转载请标明出处：http://blog.csdn.net/lmj623565791/article/details/37567907
逛eoe发现这样的UI效果，感觉很不错，后来知道github上有这么个开源项目~~~~当然本篇不是教你如何使用这个开源项目，而是教你如何自己通过自定义ViewGroup写这样的效果，自定义ViewGroup也是我的痛楚，嘿嘿，希望以此可以抛砖引玉~~
效果图：
1、实现思路
通过效果图，会有几个问题：
a、动画效果如何实现
可以看出动画是从顶点外外发射的，可能有人说，那还不简单，默认元素都在定点位置，然后TraslateAnimation就好了；这样忽略了一点，就是TraslateAnimation虽然有动画效果，但是本质是不会改变按钮的位置，我们的按钮动画结束是要点击的；有人可能会说那使用属性动画，或者改变leftMagin,rightMagin；这样可能比较麻烦，其实我们可以默认让子菜单就已经在目标位置，然后GONE，当点击时还是用TraslateAnimation，把起始位置设为定点，终点位置就是我们隐藏的区域，动画结束VISIBLE.
b、如何确定位置呢？
这可能需要一点数学上的知识，我画了一张草图（冰天雪地，跪玻璃碴子求画下面这些图的工具）：
每次会根据子菜单数量，算出a这个角度，然后通过sin , cos 分别算出每个子菜单的left , top ;
当然这是在左上的情况，如果在右上，则top还是和左上一致的，left则为 (屏幕宽度-左上算出的left) ;其他两个方位同理~
整体我通过自定义一个ViewGroup，这个ViewGroup中第一个子元素为点击的按钮（你可以随便布局，随便用什么控件），接下来的子元素我认为是菜单项。根据效果图，决定展开半径和显示的位置，让用户自己去定制。下面看具体实现：
2、自定义View的属性：
[html]
view plain
copy
print
?
<?xml version=
“1.0” encoding=
“utf-8”?> <resources> <attr name=
“position”> <enum name=
“left_top” value=
“0” /> <enum name=
“right_top” value=
“1” /> <enum name=
“right_bottom” value=
“2” /> <enum name=
“left_bottom” value=
“3” /> </attr> <attr name=
“radius” format=
“dimension”></attr> <declare-styleable name=
“ArcMenu”> <attr name=
“position” /> <attr name=
“radius”/> </declare-styleable> </resources>
<?xml version="1.0" encoding="utf-8"?>
<resources>
<attr name="position">
<enum name="left_top" value="0" />
<enum name="right_top" value="1" />
<enum name="right_bottom" value="2" />
<enum name="left_bottom" value="3" />
</attr>
<attr name="radius" format="dimension"></attr>
<declare-styleable name="ArcMenu">
<attr name="position" />
<attr name="radius"/>
</declare-styleable>
</resources>
3、在自定义的ViewGroup中获取这些属性
Arcmenu.Java
[java]
view plain
copy
print
?
public class ArcMenu
extends ViewGroup
implements OnClickListener {
private static final String TAG =
“ArcMenu”;
private Position mPosition = Position.LEFT_TOP;
private int mRadius =
100;
private View mButton;
private Status mCurrentStatus = Status.CLOSE;
private OnMenuItemClickListener onMenuItemClickListener;
public enum Status { OPEN, CLOSE }
public enum Position { LEFT_TOP, RIGHT_TOP, RIGHT_BOTTOM, LEFT_BOTTOM; }
public interface OnMenuItemClickListener {
void onClick(View view,
int pos); }
public ArcMenu(Context context) {
this(context,
null); }
public ArcMenu(Context context, AttributeSet attrs) {
this(context, attrs,
0); }
public ArcMenu(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle); mRadius = (
int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, mRadius, getResources().getDisplayMetrics()); TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.ArcMenu, defStyle,
0);
int n = a.getIndexCount();
for (
int i =
0; i < n; i++) {
int attr = a.getIndex(i);
switch (attr) {
case R.styleable.ArcMenu_position:
int val = a.getInt(attr,
0);
switch (val) {
case 0: mPosition = Position.LEFT_TOP;
break;
case 1: mPosition = Position.RIGHT_TOP;
break;
case 2: mPosition = Position.RIGHT_BOTTOM;
break;
case 3: mPosition = Position.LEFT_BOTTOM;
break; }
break;
case R.styleable.ArcMenu_radius: mRadius = a.getDimensionPixelSize(attr, (
int) TypedValue .applyDimension(TypedValue.COMPLEX_UNIT_DIP, 100f, getResources().getDisplayMetrics()));
break; } } a.recycle(); }
/**
* @author zhy
*/
public class ArcMenu extends ViewGroup implements OnClickListener
{
private static final String TAG = "ArcMenu";
/**
* 菜单的显示位置
*/
