Android 调用setAdapter（）后，GridView加载缓慢

我把

GridView

s放在我的3页

ViewPager

上。这个想法是建立一个日历的月视图，可以无限滚动到用户想要的地方

我的工作主要基于“无限视图分页”。但不是实现我自己的

视图

对象；我正在使用

GridView

s

下面是我对

onPageScrollStateChanged

方法的实现：

@Override
public void onPageScrollStateChanged(int state) {

    if (state == ViewPager.SCROLL_STATE_IDLE) {     

        FragmentPagerAdapter adapter = (FragmentPagerAdapter) mMonthPager
                    .getAdapter();

            // Called to obtain reference for the Fragments inside the ViewPager.
        CalendarGridMonthlyFragment oldMinMonthFragment = (CalendarGridMonthlyFragment) adapter
                    .instantiateItem(mMonthPager, 0);
        CalendarGridMonthlyFragment oldMidMonthFragment = (CalendarGridMonthlyFragment) adapter
                    .instantiateItem(mMonthPager, 1);
        CalendarGridMonthlyFragment oldMaxMonthFragment = (CalendarGridMonthlyFragment) adapter
                    .instantiateItem(mMonthPager, 2);

            // Get the selected month for each Fragment.
        final Calendar oldMinMonth = oldMinMonthFragment.getSelectedMonth();
        final Calendar oldMidMonth = oldMidMonthFragment.getSelectedMonth();
        final Calendar oldMaxMonth = oldMaxMonthFragment.getSelectedMonth();

        if (mFocusedPage == 0) {

            final Calendar newMonth = (Calendar) oldMinMonth.clone();
            newMonth.add(Calendar.MONTH, -1);

            oldMinMonthFragment.setSelectedMonth(newMonth);
            oldMidMonthFragment.setSelectedMonth(oldMinMonth);
            oldMaxMonthFragment.setSelectedMonth(oldMidMonth);

        } else if (mFocusedPage == 2) {

            final Calendar newMonth = (Calendar) oldMaxMonth.clone();
            newMonth.add(Calendar.MONTH, 1);

            oldMinMonthFragment.setSelectedMonth(oldMidMonth);
            oldMidMonthFragment.setSelectedMonth(oldMaxMonth);
            oldMaxMonthFragment.setSelectedMonth(newMonth);
            }  

        mMonthPager.setCurrentItem(1, false);
    }
}

public void setSelectedMonth(Calendar value) {

    mMonth = value.get(Calendar.MONTH);
    mYear = value.get(Calendar.YEAR);

    CalendarGridMonthlyAdapter newAdapter = new CalendarGridMonthlyAdapter(
            mContext, GRID_CHIP, mGridWidth, mGridHeight,
            mMonth, mYear);

    mGridView.setAdapter(newAdapter);
}

下面是我的

设置选择月

方法：

@Override
public void onPageScrollStateChanged(int state) {

    if (state == ViewPager.SCROLL_STATE_IDLE) {     

        FragmentPagerAdapter adapter = (FragmentPagerAdapter) mMonthPager
                    .getAdapter();

            // Called to obtain reference for the Fragments inside the ViewPager.
        CalendarGridMonthlyFragment oldMinMonthFragment = (CalendarGridMonthlyFragment) adapter
                    .instantiateItem(mMonthPager, 0);
        CalendarGridMonthlyFragment oldMidMonthFragment = (CalendarGridMonthlyFragment) adapter
                    .instantiateItem(mMonthPager, 1);
        CalendarGridMonthlyFragment oldMaxMonthFragment = (CalendarGridMonthlyFragment) adapter
                    .instantiateItem(mMonthPager, 2);

            // Get the selected month for each Fragment.
        final Calendar oldMinMonth = oldMinMonthFragment.getSelectedMonth();
        final Calendar oldMidMonth = oldMidMonthFragment.getSelectedMonth();
        final Calendar oldMaxMonth = oldMaxMonthFragment.getSelectedMonth();

        if (mFocusedPage == 0) {

            final Calendar newMonth = (Calendar) oldMinMonth.clone();
            newMonth.add(Calendar.MONTH, -1);

            oldMinMonthFragment.setSelectedMonth(newMonth);
            oldMidMonthFragment.setSelectedMonth(oldMinMonth);
            oldMaxMonthFragment.setSelectedMonth(oldMidMonth);

        } else if (mFocusedPage == 2) {

            final Calendar newMonth = (Calendar) oldMaxMonth.clone();
            newMonth.add(Calendar.MONTH, 1);

            oldMinMonthFragment.setSelectedMonth(oldMidMonth);
            oldMidMonthFragment.setSelectedMonth(oldMaxMonth);
            oldMaxMonthFragment.setSelectedMonth(newMonth);
            }  

        mMonthPager.setCurrentItem(1, false);
    }
}

public void setSelectedMonth(Calendar value) {

    mMonth = value.get(Calendar.MONTH);
    mYear = value.get(Calendar.YEAR);

    CalendarGridMonthlyAdapter newAdapter = new CalendarGridMonthlyAdapter(
            mContext, GRID_CHIP, mGridWidth, mGridHeight,
            mMonth, mYear);

    mGridView.setAdapter(newAdapter);
}

无限刷卡有效。但在卷轴结束后，会有一个明显的闪烁——几乎半秒

调试表明，

setAdapter

方法是所有这些麻烦的罪魁祸首。那么，有没有办法加快设置新适配器的过程

…或者是另一种方法

---

提前谢谢

不能使用相同的适配器实例，但更改月份和年份值吗？我尝试过了。但它没有改变任何观点。甚至在调用了

notifyDataSetChanged

方法之后，我认为您应该在这里使用单例片段模式：我也有同样的问题。即使GridView包含3个项目，当调用setAdapter时，GridView的动画速度也很慢。我想知道这是否是可以禁用的预期动画。