Update README/CHANGELOG for release 4.0.0 (#182)

CHANGELOG.md

@@ -1,8 +1,12 @@
-### [Unreleased]
+### [4.0.0]
 - Not having an itemBinding in xml will cause the adapter to be cleared instead of throwing an
 exception (#179)
 - Added convenience constructors to `BindingListViewAdapter`, `BindingViewPagerAdapter`, and
 `BindingRecyclerViewAdapter` which takes the itemBinding.
+- Bumped android gradle plugin to 3.5.2
+- Allow itemBindings to be contravariant in adapters. This should not break any use-sites, but may
+be a source-breaking change if you have overriden `setItemBinding` or `getItemBinding` in your
+custom adapter. If so, you can change `T` to `? super T` (or `in T` in kotlin) to fix it.
 
 ### 3.2.0
 - Add viewpager2 support with bindingcollectionadapter-viewpager2

README.md

@@ -5,12 +5,12 @@ Easy way to bind collections to listviews and recyclerviews with the new [Androi
 
 ## Download
 
-If you are using androidx use version `3.2.0`, this also uses databinding v2
+If you are using androidx use version `4.0.0`, this also uses databinding v2
 
 ```groovy
-implementation 'me.tatarka.bindingcollectionadapter2:bindingcollectionadapter:3.2.0'
-implementation 'me.tatarka.bindingcollectionadapter2:bindingcollectionadapter-recyclerview:3.2.0'
-implementation 'me.tatarka.bindingcollectionadapter2:bindingcollectionadapter-viewpager2:3.2.0'
+implementation 'me.tatarka.bindingcollectionadapter2:bindingcollectionadapter:4.0.0'
+implementation 'me.tatarka.bindingcollectionadapter2:bindingcollectionadapter-recyclerview:4.0.0'
+implementation 'me.tatarka.bindingcollectionadapter2:bindingcollectionadapter-viewpager2:4.0.0'
 ```
 
 or use the previous stable version
@@ -91,6 +91,10 @@ name you passed into the `ItemBinding`.
 </layout>
 ```
 
+Note: if `app:itemBinding` is null, then the adapter will be set to null. This is useful if you
+don't have an `itemBinding` right away (ex: need to wait till you load data). If you aren't seeing
+any views, make sure you have `itemBinding` defined!
+
 ## Multiple View Types
 
 You can use multiple view types by using `OnItemBind` instead. You can still bind

build.gradle

@@ -8,7 +8,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:$agp_version"
+        classpath "com.android.tools.build:gradle:${agp_version}"
         classpath 'digital.wup:android-maven-publish:3.6.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }

gradle.properties

@@ -18,6 +18,6 @@
 # org.gradle.parallel=true
 
 group=me.tatarka.bindingcollectionadapter2
-version=4.0.0-SNAPSHOT
+version=4.0.0
 android.useAndroidX=true
 android.enableJetifier=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.2.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists