android应用开发--------------看RadioGroup源代码，写相似单选选项卡的集成控件（如底部导航，tab等等）

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上面就是需求设计，4个类似的布局控件。每次仅仅能选择一个。然后得到上面相应的钱数。（上面仅仅是效果图，实际数据是从server获取，然后付到控件上）

看到这样的。我们就回忆到，几种实现方法。

1.把这个总体写一个布局。在xml布局中。复制粘贴，代码。凑够4个。很不建议这样。由于4个的布局样式是一样的，仅仅是数据可能不同样，所以我们应该写一个组合控件然后反复利用。

2.就是写一个

单个的布局控件，然后设置一些设置数据的方法，然后反复利用它。引入四个控件。这样在一定程度上达到了代码反复利用性，可是以后在布局中这一块要是去掉。可能你要改动的代码也是会比較多了。

3.另一种就是使用GridView。我们看多多个同样的布局。就会相到使用listView和GridView。

这样的方法是能够使用的，只是在有个问题是，假设没有数据的前提下，它将会是一个空布局。不太好看。对于后期改动或去掉这一部分布局的话，相对来说好算比較好改动，去电一个GridView和他相相应的adapter就好了。

以下我们在针对另外一种来说一下，解决一下他的不好改动的特点。由于。我们一般写完程序之后就会懒得改动，所以我们在第一次编写的时候，要为以后的改动做好准备，一切为了方便改动。由于程序猿都知道，产品的需求是一直在变化。。。。。。你们懂就好，假如。产品想把这个东西换一个样式，或是直接其用掉这一部分布局。那我们就尽量做到，删除几行代码搞定它。

那么就须要我们在2方式的基础上再封装一层。

把四个弄成一个控件，然后再总体加进去。

你们细致看，上面的是不是一个单选按钮组?就和androd的radiobutton控件相似，然后用一个radioGroup包括。

所以我们能够针对这个写一个类似RadioGroup和RadioButton那样类似的东西。

首先先解决RadioButton类似的控件。先写一个布局，

这种布局。

布局为，

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical" >

<LinearLayout
android:id="@+id/llbg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginTop="16dp"
android:background="@drawable/btn_recharge"
android:orientation="vertical" >

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginRight="5dp"
android:orientation="horizontal" >

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="￥"
android:textColor="@color/white" />

<TextView
android:id="@+id/tvMoney"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="0"
android:textColor="@color/white"
android:textSize="18sp" />
</LinearLayout>

<TextView
android:id="@+id/tvcords"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginRight="5dp"
android:text="0币"
android:textColor="@color/yellow"
android:textSize="12sp" />
</LinearLayout>

<TextView
android:id="@+id/tvZengs"
android:visibility="visible"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:background="@drawable/icon_recharge_discount"
android:gravity="center_horizontal"
android:text="送0"
android:textColor="@color/white"
android:textSize="10sp" />

</RelativeLayout>

就这么简单写一下。

然后把其总体封装为一个组合控件。编写方法什么的。

public class RechargeValueLayout extends FrameLayout{

private View view;
private TextView mZengs;
private TextView mMoney;
private TextView mCords;
private String money;
private LinearLayout mllbg;

private Boolean isChecked;

public RechargeValueLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
}

public RechargeValueLayout(Context context, AttributeSet attrs) {
super(context, attrs);
view = View.inflate(context, R.layout.recharge_value_item, this);
mllbg = (LinearLayout)view.findViewById(R.id.llbg);
mZengs = (TextView)view.findViewById(R.id.tvZengs);
mMoney = (TextView)view.findViewById(R.id.tvMoney);
mCords = (TextView)view.findViewById(R.id.tvcords);
}

public RechargeValueLayout(Context context) {
super(context);
}

public void setChecked(Boolean isChecked){
Log.i("TAG2", "isSelected===>>>>"+isChecked);
if(isChecked==this.isChecked){
return;
}
if(isChecked){
mllbg.setBackgroundResource(R.drawable.btn_recharge_active);
}else{
mllbg.setBackgroundResource(R.drawable.btn_recharge);
}
this.isChecked = isChecked;
}

