I'm developing android screen for showing 2 different dashboard using tablayout & viewpager but only one screen shown at two different tabs(i.e. on MyDashboard & TeamDashboard).Please check my code.I'm new to android development.
I tried to use viewpager with pageradapter for swipe the screen.
public class ViewPagerAdapter extends FragmentPagerAdapter {
private int position;
private String tabTitles[] = new String[]{"MyDashboard", "Team` `Dashboard"};
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int i) {
// MyDashboard_Fragment dashboard_fragment=new `MyDashboard_Fragment();
// TeamDashboard_Fragment dashboard_fragment1=new `TeamDashboard_Fragment();
// position = position + 1;
// Bundle bundle=new Bundle();
// bundle.putString("message","Fragment :" +position);
// dashboard_fragment.setArguments(bundle);
// return dashboard_fragment;
Fragment fragment = null;
switch (position) {
case 0:
fragment = new MyDashboard_Fragment();
break;
case 1:
fragment = new TeamDashboard_Fragment();
break;
}
return fragment;
}
#Override
public int getCount() {
return 2;
}
#Nullable
#Override
public CharSequence getPageTitle(int position) {
return tabTitles[position];
}
}
Problem is because you are not assigning the new value to position variable before use it, please update your code like bellow
public class ViewPagerAdapter extends FragmentPagerAdapter {
private int position;
private String tabTitles[] = new String[]{"MyDashboard", "Team` `Dashboard"};
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int i) {
// MyDashboard_Fragment dashboard_fragment=new `MyDashboard_Fragment();
// TeamDashboard_Fragment dashboard_fragment1=new `TeamDashboard_Fragment();
// position = position + 1;
// Bundle bundle=new Bundle();
// bundle.putString("message","Fragment :" +position);
// dashboard_fragment.setArguments(bundle);
// return dashboard_fragment;
position=i;
Fragment fragment = null;
switch (position) {
case 0:
fragment = new MyDashboard_Fragment();
break;
case 1:
fragment = new TeamDashboard_Fragment();
break;
}
return fragment;
}
#Override
public int getCount() {
return 2;
}
#Nullable
#Override
public CharSequence getPageTitle(int position) {
return tabTitles[position];
}
}
Related
I have an activity, which includes ViewPager with three fragments. In the second fragment i have ViewPager with two different fragments too.
This my MainActivityPagerAdapter which connected with ViewPager in MainActivity:
public class MainActivityPagerAdapter extends FragmentStatePagerAdapter implements LoginView.LoginStateChangeListener {
private static final String TAG = MainActivityPagerAdapter.class.getName();
private MapFragment mapFragment = new MapFragment();
private UserProfileFragment userProfileFragment = new UserProfileFragment();
private CompanyProfileFragment CompanyProfileFragment = new DiveCenterProfileFragment();
private NotificationsFragment notificationsFragment = new notificationsFragment();
public MainActivityPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return mapFragment;
case 1:
return notificationsFragment;
case 2:
switch (MyApplication.getInstance().getSharedPreferenceHelper().getActiveUserType()) {
case DIVECENTER:
return companyProfileFragment;
case DIVER:
case INSTRUCTOR:
return userProfileFragment;
case NONE:
return userProfileFragment;
}
default:
return null;
}
}
#Override
public int getCount() {
return 3;
}
#Override
public int getItemPosition(Object object) {
Log.i(TAG, "getItemPosition");
return POSITION_NONE;
}
#Override
public CharSequence getPageTitle(int position) {
return null;
}
}
This my pager adapter for ViewPager at the second fragment:
public class NotificationsPagerAdapter extends FragmentStatePagerAdapter {
private PersonalNotificationsFragment personalNotificationsFragment = new PersonalNotificationsFragment();
private ActivityNotificationsFragment activityNotificationsFragment = new ActivityNotificationsFragment();
public NotificationsPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return personalNotificationsFragment;
case 1:
return activityNotificationsFragment;
default:
return null;
}
}
#Override
public int getCount() {
return 2;
}
public void setPersonalNotificationsFragment(PersonalNotificationsFragment personalNotificationsFragment) {
this.personalNotificationsFragment = personalNotificationsFragment;
}
public void setActivityNotificationsFragment(ActivityNotificationsFragment activityNotificationsFragment) {
this.activityNotificationsFragment = activityNotificationsFragment;
}
#Override
public CharSequence getPageTitle(int position) {
return null;
}
#Override
public int getItemPosition(Object object) {
return POSITION_NONE;
}
}
So, there are two user types in app:
Simple user
Company
When user changing his type i need to refresh all fragments in MainActivity including fragments inside second fragment. For this I'm using notifyDataSetChanged() for MainActivityViewPager, it work correctly, but fragments inside second fragment don't update(onCreateView don't called, and i see only empty views).
In what may be a problem?
Use getChildFragmentManager() for inner viewPager
Use getChildFragmentManager() instead of getFragmentManager() for changing fragments inside the viewPager
I was able to successfully implement PagerSlidingTabStrip with my app.
But my application requires a tab with Text And Icons.
