核心代码：
MainActivity.java
package com.huatec.myapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageButton;
import android.widget.RelativeLayout;
public class MainActivity extends AppCompatActivity {
private ImageButton imageButton_a1, imageButton_b2;//触发菜单的按钮
private RelativeLayout l2, l3;//二级与三级菜单布局
private boolean isl2Show = true;//判断二级菜单是否显示
private boolean isl3Show = true; //盘算三级菜单是否显示
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//获取触发菜单的按钮
imageButton_a1 = findViewById(R.id.a_1);
imageButton_b2 = findViewById(R.id.b_2);
//获取二级菜单与三级菜单布局
l2 = findViewById(R.id.level_2);
l3 = findViewById(R.id.level_3);
//单击按钮：显示或隐藏三级菜单
imageButton_b2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isl3Show) {
//隐藏3级导航菜单
MyAnimation.animationOUT(l3, 500, 0);
} else {
//显示3级导航菜单
MyAnimation.animationIN(l3, 500);
}
//根据当前的显示状态设置为相反的状态，如3级菜单已经关闭。这里将设置状态为false
isl3Show = !isl3Show;
}
});
//单击按钮：显示二级菜单或隐藏二级三级菜单
imageButton_a1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!isl2Show) {
//显示2级导航菜单
MyAnimation.animationIN(l2, 500);
} else {
if (isl3Show) {
//隐藏3级导航菜单
MyAnimation.animationOUT(l3, 500, 0);
//隐藏2级导航菜单
MyAnimation.animationOUT(l2, 500, 500);
isl3Show = !isl3Show;
} else {
//隐藏2级导航菜单
MyAnimation.animationOUT(l2, 500, 0);
}
}
isl2Show = !isl2Show;
}
});
}
}
MyAnimation.java
package com.huatec.myapplication;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
public class MyAnimation {
/**
* 菜单进入动画
*
* @param viewGroup 菜单布局，对该布局进行旋转
* @param duration 动画时间
*/
public static void animationIN(ViewGroup viewGroup, int duration) {
//便利布局中按钮控件
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
}
/**
* 旋转动画
* RotateAnimation(fromDegrees, toDegrees, pivotXType, pivotXValue, pivotYType, pivotYValue)
* fromDegrees 开始旋转角度
* toDegrees 旋转到的角度
* pivotXType X轴 参照物
* pivotXValue x轴 旋转的参考点
* pivotYType Y轴 参照物
* pivotYValue Y轴 旋转的参考点
*/
Animation animation = new RotateAnimation(-180, 0,
Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF, 1.0f); //创建旋转动画
animation.setFillAfter(true); //停留在动画结束位置
animation.setDuration(duration); //动画过程的时间
viewGroup.startAnimation(animation); //启动动画
}
/**
* 菜单退出动画
*
* @param viewGroup
* @param duration
* @param startOffSet
*/
public static void animationOUT(final ViewGroup viewGroup, int duration, int startOffSet) {
//创建旋转动画
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);//动画过程的时间
animation.setStartOffset(startOffSet);//设置动画多久后执行
//设置动画监听事件
animation.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationRepeat(Animation animation) {
}
/**
* 动画结束后的事件处理
*/
@Override
public void onAnimationEnd(Animation animation) {
for (int i = 0; i < viewGroup.getChildCount(); i++) {
viewGroup.getChildAt(i).setVisibility(View.GONE); //设置隐藏菜单中按钮
viewGroup.getChildAt(i).setFocusable(false); //失去焦点
viewGroup.getChildAt(i).setClickable(false); //不可单击
}
}
});
viewGroup.startAnimation(animation);//启动退出动画
}
}
activity_main布局文件：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg"
tools:context=".MainActivity">
<!--创建一级菜单按钮-->
<RelativeLayout
android:id="@+id/level_1"
android:layout_width="100dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:background="@drawable/level1_bg">
<ImageButton
android:id="@+id/a_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="@drawable/a1_icon"/>
</RelativeLayout>
<!--显示二级菜单按钮-->
<RelativeLayout
android:id="@+id/level_2"
android:layout_width="180dp"
android:layout_height="90dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:background="@drawable/level2_bg">
<ImageButton
android:id="@+id/b_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_margin="10dp"
android:background="@drawable/b1_icon"/>
<ImageButton
android:id="@+id/b_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_margin="6dp"
android:background="@drawable/b2_icon"/>
<ImageButton
android:id="@+id/b_3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_margin="10dp"
android:background="@drawable/b3_icon"/>
</RelativeLayout>
<!--显示三级菜单按钮-->
<RelativeLayout
android:id="@+id/level_3"
android:layout_width="280dp"
android:layout_height="140dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:background="@drawable/level3_bg">
<ImageButton
android:id="@+id/c1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="6dp"
android:layout_marginLeft="12dp"
android:background="@drawable/c1_icon"/>
<ImageButton
android:id="@+id/c2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@id/c1"
android:layout_marginBottom="12dp"
android:layout_marginLeft="28dp"
android:background="@drawable/c2_icon"/>
<ImageButton
android:id="@+id/c3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@id/c2"
android:layout_marginBottom="6dp"
android:layout_marginLeft="8dp"
android:layout_toRightOf="@id/c2"
android:background="@drawable/c3_icon"/>
<ImageButton
android:id="@+id/c4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_margin="6dp"
android:background="@drawable/c4_icon"/>
<ImageButton
android:id="@+id/c7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="6dp"
android:layout_marginRight="12dp"
android:background="@drawable/c7_icon"/>
<ImageButton
android:id="@+id/c6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/c7"
android:layout_alignParentRight="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="12dp"
android:layout_marginRight="28dp"
android:background="@drawable/c6_icon"/>
<ImageButton
android:id="@+id/c5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/c6"
android:layout_centerHorizontal="true"
android:layout_marginBottom="6dp"
android:layout_marginRight="8dp"
android:layout_toLeftOf="@+id/c6"
android:background="@drawable/c5_icon"/>
</RelativeLayout>
</RelativeLayout>
效果图：
2018-05-18 22_41_31.gif