public boolean isChecked(){
return this.isChecked;
}

public void setZengsValue(int value){
if(value>0){
mZengs.setVisibility(View.VISIBLE);
mZengs.setText("送"+value+"");
}else{
mZengs.setVisibility(View.GONE);
}
}
public String getMoneyValue(){
return this.money;
}
public void setMoneyValue(int value){
if(value>0){
mMoney.setText(value+"");
this.money = value+"";
}else{
mMoney.setText("0币");
}
}

public void setCordsValue(int value){
if(value>0){
mCords.setText(value+"币");
}else{
mCords.setText("0币");
}
}

}

这样，你就直接能够引用其路径，直接使用这个组合控件。事实上到这里。就实现了2方式所说的。

可是仅用这个，那么我们仅仅是实现了布局重用。可是不好进行替换改动，你能够想想，这么一个控件里有3个textView。而且我们要对其textView进行赋值。也就是说我们要对12TextView经行操作，假设这12TextView放在我们activity里，一是代码过于臃肿。二是你想想，假设以后去掉的话，我们就得对这全部涉及到这12个TextView的代码都得进行删除。

所以我们如今要把这四个控件再给他们一个类似RadioGroup的容器，在RadioGroup里有一个点击事件，仅仅要对RadioCroup设置上监听，那么在RadioGroup的控件就自己主动设置上了监听，所以，咱activity里面我们仅仅须要这个RadioGroup的控件代码。1个对12个。你们想想到知道兴许改动操作那种方便。

開始是想的定义的布局控件，这个布局控件得到自己里面的孩子数。然后再遍历循环给孩子设置上监听。但是失败了。

详细的说说失败的代码。

<com.song.components.RechargeValueGroup
android:id="@+id/rechargeGroup"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >

<com.song.components.RechargeValueLayout
android:id="@+id/tab1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
</com.song.components.RechargeValueLayout>

<com.song.components.RechargeValueLayout
android:id="@+id/tab2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
</com.song.components.RechargeValueLayout>

<com.song.components.RechargeValueLayout
android:id="@+id/tab3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
</com.song.components.RechargeValueLayout>
<!--
<com.song.components.RechargeValueLayout
android:id="@+id/tab4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
</com.song.components.RechargeValueLayout>
-->
</com.song.components.RechargeValueGroup>

这是布局，首先把RechargeValueLayout放到RechargeValueGroup里面，然后RechargeValueGroup里面得到自己的孩子数，

public class RechargeValueGroup extends FrameLayout {

private OnItemTabClickListener listener;

public RechargeValueGroup(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
}

public RechargeValueGroup(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}

public RechargeValueGroup(Context context) {
super(context);
// TODO Auto-generated constructor stub
}

private void init() {
int count = getChildCount();
for (int i = 0; i < count; i++) {
getChildAt(i).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
if(listener!=null){
listener.onItemClick(RechargeValueGroup.this,v.getId());
}
}
});
}
}

/**
* 定义Group的监听，点击每个子button就会返回相相应子button的信息，以方便操作
*/
public interface OnItemTabClickListener {
public void onItemClick(RechargeValueGroup view, int checkedId);
}

}

但是这样有个问题。在构造函数运行的时候是获得不到孩子数的，这样就没法给孩子设置上监听了。

然后我就想记得曾经是在onMeasure里面能够得到孩子数。把init的部分放到onMeasure或onLayout方法里，孩子数是得到了。但是这两个方法是，仅仅要布局有变化，其都会走一遍，也就是说仅仅要你布局有变化，他们就会运行，所以出现了一些问题。所以在这两个方法中设置监听是不太好的。

那怎么样技能自己主动获得孩子数。又能给相应的孩子设置上监听呢？

于是我就去看了一下RadioGroup的源代码。

/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0 *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package android.widget;

import com.android.internal.R;

import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;