Unfortunately, I am not able to do that.
public class Pager extends FragmentStatePagerAdapter implements PagerSlidingTabStrip.IconTabProvider {
private int tabIcons[] = {R.drawable.ic_explore, R.drawable.ic_nearby, R.drawable.ic_road_rescue};
private String tabTitles[] = new String[] { "Tab1", "Tab2", "Tab3" };
public Pager(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new Explore();
case 1:
return new Nearby();
case 2:
return new RoadRescue();
}
return null;
}
#Override
public int getCount() {
return tabIcons.length;
}
#Override
public CharSequence getPageTitle(int position) {
return tabTitles[position];
}
#Override
public int getPageIconResId(int position) {
return tabIcons[position];
}
}
What seems to be wrong with my code? Thanks
I have faced this issue, maybe there is already the same issue, but I cannot find in this page. So my problem is that I have my activity, which initialize ViewPager and I have 2 fragments in this viewpager.
My Activity:
public class ShoppingDetailsActivity extends BaseActivity {
ViewPagerAdapter adapter;
#Bind(R.id.view_pager)
ViewPager viewPager;
#Bind(R.id.pager_tabs)
PagerSlidingTabStrip pagerSlidingTabStrip;
int shop_id;
int id;
int shop_sub_id;
int subId;
int shop_sub_sub_id;
int subSubId;
int shop_detail_id;
int detailId;
public static final String SHOP_ID = "shop_id";
public static final String SHOP_SUB_ID = "shop_sub_id";
public static final String SHOP_SUB_SUB_ID = "shop_sub_sub_id";
public static final String SHOP_DETAIL_ID = "shop_detail_id";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
activityComponent().inject(this);
setContentView(R.layout.activity_shopping_details);
ButterKnife.bind(this);
adapter = new ViewPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(adapter);
pagerSlidingTabStrip.setViewPager(viewPager);
shop_id = getIntent().getIntExtra(SHOP_ID, id);
shop_sub_id = getIntent().getIntExtra(SHOP_SUB_ID, subId);
shop_sub_sub_id = getIntent().getIntExtra(SHOP_SUB_SUB_ID, subSubId);
shop_detail_id = getIntent().getIntExtra(SHOP_DETAIL_ID, detailId);
}
}
My Adapter:
public class ViewPagerAdapter extends FragmentPagerAdapter {
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
Fragment fragment = null;
switch (position) {
case 0:
fragment = new InfoAdminFragment();
break;
case 1:
fragment = new ViewAdminFragment();
break;
default:
break;
}
return fragment;
}
#Override
public int getCount() {
return 2;
}
#Override
public CharSequence getPageTitle(int position) {
if (position == 0) {
return "InfoAdminFragment";
} else if (position == 1) {
return "ViewAdminFragment";
} else {
return super.getPageTitle(position);
}
}
}
As you can see in My Activity I have a lot of IDs using getIntent() and get them successfully, but I also need somehow to pass to my both fragments in ViewPager, how can I make solve this issue?
Pass the ID's as bundle to ViewPager adapter from your activity
adapter = new ViewPagerAdapter(getSupportFragmentManager(), getIntent().getExtras());
Modify your ViewPager adapter as below
public class ViewPagerAdapter extends FragmentPagerAdapter {
private Bundle bundle;
public ViewPagerAdapter(FragmentManager fm, Bundle bundle) {
super(fm);
this.bundle = bundle;
}
#Override
public Fragment getItem(int position) {
Fragment fragment = null;
switch (position) {
case 0:
fragment = new InfoAdminFragment();
break;
case 1:
fragment = new ViewAdminFragment();
break;
default:
fragment = new InfoAdminFragment();
break;
}
fragment.setArguments(bundle);
return fragment;
}
//other code
}
And retrieve the bundle in your fragments
Bundle bundle = getArguments();
shopId = bundle.getInt(ShoppingDetailsActivity.SHOP_ID);
Check your code with this one:
private int shop_id;
private int shop_sub_id;
private int shop_sub_sub_id;
private int shop_detail_id;
public void setExtraData(int shopId, int shopSubId, shopSubSubId, shopDetailId) {
this.shop_id = shopId;
this.shop_sub_id = shopSubId;
this.shop_sub_sub_id = shopSubSubId;
this.shop_detail_id = shopDetailId;
}
#Override
public Fragment getItem(int position) {
Fragment fragment = null;
switch (position) {
case 0:
fragment = new InfoAdminFragment();
break;
case 1:
fragment = new ViewAdminFragment();
break;
default:
break;
}
setBundleData(fragment);
return fragment;
}
public void setBundleData(Fragment fragment){
Bundle bundle = new Bundle();
bundle.putInt("shop_id", shop_id);
bundle.putInt("shop_sub_id", shop_sub_id);
bundle.putInt("shop_sub_sub_id", shop_sub_sub_id);
bundle.putInt("shop_detail_id", shop_detail_id);
fragment.setArguments(bundle);
}
And in your activity:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
activityComponent().inject(this);
setContentView(R.layout.activity_shopping_details);
ButterKnife.bind(this);
shop_id = getIntent().getIntExtra(SHOP_ID, id);
shop_sub_id = getIntent().getIntExtra(SHOP_SUB_ID, subId);
shop_sub_sub_id = getIntent().getIntExtra(SHOP_SUB_SUB_ID, subSubId);
shop_detail_id = getIntent().getIntExtra(SHOP_DETAIL_ID, detailId);
adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.setExtraData(shop_id, shop_sub_id, shop_sub_sub_id, shop_detail_id);
viewPager.setAdapter(adapter);
pagerSlidingTabStrip.setViewPager(viewPager);
}
In your fragment you can get:
getArguments().getInt(/*Key*/, /*Default value*/);
like:
getArguments().getInt("shop_id", -1);
You can achieve the same above scenario by passing intent rather than single-single values as I am doing here in setExtraData method of adapter.