private Position mPosition = Position.LEFT_TOP;
/**
* 菜单显示的半径，默认100dp
*/
private int mRadius = 100;
/**
* 用户点击的按钮
*/
private View mButton;
/**
* 当前ArcMenu的状态
*/
private Status mCurrentStatus = Status.CLOSE;
/**
* 回调接口
*/
private OnMenuItemClickListener onMenuItemClickListener;
/**
* 状态的枚举类
*
* @author zhy
*
*/
public enum Status
{
OPEN, CLOSE
}
/**
* 设置菜单现实的位置，四选1，默认右下
*
* @author zhy
*/
public enum Position
{
LEFT_TOP, RIGHT_TOP, RIGHT_BOTTOM, LEFT_BOTTOM;
}
public interface OnMenuItemClickListener
{
void onClick(View view, int pos);
}
public ArcMenu(Context context)
{
this(context, null);
}
public ArcMenu(Context context, AttributeSet attrs)
{
this(context, attrs, 0);
}
/**
* 初始化属性
*
* @param context
* @param attrs
* @param defStyle
*/
public ArcMenu(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);
// dp convert to px
mRadius = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
mRadius, getResources().getDisplayMetrics());
TypedArray a = context.getTheme().obtainStyledAttributes(attrs,
R.styleable.ArcMenu, defStyle, 0);
int n = a.getIndexCount();
for (int i = 0; i < n; i++)
{
int attr = a.getIndex(i);
switch (attr)
{
case R.styleable.ArcMenu_position:
int val = a.getInt(attr, 0);
switch (val)
{
case 0:
mPosition = Position.LEFT_TOP;
break;
case 1:
mPosition = Position.RIGHT_TOP;
break;
case 2:
mPosition = Position.RIGHT_BOTTOM;
break;
case 3:
mPosition = Position.LEFT_BOTTOM;
break;
}
break;
case R.styleable.ArcMenu_radius:
// dp convert to px
mRadius = a.getDimensionPixelSize(attr, (int) TypedValue
.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 100f,
getResources().getDisplayMetrics()));
break;
}
}
a.recycle();
}
4、计算子元素的大小：
[java]
view plain
copy
print
?
@Override protected void onMeasure(
int widthMeasureSpec,
int heightMeasureSpec) {
int count = getChildCount();
for (
int i =
0; i < count; i++) { getChildAt(i).measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); }
super.onMeasure(widthMeasureSpec, heightMeasureSpec); }
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
int count = getChildCount();
for (int i = 0; i < count; i++)
{
// mesure child
getChildAt(i).measure(MeasureSpec.UNSPECIFIED,
MeasureSpec.UNSPECIFIED);
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
5、确定子元素的位置：
[java]
view plain
copy
print
?
@Override protected void onLayout(
boolean changed,
int l,
int t,
int r,
int b) {
if (changed) { layoutButton();
int count = getChildCount();
for (
int i =
0; i < count -
1; i++) { View child = getChildAt(i +
1); child.setVisibility(View.GONE);
int cl = (
int) (mRadius * Math.sin(Math.PI /
2 / (count -
2) * i));
int ct = (
int) (mRadius * Math.cos(Math.PI /
2 / (count -
2) * i));
int cWidth = child.getMeasuredWidth();
int cHeight = child.getMeasuredHeight();
if (mPosition == Position.LEFT_BOTTOM || mPosition == Position.RIGHT_BOTTOM) { ct = getMeasuredHeight() - cHeight - ct; }
if (mPosition == Position.RIGHT_TOP || mPosition == Position.RIGHT_BOTTOM) { cl = getMeasuredWidth() - cWidth - cl; } Log.e(TAG, cl +
” , ” + ct); child.layout(cl, ct, cl + cWidth, ct + cHeight); } } }
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b)
{
if (changed)
{
layoutButton();
int count = getChildCount();
/**
* 设置所有孩子的位置 例如(第一个为按钮)： 左上时，从左到右 ] 第2个：mRadius(sin0 , cos0)
* 第3个：mRadius(sina ,cosa) 注：[a = Math.PI / 2 * (cCount - 1)]
* 第4个：mRadius(sin2a ,cos2a) 第5个：mRadius(sin3a , cos3a) ...
