<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/widget33"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:id="@+id/img_menu"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:src="@drawable/set_icon_3"/>
<ImageView
android:id="@+id/img_menu1"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:src="@drawable/set_icon_4"
android:visibility="gone"/>
<ImageView
android:id="@+id/img_menu2"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:src="@drawable/set_icon_1"
android:visibility="gone"/>
<ImageView
android:id="@+id/img_menu3"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:src="@drawable/set_icon_4"
android:visibility="gone"/>
<ImageView
android:id="@+id/img_menu4"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:src="@drawable/set_icon_1"
android:visibility="gone"/>
<ImageView
android:id="@+id/img_menu5"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:src="@drawable/set_icon_4"
android:visibility="gone"/>
</RelativeLayout>
这个是自定义类
public class ArcMenu {
private Activity context;
private int[] imageRes;
private List<ImageView> imageViewList = new ArrayList<>();
private boolean isShowMenu = false;
int radius = 180;
double angle;
public ArcMenu(Activity context, int[] imageRes) {
angle = Math.PI / 2 / (imageRes.length - 2);
radius = Tool.dip2px(context, radius);
this.context = context;
this.imageRes = imageRes;
for (int imagRe : imageRes) {
ImageView imageView = (ImageView) context.findViewById(imagRe);
imageViewList.add(imageView);
}
}
private void openMenu() {
isShowMenu = true;
setItemVisible(true);
ObjectAnimator animator1;
ObjectAnimator animator2;
List<ObjectAnimator> objectAnimators = new ArrayList<>();
AnimatorSet set = new AnimatorSet();
for (int i = 1; i < imageRes.length; i++) {
animator1 = ObjectAnimator.ofFloat(imageViewList.get(i), "translationX", (float) (-radius * Math.sin(angle * (i - 1))));
animator2 = ObjectAnimator.ofFloat(imageViewList.get(i), "translationY", (float) (-radius * Math.cos(angle * (i - 1))));
objectAnimators.add(animator1);
objectAnimators.add(animator2);
}
for (int i = 0; i < objectAnimators.size(); i++) {
set.playTogether(objectAnimators.get(i));
}
set.setDuration(200);
set.start();
//第0个图标，菜单图标，加入动画
ObjectAnimator.ofFloat(imageViewList.get(0), "rotation", 0, 135f).setDuration(200).start();
}
private void closeMenu() {
isShowMenu = false;
ObjectAnimator animator1 = null;
ObjectAnimator animator2;
List<ObjectAnimator> objectAnimators = new ArrayList<>();
AnimatorSet set = new AnimatorSet();
for (int i = 1; i < imageRes.length; i++) {
animator1 = ObjectAnimator.ofFloat(imageViewList.get(i), "translationX", 0);
animator2 = ObjectAnimator.ofFloat(imageViewList.get(i), "translationY", 0);
objectAnimators.add(animator1);
objectAnimators.add(animator2);
}
animator1.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
setItemVisible(false);
super.onAnimationEnd(animation);
}
});
for (int i = 0; i < objectAnimators.size(); i++) {
set.playTogether(objectAnimators.get(i));
}
set.setDuration(200);
set.start();
ObjectAnimator.ofFloat(imageViewList.get(0), "rotation", 135f, 0).setDuration(200).start();
}
public void switchMenu() {
if (isShowMenu) {
closeMenu();
} else {
openMenu();
}
}
public void clickItem() {
setItemVisible(false);
closeMenu();
}
private void setItemVisible(boolean isVisible) {
for (int i = 1; i < imageRes.length; i++) {
if (isVisible) {
imageViewList.get(i).setVisibility(View.VISIBLE);
} else {
imageViewList.get(i).setVisibility(View.GONE);
}
}
}
}
MainActivity类是这样的.
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private ArcMenu mArcMenu;
private int[] imageRes = {R.id.img_menu, R.id.img_menu1,
R.id.img_menu2, R.id.img_menu3, R.id.img_menu4, R.id.img_menu5};
private ImageView mImgMenu;
private ImageView mImgMenu1;
private ImageView mImgMenu2;
private ImageView mImgMenu3;
private ImageView mImgMenu4;
private ImageView mImgMenu5;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mArcMenu = new ArcMenu(this, imageRes);
mImgMenu = (ImageView) findViewById(R.id.img_menu);
mImgMenu1 = (ImageView) findViewById(R.id.img_menu1);
mImgMenu2 = (ImageView) findViewById(R.id.img_menu2);
mImgMenu3 = (ImageView) findViewById(R.id.img_menu3);
mImgMenu4 = (ImageView) findViewById(R.id.img_menu4);
mImgMenu5 = (ImageView) findViewById(R.id.img_menu5);
mImgMenu.setOnClickListener(this);
mImgMenu1.setOnClickListener(this);
mImgMenu2.setOnClickListener(this);
mImgMenu3.setOnClickListener(this);
mImgMenu4.setOnClickListener(this);
mImgMenu5.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.img_menu:
mArcMenu.switchMenu();
break;
case R.id.img_menu1:
mArcMenu.clickItem();
break;
case R.id.img_menu2:
mArcMenu.clickItem();
break;
case R.id.img_menu3:
mArcMenu.clickItem();
break;
case R.id.img_menu4:
mArcMenu.clickItem();
break;
default:
break;
}
}
}
