There are a few threads on this topic already, but unfortunately I couldn't solve my problem.
I have 2 tabs. When one tab is finished I want to update another one.
I tried the following in the first FragmentTab:
@UiThread
void updateGallery() {
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.layout.gallery_layout, new GalleryFragment());
ft.commit();
}
I get the following exception:
01-04 02:27:51.805: E/AndroidRuntime(28235): java.lang.IllegalArgumentException: No view found for id 0x7f030002 for fragment GalleryFragment{41d7dcf0 #4 id=0x7f030002}
and
@UiThread
void updateGallery() {
// returns null (ById does also return null)
GalleryFragment frg = (GalleryFragment) getFragmentManager().findFragmentByTag("Gallery");
frg.init();
}
and I also tried to update the necessary data directly:
GalleryFragment gf = new GalleryFragment();
gf.setImageUrls(findDocumentListAll());
gf.getDocumentAdapter().notifyDataSetChanged(); // returns nullpointerexception
From what I read so far the problem may be that I never add a <fragment>
in my main.xml
(MainActivity.java) but add them in my MainActivity
like this:
MainActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("Gallery").setIndicator("", getResources().getDrawable(R.drawable.gallery)));
MainActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("Camera").setIndicator("", getResources().getDrawable(R.drawable.camera)));
mTabHost.setOnTabChangedListener(this);
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
mViewPager.setAdapter(mAdapter);
mViewPager.setOnPageChangeListener(MainActivity.this);
with the Tab Definition in my Adapter like:
@Override
public Fragment getItem(int index) {
switch (index) {
case 0:
return new GalleryFragment_();
case 1:
return new CameraFragment_();
// ...
}
I'm not sure if that matters, but I always use the android.support.v4.app.Fragment;
and not the android.app.Fragment;