属性动画实现扇形圆形展开图效果

来源：互联网发布：法律硕士有奖学金知乎编辑：程序博客网时间：2024/06/09 19:49

在布局文件中,我们把图片叠罗汉一样叠起来,把点击的那个图片放在布局最后,那样就可以实现展示的是哪张

public class MainActivity extends AppCompatActivity {    private final String TAG = "CircleMenu";    private FrameLayout content_main;    private ImageView iv8;    private ImageView iv7;    private ImageView iv6;    private ImageView iv5;    private ImageView iv4;    private ImageView iv3;    private ImageView iv2;    private ImageView iv1;    private ImageView iv18;    private ImageView iv17;    private ImageView iv16;    private ImageView iv15;    private ImageView iv14;    private ImageView iv13;    private ImageView iv12;    private ImageView iv11;

    //创建两个集合,把初始化后要实现圆形或者扇形的imageview分别存放到两个集合中

    //扇形    private List<ImageView> imageViews = new ArrayList<>();    //圆形

    private List<ImageView> imageViews2 = new ArrayList<>();    //扇形半径

    private final int radius1 = 500;

     //圆形半径    private final int radius2 = 300;    private void assignViews() {        //content_main = (FrameLayout) findViewById(R.id.content_main);

        //初始化id并且存放到集合        iv8 = (ImageView) findViewById(R.id.iv8);        imageViews.add(iv8);        iv7 = (ImageView) findViewById(R.id.iv7);        imageViews.add(iv7);        iv6 = (ImageView) findViewById(R.id.iv6);        imageViews.add(iv6);        iv5 = (ImageView) findViewById(R.id.iv5);        imageViews.add(iv5);        iv4 = (ImageView) findViewById(R.id.iv4);        imageViews.add(iv4);        iv3 = (ImageView) findViewById(R.id.iv3);        imageViews.add(iv3);        iv2 = (ImageView) findViewById(R.id.iv2);        imageViews.add(iv2);        iv1 = (ImageView) findViewById(R.id.iv1);        iv18 = (ImageView) findViewById(R.id.iv18);        imageViews2.add(iv18);        iv17 = (ImageView) findViewById(R.id.iv17);        imageViews2.add(iv17);        iv16 = (ImageView) findViewById(R.id.iv16);        imageViews2.add(iv16);        iv15 = (ImageView) findViewById(R.id.iv15);        imageViews2.add(iv15);        iv14 = (ImageView) findViewById(R.id.iv14);        imageViews2.add(iv14);        iv13 = (ImageView) findViewById(R.id.iv13);        imageViews2.add(iv13);        iv12 = (ImageView) findViewById(R.id.iv12);        imageViews2.add(iv12);        iv11 = (ImageView) findViewById(R.id.iv11);    }    @RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        assignViews();    }    @RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)    public void onClick(View v) {        if (v.getId() == iv1.getId()) {            Boolean isShowing = (Boolean) iv1.getTag();            if (null == isShowing || isShowing == false) {                ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(iv1, "rotation", 0, 45);                objectAnimator.setDuration(500);                objectAnimator.start();                iv1.setTag(true);                showSectorMenu();            } else {                iv1.setTag(false);                ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(iv1, "rotation", 45, 0);                objectAnimator.setDuration(500);                objectAnimator.start();                closeSectorMenu();            }        } else if (v.getId() == iv11.getId()) {            Boolean isShowing = (Boolean) iv11.getTag();            if (null == isShowing || isShowing == false) {                ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(iv11, "rotation", 0, 45);                objectAnimator.setDuration(500);                objectAnimator.start();                iv11.setTag(true);                showCircleMenu();            } else {                iv11.setTag(false);                ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(iv11, "rotation", 45, 0);                objectAnimator.setDuration(500);                objectAnimator.start();                closeCircleMenu();            }        } else {            Toast.makeText(this, "点击了第" + (imageViews.indexOf(v) == -1 ? imageViews2.indexOf(v) : imageViews.indexOf(v)) + "个", Toast.LENGTH_SHORT).show();        }    }    /**     * 显示扇形菜单     */    @RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)    private void showSectorMenu() {        /***第一步，遍历所要展示的菜单ImageView*/        for (int i = 0; i < imageViews.size(); i++) {            PointF point = new PointF();            /***第二步，根据菜单个数计算每个菜单之间的间隔角度*/            int avgAngle = (90 / (imageViews.size() - 1));            /**第三步，根据间隔角度计算出每个菜单相对于水平线起始位置的真实角度**/            int angle = avgAngle * i;            Log.d(TAG, "angle=" + angle);            /**             *              * 圆点坐标：(x0,y0)             * 半径：r             * 角度：a0             * 则圆上任一点为：（x1,y1）             * x1   =   x0   +   r   *   cos(ao   *   3.14   /180   )             * y1   =   y0   +   r   *   sin(ao   *   3.14   /180   )             */            /**第四步，根据每个菜单真实角度计算其坐标值**/            point.x = (float) Math.cos(angle * (Math.PI / 180)) * radius1;            point.y = (float) -Math.sin(angle * (Math.PI / 180)) * radius1;            Log.d(TAG, point.toString());            /**第五步，根据坐标执行位移动画**/            /**             * 第一个参数代表要操作的对象             * 第二个参数代表要操作的对象的属性             * 第三个参数代表要操作的对象的属性的起始值             * 第四个参数代表要操作的对象的属性的终止值             */            ObjectAnimator objectAnimatorX = ObjectAnimator.ofFloat(imageViews.get(i), "translationX", 0, point.x);            ObjectAnimator objectAnimatorY = ObjectAnimator.ofFloat(imageViews.get(i), "translationY", 0, point.y);            /**动画集合，用来编排动画**/            AnimatorSet animatorSet = new AnimatorSet();            /**设置动画时长**/            animatorSet.setDuration(500);            /**设置同时播放x方向的位移动画和y方向的位移动画**/            animatorSet.play(objectAnimatorX).with(objectAnimatorY);            /**开始播放动画**/            animatorSet.start();        }    }    /**     * 关闭扇形菜单     */    @RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)    private void closeSectorMenu() {        for (int i = 0; i < imageViews.size(); i++) {            PointF point = new PointF();            int avgAngle = (90 / (imageViews.size() - 1));            int angle = avgAngle * i;            Log.d(TAG, "angle=" + angle);            point.x = (float) Math.cos(angle * (Math.PI / 180)) * radius1;            point.y = (float) -Math.sin(angle * (Math.PI / 180)) * radius1;            Log.d(TAG, point.toString());            ObjectAnimator objectAnimatorX = ObjectAnimator.ofFloat(imageViews.get(i), "translationX", point.x, 0);            ObjectAnimator objectAnimatorY = ObjectAnimator.ofFloat(imageViews.get(i), "translationY", point.y, 0);            AnimatorSet animatorSet = new AnimatorSet();            animatorSet.setDuration(500);            animatorSet.play(objectAnimatorX).with(objectAnimatorY);            animatorSet.start();        }    }    /**     * 显示圆形菜单     */    @RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)    private void showCircleMenu() {        for (int i = 0; i < imageViews2.size(); i++) {            PointF point = new PointF();            int avgAngle = (360 / (imageViews2.size() - 1));            int angle = avgAngle * i;            Log.d(TAG, "angle=" + angle);            point.x = (float) Math.cos(angle * (Math.PI / 180)) * radius2;            point.y = (float) Math.sin(angle * (Math.PI / 180)) * radius2;            Log.d(TAG, point.toString());            ObjectAnimator objectAnimatorX = ObjectAnimator.ofFloat(imageViews2.get(i), "translationX", 0, point.x);            ObjectAnimator objectAnimatorY = ObjectAnimator.ofFloat(imageViews2.get(i), "translationY", 0, point.y);            AnimatorSet animatorSet = new AnimatorSet();            animatorSet.setDuration(500);            animatorSet.play(objectAnimatorX).with(objectAnimatorY);            animatorSet.start();        }    }    /**     * 关闭圆形菜单     */    @RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)    private void closeCircleMenu() {        for (int i = 0; i < imageViews2.size(); i++) {            PointF point = new PointF();            int avgAngle = (360 / (imageViews2.size() - 1));            int angle = avgAngle * i;            Log.d(TAG, "angle=" + angle);            point.x = (float) Math.cos(angle * (Math.PI / 180)) * radius2;            point.y = (float) Math.sin(angle * (Math.PI / 180)) * radius2;            Log.d(TAG, point.toString());            ObjectAnimator objectAnimatorX = ObjectAnimator.ofFloat(imageViews2.get(i), "translationX", point.x, 0);            ObjectAnimator objectAnimatorY = ObjectAnimator.ofFloat(imageViews2.get(i), "translationY", point.y, 0);            AnimatorSet animatorSet = new AnimatorSet();            animatorSet.setDuration(500);            animatorSet.play(objectAnimatorX).with(objectAnimatorY);            animatorSet.start();        }    }

关于扇形图的算法,有点小复杂所以我给大家做了一个思维图,相信大家应该都可以看懂

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