Android 自定义View修炼-Android 实现自定义的卫星式菜单（弧形菜单）View

一、总述

Android 实现卫星式菜单也叫弧形菜单的主要要做的工作如下：
1.动画的处理
2.自定义ViewGroup来实现卫星式菜单View
（1）自定义属性
       a. 在attrs.xml中定义属性
       b. 在布局中使用自定义属性
       c. 在自定义View中读取布局文件中的自定义属性
（2）onMeasure 测量 child 即测量主按钮以及菜单项
（3）onLayout 布局 child 即布局主按钮以及菜单项
（4）设置主按钮的选择动画
       a.为菜单项menuItem添加平移动画和旋转动画
       b.实现菜单项menuItem的点击动画

卫星式菜单效果截图：

     

二、实现

上面介绍了原理和效果图，下面来看看卫星菜单类的实现：

1.布局文件的实现

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    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" >

    <com.xc.xcskin.view.XCArcMenuView
        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" >

        <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:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_camera"
                android:tag="camera" />
        <ImageView
                android:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_music"
                android:tag="music" />
        <ImageView
                android:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_place"
                android:tag="place" />
        <ImageView
                android:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_sleep"
                android:tag="sleep" />
        <ImageView
                android:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_thought"
                android:tag="thought" />
        <ImageView
                android:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_with"
                android:tag="with" />
    </com.xc.xcskin.view.XCArcMenuView>

    <com.xc.xcskin.view.XCArcMenuView
        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" >

        <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:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_camera"
                android:tag="camera" />
        <ImageView
                android:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_music"
                android:tag="music" />
        <ImageView
                android:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_place"
                android:tag="place" />
        <ImageView
                android:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_sleep"
                android:tag="sleep" />
        <ImageView
                android:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_thought"
                android:tag="thought" />
        <ImageView
                android:id="@+id/id_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/composer_with"
                android:tag="with" />
    </com.xc.xcskin.view.XCArcMenuView>

</RelativeLayout>

2.卫星菜单类的实现

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;
/**
 * 卫星式菜单View
 * @author caizhiming
 *
 */
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;
    //主菜的单按钮
    private View mCButton;
    private OnMenuItemClickListener mOnMenuItemClickListener;
    /**
     * 菜单的状态枚举类
     * @author caizhiming
     *
     */
    public enum Status{
        OPEN,CLOSE
    }
    /**
     * 菜单的位置枚举类
     * @author caizhiming
     *
     */
    public enum Position{
        LEFT_TOP,LEFT_BOTTOM,
        RIGHT_TOP,RIGHT_BOTTOM
    }
    /**
     * 点击子菜单项的回调接口
     * @author caizhiming
     *
     */
    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
        //获取自定义属性
        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();
        }
    }

    /**
     * 布局主菜单项
     */
    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);
    }
    /**
     * 布局菜单项
     */
    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();

            // 如果菜单位置在底部 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);
    }
    /**
     * 切换菜单
     */
    public void toggleMenu(int duration) {
        // TODO Auto-generated method stub
     // 为menuItem添加平移动画和旋转动画
        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);
                    }
                }
            });
            // 旋转动画
            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();

                }
            });
        }
        // 切换菜单状态
        changeStatus();

    }

    /**
     * 选择主菜单按钮
     *
     */
    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);
    }
    /**
     * 添加menuItem的点击动画
     *
     */
    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);

        }

    }

    /**
     * 为当前点击的Item设置变小和透明度增大的动画
     * @param duration
     * @return
     */
    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;

    }

    /**
     * 为当前点击的Item设置变大和透明度降低的动画
     */
    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;

    }

    /**
     * 切换菜单状态
     */
    private void changeStatus()
    {
        mStatus = (mStatus == Status.CLOSE ? Status.OPEN
                : Status.CLOSE);
    }
    /**
     * 是否处于展开状态
     * @return
     */
    public boolean isOpen()
    {
        return mStatus == Status.OPEN;
    }

}

3.使用卫星式菜单类

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;

/**
 * 使用并测试自定义卫星式菜单View
 * @author caizhiming
 *
 */
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、源码下载

源码下载：http://download.csdn.net/detail/jczmdeveloper/8561749

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