*/
for (int i = 0; i < count - 1; i++)
{
View child = getChildAt(i + 1);
child.setVisibility(View.GONE);
int cl = (int) (mRadius * Math.sin(Math.PI / 2 / (count - 2)
* i));
int ct = (int) (mRadius * Math.cos(Math.PI / 2 / (count - 2)
* i));
// childview width
int cWidth = child.getMeasuredWidth();
// childview height
int cHeight = child.getMeasuredHeight();
// 右上，右下
if (mPosition == Position.LEFT_BOTTOM
|| mPosition == Position.RIGHT_BOTTOM)
{
ct = getMeasuredHeight() - cHeight - ct;
}
// 右上，右下
if (mPosition == Position.RIGHT_TOP
|| mPosition == Position.RIGHT_BOTTOM)
{
cl = getMeasuredWidth() - cWidth - cl;
}
Log.e(TAG, cl + " , " + ct);
child.layout(cl, ct, cl + cWidth, ct + cHeight);
}
}
}
首先在layoutButton中对按钮位置就行设置，以及初始化点击事件；然后从第二个子元素开始为菜单项，分别设置其位置，计算的原理就是上面我画的草图，可以再去仔细看看，动手在纸上画一画。
[java]
view plain
copy
print
?
private void layoutButton() { View cButton = getChildAt(
0); cButton.setOnClickListener(
this);
int l =
0;
int t =
0;
int width = cButton.getMeasuredWidth();
int height = cButton.getMeasuredHeight();
switch (mPosition) {
case LEFT_TOP: l =
0; t =
0;
break;
case LEFT_BOTTOM: l =
0; t = getMeasuredHeight() - height;
break;
case RIGHT_TOP: l = getMeasuredWidth() - width; t =
0;
break;
case RIGHT_BOTTOM: l = getMeasuredWidth() - width; t = getMeasuredHeight() - height;
break; } Log.e(TAG, l +
” , ” + t +
“ , ” + (l + width) +
“ , ” + (t + height)); cButton.layout(l, t, l + width, t + height); }
/**
* 第一个子元素为按钮，为按钮布局且初始化点击事件
*/
private void layoutButton()
{
View cButton = getChildAt(0);
cButton.setOnClickListener(this);
int l = 0;
int t = 0;
int width = cButton.getMeasuredWidth();
int height = cButton.getMeasuredHeight();
switch (mPosition)
{
case LEFT_TOP:
l = 0;
t = 0;
break;
case LEFT_BOTTOM:
l = 0;
t = getMeasuredHeight() - height;
break;
case RIGHT_TOP:
l = getMeasuredWidth() - width;
t = 0;
break;
case RIGHT_BOTTOM:
l = getMeasuredWidth() - width;
t = getMeasuredHeight() - height;
break;
}
Log.e(TAG, l + " , " + t + " , " + (l + width) + " , " + (t + height));
cButton.layout(l, t, l + width, t + height);
}
这是定位Button的代码，此时的代码已经实现了定位，如果你把onLayout中childView.setVisibility(VISIBLE)。ArcMenu的整个控件的样子已经实现了，接下来就是点击事件，已经效果动画的实现了。
6、设置按钮点击事件
[java]
view plain
copy
print
?
@Override public void onClick(View v) { mButton = findViewById(R.id.id_button);
if (mButton ==
null) { mButton = getChildAt(
0); } rotateView(mButton, 0f, 270f,
300); toggleMenu(
300); }
/**
* 为按钮添加点击事件
*/
@Override
public void onClick(View v)
{
mButton = findViewById(R.id.id_button);
if (mButton == null)
{
mButton = getChildAt(0);
}
rotateView(mButton, 0f, 270f, 300);
toggleMenu(300);
}
[java]
view plain
copy
print
?