/**
* <p>This class is used to create a multiple-exclusion scope for a set of radio
* buttons. Checking one radio button that belongs to a radio group unchecks
* any previously checked radio button within the same group.</p>
*
* <p>Intially, all of the radio buttons are unchecked. While it is not possible
* to uncheck a particular radio button, the radio group can be cleared to
* remove the checked state.</p>
*
* <p>The selection is identified by the unique id of the radio button as defined
* in the XML layout file.</p>
*
* <p><strong>XML Attributes</strong></p>
* <p>See {@link android.R.styleable#RadioGroup RadioGroup Attributes},
* {@link android.R.styleable#LinearLayout LinearLayout Attributes},
* {@link android.R.styleable#ViewGroup ViewGroup Attributes},
* {@link android.R.styleable#View View Attributes}</p>
* <p>Also see
* {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams}
* for layout attributes.</p>
*
* @see RadioButton
*
*/
public class RadioGroup extends LinearLayout {
// holds the checked id; the selection is empty by default
private int mCheckedId = -1;
// tracks children radio buttons checked state
private CompoundButton.OnCheckedChangeListener mChildOnCheckedChangeListener;
// when true, mOnCheckedChangeListener discards events
private boolean mProtectFromCheckedChange = false;
private OnCheckedChangeListener mOnCheckedChangeListener;
private PassThroughHierarchyChangeListener mPassThroughListener;

/**
* {@inheritDoc}
*/
public RadioGroup(Context context) {
super(context);
setOrientation(VERTICAL);
init();
}

/**
* {@inheritDoc}
*/
public RadioGroup(Context context, AttributeSet attrs) {
super(context, attrs);

// retrieve selected radio button as requested by the user in the
// XML layout file
TypedArray attributes = context.obtainStyledAttributes(
attrs, com.android.internal.R.styleable.RadioGroup, com.android.internal.R.attr.radioButtonStyle, 0);

int value = attributes.getResourceId(R.styleable.RadioGroup_checkedButton, View.NO_ID);
if (value != View.NO_ID) {
mCheckedId = value;
}

final int index = attributes.getInt(com.android.internal.R.styleable.RadioGroup_orientation, VERTICAL);
setOrientation(index);

attributes.recycle();
init();
}

private void init() {
mChildOnCheckedChangeListener = new CheckedStateTracker();
mPassThroughListener = new PassThroughHierarchyChangeListener();
super.setOnHierarchyChangeListener(mPassThroughListener);
}

/**
* {@inheritDoc}
*/
@Override
public void setOnHierarchyChangeListener(OnHierarchyChangeListener listener) {
// the user listener is delegated to our pass-through listener
mPassThroughListener.mOnHierarchyChangeListener = listener;
}

/**
* {@inheritDoc}
*/
@Override
protected void onFinishInflate() {
super.onFinishInflate();

// checks the appropriate radio button as requested in the XML file
if (mCheckedId != -1) {
mProtectFromCheckedChange = true;
setCheckedStateForView(mCheckedId, true);
mProtectFromCheckedChange = false;
setCheckedId(mCheckedId);
}
}

@Override
public void addView(View child, int index, ViewGroup.LayoutParams params) {
if (child instanceof RadioButton) {
final RadioButton button = (RadioButton) child;
if (button.isChecked()) {
mProtectFromCheckedChange = true;
if (mCheckedId != -1) {
setCheckedStateForView(mCheckedId, false);
}
mProtectFromCheckedChange = false;
setCheckedId(button.getId());
}
}

super.addView(child, index, params);
}

/**
* <p>Sets the selection to the radio button whose identifier is passed in
* parameter. Using -1 as the selection identifier clears the selection;
* such an operation is equivalent to invoking {@link #clearCheck()}.</p>
*
* @param id the unique id of the radio button to select in this group
*
* @see #getCheckedRadioButtonId()
* @see #clearCheck()
*/
public void check(int id) {
// don't even bother
if (id != -1 && (id == mCheckedId)) {
return;
}

if (mCheckedId != -1) {
setCheckedStateForView(mCheckedId, false);
}

if (id != -1) {
setCheckedStateForView(id, true);
}

setCheckedId(id);
}

private void setCheckedId(int id) {
mCheckedId = id;
if (mOnCheckedChangeListener != null) {
mOnCheckedChangeListener.onCheckedChanged(this, mCheckedId);
}
}

private void setCheckedStateForView(int viewId, boolean checked) {
View checkedView = findViewById(viewId);
if (checkedView != null && checkedView instanceof RadioButton) {
((RadioButton) checkedView).setChecked(checked);
}
}

