如果你真的相信有很多静片段在内存消耗大量的内存，也许你可以尝试这样的事：

If you are really sure that having lots of static fragments in memory consumes a huge amount of memory, maybe you could try something like this:

而不是使用的：

    @Override
    public Fragment getItem(int position) {
        // getItem is called to instantiate the fragment for the given page.
        // Return a PlaceholderFragment (defined as a static inner class below).
        return PlaceholderFragment.newInstance(position);
    }

其实你可以声明地图片段。其主要目标是重新使用previously创建片段，比保持宣称的新实例的。首先，宣布该code对片段的活动（不在SectionsPagerAdapter）：

You could actually declare a Map of fragment. The main goal is to re-use previously created fragments, than keep declaring new instance. Firstly, declare this code on fragment's activity (NOT in SectionsPagerAdapter):

private Map<Integer, PlaceholderFragment> mPlaceHolderFragmentArray = new LinkedHashMap<Integer, PlaceholderFragment>(); 

然后更换的getItem（INT位置）方法SectionsPagerAdapter本：

Then replace getItem(int position) method in SectionsPagerAdapter with this:

    @Override
    public Fragment getItem(int position) {
        // getItem is called to instantiate the fragment for the given page.
        // Return a PlaceholderFragment (defined as a static inner class below).
        PlaceholderFragment fragment = mPlaceHolderFragmentArray.get(position);
        if(fragment == null){
            fragment = PlaceholderFragment.newInstance(position);
            mPlaceHolderFragmentArray.put(position, fragment);
        }
        return fragment;
    }

我不知道是否有什么更好的办法，但目前我使用这个对我的codeS。

I don't know if there are any better way, but I'm currently using this on my codes.