android 利用属性动画实现酷炫的圆形菜单

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废话不哆嗦,直接上代码,反正也差不多没人看,就自己记录下咯

package com.example.testroundmenu;import android.animation.ObjectAnimator;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.RotateAnimation;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.Toast;public class Main extends Activity {//下标分别是从下到上,从左到右private RelativeLayout rl_1, rl_2, rl_3;private ImageView iv_rl1_home, iv_rl2_1, iv_rl2_2, iv_rl2_3, iv_rl3_1,iv_rl3_2, iv_rl3_3, iv_rl3_4, iv_rl3_5, iv_rl3_6, iv_rl3_7;private boolean isMidleMenuShow = true;private boolean isOutMenuShow = true;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.main);initView();}private void initView() {MyListener listener = new MyListener();// 初始化控件,简单起见,并没有直接在xml中声明点击函数rl_1 = (RelativeLayout) findViewById(R.id.rl_1);rl_2 = (RelativeLayout) findViewById(R.id.rl_2);rl_3 = (RelativeLayout) findViewById(R.id.rl_3);iv_rl1_home = (ImageView) findViewById(R.id.iv_home);iv_rl2_1 = (ImageView) findViewById(R.id.iv_search);iv_rl2_2 = (ImageView) findViewById(R.id.iv_menu);iv_rl2_3 = (ImageView) findViewById(R.id.iv_myyouku);iv_rl3_1 = (ImageView) findViewById(R.id.iv_out_1);iv_rl3_2 = (ImageView) findViewById(R.id.iv_out_2);iv_rl3_3 = (ImageView) findViewById(R.id.iv_out_3);iv_rl3_4 = (ImageView) findViewById(R.id.iv_out_4);iv_rl3_5 = (ImageView) findViewById(R.id.iv_out_5);iv_rl3_6 = (ImageView) findViewById(R.id.iv_out_6);iv_rl3_7 = (ImageView) findViewById(R.id.iv_out_7);// 添加点击监听iv_rl1_home.setOnClickListener(listener);iv_rl2_1.setOnClickListener(listener);iv_rl2_2.setOnClickListener(listener);iv_rl2_3.setOnClickListener(listener);iv_rl3_1.setOnClickListener(listener);iv_rl3_2.setOnClickListener(listener);iv_rl3_3.setOnClickListener(listener);iv_rl3_4.setOnClickListener(listener);iv_rl3_5.setOnClickListener(listener);iv_rl3_6.setOnClickListener(listener);iv_rl3_7.setOnClickListener(listener);}/*** @author kk_imgod imageview 的监听函数*/public class MyListener implements OnClickListener {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubswitch (v.getId()) {case R.id.iv_home:if (isMidleMenuShow) {isMidleMenuShow = false;animatrHiden(rl_2, 500);//如果最外层的菜单还在显示的话,那就一起隐藏if(isOutMenuShow) {animatrHiden(rl_3, 1000);isOutMenuShow = false;} } else {isMidleMenuShow = true;animatrShow(rl_2, 500);}showToast("HOME");break;case R.id.iv_menu:showToast("我的菜单");if(isOutMenuShow) {animatrHiden(rl_3, 1000);isOutMenuShow = false;} else {animatrShow(rl_3, 1000);isOutMenuShow = true;}break;case R.id.iv_search:showToast("我的搜索");break;case R.id.iv_myyouku:showToast("我的优酷");break;case R.id.iv_out_1:showToast("第一个");break;case R.id.iv_out_2:showToast("第二个");break;case R.id.iv_out_3:showToast("第三个");break;case R.id.iv_out_4:showToast("第四个");break;case R.id.iv_out_5:showToast("第五个");break;case R.id.iv_out_6:showToast("第六个");break;case R.id.iv_out_7:showToast("第七个");break;default:break;}}}/*** @param text*            显示吐司的文本*/public void showToast(String text) {Toast.makeText(Main.this, text, Toast.LENGTH_SHORT).show();}/*** 让视图动画显示出来,180-360度*/public void animatrShow(View view, long durction) {ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(view,"rotation", 180f, 360f );//设置旋转点view.setPivotX(view.getWidth() / 2);view.setPivotY(view.getHeight());objectAnimator.setDuration(durction).start();}/*** 让视图动画隐藏起来 0-180度*/public void animatrHiden(View view, long durction) {ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(view,"rotation", 0f, 180f);//设置动画的旋转点view.setPivotX(view.getWidth() / 2);view.setPivotY(view.getHeight());objectAnimator.setDuration(durction).start();}//下面的这种隐藏和显示动画的效果是传统动画,没有交互效果/*** @param view 0-180让视图隐藏*/public static void startAnimout(RelativeLayout view) {// TODO Auto-generated method stubRotateAnimation rotateAnimation = new RotateAnimation(0, 180,view.getWidth() / 2, view.getHeight());rotateAnimation.setDuration(500);rotateAnimation.setFillAfter(true);view.startAnimation(rotateAnimation);}/*** @param view 180-360让视图出现*/public static void startAnimin(RelativeLayout view) {// TODO Auto-generated method stubRotateAnimation rotateAnimation = new RotateAnimation(180, 360,view.getWidth() / 2, view.getHeight());rotateAnimation.setDuration(500);rotateAnimation.setFillAfter(true);view.startAnimation(rotateAnimation);}
}

关键性代码:设置旋转点

//设置旋转点view.setPivotX(view.getWidth() / 2);view.setPivotY(view.getHeight());

资源以及demo的地址: DEMO

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