一、前言
Android 實作衛星式菜單也叫弧形菜單，主要要做的工作如下：
1.動畫的處理
2.自定義ViewGroup來實作衛星式菜單View
(1)自定義屬性
a. 在attrs.xml中定義屬性
b. 在布局中使用自定義屬性
c. 在自定義View中讀取布局檔案中的自定義屬性
(2)onMeasure測量 child即測量主按鈕以及菜單項
(3)onLayout布局 child即布局主按鈕以及菜單項
(4)設定主按鈕的選擇動畫
a.為菜單項menuItem添加平移動畫和旋轉動畫
b.實作菜單項menuItem的點選動畫
衛星式菜單效果截圖：
二、實作
上面介紹了原理和效果圖，下面來看看衛星菜單類的實作：
1.布局檔案的實作
xmlns:tools="http://schemas.android.com/tools"
xmlns:xcskin="http://schemas.android.com/apk/res/com.xc.xcskin"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent" >
android:id="@+id/arcmenu"
android:layout_width="150dp"
android:layout_height="150dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
xcskin:position="left_bottom"
xcskin:radius="120dp" >
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/composer_button" >
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" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_camera"
android:tag="camera" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_music"
android:tag="music" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_place"
android:tag="place" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_sleep"
android:tag="sleep" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_thought"
android:tag="thought" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_with"
android:tag="with" />
android:id="@+id/arcmenu2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
xcskin:position="right_bottom"
xcskin:radius="150dp" >
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/composer_button" >
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" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_camera"
android:tag="camera" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_music"
android:tag="music" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_place"
android:tag="place" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_sleep"
android:tag="sleep" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_thought"
android:tag="thought" />
android:id="@+id/id_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/composer_with"
android:tag="with" />
2.衛星菜單類的實作
package com.xc.xcskin.view;
import com.xc.xcskin.R;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.util.Log;
import android.util.TypedValue;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
public class XCArcMenuView extends ViewGroup implements OnClickListener{
private static final int POS_LEFT_TOP = 0;
private static final int POS_LEFT_BOTTOM = 1;
private static final int POS_RIGHT_TOP = 2;
private static final int POS_RIGHT_BOTTOM = 3;
private Position mPosition = Position.RIGHT_BOTTOM;
private int mRadius;
private Status mStatus = Status.CLOSE;
//主菜的單按鈕
private View mCButton;
private OnMenuItemClickListener mOnMenuItemClickListener;
public enum Status{
OPEN,CLOSE
}
public enum Position{
LEFT_TOP,LEFT_BOTTOM,
RIGHT_TOP,RIGHT_BOTTOM
}
public interface OnMenuItemClickListener {
void onClick(View view, int pos);
}
public void setOnMenuItemClickListener(
OnMenuItemClickListener onMenuItemClickListener) {
this.mOnMenuItemClickListener = onMenuItemClickListener;
}
public XCArcMenuView(Context context) {
this(context, null);
// TODO Auto-generated constructor stub
}
public XCArcMenuView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
// TODO Auto-generated constructor stub
}
public XCArcMenuView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
//擷取自定義屬性
TypedArray a = context.getTheme().obtainStyledAttributes(attrs,
R.styleable.XCArcMenuView,defStyle,0);
int pos = a.getInt(R.styleable.XCArcMenuView_position , POS_RIGHT_BOTTOM);
switch (pos) {
case POS_LEFT_TOP:
mPosition = Position.LEFT_TOP;
break;
case POS_LEFT_BOTTOM:
mPosition = Position.LEFT_BOTTOM;
break;
case POS_RIGHT_TOP:
mPosition = Position.RIGHT_TOP;
break;
case POS_RIGHT_BOTTOM:
mPosition = Position.RIGHT_BOTTOM;
break;
}
mRadius = (int) a.getDimension(R.styleable.XCArcMenuView_radius,
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 150,
getResources().getDisplayMetrics()));
Log.v("czm", "mPosition = " + mPosition + ",mRadius = "+mRadius);
a.recycle();
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// TODO Auto-generated method stub
int count = getChildCount();
for(int i = 0; i < count; i ++){
measureChild(getChildAt(i), widthMeasureSpec, heightMeasureSpec);
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
// TODO Auto-generated method stub
if(changed){
layoutCButton();
layoutMenuItems();
}
}
private void layoutCButton() {
// TODO Auto-generated method stub
mCButton = getChildAt(0);
mCButton.setOnClickListener(this);
int l = 0;
int t = 0;
int width = mCButton.getMeasuredWidth();
int height = mCButton.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;
default:
break;
}
mCButton.layout(l, t, l + width, t + height);
}
private void layoutMenuItems() {
// TODO Auto-generated method stub
int count = getChildCount();
for (int i = 0; i < count - 1; i++) {
View child = getChildAt(i + 1);
