用属性动画模仿展开菜单

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="5dp"
    android:paddingTop="5dp">

    <ImageView
        android:id="@+id/imageView_b"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="5dp"
        android:paddingTop="5dp"
        android:src="@drawable/composer_camera"/>

    <ImageView
        android:id="@+id/imageView_a"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="5dp"
        android:paddingTop="5dp"
        android:src="@drawable/composer_music"/>

    <ImageView
        android:id="@+id/imageView_c"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="5dp"
        android:paddingTop="5dp"
        android:src="@drawable/composer_place"/>

    <ImageView
        android:id="@+id/imageView_d"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="5dp"
        android:paddingTop="5dp"
        android:src="@drawable/composer_thought"/>

    <ImageView
        android:id="@+id/imageView_e"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="5dp"
        android:paddingTop="5dp"
        android:src="@drawable/composer_with"/>

    <ImageView
        android:id="@+id/imageView_f"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingTop="1dp"
        android:src="@drawable/composer_button"/>

    <ImageView
        android:id="@+id/imageView_g"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="22dp"
        android:paddingTop="22dp"
        android:src="@drawable/composer_icn_plus"/>

</FrameLayout>

private  int[] res={R.id.imageView_a,R.id.imageView_b,R.id.imageView_c,
            R.id.imageView_d,R.id.imageView_e,R.id.imageView_f,R.id.imageView_g};
    private List<ImageView> imageViewList = new ArrayList<ImageView>();
    private Boolean flag = false;
    private PropertyValuesHolder p1,p2;

    @Override
    public void onClick(View v) {
        switch (v.getId())
        {
            case R.id.imageView_g:
                if(!flag)
                    startAnimation();
                else
                    closeAnimation();
                break;
            default:
                Toast.makeText(PlusActivity.this, " " + v.getId(), Toast.LENGTH_SHORT).show();
                break;
        }
    }

    private void closeAnimation()
    {
        ObjectAnimator.ofFloat(imageViewList.get(6),"rotation",20f,360f).setDuration(1000).start();
        for (int i=0;i<res.length-2;i++)
        {
            ObjectAnimator animator = ObjectAnimator.ofFloat(imageViewList.get(i),"translationY",i*60f,0f);
            animator.setDuration(1000);
            animator.setInterpolator(new BounceInterpolator());
            animator.setStartDelay(i*300);
            animator.start();
        }
        flag = false;
    }


    /*
    开始动画
     */
    private void startAnimation()
    {
        ObjectAnimator.ofFloat(imageViewList.get(6),"rotation",20f,360f).setDuration(1000).start();
        for (int i=0;i<res.length-2;i++)
        {
            ObjectAnimator animator = ObjectAnimator.ofFloat(imageViewList.get(i),"translationY",0f,i*60f);
            animator.setDuration(1000);
            animator.setInterpolator(new BounceInterpolator());
            animator.setStartDelay(i*300);
            animator.start();
        }
        flag = true;
    }



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my);

        for(int i=0;i<res.length;i++)
        {
            ImageView imageView = (ImageView)findViewById(res[i]);
            imageView.setOnClickListener(this);
            imageViewList.add(imageView);
        }
    }