/**
* <p>Returns the identifier of the selected radio button in this group.
* Upon empty selection, the returned value is -1.</p>
*
* @return the unique id of the selected radio button in this group
*
* @see #check(int)
* @see #clearCheck()
*
* @attr ref android.R.styleable#RadioGroup_checkedButton
*/
public int getCheckedRadioButtonId() {
return mCheckedId;
}

/**
* <p>Clears the selection. When the selection is cleared, no radio button
* in this group is selected and {@link #getCheckedRadioButtonId()} returns
* null.</p>
*
* @see #check(int)
* @see #getCheckedRadioButtonId()
*/
public void clearCheck() {
check(-1);
}

/**
* <p>Register a callback to be invoked when the checked radio button
* changes in this group.</p>
*
* @param listener the callback to call on checked state change
*/
public void setOnCheckedChangeListener(OnCheckedChangeListener listener) {
mOnCheckedChangeListener = listener;
}

/**
* {@inheritDoc}
*/
@Override
public LayoutParams generateLayoutParams(AttributeSet attrs) {
return new RadioGroup.LayoutParams(getContext(), attrs);
}

/**
* {@inheritDoc}
*/
@Override
protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
return p instanceof RadioGroup.LayoutParams;
}

@Override
protected LinearLayout.LayoutParams generateDefaultLayoutParams() {
return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
}

@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
super.onInitializeAccessibilityEvent(event);
event.setClassName(RadioGroup.class.getName());
}

@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setClassName(RadioGroup.class.getName());
}

/**
* <p>This set of layout parameters defaults the width and the height of
* the children to {@link #WRAP_CONTENT} when they are not specified in the
* XML file. Otherwise, this class ussed the value read from the XML file.</p>
*
* <p>See
* {@link android.R.styleable#LinearLayout_Layout LinearLayout Attributes}
* for a list of all child view attributes that this class supports.</p>
*
*/
public static class LayoutParams extends LinearLayout.LayoutParams {
/**
* {@inheritDoc}
*/
public LayoutParams(Context c, AttributeSet attrs) {
super(c, attrs);
}

/**
* {@inheritDoc}
*/
public LayoutParams(int w, int h) {
super(w, h);
}

/**
* {@inheritDoc}
*/
public LayoutParams(int w, int h, float initWeight) {
super(w, h, initWeight);
}

/**
* {@inheritDoc}
*/
public LayoutParams(ViewGroup.LayoutParams p) {
super(p);
}

/**
* {@inheritDoc}
*/
public LayoutParams(MarginLayoutParams source) {
super(source);
}

/**
* <p>Fixes the child's width to
* {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} and the child's
* height to  {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT}
* when not specified in the XML file.</p>
*
* @param a the styled attributes set
* @param widthAttr the width attribute to fetch
* @param heightAttr the height attribute to fetch
*/
@Override
protected void setBaseAttributes(TypedArray a,
int widthAttr, int heightAttr) {

if (a.hasValue(widthAttr)) {
width = a.getLayoutDimension(widthAttr, "layout_width");
} else {
width = WRAP_CONTENT;
}

if (a.hasValue(heightAttr)) {
height = a.getLayoutDimension(heightAttr, "layout_height");
} else {
height = WRAP_CONTENT;
}
}
}