int l = (int) (mRadius * Math.sin(Math.PI / 2 / (count - 2) * i));
int t = (int) (mRadius * Math.cos(Math.PI / 2 / (count - 2) * i));
int width = child.getMeasuredWidth();
int height = child.getMeasuredHeight();
// 如果菜機關置在底部 左下，右下
if (mPosition == Position.LEFT_BOTTOM || mPosition == Position.RIGHT_BOTTOM) {
t = getMeasuredHeight() - height - t;
}
// 右上，右下
if (mPosition == Position.RIGHT_TOP || mPosition == Position.RIGHT_BOTTOM) {
l = getMeasuredWidth() - width - l;
}
child.layout(l, t, l + width, t + height);
child.setVisibility(View.GONE);
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mCButton = findViewById(R.id.id_button);
rotateCButton(v,0,360,300);
toggleMenu(300);
}
public void toggleMenu(int duration) {
// TODO Auto-generated method stub
// 為menuItem添加平移動畫和旋轉動畫
int count = getChildCount();
for (int i = 0; i < count - 1; i++)
{
final View childView = getChildAt(i + 1);
childView.setVisibility(View.VISIBLE);
// end 0 , 0
// start
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 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;
}
AnimationSet animset = new AnimationSet(true);
Animation tranAnim = null;
// to open
if (mStatus == Status.CLOSE)
{
tranAnim = new TranslateAnimation(xflag * cl, 0, yflag * ct, 0);
childView.setClickable(true);
childView.setFocusable(true);
} else
// to close
{
tranAnim = new TranslateAnimation(0, xflag * cl, 0, yflag * ct);
childView.setClickable(false);
childView.setFocusable(false);
}
tranAnim.setFillAfter(true);
tranAnim.setDuration(duration);
tranAnim.setStartOffset((i * 100) / count);
tranAnim.setAnimationListener(new AnimationListener()
{
@Override
public void onAnimationStart(Animation animation)
{
}
@Override
public void onAnimationRepeat(Animation animation)
{
}
@Override
public void onAnimationEnd(Animation animation)
{
if (mStatus == Status.CLOSE)
{
childView.setVisibility(View.GONE);
}
}
});
// 旋轉動畫
RotateAnimation rotateAnim = new RotateAnimation(0, 720,
Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF, 0.5f);
rotateAnim.setDuration(duration);
rotateAnim.setFillAfter(true);
animset.addAnimation(rotateAnim);
animset.addAnimation(tranAnim);
childView.startAnimation(animset);
final int pos = i + 1;
childView.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
if (mOnMenuItemClickListener != null)
mOnMenuItemClickListener.onClick(childView, pos);
menuItemAnim(pos - 1);
changeStatus();
}
});
}
// 切換菜單狀态
changeStatus();
}
private void rotateCButton(View v, float start, float end, int duration) {
// TODO Auto-generated method stub
RotateAnimation anim = new RotateAnimation(start, end,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
anim.setDuration(duration);
anim.setFillAfter(true);
v.startAnimation(anim);
}
private void menuItemAnim(int pos)
{
for (int i = 0; i < getChildCount() - 1; i++)
{
View childView = getChildAt(i + 1);
if (i == pos)
{
childView.startAnimation(scaleBigAnim(300));
} else
{
childView.startAnimation(scaleSmallAnim(300));
}
childView.setClickable(false);
childView.setFocusable(false);
}
}
private Animation scaleSmallAnim(int duration)
{
AnimationSet animationSet = new AnimationSet(true);
ScaleAnimation scaleAnim = new ScaleAnimation(1.0f, 0.0f, 1.0f, 0.0f,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
AlphaAnimation alphaAnim = new AlphaAnimation(1f, 0.0f);
animationSet.addAnimation(scaleAnim);
animationSet.addAnimation(alphaAnim);
animationSet.setDuration(duration);
animationSet.setFillAfter(true);
return animationSet;
}
private Animation scaleBigAnim(int duration)
{
AnimationSet animationSet = new AnimationSet(true);
ScaleAnimation scaleAnim = new ScaleAnimation(1.0f, 4.0f, 1.0f, 4.0f,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
AlphaAnimation alphaAnim = new AlphaAnimation(1f, 0.0f);
animationSet.addAnimation(scaleAnim);
animationSet.addAnimation(alphaAnim);
animationSet.setDuration(duration);
animationSet.setFillAfter(true);
return animationSet;
}
private void changeStatus()
{
mStatus = (mStatus == Status.CLOSE ? Status.OPEN
: Status.CLOSE);
}
public boolean isOpen()
{
return mStatus == Status.OPEN;
}
}
3.使用衛星式菜單類
package com.xc.xcskin;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
import com.xc.xcskin.view.XCArcMenuView;
import com.xc.xcskin.view.XCArcMenuView.OnMenuItemClickListener;
import com.xc.xcskin.view.XCGuaguakaView;
import com.xc.xcskin.view.XCGuaguakaView.OnCompleteListener;
public class XCArcMenuViewDemo extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.xc_arcmenu_view_demo);
XCArcMenuView view = (XCArcMenuView) findViewById(R.id.arcmenu);
view.setOnMenuItemClickListener(new OnMenuItemClickListener() {
@Override
public void onClick(View view, int pos) {
// TODO Auto-generated method stub
String tag = (String) view.getTag();
Toast.makeText(XCArcMenuViewDemo.this, tag, Toast.LENGTH_SHORT).show();
}
});
}
}
三、總結
Android實作自定義的衛星式菜單(弧形菜單)的内容到這就基本結束了，感興趣的朋友們可以動手操作起來，隻有自己實踐了才能更深的了解，希望本文對大家能有所幫助。