kotlin-android-extensions

We have existing Java Android code. We want to painlessly slowly start moving to Kotlin. We use Dagger 2, Butterknife and Realm. We use Java 8 compiler (but our targetCompatibility and sourceCompatibility are 1.7). I've been roaming the web for hours, seen SO, GitHub conversations and so on, and managed to solve all problems except one: The build is successful, but when trying to debug, we get: Error:Execution failed for task ':app:transformClassesWithJarMergingForDebug'. > com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: org/jetbrains

In my Android project I have two layouts: num_info and num_info_pack. Both have views with id "circle". So I thought referencing those views by layout_name.circle would solve the problem: val inetView = activity.layoutInflater.inflate(R.layout.num_info_pack, parent, false) inetView.circle.setBackgroundResource(background) But circle is underlined with red and it says: Overload resolution ambiguity. All these functions match. public val View.circle: View! defined in kotlinx.android.synthetic.main.num_info_pack.view public val View.circle: RelativeLayout! defined in kotlinx.android.synthetic

We have a project on IDEA that consists of a couple med sized Java packages and one very small Kotlin package (5 files). I noticed performance is fine with any Java packages, but it's 10x slower in autocompletion, code analysis and compilation for the very small Kotlin package. Autocompletion occasionally was so slow to a point where the popover couldn't load all the methods and it had to load a couple API incrementally. Every time our developer types a word and wait for autocomplete, it takes about 2-5 seconds for the expected autocomplete to show up. Sometimes autocomplete was too slow to

For the makeSceneTransitionAnimation there are two static functions public static ActivityOptionsCompat makeSceneTransitionAnimation(Activity activity, View sharedElement, String sharedElementName) and public static ActivityOptionsCompat makeSceneTransitionAnimation(Activity activity, Pair<View, String>... sharedElements) The first function call works properly in Kotlin but when calling the second one, both these calls return errors val imageTransition = Pair<View, String>(imageView, imageView.getTransitionName()); val textTransition = Pair<View, String>(textView, textView.getTransitionName())

I have my buyer , seller module and a common module. Few layouts which are used in both buyer and seller module are placed in common module. common -> layout_toolbar.xml buyer -> activity_sell.xml -> <LinearLayout> <include layout="@layout/layout_toolbar" /> <!-- layout_toolbar.xml is from common module --> </LinearLayout> seller -> activity_buy.xml -> <RelativeLayout> <include layout="@layout/layout_toolbar" /> <!-- layout_toolbar.xml is from common module --> </RelativeLayout> buyer -> BuyActivity.kt toolbar.title = "Buy" seller -> SellActivity.kt toolbar.title = "Sell" Everything works fine

Let's say I have this layout: <?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" android:orientation="vertical"> <ImageButton android:id="@+id/add_dep_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentEnd="true" android:layout_alignParentRight="true" android:layout_marginEnd="5dp" android:layout_marginRight="5dp" android:src="@android:drawable/ic_input_add" /> <EditText android:id="@+id/add_dep_text"

Is there any fancy way to implement debounce logic with Kotlin Android? I'm not using Rx in project. There is a way in Java , but it is too big as for me here. You can use kotlin coroutines to achieve that. Here is an example . Be aware that coroutines are experimental at kotlin 1.1+ and it may be changed in upcoming kotlin versions. UPDATE Since Kotlin 1.3 release, coroutines are now stable. Thanks to https://medium.com/@pro100svitlo/edittext-debounce-with-kotlin-coroutines-fd134d54f4e9 and https://stackoverflow.com/a/50007453/2914140 I wrote this code: private var textChangedJob: Job? = null