Android移动view动画问题

Android写动画效果不是一般的麻烦，网上找了好久，终于解决了动画的问题，总结记录以共勉。

仅以水平方向移动效果做说明，垂直方向类似。

public void slideview(final float p1, final float p2) {
    TranslateAnimation animation = new TranslateAnimation(p1, p2, 0, 0);
    animation.setInterpolator(new OvershootInterpolator());
    animation.setDuration(durationMillis);
    animation.setStartOffset(delayMillis);
    animation.setAnimationListener(new Animation.AnimationListener() {
        @Override
        public void onAnimationStart(Animation animation) {
        }
                                                   
        @Override
        public void onAnimationRepeat(Animation animation) {
        }
                                                   
        @Override
        public void onAnimationEnd(Animation animation) {
            int left = view.getLeft()+(int)(p2-p1);
            int top = view.getTop();
            int width = view.getWidth();
            int height = view.getHeight();
            view.clearAnimation();
            view.layout(left, top, left+width, top+height);
        }
    });
    view.startAnimation(animation);
}

上述内容详见：http://www.cnblogs.com/eoiioe/archive/2012/08/29/2662546.html

以下是在项目中的应用实况：

public class WatchTvFragment extends Fragment {
    private static View view;
    static String TAG = "WatchTvFragment";
    TvChannelListFragment channelFragment;
    TvProgramListFragment programFragment;
    TvCommentListFragment commentFragment;
    FragmentManager fragmentMgr;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        if (view != null) {
            ViewGroup parent = (ViewGroup) view.getParent();
            if (parent != null)
                parent.removeView(view);
        }
        try {
            view = inflater.inflate(R.layout.fragment_watchtv, container, false);
        } catch (InflateException e) {
                             
        }
        fragmentMgr = getFragmentManager();
        channelFragment = (TvChannelListFragment) fragmentMgr.findFragmentById(R.id.channel_list_fragment);
        commentFragment = (TvCommentListFragment) fragmentMgr.findFragmentById(R.id.comment_list_fragment);
        programFragment = (TvProgramListFragment) fragmentMgr.findFragmentById(R.id.program_list_fragment);
        return view;
    }
    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        new AsyncTask<Void, Void, Void>() {
            @Override
            protected Void doInVoid...  params) {
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                return null;
            }
            protected void onPostExecute(Void result) {
                programFragment.getView().setOnTouchListener(programTouchListener);
            }
        }.execute();
    }
    public void slideview(final View view, final float p1, final float p2) {
        int durationMillis = 500;
        int delayMillis = 0;
        TranslateAnimation animation = new TranslateAnimation(p1, p2, 0, 0);
        animation.setInterpolator(new OvershootInterpolator());
        animation.setDuration(durationMillis);
        animation.setStartOffset(delayMillis);
        animation.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
            }
            @Override
            public void onAnimationRepeat(Animation animation) {
            }
            @Override
            public void onAnimationEnd(Animation animation) {
                int left = view.getLeft() + (int) (p2 - p1);
                int top = view.getTop();
                int width = view.getWidth();
                int height = view.getHeight();
                view.clearAnimation();
                view.layout(left, top, left + width, top + height);
            }
        });
        view.startAnimation(animation);
    }
    View.OnTouchListener programTouchListener = new OnProgramTouchListener();
    class OnProgramTouchListener implements View.OnTouchListener {
        int downX, upX;
        boolean bAtStartPosition = true; // 在初始位置
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            View view = programFragment.getView();
            int distance = channelFragment.getView().getMeasuredWidth();
            if (event.getAction() == MotionEvent.ACTION_DOWN) {
                downX = (int) event.getX(); // 取得按下时的坐标x
                return true;
            } else if (event.getAction() == MotionEvent.ACTION_UP) {
                upX = (int) event.getX(); // 取得松开时的坐标x;
                if (upX - downX > 100 && !bAtStartPosition) {
                    // 往右滑超过一定距离并且不在初始位置
                    bAtStartPosition = true;
                    slideview(view, 0, distance);
                } else if (upX - downX < -100 && bAtStartPosition) {
                    // 往左滑超过一定距离并且在初始位置
                    bAtStartPosition = false;
                    slideview(view, 0, -distance);
                }
                return true;
            } // ACTION_UP
                // ACTION_MOVE状态不做任何处理。
            return false;
        }
    }
}