I have one activity and two tabs in that activity Tab1 and Tab2. These are the two fragments. In my Tab1 have an EditText field and a Button field and Tab2 have only one TextView Field.I want to get the value in EditText field in the Tab1 in to TextView field in Tab2 when I click the button in the Tab1 and also get value when swipe Tab1 to Tab2. I also check many websites but did't get any solution. If anyone know it please help me.
MainActivity.java
package reubro.com.fragment;
import android.support.design.widget.TabLayout;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.widget.EditText;
public class MainActivity extends AppCompatActivity implements TabLayout.OnTabSelectedListener {
TabLayout tabLayout;
ViewPager viewPager;
Tab1 t2;
EditText ed1;
Tab1 t1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
t1 = new Tab1();
ed1 = (EditText) findViewById(R.id.ed1);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
tabLayout = (TabLayout) findViewById(R.id.tab);
viewPager = (ViewPager) findViewById(R.id.pager);
tabLayout.addTab(tabLayout.newTab().setText("Tab1"));
tabLayout.addTab(tabLayout.newTab().setText("Tab2"));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
Pager pager = new Pager(getSupportFragmentManager(),tabLayout.getTabCount());
viewPager.setAdapter(pager);
tabLayout.setOnTabSelectedListener(this);
}
public void onTabSelected(TabLayout.Tab tab){
viewPager.setCurrentItem(tab.getPosition());
// ed1.setText(t1.ed.getText());
// Log.d("cccccc",ed1.getText().toString());
}
public void onTabUnselected(TabLayout.Tab tab) {
}
public void onTabReselected(TabLayout.Tab tab) {
}
}
Tab1.java
package reubro.com.fragment;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
/**
* Created by pc84 on 20/1/17.
*/
public class Tab1 extends Fragment {
Button b1;
EditText ed;
String val;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup viewGroup, final Bundle bundle){
View view = inflater.inflate(R.layout.tab1,viewGroup,false);
b1 = (Button) view.findViewById(R.id.btn1);
ed = (EditText) view.findViewById(R.id.ed1);
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
val = ed.getText().toString().trim();
if(!(val.isEmpty())){
Log.d("inner",val);
Tab2 tab2 = new Tab2();
Bundle bundle = new Bundle();
bundle.putString("val",val);
tab2.setArguments(bundle);
Toast.makeText(getActivity(),"This is value: "+val,Toast.LENGTH_LONG).show();
}
}
});
return view;
}
}
Tab2.java
package reubro.com.fragment;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
/**
* Created by pc84 on 20/1/17.
*/
public class Tab2 extends Fragment {
TextView tv;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup viewGroup, Bundle bundle){
View view = inflater.inflate(R.layout.tab2,viewGroup,false);
tv = (TextView) view.findViewById(R.id.tv1);
Bundle bundle1 = this.getArguments();
if (bundle1 != null){
String val = bundle1.getString("val");
tv.setText(val);
Log.d("tttttt",val);
}
return view;
}
}
Pager.java
package reubro.com.fragment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
/**
* Created by pc84 on 20/1/17.
*/
public class Pager extends FragmentStatePagerAdapter {
int tabCount;
public Pager(FragmentManager fm, int tabCount) {
super(fm);
this.tabCount = tabCount;
}
#Override
public Fragment getItem(int position) {
switch (position){
case 0:
Tab1 tab1 = new Tab1();
return tab1;
case 1:
Tab2 tab2 = new Tab2();
return tab2;
default:
return null;
}
}
#Override
public int getCount() {
return tabCount;
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"/>
<android.support.design.widget.TabLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:id="#+id/tab"
/>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
tab1.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/ed1"
android:hint="Enter something"
android:layout_margin="20dp"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:id="#+id/btn1"
android:layout_below="#+id/ed1"
android:text="Send to Next Fragment"
android:textAllCaps="false"/>
</RelativeLayout>
tab2.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Tab2"
android:gravity="center"/>
</RelativeLayout>
You can place your data into a Singleton referenced both into Tab1 and Tab2.
A Singleton is a programming pattern that let you to use always the same and the only one instance of a class.
