简书链接:【原创】fragment隐藏显示方式来控制切换，切换过快又使用动画导致重叠问题解决
文章字数：86,阅读全文大约需要1分钟

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    static long lastClickTime = 0;

    public static Fragment switchPagesByHide(Map<Integer, PairX<String, SoftReference<Fragment>>> map, FragmentManager fragmentManager, int fragment_container_id, int key) {

        Fragment fragment;
        ArrayList<Fragment> needHideFragments = new ArrayList<>();
        for (Integer currentKey : map.keySet()) {
            if (currentKey == key) {
                continue;
            }
            PairX<String, SoftReference<Fragment>> pair = map.get(currentKey);
            fragment = pair.second.get();
            if (fragment == null) {
                fragment = fragmentManager.findFragmentByTag(getFragmentTagName(pair.first));
                if (fragment != null && fragment.isAdded()) {
                    needHideFragments.add(fragment);
                    if (BuildConfig.DEBUG && AppContext.DEBUG_) {
                        Log.w(TAG, "from tag fragment :" + fragment.getClass().getSimpleName());
                    }
                }
                continue;
            } else if (fragment.isAdded()) {
                needHideFragments.add(fragment);
            } else {
                fragment = fragmentManager.findFragmentByTag(getFragmentTagName(fragment.getClass()));
                if (fragment != null && fragment.isAdded()) {
                    needHideFragments.add(fragment);
                    if (BuildConfig.DEBUG && AppContext.DEBUG_) {
                        Log.w(TAG, " and instance not add,from tag fragment :" + fragment.getClass().getSimpleName());
                    }
                }
            }
        }
        PairX<String, SoftReference<Fragment>> pair = map.get(key);

        Fragment currentFragment = pair.second.get();
        Fragment tagCurrentFragment = fragmentManager.findFragmentByTag(getFragmentTagName(currentFragment.getClass().getName()));
        if (currentFragment == null) {
            if (tagCurrentFragment != null) {
                currentFragment = tagCurrentFragment;
            } else {
                try {
                    currentFragment = (Fragment) Class.forName(pair.first).newInstance();
                    pair.second = new SoftReference<>(currentFragment);
                } catch (Throwable e) {
                    e.printStackTrace();
                }
            }
        } else if (tagCurrentFragment != null && tagCurrentFragment.isAdded()) {//当前如果tag里面有还是需要隐藏它.
            needHideFragments.add(tagCurrentFragment);
        }

        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        for (Fragment fragment_ : needHideFragments) {
            //if (!fragment_.isHidden()) {
            if (BuildConfig.DEBUG && AppContext.DEBUG_) {
                if (fragment_.isHidden()) {
                    Log.w(TAG, "REPEAT_HIDE_" + fragment_.getClass().getSimpleName());
                } else {

                    Log.w(TAG, "HIDE_" + fragment_.getClass().getSimpleName());
                }
            }
            fragmentTransaction.hide(fragment_);
//            popBackStackImmediate
            //}
        }
        if (!(currentFragment instanceof MyFragment) && !AppUtils.isPadBySizeLarge(AppContext.getInstance())) {//因为隐藏了actionbar，所以会出现白屏，不能动画
            long currentMs = System.currentTimeMillis();
            if (lastClickTime == 0 || currentMs - lastClickTime > 5500) {
                currentFragment.setEnterTransition(createTransition());
                currentFragment.setReenterTransition(createTransition());
                lastClickTime = currentMs;
                if(BuildConfig.DEBUG){
                    Log.w(TAG,"_fragment anim:"+currentFragment.getClass().getSimpleName());
                }
            }else{//必须设置，否则依然会因为切换过快导致重复.
                currentFragment.setEnterTransition(null);
                currentFragment.setReenterTransition(null);
            }

        }
        if (currentFragment.isAdded()) {
            if (BuildConfig.DEBUG) {
                Log.w(TAG, "FRAGMENT_SHOW:"+currentFragment.getClass().getSimpleName()+",before_hidden:" + currentFragment.isHidden() + ",save:" + currentFragment.isStateSaved() + ",detach:" + currentFragment.isDetached() + ",add:" + currentFragment.isAdded());
            }
            fragmentTransaction.show(currentFragment);
        } else {
            if (BuildConfig.DEBUG) {
                Log.w(TAG, "FRAGMENT_ADD:" + currentFragment.isHidden() + ",save:" + currentFragment.isStateSaved() + ",detach:" + currentFragment.isDetached() + ",add:" + currentFragment.isAdded() + "," + currentFragment);
            }
            fragmentTransaction.add(fragment_container_id == 0 ? R.id.fragment_space : fragment_container_id, currentFragment, getFragmentTagName(currentFragment.getClass()));
        }
        fragmentTransaction.commitAllowingStateLoss();

        return currentFragment;
    }

解决办法，频繁点击就直接清除动画，不使用动画