android 高仿【优酷】圆盘旋转菜单 的实现

早上无意看到了 优酷 这个应用，被这个应用的圆形转动盘菜单所吸引
于是闲来无事解压了 该客户端的APK，轻轻的取出需要的几张图片，对此我身怀愧疚，娃哈哈
搞了一下，主要是布局那块比较蛋疼点。
效果图：




MyAnimation.java

package com.ljp.youku;

import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;

public class MyAnimation {
	// 图标的动画(入动画)
	public static void startAnimationsIn(ViewGroup viewgroup, int durationMillis) {

		viewgroup.setVisibility(0);
		for (int i = 0; i < viewgroup.getChildCount(); i++) {
			viewgroup.getChildAt(i).setVisibility(0);
			viewgroup.getChildAt(i).setClickable(true);
			viewgroup.getChildAt(i).setFocusable(true);
		}
		Animation animation;
		animation = new RotateAnimation(-180, 0, Animation.RELATIVE_TO_SELF,
				0.5f, Animation.RELATIVE_TO_SELF, 1.0f);
		animation.setFillAfter(true);
		animation.setDuration(durationMillis);
		viewgroup.startAnimation(animation);

	}

	// 图标的动画(出动画)
	public static void startAnimationsOut(final ViewGroup viewgroup,
			int durationMillis, int startOffset) {

		Animation animation;
		animation = new RotateAnimation(0, -180, Animation.RELATIVE_TO_SELF,
				0.5f, Animation.RELATIVE_TO_SELF, 1.0f);
		animation.setFillAfter(true);
		animation.setDuration(durationMillis);
		animation.setStartOffset(startOffset);
		animation.setAnimationListener(new Animation.AnimationListener() {
			@Override
			public void onAnimationStart(Animation arg0) {}
			@Override
			public void onAnimationRepeat(Animation arg0) {}
			@Override
			public void onAnimationEnd(Animation arg0) {
				viewgroup.setVisibility(8);
				for (int i = 0; i < viewgroup.getChildCount(); i++) {
					viewgroup.getChildAt(i).setVisibility(8);
					viewgroup.getChildAt(i).setClickable(false);
					viewgroup.getChildAt(i).setFocusable(false);
				}
			}
		});
		viewgroup.startAnimation(animation);
	}

}

TestYoukuActivity.java

package com.ljp.youku;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.RelativeLayout;

public class TestYoukuActivity extends Activity {
	/** Called when the activity is first created. */
	private boolean areLevel2Showing = true, areLevel3Showing = true;
	private RelativeLayout relate_level2, relate_level3;

	private ImageButton home, menu;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		findViews();
		setListener();
		
	}

	private void findViews() {
		relate_level2 = (RelativeLayout) findViewById(R.id.relate_level2);
		relate_level3 = (RelativeLayout) findViewById(R.id.relate_level3);
		home = (ImageButton) findViewById(R.id.home);
		menu = (ImageButton) findViewById(R.id.menu);
	}

	private void setListener() {
		// 给大按钮设置点击事件
		home.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				if (!areLevel2Showing) {
					MyAnimation.startAnimationsIn(relate_level2, 500);
				} else {
					if (areLevel3Showing) {
						MyAnimation.startAnimationsOut(relate_level2, 500, 500);
						MyAnimation.startAnimationsOut(relate_level3, 500, 0);
						areLevel3Showing = !areLevel3Showing;
					} else {
						MyAnimation.startAnimationsOut(relate_level2, 500, 0);
					}
				}
				areLevel2Showing = !areLevel2Showing;
			}
		});
		menu.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				if (!areLevel3Showing) {
					MyAnimation.startAnimationsIn(relate_level3, 500);
				} else {
					MyAnimation.startAnimationsOut(relate_level3, 500, 0);
				}
				areLevel3Showing = !areLevel3Showing;
			}
		});
	}

}