This is an example:
public class ClassicSingleton {
private static ClassicSingleton instance = null;
protected ClassicSingleton() {
// Exists only to defeat instantiation.
}
public static ClassicSingleton getInstance() {
if(instance == null) {
instance = new ClassicSingleton();
}
return instance;
}
}
Take a look here to have a more detailed description:
Use ViewModel as a parent data sharing in the parent activity so you can use the same context as viewLifeCycleOwner so you can easily handle the data view and data
To pass data from one tab to another, you can either send a broadcast or if you don't want to broadcast then first pass it to activity through callback then from activity to tab2.
You try to use BroadcastReceiver.
In Tab1 : you send broadcast with data
In Tab2 : you get data from broadcast and set page index
You Can use Live Data object with View Model You can Implement it easily with new Android Architecture.
Doc : https://developer.android.com/topic/libraries/architecture/livedata
No need to EventBus Anymore and Interface for getting LiveData.
I've encountered a similar scenario and came up with the following:
Have the MainActivityViewModel hold any data you may need, and set
it accordingly when the event you are interested in is triggered.
You can then trigger the navigation to the destination tab
programmatically(even if you are using the multiple-stack workaround
used here
https://github.com/googlesamples/android-architecture-components/tree/master/NavigationAdvancedSample),
and have it get any information it may need from the
MainActivityViewModel.
As soon as the information is read, set it to null so it won't be
used again by mistake. You should also have a default behavior, for
when the tab comes up for other reasons, and that variable is null.
Honestly, I'm not sure if by doing this I've gone against some best practices or something, but it has proven useful, and doesn't feel too "hacky".
if your willing to wait until the tab is resumed:
it can be done like this: in your main activity navigation host have a function like this:
fun moveToTabPosition(tabPosition: Int, bundle: Bundle?) {
myFragment?.arguments?.let { it.putAll(bundle) } ?: run { myfragment?.arguments = bundle }
binding.tablayout.setSelectedTab(tabPosition)
binding.yourViewPager.currentItem = tabPosition
}
then just call that with your new bundle updates.
important: in onResume of each tab fragment have a function called updateBundle() and parse the arguments you want again.
the key here is the the arguments have a method called putAll
UPDATE: I want to avoid putAll now ...i notice after Android N it cannot allow to add values to the arguments after the fragment is attached. During QA testing it passed but some users had this issue so had to remove this call.
i got an error on some devices of: java.lang.UnsupportedOperationException : ArrayMap is immutable
Now im in favor of a common interface to call to update the set the arguments data. it would take a bundle as param.
Related
Inside a viewpager fragment is having a network call to load the data. Due to this network call it creates a lag for users. How can i handle network call inside a fragment which reside inside a viewpager. I just dont want my users to see the lag as it takes 4-7 seconds to load a fragment. what is efficent way to load a fragment via network call for Viewpager
below is code for Activity:
import androidx.appcompat.app.AppCompatActivity;
import androidx.viewpager.widget.ViewPager;
import android.os.Bundle;
import com.test.androidtest20202.R;
import com.test.androidtest20202.adapter.ViewPagerAdapter;
import java.util.ArrayList;
import java.util.List;
public class ViewPagerActivity extends AppCompatActivity {
ViewPagerAdapter adapter;
ViewPager viewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_pager);
viewPager = findViewById(R.id.viewpager);
ArrayList<Integer> task_ids = new ArrayList<>();
for(int i=0;i<5;i++){
task_ids.add(i);
}
adapter = new ViewPagerAdapter(this, getSupportFragmentManager(),task_ids);
viewPager.setAdapter(adapter);
}
}
Below activity xml layout:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activity.ViewPagerActivity">
<androidx.viewpager.widget.ViewPager
android:id="#+id/viewpager"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#color/white"
android:largeHeap="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Below is my Viewpager Adapter :
import android.content.Context;
import android.os.Bundle;
import android.util.SparseArray;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentStatePagerAdapter;
import com.test.androidtest20202.fragments.ViewPagerFragment;
import java.util.ArrayList;
public class ViewPagerAdapter extends FragmentStatePagerAdapter {
private ArrayList<Integer> taskid;
private SparseArray<Fragment> registeredFragments = new SparseArray<>();
public ViewPagerAdapter(Context context, #NonNull FragmentManager fm, ArrayList<Integer> taskid) {
