fragmentpageradapter

How change ActionBar colour when swiping between fragments (Material Design)?

雨燕双飞 提交于 2019-11-29 03:59:01
问题 I have an app i am doing, which has a FragmentPagerAdapter setup with 3 fragments to swipe between on the main page. I have been trying to get it setup so as you swipe between fragments, the action bar changes color (fades in and out). However i am not sure how i should do this. What method is called when you swipe between fragments? I.E where should i put the code to change the action bar colour? And also how would i get the fade in and out effect (so it fades out one colour into another one

FragmentPagerAdapter getItem is not being triggered

早过忘川 提交于 2019-11-28 18:35:48
Currently, with a FragmentActivity , I toggle among 2 type of Fragments using the following code. private void toggle() { Fragment oldFragment = getSupportFragmentManager().findFragmentById(R.id.content); Fragment fragment = null; if (oldFragment instanceof ColorFragment) { fragment = new ViewPagerFragment(); } else { fragment = new ColorFragment(android.R.color.black); } getSupportFragmentManager().beginTransaction().replace(R.id.content, fragment).commitAllowingStateLoss(); } 2 Fragments are being toggle. ColorFragment - A simple fragment which fill up its background with solid black color.

FragmentPagerAdapter Swipe to show ListView 1/3 Screen Width

瘦欲@ 提交于 2019-11-28 17:33:48
问题 EDIT: See my answer below--> I am wanting to have a view that when swiped to the right, the listView is shown. Very much similar to what is implemented in the new Google Play Store (Sample image below). I think its a ViewPager but I tried duplicating it without prevail. I was thinking it may just be that the 'listView Page' width attribute was set to a specific dp but that doesn't work. I also tried modifying pakerfeldt's viewFlow and cant figure out how Google does this Am I on the right

FragmentPagerAdapter Exists Only In Android.Support.V4.App (and not Android.App)

那年仲夏 提交于 2019-11-28 15:40:49
I cannot find find FragmentPagerAdapter within Android.App. I do not want to use the Fragment's from Android.Support.V4.App, as my target API is 14 and higher (Android 4.0 and up). So, I want to just use plain of Android.App.Fragments, and there associated classes. I only have found it within Android.Support.V4.App, but this doesn't suffice for me b/c I'm trying to use Android.App.Fragment's (not Android.Support.V4.App.Fragment's) and there related classes within Android.App (not Android.Support.V4.App), and my code wont compile if I derive my pager from FragmentPagerAdapter if its from the

How to play short sounds while swiping pages ?

纵饮孤独 提交于 2019-11-28 09:10:37
问题 I have problem with ViewPager and can't find answer on this site or via a Google search. How to play short sounds while swiping pages? How can I change my code, I want to add mediaplayer/Play sound . (The sounds in the raw folder) Thanks, @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); MyPagerAdapter adapter = new MyPagerAdapter(); ViewPager myPager = (ViewPager) findViewById(R.id.myfivepanelpager); myPager

When is FragmentPagerAdapter's getItem called?

和自甴很熟 提交于 2019-11-28 04:20:56
I'm writing an application that uses the FragmentPagerAdapter. The fragments in the adapter need to be updated according to outside data - but that doesn't happen. I noticed that the fragment classes are only instantiated once, in the getItem function: @Override public Fragment getItem(int position) { TabInfo info = mTabs.get(position); return Fragment.instantiate(mContext, info.clss.getName(), info.args); } Even if I delete the class and use a new one, nothing helps - this method is only called once, the first time that the tab is populated, and then never again. Anyone has an idea why?

Android getting fragment that is in FragmentPagerAdapter

◇◆丶佛笑我妖孽 提交于 2019-11-28 03:34:41
I have following problem: I have one activity in which I have two tabs which are made both as fragments using FragmentPagerAdapter In some moment I would like to change View of one of these fragments, but I am not able to findFragmentById() or findFragmentByTag() I am unable to set id, because I am not declaring Fragment in XML, because of the FragmentPagerAdapter And when I am trying to set tag I am getting following problem: 08-15 21:46:23.805: E/AndroidRuntime(9297): java.lang.IllegalStateException: Can't change tag of fragment Companies{416d7b78 id=0x7f04002e companies}: was companies now

Navigating back to FragmentPagerAdapter -> fragments are empty

无人久伴 提交于 2019-11-28 03:27:10
I have a Fragment (I'll call it pagerFragment ) that is added to the backstack and is visible. It holds a viewPager with a FragmentPagerAdapter . The FragmentPagerAdapter holds (let's say) two fragments: A and B. First adding of the fragments works great. Fragment A has a button that once clicked, adds a fragment (C) to the backstack. The problem is this: if I add that fragment (C), and then click back, the pagerAdapter is empty, and I cannot see any fragments inside. If I use a hack, and destroy the children fragments (A and B) in the pagerFragment s onDestroyView() , this solves the problem,

FragmentPagerAdapter - How to handle Orientation Changes?

╄→гoц情女王★ 提交于 2019-11-27 22:48:49
I use a FragmentPagerAdapter containing several Fragments that need to be notified about changes to the database . I do this by iterating over the fragments, which implement a callback interface, and calling a refreshData() method. This works just fine until the device changes orientation. After an orientation change, the fragment UI does not visibly refresh even though the method call seems to work. From what I have read so far this occurs because the FragmentPagerAdapter handles the fragment life-cycle and the fragments that receive the callback are not the ones that are actually displayed.

Replacing ViewPager with Fragment - Then Navigating Back

我的未来我决定 提交于 2019-11-27 18:31:53
I've got an activity which initially hosts a ViewPager, hooked up to a FragmentPagerAdapter. When the user clicks on an item inside the ViewPager's child fragment, I'm using a FragmentTransaction to replace an empty container view with a new Fragment which I want to navigate to. If I use addToBackStack() on the transaction, commit the transaction and then navigate back, I am not returned to the ViewPager's views (the initial layout). If I don't use addToBackStack() on the transaction, commit the transaction and then navigate back, the application exits. It seems apparent that the ViewPager is