public static void rotateView(View view,
float fromDegrees,
float toDegrees,
int durationMillis) { RotateAnimation rotate =
new RotateAnimation(fromDegrees, toDegrees, Animation.RELATIVE_TO_SELF,
0.5f, Animation.RELATIVE_TO_SELF,
0.5f); rotate.setDuration(durationMillis); rotate.setFillAfter(
true); view.startAnimation(rotate); }
public void toggleMenu(
int durationMillis) {
int count = getChildCount();
for (
int i =
0; i < count -
1; i++) {
final View childView = getChildAt(i +
1); childView.setVisibility(View.VISIBLE);
int xflag =
1;
int yflag =
1;
if (mPosition == Position.LEFT_TOP || mPosition == Position.LEFT_BOTTOM) xflag = -
1;
if (mPosition == Position.LEFT_TOP || mPosition == Position.RIGHT_TOP) yflag = -
1;
int cl = (
int) (mRadius * Math.sin(Math.PI /
2 / (count -
2) * i));
int ct = (
int) (mRadius * Math.cos(Math.PI /
2 / (count -
2) * i)); AnimationSet animset =
new AnimationSet(
true); Animation animation =
null;
if (mCurrentStatus == Status.CLOSE) { animset.setInterpolator(
new OvershootInterpolator(2F)); animation =
new TranslateAnimation(xflag * cl,
0, yflag * ct,
0); childView.setClickable(
true); childView.setFocusable(
true); }
else { animation =
new TranslateAnimation(0f, xflag * cl, 0f, yflag * ct); childView.setClickable(
false); childView.setFocusable(
false); } animation.setAnimationListener(
new AnimationListener() {
public void onAnimationStart(Animation animation) { }
public void onAnimationRepeat(Animation animation) { }
public void onAnimationEnd(Animation animation) {
if (mCurrentStatus == Status.CLOSE) childView.setVisibility(View.GONE); } }); animation.setFillAfter(
true); animation.setDuration(durationMillis); animation.setStartOffset((i *
100) / (count -
1)); RotateAnimation rotate =
new RotateAnimation(
0,
720, Animation.RELATIVE_TO_SELF,
0.5f, Animation.RELATIVE_TO_SELF,
0.5f); rotate.setDuration(durationMillis); rotate.setFillAfter(
true); animset.addAnimation(rotate); animset.addAnimation(animation); childView.startAnimation(animset);
final int index = i +
1; childView.setOnClickListener(
new View.OnClickListener() {
@Override public void onClick(View v) {
if (onMenuItemClickListener !=
null) onMenuItemClickListener.onClick(childView, index -
1); menuItemAnin(index -
1); changeStatus(); } }); } changeStatus(); Log.e(TAG, mCurrentStatus.name() +
”“); }
/**
* 按钮的旋转动画
*
* @param view
* @param fromDegrees
* @param toDegrees
* @param durationMillis
*/
public static void rotateView(View view, float fromDegrees,
float toDegrees, int durationMillis)
{
RotateAnimation rotate = new RotateAnimation(fromDegrees, toDegrees,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
rotate.setDuration(durationMillis);
rotate.setFillAfter(true);
view.startAnimation(rotate);
}
public void toggleMenu(int durationMillis)
{
int count = getChildCount();
for (int i = 0; i < count - 1; i++)
{
final View childView = getChildAt(i + 1);
childView.setVisibility(View.VISIBLE);
int xflag = 1;
int yflag = 1;
if (mPosition == Position.LEFT_TOP
|| mPosition == Position.LEFT_BOTTOM)
xflag = -1;
if (mPosition == Position.LEFT_TOP
|| mPosition == Position.RIGHT_TOP)
yflag = -1;
// child left
int cl = (int) (mRadius * Math.sin(Math.PI / 2 / (count - 2) * i));
// child top
int ct = (int) (mRadius * Math.cos(Math.PI / 2 / (count - 2) * i));
AnimationSet animset = new AnimationSet(true);
Animation animation = null;
if (mCurrentStatus == Status.CLOSE)
{// to open
animset.setInterpolator(new OvershootInterpolator(2F));
animation = new TranslateAnimation(xflag * cl, 0, yflag * ct, 0);
childView.setClickable(true);
childView.setFocusable(true);
} else
{// to close
