属性动画点击自定义View实现拉伸收缩的效果

public class StartActivity extends AppCompatActivity {
    private int i=10;
    private Handler handler=new Handler();
    private int a=0;
    ImageView icon;
    ImageView gt;
    ImageView copy;
    ImageView xg;
    private ObjectAnimator animator;
    private ObjectAnimator fanimator;
    private ObjectAnimator animator1;
    private ObjectAnimator fanimator1;
    private ObjectAnimator animator2;
    private ObjectAnimator fanimator2;
    private ObjectAnimator animator3;
    private ObjectAnimator fanimator3;
    private Button jump;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_start);
        icon = (ImageView) findViewById(R.id.icon);
        gt = (ImageView) findViewById(R.id.gt);
        copy = (ImageView) findViewById(R.id.copy);
        xg = (ImageView) findViewById(R.id.xg);
        jump = findViewById(R.id.jump);

        doJump();


//-----伸出时的动画
        animator = ObjectAnimator.ofFloat(icon, "rotation", 0f, 180f);
        animator1 = ObjectAnimator.ofFloat(gt, "translationX", 0f,-80f);
        animator2 = ObjectAnimator.ofFloat(copy, "translationX", 0f,-160f);
        animator3 = ObjectAnimator.ofFloat(xg, "translationX", 0f,-240f);
        //----缩回时的动画
        fanimator = ObjectAnimator.ofFloat(icon, "rotation", 0f, -180f);
        fanimator1 = ObjectAnimator.ofFloat(gt, "translationX", -80f,0f);
        fanimator2 = ObjectAnimator.ofFloat(copy, "translationX", -160f,0f);
        fanimator3 = ObjectAnimator.ofFloat(xg, "translationX", -240f,0f);

//给伸出动画设置监听

        animator.addListener(new Animator.AnimatorListener() {
            @Override
            public void onAnimationStart(Animator animator) {

            }

            @Override
            public void onAnimationEnd(Animator animator) {
                icon.setImageResource(R.drawable.tamkero3);//动画结束改变图片

            }

            @Override
            public void onAnimationCancel(Animator animator) {

            }

            @Override
            public void onAnimationRepeat(Animator animator) {

            }
        });

//给缩回动画设置监听

        fanimator.addListener(new Animator.AnimatorListener() {
            @Override
            public void onAnimationStart(Animator animator) {

            }

            @Override
            public void onAnimationEnd(Animator animator) {
                icon.setImageResource(R.drawable.xlistview_arrow);//改变图片
            }

            @Override
            public void onAnimationCancel(Animator animator) {

            }

            @Override
            public void onAnimationRepeat(Animator animator) {

            }
        });


       icon.setOnClickListener(new View.OnClickListener() {//图片的点击事件
            @Override
            public void onClick(View view) {
                a++;
                if(a%2==1){//第一次点击是实现伸出效果
                    AnimatorSet animSet = new AnimatorSet();//动画集合
                    animSet.play(animator).with(animator1).with(animator2).with(animator3);
                    animSet.setDuration(3000);
                    animSet.start();

                }else{//再点击一次实现缩回效果
                    AnimatorSet animSet1 = new AnimatorSet();//动画集合
                    animSet1.play(fanimator).with(fanimator1).with(fanimator2).with(fanimator3);
                    animSet1.setDuration(3000);
                    animSet1.start();
                }
            }
        });


    }

    public  void doJump() {
        jump.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(StartActivity.this,MainActivity.class);
                startActivity(intent);
            }
        });
        final Timer timer=new Timer();
        timer.schedule(new TimerTask() {
            @Override
            public void run() {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        if (i==1){
                            Intent intent=new Intent(StartActivity.this,MainActivity.class);
                            startActivity(intent);
                            timer.cancel();
                        }
                        i--;
                    }
                });
            }
        },0,1000);


    }
}