super(fm);
this.taskid = taskid;
}
#NonNull
#Override
public Fragment getItem(int position) {
Fragment fragment = null;
Bundle bundle = new Bundle();
bundle.putInt("COMPLETED_TASKID", taskid.get(position));
fragment = new ViewPagerFragment();
registeredFragments.put(position, fragment);
fragment.setArguments(bundle);
return fragment;
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
registeredFragments.remove(position);
super.destroyItem(container, position, object);
}
#Override
public int getCount() {
return taskid.size();
}
}
Below is my Viewpager Fragment code:
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import com.test.androidtest20202.R;
import com.test.androidtest20202.pojo.SaleskenResponse;
import com.test.androidtest20202.util.RestApiClient;
import com.test.androidtest20202.util.RestUrlInterface;
import butterknife.BindView;
import butterknife.ButterKnife;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
public class ViewPagerFragment extends Fragment {
private static final String TAG = "ViewPagerFragment";
private ViewGroup container;
private LayoutInflater inflater;
#BindView(R.id.textView2)
TextView textView;
private AsyncTask mAsyncTask;
public RestUrlInterface restUrlInterface;
Integer taskid = -1;
public View onCreateView(LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
this.container = container;
this.inflater = inflater;
return initializeView();
}
private View initializeView() {
final View view;
view = inflater.inflate(
R.layout.fragment_laout, container, false);
ButterKnife.bind(this, view);
restUrlInterface = RestApiClient.getClient(getContext()).create(RestUrlInterface.class);
if (getArguments() != null) {
taskid = getArguments().getInt("COMPLETED_TASKID");
}
return view;
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
Call<SaleskenResponse> task_details = restUrlInterface.getTaskDetail(getString(R.string.token), taskid );
task_details.enqueue(new Callback<SaleskenResponse>() {
#Override
public void onResponse(Call<SaleskenResponse> call, Response<SaleskenResponse> response) {
switch (response.code()) {
case 200:
textView.setText( response.body().toString());
}
}
#Override
public void onFailure(Call<SaleskenResponse> call, Throwable t) {
}
});
}
}
Below is Fragment layout:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
So as the data only need to be loaded once I would do this in the activity onCreate just after you have created your task_ids ArrayList.
You seem to be using a custom RestAPI package, but most package do Network request asynchronously, so when you get a response for each request you would then store them in a shared viewmodel using the unique task_id's as an index.
The shared viewmodel can then be observed from the fragment and when the data is available the fragment will be notified to use it.
So basically start the Network load as soon as the Activity starts, to give it a head start before the viewpager is setup and the first Fragment is loaded, and storing your data independently of the Activity and Fragments.
Note this won't guarantee that the first fragment in the viewpager will have it's data available by the time it is shown but at least it should be part way to having it available and by the time the user swaps to the second page in the viewpager that data should already be available.
How to share data between Fragments with a shared viewmodel example is at https://blog.mindorks.com/shared-viewmodel-in-android-shared-between-fragments (this example is between 2 fragments but the same concept can be used for comms between the background RestAPI calls in the Activity and each Fragment in the viewpager.
There might be a trade off on first page load time between requesting the data for all task_id's in parallel vs doing them sequentially start with the first page and then once that has loaded request the next one, etc.
Sorry no code example (other than in the link on how to use shared viewmodel) but is more of an architectural answer as you seem to be using a custom RestAPI package I'm not familiar with.
This is basically caching the data for each fragment as soon as the activity starts and the Fragments just display the cached data.
If you can cache between each time the Activity is started you could instead of the shared viewmodel use a Database like Android Rooms, then when it Activity is started it has the data from last time the Activity was started and really it could in the background just check the freshness of the data stored in the database with a RestAPI request.
I've implemented an infinite ViewPager in situ https://github.com/JoachimR/AnyDayViewPager. However, instead of using a PagerTabStrip, I'd prefer to use a CoordinatorLayout with TabLayout. But when setting up the TabLayout with the viewpager, (I'm assuming because there are an "infinite number of ViewPager Fragments") the app gets stuck.
