android-viewpager

问题 A short tutorial for people like me who had some trouble finding a way to implement TabHost and ViewPager, including page swiping with fingers and tab click to change pages. The shown solution is compatible with Android versions 2.2+. It includes Tabs initialization, ViewPager connected with Tabs and Page Scrolling management. Its main peculiarity is the optimization for earlier versions of Android (Android 2.2 (Froyo), API version 8) and the simple implementation for different purposes. 回答1:

问题 Is there a possibility to display two pages at the same time, when using a ViewPager ? I'm not looking for an edge effect, but rather for two full pages at the same time. Thanks in advance. 回答1: Please have a look at the getPageWidth Method in the corresponding PagerAdapter . Override it and return e.g. 0.8f to have all child pages span only 80% of the ViewPager's width. More info: http://developer.android.com/reference/android/support/v4/view/PagerAdapter.html#getPageWidth(int) 回答2: See my

问题 I need to have a ViewPager inside a ScrollView but ViewPager just does not appear when it's in ScrollView , everything is ok when i don't use ScrollView . I've seen a couple questions like this being asked here on stackoverflow or on other sites and all of them have been answered that you have to put android:fillViewport="true" to your scrollview to fix the problem, but this solution doesnt work for me, ViewPager still does not appear even if i have android:fillViewport="true" in my

问题 Ive got this strange issue, ViewPager's setCurrentItem(position, false) works perfectly fine, then im switching to another activity, and after im back to the first activity, the ViewPager always ends up on the first item. Even though ive added setCurrentItem to onResume method it still ignores it. Its not even throwing any exception when im trying to set item to out of bounds index. Though later on when i call this method, when the button "next" is clicked, it works like expected. Checked my

问题 Ive got this strange issue, ViewPager's setCurrentItem(position, false) works perfectly fine, then im switching to another activity, and after im back to the first activity, the ViewPager always ends up on the first item. Even though ive added setCurrentItem to onResume method it still ignores it. Its not even throwing any exception when im trying to set item to out of bounds index. Though later on when i call this method, when the button "next" is clicked, it works like expected. Checked my

问题 I have a ViewPager, and I'd like to get the current selected and visible view, not a position. getChildAt(getCurrentItem) returns wrong View This works not all the time. Sometimes returns null, sometimes just returns wrong View. @Override public void setUserVisibleHint(boolean isVisibleToUser) { super.setUserVisibleHint(isVisibleToUser); if (isVisibleToUser == true) { mFocusedListView = ListView; } } PageListener on ViewPager with getChildAt() also not working, not giving me the correct View

问题 I want to implement viewpager. In my view pager i need to show the images that comes from the Rest API. Please give me necessary suggestions and advice so that i can be successful in that. 回答1: First you need a custom viewpager adapter : Picasso is a great library to load images from. I will give you a link in case you need further help understanding it : http://square.github.io/picasso/ public class ViewPagerAdapter extends PagerAdapter { Context c; private List<String> _imagePaths; private

问题 I want to implement viewpager. In my view pager i need to show the images that comes from the Rest API. Please give me necessary suggestions and advice so that i can be successful in that. 回答1: First you need a custom viewpager adapter : Picasso is a great library to load images from. I will give you a link in case you need further help understanding it : http://square.github.io/picasso/ public class ViewPagerAdapter extends PagerAdapter { Context c; private List<String> _imagePaths; private

问题 What I want to achieve: FragmentOne is under Tab1 and FragmentTwoPortrait is under Tab2. I want to save the state of the recyclerview of FragmentTwoPortrait, then restore the fragment state along with the last scroll position of the recyclerview. Similar operation is intended when I rotate the device from landscape to portrait orientation. In my posted code here, Fragment transaction through the instance FragmentTwoLandscape is done inside a FrameLayout at the beginning to create the initial

问题 I'm working my way through the tutorials for android development and I'm currently trying to understand how the viewpager class works. I've downloaded the demo app here and I'm trying to wrap my head around how the collection of views is created. I understand that there's a constant, NUM_PAGES which sets the number of views generated. I would expect to find a loop or something creating NUM_PAGES worth of views at the entry point to the application but I can't find anything - it's driving me