data binding – Android: Databinding expression with enum comparison-ThrowExceptions

Exception or error: is it possible to create a databinding expression and control the visibility of a view element by using enumerations? What I want to achieve is the following <LinearLayout android:layout_width=”match_parent” android:layout_height=”wrap_content” android:orientation=”vertical” android:visibility=”@{user.editType == EditType.EDIT_PROFIL ? View.VISIBLE : View.GONE}”> The EditType class is very simple public enum EditType { NONE, EDIT_PROFIL, EDIT_ADDRESSES; } …

android – Navigation Architecture Component – Action Navigation with lambda expression-ThrowExceptions

Exception or error: I have added a new action Navigation.xml: <fragment android:id=”@+id/launcher_home” android:name=”com.example.android.codelabs.navigation.MainFragment” android:label=”@string/home” tools:layout=”@layout/main_fragment”> <action android:id=”@+id/go_to_step_one” app:destination=”@id/flow_step_one” /> </fragment> When calling the navigation action, if i use, the navigation works correctly : view.findViewById<Button>(R.id.navigate_action_bt)?.setOnClickListener( Navigation.createNavigateOnClickListener(R.id.go_to_step_one, null) ) But when calling it with a lambda, it does not work : view.findViewById<Button>(R.id.navigate_action_bt)?.setOnClickListener { Navigation.createNavigateOnClickListener(R.id.go_to_step_one, null) } How …

java – what causes "constant expression required" errors for the generated R.id.xxx values in switch statements?-ThrowExceptions

Exception or error: We’ve got a multi-project app that we’re moving to gradle. The build results in Java compilation errors like: AFragment.java:159: constant expression required case R.id.aBtn: We’ve confirmed that the constants reported in errors are in the generated R.java. One clue is that errors are only for switch values. For example there’s no error …

java – android studio : lambda expressions are not supported in -source 1.7 (use -source 8 or higher to enable lambda expressions)-ThrowExceptions

Exception or error: This question already has answers here: Is it possible to use Java 8 for Android development? (25 answers) Closed 4 years ago. Happy to know that java introduced Lambda expressions in java version 8. I was working in android studio. And I noticed that DialogInterface.OnClickListener() was showing underline and became grey colored …

android – Use Retrofit methods more expressive way-ThrowExceptions

Exception or error: I want to make void enqueue(Callback<T> callback); method invocation code block more expressive, Here is what I have an usually request.enqueue(object : Callback<MyModel> { override fun onFailure(call: Call<MyModel>?, t: Throwable?) { // } override fun onResponse(call: Call<MyModel>?, response: Response<MyModel>?) { // } }) And what I want and mean is that, to …