How can I solve this issue?
Here's the code
(the other files which I have not changed can be found at JoachimR/AnyDayViewPager, e.g., FragmentContent.java, CachingFragmentStatePagerAdapter.java, TimeUtils.java, etc)
MainActivity.java
import android.content.Context;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.view.ViewPager;
import android.support.design.widget.TabLayout;
import android.os.Bundle;
import java.util.Calendar;
public class MainActivity extends FragmentActivity {
private static Context mContext;
private CachingFragmentStatePagerAdapter adapterViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = this;
ViewPager vpPager = (ViewPager) findViewById(R.id.vpPager);
adapterViewPager = new MyPagerAdapter(getSupportFragmentManager());
vpPager.setAdapter(adapterViewPager);
// set pager to current date
vpPager.setCurrentItem(TimeUtils.getPositionForDay(Calendar.getInstance()));
/** THIS IS WHERE THE ISSUES ARISE **/
TabLayout tabLayoutDiary = (TabLayout) findViewById(R.id.diary_tabs);
tabLayoutDiary.setupWithViewPager(vpPager);
}
public static class MyPagerAdapter extends CachingFragmentStatePagerAdapter {
private Calendar cal;
public MyPagerAdapter(FragmentManager fragmentManager) {
super(fragmentManager);
}
#Override
public int getCount() {
return TimeUtils.DAYS_OF_TIME;
}
#Override
public Fragment getItem(int position) {
long timeForPosition = TimeUtils.getDayForPosition(position).getTimeInMillis();
return FragmentContent.newInstance(timeForPosition);
}
#Override
public CharSequence getPageTitle(int position) {
Calendar cal = TimeUtils.getDayForPosition(position);
return TimeUtils.getFormattedDate(mContext, cal.getTimeInMillis());
}
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:fab="http://schemas.android.com/tools">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.TabLayout
android:id="#+id/diary_tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="scrollable"/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/vpPager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</android.support.design.widget.CoordinatorLayout>
Possibly due to this bug: https://code.google.com/p/android/issues/detail?id=180027
TabLayout creates a TextView tab for each page in your ViewPager, rather than dynamically creating and recycling the TextViews. As you're seeing, this will just blow up if you try to fake out an infinite ViewPager.
Unfortunately, there's no fix for now. You can try using https://github.com/nshmura/RecyclerTabLayout which was linked on the bug, but I've not used it myself.
I want to create an Activity with tabs (probably using TabHost) that looks something like this:
This layout also has some buttons, checkboxes and a gridview, but I'm mostly interested to find out how I would have my tabs look like this, because by default they look something like this:
My problem is that I have no clue how to do it, I have made drawables for some UI components before, but this is something different, I think.
After quite some time I have figured how to get what I wanted, by trying out a lot of different ways to make tabs an I finally ended up using a TabLayout with a ViewPager.
I have made a Proof of Concept and it looks like this:
If anyone is interested in the code, this is the layout of the main activity
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="10">
<View
android:layout_width="0dp"
android:layout_height="1dp"
android:layout_weight="0.2"/>
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="4"
app:tabMode="fixed"
app:tabGravity="fill"
app:tabPaddingStart="2dp"
app:tabPaddingEnd="2dp"
app:tabPaddingTop="2dp"/>
<Button
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="5.8"/>
</LinearLayout>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
The MainActivity.java:
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity implements FirstTabFragment.OnFragmentInteractionListener, SecondTabFragment.OnFragmentInteractionListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
tabLayout.setSelectedTabIndicatorColor(Color.TRANSPARENT);
viewPager.setAdapter(new SectionPagerAdapter(getSupportFragmentManager()));
tabLayout.setupWithViewPager(viewPager);
TabLayout.Tab tab = tabLayout.getTabAt(0);
RelativeLayout relativeLayout = (RelativeLayout) LayoutInflater.from(this).inflate(R.layout.tab_layout_file1, tabLayout, false);
TextView tabTextView = (TextView) relativeLayout.findViewById(R.id.tab_title);
tabTextView.setText(tab.getText());
tab.setCustomView(relativeLayout);
TabLayout.Tab tab2 = tabLayout.getTabAt(1);
RelativeLayout relativeLayout2 = (RelativeLayout) LayoutInflater.from(this).inflate(R.layout.tab_layout_file2, tabLayout, false);
TextView tabTextView2 = (TextView) relativeLayout2.findViewById(R.id.tab_title);
tabTextView2.setText(tab2.getText());
tab2.setCustomView(relativeLayout2);
tab.select();
}
#Override
public void onFragmentInteraction(Uri uri) {
}
public class SectionPagerAdapter extends FragmentPagerAdapter {
public SectionPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new FirstTabFragment();
case 1:
default:
return new SecondTabFragment();
}
}
#Override
public int getCount() {
return 2;
}
#Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "First Tab";
case 1:
default:
return "Second Tab";
}
}
}
}
TabLayout1 (TabLayout2 is the same but uses shape2)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/tab_title"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:background="#drawable/shape1"
android:textColor="#android:color/white"/>
</RelativeLayout>
The shapes are just a red and a blue rectangle and and the Fragments are default
empty Fragments with the same color background as the shapes.