My host activity has a viewpager with two fragments A and B.My activity code looks like this:
public class MainActivity extends AppCompatActivity implements
OnDataLoadedListener {
private ViewPager pager;
private MyPagerAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pager = (ViewPager) findViewById(R.id.pager);
adapter = new MyPagerAdapter(getSupportFragmentManager());
pager.setAdapter(adapter);
final int pageMargin = (int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, 4, getResources()
.getDisplayMetrics());
pager.setPageMargin(pageMargin);
tabLayout.setupWithViewPager(pager);
}
public class MyPagerAdapter extends FragmentPagerAdapter {
private final String[] TITLES = { "A",
"B" };
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 A.getInstance();
case 1:
return B.getInstance();
}
return null;
}
}
public Fragment findFragmentByPosition(int position) {
return getSupportFragmentManager().findFragmentByTag(
"android:switcher:" + pager.getId() + ":"
+ adapter.getItemId(position));
}
Now when activity start viewpager get populated with fragment properly and I try to access fragmentby using following code:
if (AFragment == null)
AFragment = (A) findFragmentByPosition(0);
if (BFragment == null)
BFragment = (B) findFragmentByPosition(1);
But AFragment and BFragment always contains null.I have read other simmilar question but it didn't help either.I need access to fragments as I want to call some methods defined in fragment from host activity.
Code to get an instance of fragment:
public static AFragment getInstance() {
AFragment fragment = new AFragment();
return fragment;
}
I'm think that the problem is that you need to move the method to the Adapter, because you need the original instance of the FragmentManager :
public class MyPagerAdapter extends FragmentPagerAdapter {
FragmentManager fm;
private final String[] TITLES = { "A",
"B" };
public MyPagerAdapter (FragmentManager fm) {
super(fm);
this.fm = 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 A.getInstance();
case 1:
return B.getInstance();
}
return null;
}
public Fragment findFragmentByPosition(int position, int pagerId) {
return fm.findFragmentByTag(
"android:switcher:" + pagerId + ":"
+ getItemId(position));
}
}
So now you can call:
adapter.findFragmentByPosition(position, pager.getId());
I have a ViewPager with 2 pages. The first page is a list which have different layouts depending on the type and orientation of the device. In case of portrait mode the list is a classic list and in landscape mode a grid should be shown.
For those two kind of layouts I created 2 different fragments: ResultListFragment and ResultGridFragment.
Here is my pager adapter:
public static class GSPagerAdapter extends FragmentStatePagerAdapter {
private Context mContext;
private FragmentManager mFragmentManager;
private AbstractResultFragment mResultFragment;
public GSPagerAdapter(FragmentManager fm, Context context) {
super(fm);
mContext = context;
mFragmentManager = fm;
}
#Override
public Fragment getItem(int i) {
Log.v("pager", "GSPagerAdapter.getItem(" + i + ")");
switch (i) {
case 0: {
// if the device is in portrait mode, use a list
if (mContext.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT ) {
Log.v("pager","return new list fragment");
mResultFragment = new ResultListFragment();
return mResultFragment;
// else use a grid
} else {
Log.v("pager","return new grid fragment");
mResultFragment = new ResultGridFragment();
return mResultFragment;
}
}
case 1: {
Log.v("pager", "return the new filter fragment");
return new FilterFragment();
}
default: {
Log.v("pager", "return null");
return null;
}
}
}
#Override
public CharSequence getPageTitle(int i) {
switch (i) {
case 0:
return "Result";
case 1:
return "Filter";
}
return "";
}
#Override
public int getCount() {
return 2;
}
#Override
public Object instantiateItem(ViewGroup container, int position) {
Log.v("pager","instantiateItem: "+position);
return super.instantiateItem(container, position);
}
#Override
public int getItemPosition(Object object){
Log.v("pager","getItemPosition: "+object);
return POSITION_NONE;
}
}
OnResume of the Activity:
public void onResume() {
super.onResume();
Log.v("lifecycle", "MainActivity.onResume()");
if(mViewPager != null)
mGSPagerAdapter.notifyDataSetChanged();
}
What do I do wrong? I have read several questions and answers but I cannot figure out what is the problem.