/**
* <p>Interface definition for a callback to be invoked when the checked
* radio button changed in this group.</p>
*/
public interface OnCheckedChangeListener {
/**
* <p>Called when the checked radio button has changed. When the
* selection is cleared, checkedId is -1.</p>
*
* @param group the group in which the checked radio button has changed
* @param checkedId the unique identifier of the newly checked radio button
*/
public void onCheckedChanged(RadioGroup group, int checkedId);
}

private class CheckedStateTracker implements CompoundButton.OnCheckedChangeListener {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// prevents from infinite recursion
if (mProtectFromCheckedChange) {
return;
}

mProtectFromCheckedChange = true;
if (mCheckedId != -1) {
setCheckedStateForView(mCheckedId, false);
}
mProtectFromCheckedChange = false;

int id = buttonView.getId();
setCheckedId(id);
}
}

/**
* <p>A pass-through listener acts upon the events and dispatches them
* to another listener. This allows the table layout to set its own internal
* hierarchy change listener without preventing the user to setup his.</p>
*/
private class PassThroughHierarchyChangeListener implements
ViewGroup.OnHierarchyChangeListener {
private ViewGroup.OnHierarchyChangeListener mOnHierarchyChangeListener;

/**
* {@inheritDoc}
*/
public void onChildViewAdded(View parent, View child) {
if (parent == RadioGroup.this && child instanceof RadioButton) {
int id = child.getId();
// generates an id if it's missing
if (id == View.NO_ID) {
id = View.generateViewId();
child.setId(id);
}
((RadioButton) child).setOnCheckedChangeWidgetListener(
mChildOnCheckedChangeListener);
}

if (mOnHierarchyChangeListener != null) {
mOnHierarchyChangeListener.onChildViewAdded(parent, child);
}
}

/**
* {@inheritDoc}
*/
public void onChildViewRemoved(View parent, View child) {
if (parent == RadioGroup.this && child instanceof RadioButton) {
((RadioButton) child).setOnCheckedChangeWidgetListener(null);
}

if (mOnHierarchyChangeListener != null) {
mOnHierarchyChangeListener.onChildViewRemoved(parent, child);
}
}
}
}

这就是RadioGroup的源代码，加上凝视什么的一共400来行代码，所以不是非常多，然后就開始看源代码。当中一開始在init（）中，有这么一个监听。

mPassThroughListener = new PassThroughHierarchyChangeListener();
super.setOnHierarchyChangeListener(mPassThroughListener);

然后找到其相应的监听，

private class PassThroughHierarchyChangeListener implements
ViewGroup.OnHierarchyChangeListener {
private ViewGroup.OnHierarchyChangeListener mOnHierarchyChangeListener;

/**
* {@inheritDoc}
*/
public void onChildViewAdded(View parent, View child) {
if (parent == RadioGroup.this && child instanceof RadioButton) {
int id = child.getId();
// generates an id if it's missing
if (id == View.NO_ID) {
id = View.generateViewId();
child.setId(id);
}
((RadioButton) child).setOnCheckedChangeWidgetListener(
mChildOnCheckedChangeListener);
}

if (mOnHierarchyChangeListener != null) {
mOnHierarchyChangeListener.onChildViewAdded(parent, child);
}
}

/**
* {@inheritDoc}
*/
public void onChildViewRemoved(View parent, View child) {
if (parent == RadioGroup.this && child instanceof RadioButton) {
((RadioButton) child).setOnCheckedChangeWidgetListener(null);
}

if (mOnHierarchyChangeListener != null) {
mOnHierarchyChangeListener.onChildViewRemoved(parent, child);
}
}
}

这个监听继承了ViewGroup.OnHierarchyChangeListener接口。你通过查资料你就会发现，这个监听接口是对其 层次结构的监听，不像

onMeasure或onLayout，他仅仅有在层次结构发生变化时，也就是说在加入view和移除view的时候才会调用，所以他有两个回调方法。onChildViewAdded和onChildViewRemoved。

在初始化的时候，子布局是一个一个的被加入到RadioGroup，所以调用onChildViewAdded，能够得带其相应的孩子。就能够对其设置监听了。

这样设置就不会出现反复运行等问题。

然后这一步攻克了就好说了。下一把就是我们触发监听后，要这几个控件协调控制，由于仅仅有一个是能被选中。所以在监听的时候我们应该去改变子控件的状态等。

这一步就不细说了，应该都会顺着理清楚，就是仅仅保持一个被选中就能够。附上代码，就是依据需求略微修改了一下RadioGroup

public class RechargeValueGroup extends LinearLayout {

private ArrayList<Integer> tabChildsId = new ArrayList<Integer>();

private OnItemTabClickListener listener;
private PassThroughHierarchyChangeListener mPassThroughListener;
private CheckedStateTracker mChildOnCheckedChangeListener;

