Develop Reference

Issue with replacing fragment in view pager from another fragment

I need to replace fragment in view pager in an activity on a nework call success in another fragment. View pager is inside my dashboard activity. Here is get item method
#Override
public Fragment getItem(int pos) {
Fragment fragment = null;
switch (pos) {
case 0:
fragment = new HomeFragment();
break;
case 1:
fragment = new SponsorshipOffersFragment();
break;
case 2:
if (mPreferenceManager.getConnectProfileStatus()) {
fragment = new CollaborationFragment();
} else {
fragment = new ConnectSettingFragment();
}
break;
case 3:
fragment = new ProtfolioFragment();
break;
case 4:
fragment = new SocialSummaryFragment();
break;
}
return fragment;
}
For case 2, first time getConnectProfileStatus will return false and ConnectSettingFragment will get call. After submitting profile from ConnectSettingFragment, on success I need to call CollaborationFragment.
Can someone help me to do ? I am calling below method from fragment
public void replaceFrament() {
mViewPager.setCurrentItem(2);
}
that is inside activity but nothing happening.

ClassCastException when new Fragment is added to SectionsPagerAdapter

I have an activity that holds my tabbed layout fragments. When I have 2 tabs everything works fine, but when I add a new tab I get
Caused by: java.lang.ClassCastException: rauhalamika.rcontrolble.HomeFragment cannot be cast to rauhalamika.rcontrolble.ManualFragment
Here is the SectionsPagerAdapter:
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position){
case 0:
PresetsFragment presets = new PresetsFragment();
return presets;
case 1:
ManualFragment manual = new ManualFragment();
return manual;
case 2:
HomeFragment home = new HomeFragment();
return home;
default:
return null;
}
}
#Override
public int getCount() {
// Show 3 total pages.
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "Presets";
case 1:
return "Manual";
case 2:
return "Home";
}
return null;
}
}
And the problem occurs when I'm calling ManualFragment's method from the activity like this:
((ManualFragment)getSupportFragmentManager().findFragmentById(R.id.container)).updatePressure(values);
This method updates a bunch of TextViews in the ManualFragment.
Everything works as it should if I only have PresetsFragment a ManualFragment, but when I add HomeFragment the app crashes.
What am I doing wrong?

When using FragmentPagerAdapter you can not get fragment by id.
getSupportFragmentManager().findFragmentById(R.id.container)
change this to
getSupportFragmentManager().findFragmentByTag("f1")
For tagging fragment Read This thread.

TabsPagerAdapter How to start with case 1 or another? - Android

I have 12 page in tabspageradapter and I don't want to start with case 0. For example I want to start with case 4. How can I do that?
This is my adapter.
public class TabsPagerAdapter extends FragmentPagerAdapter {
public TabsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int index) {
switch (index) {
case 0:
return new JanuaryFragment();
case 1:
return new FebFragment();
case 2:
return new MarchFragment();
case 3:
return new AprFragment();
case 4:
return new MayFragment();
case 5:
return new JuneFragment();
case 6:
return new JulyFragment();
case 7:
return new AugustFragment();
case 8:
return new SepFragment();
case 9:
return new OctFragment();
case 10:
return new NovFragment();
case 11:
return new DecFragment();
default:
return null;
}
}
#Override
public int getCount() {
// get item count - equal to number of tabs
return 12;
}
}
Thanks for your help in advance :)

How do I tap to move to the next ViewPager page fragment?

I have a ViewPager setup that's been working fine for my app but it only lets me swipe the screen to move to the next slide. What I want is to also be able to move to the next slide by tapping the screen. Is this possible?
I've been trying to figure this out for a week but I couldn't find the right code to make it work.
Here's what I've done so far:
public class JoyfulHappyfuntime extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_joyful_happyfuntime);
ViewPager pager = (ViewPager) findViewById(R.id.pager);
pager.setAdapter(new MyPagerAdapter(getSupportFragmentManager()));
}
private class MyPagerAdapter extends FragmentPagerAdapter {
public MyPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int pos) {
switch(pos) {
case 0: return new BoopTheName();
case 1: return new Creed();
case 2: return new Waffles();
case 3: return new Smilea();
case 4: return new Smileb();
case 5: return new Smilec();
case 6: return new PancakesOne();
case 7: return new FirstJoyfulHappyfuntime();
case 8: return new Waffles();
case 9: return new Smilea();
case 10: return new Smileb();
case 11: return new Smilec();
//etc
default: return new Continue();
}
}
#Override
public int getCount() {
return 74;
}
}
}

You can try one of those :
Adding a transparent view ontop where you handle the onClick to change
the position to the next.
using a ViewPagerIndicator on top to let the user click on the section he wants
View Pager Tutorial

how to replace a fragment within a ListViewPagerAdapter.java

I'm using ViewPager in a fragment. It has 3 tabs
Here's the code of my fragmentOagerAdapter:
#Override
public Fragment getItem(final int position) {
Fragment fragment = null;
switch (position) {
case 0:
fragment = Fragment.instantiate(this.context, ClassA.class.getName());
break;
case 1:
fragment = Fragment.instantiate(this.context, ClassB.class.getName());
break;
case 2:
fragment = Fragment.instantiate(this.context, ClassC.class.getName());
break;
}
return fragment;
}
#Override
public CharSequence getPageTitle(final int position) {
String res = "";
switch (position) {
case 0:
res = "nameA";
break;
case 1:
res = "nameB";
break;
case 2:
res = "nameC";
break;
}
return res;
}
#Override
public int getCount() {
return 3;
}
I'm adding a a button in my main fragment that will allow me to switch between a list display and a grid display.
So what I want is to have a dynamic fragment depending on some enum stored within the Preferences
I want to do this for the 1st tab (position 0)
So I do the following:
#Override
public Fragment getItem(final int position) {
Fragment fragment = null;
switch (position) {
case 0:
switch (Settings.getInstance().getProductDisplayMode()) {
case LARGE_GRID:
fragment = Fragment.instantiate(this.context, ClassALargeGrid.class.getName());
break;
case SMALL_GRID:
fragment = Fragment.instantiate(this.context, ClassASmallGrid.class.getName());
break;
case LIST:
default:
fragment = Fragment.instantiate(this.context, ClassA.class.getName());
break;
}
break;
case 1:
fragment = Fragment.instantiate(this.context, ClassB.class.getName());
break;
case 2:
fragment = Fragment.instantiate(this.context, ClassC.class.getName());
break;
}
return fragment;
}
...
So it works fine when first opening the activity, but I don't know how to switch the fragment displayed in the first tab dynamically.
I tried calling destroyItem() on the FragmentPagerAdapter but it doesn't help...
Any idea ?

I actually had this problem a while back. I wound up having to take the fragment out of the viewpager and then use the FragmentManager to swap out the fragments dynamically.
Then, when I wanted to switch to another "page," I wrote some custom animations to "slide in" a fragment that hosted a ViewPager
Not a pretty solution, but it worked.