>+{
++++if+(this+!is+ViewGroup+%7C%7C+childCount+==+0)+return+listOf(this)

++++return+children
++++++++++++.toList()
++++++++++++.flatMap+{+it.getAllViews()+}
++++++++++++.plus(this+as+View)
}|code-block|syntax|javascript|538343|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Get all views of a view plus its children recursively in Kotlin:

<pre><code>private fun View.getAllViews(): List&lt;View&gt; {
 if (this !is ViewGroup || childCount == 0) return listOf(this)

 return children
 .toList()
 .flatMap { it.getAllViews() }
 .plus(this as View)
}
</code></pre>

blocks|key|538391|text|从任何类型的布局中获取所有视图|type|unstyled|depth|inlineStyleRanges|entityRanges|data|538392|public+List<View>+getAllViews(ViewGroup+layout){
++++++++List<View>+views+=+new+ArrayList<>();
++++++++for(int+i+=0;+i<+layout.getChildCount();+i%2B%2B){
++++++++++++views.add(layout.getChildAt(i));
++++++++}
++++++++return+views;
}|code-block|syntax|javascript|538393|从任何类型的布局中获取所有TextView|538394|public+List<TextView>+getAllTextViews(ViewGroup+layout){
++++++++List<TextView>+views+=+new+ArrayList<>();
++++++++for(int+i+=0;+i<+layout.getChildCount();+i%2B%2B){
++++++++++++View+v+=layout.getChildAt(i);
++++++++++++if(v+instanceof+TextView){
++++++++++++++++views.add((TextView)v);
++++++++++++}
++++++++}
++++++++return+views;
}|538395|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Get all views from any type of layout

<pre><code>public List&lt;View&gt; getAllViews(ViewGroup layout){
 List&lt;View&gt; views = new ArrayList&lt;&gt;();
 for(int i =0; i&lt; layout.getChildCount(); i++){
 views.add(layout.getChildAt(i));
 }
 return views;
}
</code></pre>

Get all TextView from any type of layout

<pre><code>public List&lt;TextView&gt; getAllTextViews(ViewGroup layout){
 List&lt;TextView&gt; views = new ArrayList&lt;&gt;();
 for(int i =0; i&lt; layout.getChildCount(); i++){
 View v =layout.getChildAt(i);
 if(v instanceof TextView){
 views.add((TextView)v);
 }
 }
 return views;
}
</code></pre>

I have a <code>LinearLayout</code>, which contains several child <code>TextViews</code>. How can I get child views of that LinerLayout using a loop?

Get all child views inside LinearLayout at once

Kotlin

我有一个包含多个子TextViews的LinearLayout。如何使用循环获取LinerLayout子视图？

问一次获取LinearLayout中的所有子视图
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