/**
* 记录当前id，默认id为-1
*/
private int mCheckedId = -1;

public RechargeValueGroup(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
}

public RechargeValueGroup(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}

public RechargeValueGroup(Context context) {
super(context);
}

private void init() {
// radiobutton的监听
mChildOnCheckedChangeListener = new CheckedStateTracker();

// 层次结构的监听
mPassThroughListener = new PassThroughHierarchyChangeListener();
// 设置监听
super.setOnHierarchyChangeListener(mPassThroughListener);
}

/**
* 设置tab数据
*
* @param datas
*/
public void setDataOfTabs(List<RechargeNumInfo> datas) {
Log.i("TAG2","getChildCount()===>>>"+getChildCount());
Log.i("TAG2","datas()===>>>"+datas.size());
int count = 0;
if (datas.size() >= getChildCount()) {
count = getChildCount();
//			return;
}else{
count = datas.size();
}
for (int i = 0; i < count; i++) {
Log.i("TAG2","data=1111==>>>");
RechargeValueLayout view = (RechargeValueLayout) findViewById(tabChildsId.get(i));
RechargeNumInfo data = datas.get(i);
Log.i("TAG2","data===>>>"+data);
view.setMoneyValue(data.chargeNum);
view.setCordsValue(data.gzyNum);
view.setZengsValue(data.giftNum);
}

}

/**
* {@inheritDoc}
*/
@Override
protected void onFinishInflate() {
super.onFinishInflate();
Log.i("TAG2", "onFinishInflate=111==>>>>");
check(mCheckedId);
}

/**
* 改变item的选择状态
*
* @param viewId
* @param checked
*            true 为选择。false 为不选择
*/
private void setCheckedStateForView(int viewId, boolean checked) {
Log.i("TAG2", "setCheckedStateForView====>>>");
View checkedView = findViewById(viewId);
Log.i("TAG2", "setCheckedStateForView===checkedView=>>>" + checkedView);
if (checkedView != null && checkedView instanceof RechargeValueLayout) {
((RechargeValueLayout) checkedView).setChecked(checked);
Log.i("TAG2", "setCheckedStateForView===checkedView=111>>>"
+ checkedView);
}
}

public void check(int id) {
// don't even bother
Log.i("TAG2", "check=000======>>>" + id);
Log.i("TAG2", "check=000=11=====>>>" + mCheckedId);
if (id != -1 && (id == mCheckedId)) {
Log.i("TAG2", "check=111======>>>" + id);
return;
}

if (mCheckedId != -1) {
Log.i("TAG2", "check=222======>>>" + id);
setCheckedStateForView(mCheckedId, false);
}

if (id != -1) {
Log.i("TAG2", "check=333======>>>" + id);
setCheckedStateForView(id, true);
}

setCheckedId(id);
}

/**
* 选择Item后要运行的操作
*
* @param id
*/
private void setCheckedId(int id) {
// 更新当前选择的Item的id
mCheckedId = id;
if (listener != null) {
RechargeValueLayout view = (RechargeValueLayout)findViewById(id);

listener.onItemClick(this, id,view.getMoneyValue());
}
}

/**
* 设置点击item的监听
*
* @param l
*/
public void setOnItemTabClickListener(OnItemTabClickListener l) {
this.listener = l;
}

/**
* item选择监听 Title: RechargeValueGroup.java Description:
*
* @author Liusong
* @date 2015-6-26
* @version V1.0
*/
public interface OnItemTabClickListener {
public void onItemClick(RechargeValueGroupview, int checkedId,String money);
}

/**
* 图层变换监听 Title: RechargeValueGroup.java Description:
*
* @author Liusong
* @date 2015-6-26
* @version V1.0
*/
private class PassThroughHierarchyChangeListener implements
ViewGroup.OnHierarchyChangeListener {
private ViewGroup.OnHierarchyChangeListener mOnHierarchyChangeListener;