animation = new TranslateAnimation(0f, xflag * cl, 0f, yflag
* ct);
childView.setClickable(false);
childView.setFocusable(false);
}
animation.setAnimationListener(new AnimationListener()
{
public void onAnimationStart(Animation animation)
{
}
public void onAnimationRepeat(Animation animation)
{
}
public void onAnimationEnd(Animation animation)
{
if (mCurrentStatus == Status.CLOSE)
childView.setVisibility(View.GONE);
}
});
animation.setFillAfter(true);
animation.setDuration(durationMillis);
// 为动画设置一个开始延迟时间，纯属好看，可以不设
animation.setStartOffset((i * 100) / (count - 1));
RotateAnimation rotate = new RotateAnimation(0, 720,
Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF, 0.5f);
rotate.setDuration(durationMillis);
rotate.setFillAfter(true);
animset.addAnimation(rotate);
animset.addAnimation(animation);
childView.startAnimation(animset);
final int index = i + 1;
childView.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
if (onMenuItemClickListener != null)
onMenuItemClickListener.onClick(childView, index - 1);
menuItemAnin(index - 1);
changeStatus();
}
});
}
changeStatus();
Log.e(TAG, mCurrentStatus.name() +"");
}
点击时，触发TanslateAnimation动画，从定点向外扩展，也给点击按钮添加了一个旋转动画，每个子菜单项同样添加了旋转动画，且如果用户设置回调，调用回调接口；设置子菜单的点击事件。整体就是点击然后动画效果~~
7、设置子菜单的点击事件
[java]
view plain
copy
print
?
private void menuItemAnin(
int item) {
for (
int i =
0; i < getChildCount() -
1; i++) { View childView = getChildAt(i +
1);
if (i == item) { childView.startAnimation(scaleBigAnim(
300)); }
else { childView.startAnimation(scaleSmallAnim(
300)); } childView.setClickable(
false); childView.setFocusable(
false); } }
private Animation scaleSmallAnim(
int durationMillis) { Animation anim =
new ScaleAnimation(
1.0f, 0f,
1.0f, 0f, Animation.RELATIVE_TO_SELF,
0.5f, Animation.RELATIVE_TO_SELF,
0.5f); anim.setDuration(durationMillis); anim.setFillAfter(
true);
return anim; }
private Animation scaleBigAnim(
int durationMillis) { AnimationSet animationset =
new AnimationSet(
true); Animation anim =
new ScaleAnimation(
1.0f,
4.0f,
1.0f,
4.0f, Animation.RELATIVE_TO_SELF,
0.5f, Animation.RELATIVE_TO_SELF,
0.5f); Animation alphaAnimation =
new AlphaAnimation(
1,
0); animationset.addAnimation(anim); animationset.addAnimation(alphaAnimation); animationset.setDuration(durationMillis); animationset.setFillAfter(
true);
return animationset; }
/**
* 开始菜单动画，点击的MenuItem放大消失，其他的缩小消失
* @param item
*/
private void menuItemAnin(int item)
{
for (int i = 0; i < getChildCount() - 1; i++)
{
View childView = getChildAt(i + 1);
if (i == item)
{
childView.startAnimation(scaleBigAnim(300));
} else
{
childView.startAnimation(scaleSmallAnim(300));
}
childView.setClickable(false);
childView.setFocusable(false);
}
}
/**
* 缩小消失
* @param durationMillis
* @return
*/
private Animation scaleSmallAnim(int durationMillis)
{
Animation anim = new ScaleAnimation(1.0f, 0f, 1.0f, 0f,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
anim.setDuration(durationMillis);
anim.setFillAfter(true);
return anim;
}
/**
* 放大，透明度降低
* @param durationMillis
* @return
*/
private Animation scaleBigAnim(int durationMillis)
{
AnimationSet animationset = new AnimationSet(true);
Animation anim = new ScaleAnimation(1.0f, 4.0f, 1.0f, 4.0f,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
Animation alphaAnimation = new AlphaAnimation(1, 0);
animationset.addAnimation(anim);
animationset.addAnimation(alphaAnimation);
animationset.setDuration(durationMillis);
animationset.setFillAfter(true);
return animationset;
}
点击的菜单项变大且慢慢透明消失，未点击的菜单项缩小消失~有兴趣的可以改成自己喜欢的动画~
注：动画效果很多借鉴了eoe上那位仁兄的代码，这类动画也比较简单，就不多说了~
好了，剩下就是些getter，setter了~
8、布局文件：
[html]
view plain
copy
print
?
