Styjun

I have a working dataBinding for the functions being called from XML (ie."@user.mUCL"). But When i use notifyPropertyChanged(BR.mUCL) in any method or anywhere New values dont get updated, I have provided a sample issue below, where for-loop updated Text1 with values, but other Text2 fails to update with the same values "not-worked".

JavaFragment

 public class FragmentTwo extends Fragment 

 Update_observable updateObservable;
 TextView fragment_quote_open_val;

 public FragmentTwo() 
 // Required empty public constructor
 

 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container,
 Bundle savedInstanceState) 
 // Inflate the layout for this fragment

 Fragment2Binding fragmentTwoBinding = DataBindingUtil.inflate(inflater,R.layout.fragment2,null,false);
 View view = fragmentTwoBinding.getRoot();
 updateObservable = new Update_observable();
 fragmentTwoBinding.setUser(updateObservable);

 fragment_quote_open_val=(TextView)view.findViewById(R.id.fragment_quote_open_val);

 bindingLoop();

 return view;
 

 @BindingAdapter("mUCL")
 public static void runMe(TextView view, String message) 
 if (message != null)
 view.setText(message);
 


 public void bindingLoop()

 final int[] k = 0;

 final Update_observable ss=new Update_observable();

 final Handler handler = new Handler();
 final int delay = 3000; //milliseconds

 handler.postDelayed(new Runnable()
 public void run()
 //do something
 k[0]++;
 fragment_quote_open_val.setText(String.valueOf(k[0]));
 ss.setmUCL(String.valueOf(k[0]));

 handler.postDelayed(this, delay);
 
 , delay);
 

BaseObservable

 public class Update_observable extends BaseObservable 

 public String mUCL= "not-worked";

 @Bindable
 public String getmUCL() 
 return this.mUCL;
 

 public void setmUCL(String mUCL) 
 this.mUCL = mUCL;
 notifyPropertyChanged(BR.mUCL);
 

XML

<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:bind="http://schemas.android.com/apk/res-auto">

<data>

 <variable
 name="user"
 type="com.journaldev.androidmvvmbasics.fragments.Update_observable"/>

</data>


<LinearLayout
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="#00ff04"
 android:orientation="vertical"
 android:gravity="center"
 tools:context="com.journaldev.androidmvvmbasics.fragments.FragmentTwo">

 <!-- TODO: Update blank fragment layout -->
 <TextView
 android:id="@+id/fragment_quote_open_val"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_margin="20dp"
 android:textColor="#000000"
 android:textSize="16dp" />
 <TextView
 android:id="@+id/fragment_quote_ucl_val"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="@user.mUCL"
 android:layout_margin="20dp"
 bind:mUCL="@user.mUCL"
 android:textColor="#000000"
 android:textSize="16dp" />
</LinearLayout>

</layout>

kindly make sure you do DataBindingUtil.inflate in Base class.

Fragment1Binding fragmentOneBinding = DataBindingUtil.inflate(inflater,R.layout.fragment1,null,false);
 View view = fragmentOneBinding.getRoot();
 fragmentOneBinding.setUsermodel(new UserModel("XXXX","XXXX"));

or

 ActivityMainBinding activityMainBinding = DataBindingUtil.setContentView(this, 
 R.layout.activity_main);
 activityMainBinding.setUser(new User());
 activityMainBinding.executePendingBindings();

then in BaseObservable class do

@Bindable
 public String mEmail= "....";

rebuild project, just to make sure @Bindable is done for sure

now call, as per your requirement.

 notifyPropertyChanged(BR.xxx);

I managed to find an answer for this, As DataBinding cannot be done programmatically.

public class Update_observable extends BaseObservable {

public String mUCL= "worked";

public Update_observable(String mUCL)
 this.mUCL=mUCL;

Fragment

 public void bindingLoop()

 final int[] k = 0;


 final Handler handler = new Handler();
 final int delay = 3000; //milliseconds

 handler.postDelayed(new Runnable()
 public void run()
 //do something
 k[0]++;
 fragment_quote_open_val.setText(String.valueOf(k[0]));
 updateObservable = new Update_observable(String.valueOf(k[0]));
 fragmentTwoBinding.setUser(updateObservable);
 handler.postDelayed(this, delay);
 
 , delay);