本文章向大家介绍如何在Android中实现一个圆盘旋转菜单效果的基本知识点总结和需要注意事项，具有一定的参考价值，需要的朋友可以参考一下。
Android是什么
Android是一种基于Linux内核的自由及开放源代码的操作系统，主要使用于移动设备，如智能手机和平板电脑，由美国Google公司和开放手机联盟领导及开发。
菜单布局文件:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" > <RelativeLayout android:layout_width="100dip" android:layout_height="50dip" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:background="@drawable/level1" > <ImageButton android:id="@+id/home" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:background="@drawable/icon_home" /> </RelativeLayout> <RelativeLayout android:layout_width="180dip" android:layout_height="90dip" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:id="@+id/level2" android:background="@drawable/level2" > <ImageButton android:id="@+id/search" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_margin="10dip" android:background="@drawable/icon_search" /> <ImageButton android:id="@+id/menu" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_margin="6dip" android:background="@drawable/icon_menu" /> <ImageButton android:id="@+id/myyouku" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:layout_margin="10dip" android:background="@drawable/icon_myyouku" /> </RelativeLayout> <RelativeLayout android:layout_width="280dip" android:layout_height="140dip" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" android:id="@+id/level3" android:background="@drawable/level3" > <ImageButton android:id="@+id/c1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_marginBottom="6dip" android:layout_marginLeft="12dip" android:background="@drawable/channel1" /> <ImageButton android:id="@+id/c2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_above="@id/c1" android:layout_marginBottom="12dip" android:layout_marginLeft="28dip" android:background="@drawable/channel2" /> <ImageButton android:id="@+id/c3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_above="@id/c2" android:layout_marginBottom="6dip" android:layout_marginLeft="8dip" android:layout_toRightOf="@id/c2" android:background="@drawable/channel3" /> <ImageButton android:id="@+id/c4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_margin="6dip" android:background="@drawable/channel4" /> <ImageButton android:id="@+id/c5" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_above="@+id/c6" android:layout_marginBottom="6dip" android:layout_marginRight="8dip" android:layout_toLeftOf="@+id/c6" android:background="@drawable/channel5" /> <ImageButton android:id="@+id/c6" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_above="@+id/c7" android:layout_marginBottom="12dip" android:layout_marginRight="28dip" android:layout_alignParentRight="true" android:background="@drawable/channel6" /> <ImageButton android:id="@+id/c7" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_marginBottom="6dip" android:layout_marginRight="12dip" android:layout_alignParentRight="true" android:background="@drawable/channel7" /> </RelativeLayout></RelativeLayout>MainActivity;
import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.ImageButton;import android.widget.RelativeLayout;public class MainActivity extends Activity { private ImageButton home; private ImageButton menu; private RelativeLayout level2; private RelativeLayout level3; private boolean isLevel2Show = true; private boolean isLevel3Show = true; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); home = (ImageButton) findViewById(R.id.home); menu = (ImageButton) findViewById(R.id.menu); level2 = (RelativeLayout) findViewById(R.id.level2); level3 = (RelativeLayout) findViewById(R.id.level3); menu.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(isLevel3Show){ //隐藏3级导航菜单 MyAnimation.startAnimationOUT(level3, 500, 0); }else { //显示3级导航菜单 MyAnimation.startAnimationIN(level3, 500); } isLevel3Show = !isLevel3Show; } }); home.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(!isLevel2Show){ //显示2级导航菜单 MyAnimation.startAnimationIN(level2, 500); } else { if(isLevel3Show){ //隐藏3级导航菜单 MyAnimation.startAnimationOUT(level3, 500, 0); //隐藏2级导航菜单 MyAnimation.startAnimationOUT(level2, 500, 500); isLevel3Show = !isLevel3Show; } else { //隐藏2级导航菜单 MyAnimation.startAnimationOUT(level2, 500, 0); } } isLevel2Show = !isLevel2Show; } }); }}自定义动画类MyAnimation:
import android.view.View;import android.view.ViewGroup;import android.view.animation.Animation;import android.view.animation.Animation.AnimationListener;import android.view.animation.RotateAnimation;public class MyAnimation { //入动画 public static void startAnimationIN(ViewGroup viewGroup, int duration){ for(int i = 0; i < viewGroup.getChildCount(); i++ ){ viewGroup.getChildAt(i).setVisibility(View.VISIBLE);//设置显示 viewGroup.getChildAt(i).setFocusable(true);//获得焦点 viewGroup.getChildAt(i).setClickable(true);//可以点击 } Animation animation; animation = new RotateAnimation(-180, 0, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 1.0f); animation.setFillAfter(true);//停留在动画结束位置 animation.setDuration(duration); viewGroup.startAnimation(animation); } //出动画 public static void startAnimationOUT(final ViewGroup viewGroup, int duration , int startOffSet){ Animation animation; animation = new RotateAnimation(0, -180, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 1.0f); animation.setFillAfter(true);//停留在动画结束位置 animation.setDuration(duration); animation.setStartOffset(startOffSet); animation.setAnimationListener(new AnimationListener() { @Override public void onAnimationStart(Animation animation) { // TODO Auto-generated method stub } @Override public void onAnimationRepeat(Animation animation) { // TODO Auto-generated method stub } @Override public void onAnimationEnd(Animation animation) { for(int i = 0; i < viewGroup.getChildCount(); i++ ){ viewGroup.getChildAt(i).setVisibility(View.GONE);//设置显示 viewGroup.getChildAt(i).setFocusable(false);//获得焦点 viewGroup.getChildAt(i).setClickable(false);//可以点击 } } }); viewGroup.startAnimation(animation); }}以上就是小编为大家带来的如何在Android中实现一个圆盘旋转菜单效果的全部内容了，希望大家多多支持编程网！