<RelativeLayout xmlns:android=
“http://schemas.android.com/apk/res/android” xmlns:tools=
“http://schemas.android.com/tools” xmlns:zhy=
“http://schemas.android.com/apk/res/com.example.zhy_arcmenu” android:layout_width=
“match_parent” android:layout_height=
“match_parent” > <com.example.zhy_arcmenu.ArcMenu android:id=
“@+id/id_arcmenu1” android:layout_width=
“fill_parent” android:layout_height=
“fill_parent” zhy:position=
“left_top” zhy:radius=
“130dp” > <RelativeLayout android:layout_width=
“wrap_content” android:layout_height=
“wrap_content” android:background=
“@drawable/composer_button” > <ImageView android:id=
“@+id/id_button” android:layout_width=
“wrap_content” android:layout_height=
“wrap_content” android:layout_centerInParent=
“true” android:src=
“@drawable/composer_icn_plus” /> </RelativeLayout> <ImageView android:layout_width=
“wrap_content” android:layout_height=
“wrap_content” android:layout_centerInParent=
“true” android:src=
“@drawable/composer_camera” android:tag=
“Camera” /> <ImageView android:layout_width=
“wrap_content” android:layout_height=
“wrap_content” android:layout_centerInParent=
“true” android:src=
“@drawable/composer_sun” android:tag=
“Sun” /> <ImageView android:layout_width=
“wrap_content” android:layout_height=
“wrap_content” android:layout_centerInParent=
“true” android:src=
“@drawable/composer_place” android:tag=
“Place” /> <ImageView android:layout_width=
“wrap_content” android:layout_height=
“wrap_content” android:layout_centerInParent=
“true” android:src=
“@drawable/composer_sleep” android:tag=
“Sleep” /> </com.example.zhy_arcmenu.ArcMenu>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:zhy="http://schemas.android.com/apk/res/com.example.zhy_arcmenu"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<com.example.zhy_arcmenu.ArcMenu
android:id="@+id/id_arcmenu1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
zhy:position="left_top"
zhy:radius="130dp" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/composer_button" >
<ImageView
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="@drawable/composer_icn_plus" />
</RelativeLayout>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="@drawable/composer_camera"
android:tag="Camera" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="@drawable/composer_sun"
android:tag="Sun" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="@drawable/composer_place"
android:tag="Place" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="@drawable/composer_sleep"
android:tag="Sleep" />
</com.example.zhy_arcmenu.ArcMenu>
嗯，第一个元素为按钮，其他的都是菜单项了~~喜欢用代码的，也可以代码生成，我是比较喜欢布局文件中写这些玩意~
9、MainActivity
[java]
view plain
copy
print
?
package com.example.zhy_arcmenu;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.ImageView;
import android.widget.Toast;
import com.example.zhy_arcmenu.ArcMenu.OnMenuItemClickListener;
public class MainActivity
extends Activity {
private ArcMenu mArcMenuLeftTop;
@Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mArcMenuLeftTop = (ArcMenu) findViewById(R.id.id_arcmenu1); ImageView people =
new ImageView(
this); people.setImageResource(R.drawable.composer_with); people.setTag(
”People”); mArcMenuLeftTop.addView(people); mArcMenuLeftTop .setOnMenuItemClickListener(
new OnMenuItemClickListener() {
@Override public void onClick(View view,
int pos) { Toast.makeText(MainActivity.
this, pos +
”:” + view.getTag(), Toast.LENGTH_SHORT) .show(); } }); } }
package com.example.zhy_arcmenu;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.ImageView;
import android.widget.Toast;
import com.example.zhy_arcmenu.ArcMenu.OnMenuItemClickListener;
public class MainActivity extends Activity
{
private ArcMenu mArcMenuLeftTop;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mArcMenuLeftTop = (ArcMenu) findViewById(R.id.id_arcmenu1);
//动态添加一个MenuItem
ImageView people = new ImageView(this);
people.setImageResource(R.drawable.composer_with);
people.setTag("People");
mArcMenuLeftTop.addView(people);
mArcMenuLeftTop
.setOnMenuItemClickListener(new OnMenuItemClickListener()
{
@Override
public void onClick(View view, int pos)
{
Toast.makeText(MainActivity.this,
pos + ":" + view.getTag(), Toast.LENGTH_SHORT)
.show();
}
});
}
}
结束~~有任何意见欢迎指出~~
源码点击下载
