Android布局动画

给整个布局添加动画

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        LinearLayout v = (LinearLayout) inflater.inflate(R.layout.frag,container,false);  //使用LinearLayout        ScaleAnimation scaleAnimation = new ScaleAnimation(0,1,0,1);   //设置动画        scaleAnimation.setDuration(2000);        LayoutAnimationController lac = new LayoutAnimationController(scaleAnimation,0.5f);  //控制一组动画        lac.setOrder(LayoutAnimationController.ORDER_REVERSE);          v.setLayoutAnimation(lac);        return v;    }

---

布局内容改变产生的动画

        View v = inflater.inflate(R.layout.frag,container,false);        ll = (LinearLayout) v.findViewById(R.id.ll);        v.findViewById(R.id.fragbtn).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Button btn = new Button(getActivity());                btn.setText("remove");                ScaleAnimation ra = new ScaleAnimation(0,1,0,1);                ra.setDuration(2000);                btn.startAnimation(ra);                ll.addView(btn);                btn.setOnClickListener(new View.OnClickListener() {                    @Override                    public void onClick(View v) {                        ll.removeView(v);                    }                });            }        });

注意：主布局需要设置属性 android:animateLayoutChanges=”true” ，否则在布局中添加控件不会出现动画效果