/**
* {@inheritDoc}
*/
public void onChildViewAdded(View parent, View child) {
if (parent == RechargeValueTabHost.this
&& child instanceof RechargeValueLayout) {
int id = child.getId();
//				Log.i("TAG2", "onChildViewAdded=111==>>>>" + id);
// generates an id if it's missing
if (id == View.NO_ID) {
id = View.generateViewId();
child.setId(id);
}
tabChildsId.add(id);
((RechargeValueLayout) child)
.setOnClickListener(mChildOnCheckedChangeListener);
}

if (mOnHierarchyChangeListener != null) {
mOnHierarchyChangeListener.onChildViewAdded(parent, child);
}
}

/**
* {@inheritDoc}
*/
public void onChildViewRemoved(View parent, View child) {
if (parent == RechargeValueTabHost.this
&& child instanceof RechargeValueLayout) {
((RechargeValueLayout) child).setOnClickListener(null);
tabChildsId.remove(child.getId());
}
//			Log.i("TAG2", "onChildViewRemoved=111==>>>>" + child.getId());
if (mOnHierarchyChangeListener != null) {
mOnHierarchyChangeListener.onChildViewRemoved(parent, child);
}
}
}

/**
* 每一项Item的点击事件 Title: RechargeValueGroup.java Description:
*
* @author Liusong
* @date 2015-6-26
* @version V1.0
*/
class CheckedStateTracker implements OnClickListener {

@Override
public void onClick(View v) {
//			setCheckedId(v.getId());
check(v.getId());
}

};

//	/**
//	 * Item的详细数据值 Title: <strong>RechargeValueGroup</strong>.java Description:
//	 *
//	 * @author Liusong
//	 * @date 2015-6-26
//	 * @version V1.0
//	 */
//	class RechargeValueBean {
//		public int zengs;
//		public int money;
//		public int cords;
//	}
}

就上上面的代码，因为我是使用的在Xml里面加入子控件，所以就没写addView方法，有兴趣的能够自己写一下addview方法。

然后，我有加了一个public void setDataOfTabs(List<RechargeNumInfo> datas)这种方法，就是把得到的数据直接付给这个控件。这样，就会自己主动把全部子控件附上值。

这样比較方便。由于数据是从server拿到的，使用Gson工具类，直接把数据封装成了集合。仅仅要把集合传入就可实现自己主动赋值。很方便，自己不须要一个一个的去赋值了。

依据RadioCroup改动的，仅仅要依据不同的情况稍作改动就能够满足非常多情况，比如。我们常见的底部导航。tab选择等等，仅仅要我们稍把不同的item子控件改动一下，我们就会非常快的实现一个单选样式的button组。

用法也非常easy。在代码中

mRechargeGroup= (RechargeValueGroup) findViewById(R.id.rechargeGroup);
mRechargeGroup.setOnItemTabClickListener(new OnItemTabClickListener() {

@Override
public void onItemClick(RechargeValueGroupview, int checkedId,String money) {
// TODO Auto-generated method stub
Log.i("TAG2", "checkedId===>>>"+checkedId);
realPrice = money;
}

});

找到控件设置监听，然后回掉回来各种參数，id等，我们也能够依据自己的需求去改动OnItemTabClickListener监听接口中的onItemClick传递的參数来满足自己的需求，

然后我们在适当的地方调用setDataOfTabs(List<RechargeNumInfo> datas)这种方法来设置数据就好了。

xml里面，就是上面的那段代码

<com.song.components.RechargeValueGroup
android:id="@+id/rechargeGroup"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >

<com.song.components.RechargeValueLayout
android:id="@+id/tab1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
</com.song.components.RechargeValueLayout>

<com.song.components.RechargeValueLayout
android:id="@+id/tab2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
</com.song.components.RechargeValueLayout>

<com.song.components.RechargeValueLayout
android:id="@+id/tab3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
</com.song.components.RechargeValueLayout>
<!--
<com.song.components.RechargeValueLayout
android:id="@+id/tab4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
</com.song.components.RechargeValueLayout>
-->
</com.song.components.RechargeValueGroup>

就这么简单，大家能够在这个基础上来进行其它扩展什么的。