效果图:
制作思路:
1、先分析这个效果,其实可以理解为把三级菜单分成
level1,level2,level3,level1是始终显示的。点击level1后,level2会出现;点击level2后,level3会出
现;level2,level3出现后,点击level1,level2和level3都会消失。然后消失和出现我们用到了一个动画效果。
2、动画效果用到的是RotateAnimation,由于我们都是用同一个效果,那么我们只要写一个类,把效果实现了就可以了。要是使用RotateAnimation的话,我们会不断的复用一些代码,这样开发的效率会比较低。
3、RotateAnimation的旋转进入和旋转出去是个坑——因为他是在X轴顺时针方向旋转的。大家可以看看图:
整体思路就是这样,接下来就是一些操作了:
代码:
1、MyAnimation类:
- public class MyAnimation{
- public static void animationIn(View view){
- animationIn(view,0);
- }
- public static void animationOut(View view){
- animationOut(view,0);
- }
- public static void animationIn(View view,long delay){
- RotateAnimation animation = new RotateAnimation(180, 360, view.getWidth()/2, view.getHeight());
- animation.setDuration(500);
- animation.setFillAfter(true);
- animation.setStartOffset(delay);
- view.startAnimation(animation);
- }
- public static void animationOut(View view,long delay){
- RotateAnimation animation = new RotateAnimation(0, 180, view.getWidth()/2, view.getHeight());
- animation.setDuration(500);
- animation.setFillAfter(true);
- animation.setStartOffset(delay);
- view.startAnimation(animation);
- }
- }
2、MainActivity类:
- public class MainActivity extends Activity implements OnClickListener{
- private boolean isLevel2showed,isLevel3showed;
- private RelativeLayout level1,level2,level3;
- private ImageButton home,menu;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- isLevel2showed = false;
- isLevel3showed = false;
- initLayout();
- initImageButton();
- }
- public void initLayout() {
- level1 = (RelativeLayout)findViewById(R.id.relate_level1);
- level2 = (RelativeLayout)findViewById(R.id.relate_level2);
- level3 = (RelativeLayout)findViewById(R.id.relate_level3);
- level2.setVisibility(View.INVISIBLE);
- level3.setVisibility(View.INVISIBLE);
- }
- public void initImageButton() {
- home = (ImageButton)level1.findViewById(R.id.home);
- menu = (ImageButton)level2.findViewById(R.id.menu);
- home.setOnClickListener(this);
- menu.setOnClickListener(this);
- }
- @Override
- public void onClick(View v) {
- switch(v.getId()){
- case R.id.home:
- if(!isLevel2showed){
- isLevel2showed = true;
- MyAnimation.animationIn(level2);
- }else if(!isLevel3showed){
- isLevel2showed = false;
- MyAnimation.animationOut(level2);
- }else{
- isLevel2showed = false;
- isLevel3showed = false;
- MyAnimation.animationOut(level3);
- MyAnimation.animationOut(level2,500);
- }
- break;
- case R.id.menu:
- if(!isLevel3showed){
- isLevel3showed = true;
- MyAnimation.animationIn(level3);
- }else{
- isLevel3showed = false;
- MyAnimation.animationOut(level3);
- }
- break;
- }
- }
- }
时间: 2024-11-13 06:30:56