我有一个 ViewPager,在它的适配器中我有 3 个孩子(片段)。这 3 个孩子的身高测量内容应该不同。
我已经尝试像这样重写 ViewPager 中的 onMeasure 方法Android:我无法让 ViewPager WRAP_CONTENT https://stackoverflow.com/questions/8394681/android-i-am-unable-to-have-viewpager-wrap-content/18167273#18167273
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
View view = null;
for (int i = 0; i < getChildCount(); i++) {
// find the first child view
view = getChildAt(i);
if (view != null) {
// measure the first child view with the specified measure spec
view.measure(widthMeasureSpec, heightMeasureSpec);
}
setMeasuredDimension(getMeasuredWidth(),
measureHeight(heightMeasureSpec, view));
}
}
但这并不适用于 ViewPager 中的所有子级,它只为所有子级设置一个高度。
这是从 ViewPager 扩展而来的 CustomViewPager:
这是 viewPager 的适配器:
public class MyPagerAdapter extends FragmentPagerAdapter {
private final String[] TITLES = { "card1", "card2", "Card3" };
public MyPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public CharSequence getPageTitle(int position) {
return TITLES[position];
}
@Override
public int getCount() {
return TITLES.length;
}
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return CookCardFragment.newInstance(position);
case 1:
return RecipeCardFragment.newInstance(position);
case 2:
return CookCardFragment.newInstance(position);
}
return null;
}
}