Android:使用viewPager加载限制片段

Question

我有3个片段由FragmentPagerAdapter管理,设置为viewPager.

我想逐个加载片段,但是当执行FragmentActivity的onCreate方法时,会执行2个第一个片段(onCreateView方法).

我试图用setOffscreenPageLimit方法限制片段加载但没有任何改变.

mPagerAdapter =  new MyPagerAdapter(super.getSupportFragmentManager(), fragments);
pager = (ViewPager) super.findViewById(R.id.tabviewpager);
pager.setOffscreenPageLimit(0);
pager.setAdapter(this.mPagerAdapter);

谢谢您的帮助 .

Answer 1

在源代码中OffscreenPageLimit设置的最小值为:1ViewPager

private static final int DEFAULT_OFFSCREEN_PAGES = 1;
....
public void setOffscreenPageLimit(int limit) {
    if (limit < DEFAULT_OFFSCREEN_PAGES) {
        Log.w(TAG, "Requested offscreen page limit " + limit + " too small; defaulting to " +
                DEFAULT_OFFSCREEN_PAGES);
        limit = DEFAULT_OFFSCREEN_PAGES;
    }
    if (limit != mOffscreenPageLimit) {
        mOffscreenPageLimit = limit;
        populate();
    }
}