I'm trying to add a Fragment to my FrameLayout, it seems that it is added correctly, but then i can't see the text of the TextView.
Fragment Layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/text1"
android:text="Hello"
android:background="#34f5d6"/>
</LinearLayout>
The FragmentClass:
import android.app.Fragment;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.text.method.CharacterPickerDialog;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
public class TimerClass extends Fragment {
public static Fragment newInstance(Context context) {
TimerClass fragment = new TimerClass();
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstance){
ViewGroup root=(ViewGroup)inflater.inflate(R.layout.mylayout,container,false);
return root;
}
}
And the code i use to add the fragment to the FrameLayout
FragmentTransaction tx= getFragmentManager().beginTransaction();
Fragment fragment= TimerClass.newInstance(getApplicationContext());
tx.replace(R.id.fl, fragment);
tx.commit();
I don't undestand why it doesn't show the text, I tryed to change the color of the text but it doesn't work.
If I change the background of the TextView, it works; also if I add an OnClockListener on the TextView, it works. Only it doesn't show the text.
Can you help me?
EDIT:
I found the solution: the problem was with the FrameLayout; it's top part was covered by the action bar.
By fixing the layout of the FrameLayout the problem disappeared.
First simply change this
ViewGroup root=(ViewGroup)inflater.inflate(R.layout.mylayout,container,false);
return root;
to
View root = inflater.inflate(R.layout.mylayout,container,false);
return root;
Also this one
public static Fragment newInstance(Context context) {
TimerClass fragment = new TimerClass();
return fragment;
}
to
public static TimerClass getInstance() {
TimerClass fragment = new TimerClass();
return fragment;
}
I think issue is only with height and width of your TextView because you have sated them as match_parent
so try to replace
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/text1"
android:text="Hello"
android:background="#34f5d6"/>
with
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/text1"
android:text="Hello"
android:background="#34f5d6"/>
I am a newbie in Android, how can I do something like that.
I extend TabActivity when to create Tabs like this but without that header.
If you want to implement the view you post here ,you can code the view by yourself:
the header is in the top ,and below the header ,a TabHost is needed ,below the TabHost,you put a viewpager contains two fragments to display your data,you can control your viewpager with method setCurrentItem when you click tabs.
Try this code
MainActivity
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBarActivity;
import com.viewpagerindicator.CirclePageIndicator;
public class LauncherActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_launcher);
pager.setAdapter(new GuidePagerAdapter(getSupportFragmentManager()));
indicator.setViewPager(pager);
}
}
ativity_main
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background"
android:orientation="vertical"
>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#80000000"
android:orientation="vertical" >
<com.viewpagerindicator.CirclePageIndicator
android:id="#+id/indicator"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="30dp" />
</LinearLayout>
</LinearLayout>
Adapter
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
public class GuidePagerAdapter extends FragmentStatePagerAdapter {
public GuidePagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int pos) {
if (pos == 0)
return new Fragment1();
else
return new Fragment2();
}
#Override
public int getCount() {
return 2;
}
}
You can add two tabs on main_activity and on click of tab change the fragment in adapter.