Updated AndroidX

app/build.gradle

@@ -162,15 +162,19 @@ configurations.all {
     exclude group: "androidx.room", module: "room-runtime"
     // Workaround https://issuetracker.google.com/issues/134685570
     exclude group: "androidx.lifecycle", module: "lifecycle-livedata"
+    exclude group: "androidx.lifecycle", module: "lifecycle-livedata-core"
+
+    // lifecycle-livedata: ComputableLiveData, MediatorLiveData, Transformations
+    // lifecycle-livedata-core: LiveData, MutableLiveData, Observer
 }
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
-    def core_version = "1.2.0-alpha04"
+    def core_version = "1.2.0-beta01"
     def appcompat_version = "1.1.0"
-    def fragment_version = "1.1.0"
-    def recyclerview_version = "1.1.0-beta04"
+    def fragment_version = "1.2.0-beta01"
+    def recyclerview_version = "1.1.0-beta05"
     def coordinatorlayout_version = "1.1.0-beta01"
     def constraintlayout_version = "2.0.0-beta2"
     def material_version = "1.1.0-alpha10"
@@ -178,13 +182,13 @@ dependencies {
     def lbm_version = "1.0.0"
     def swiperefresh_version = "1.0.0"
     def documentfile_version = "1.0.1"
-    def lifecycle_version = "2.1.0"
-    def room_version = "2.2.0-rc01"
+    def lifecycle_version = "2.2.0-beta01"
+    def room_version = "2.2.0"
     def paging_version = "2.1.0"
     def preference_version = "1.1.0"
     def work_version = "2.2.0"
-    def exif_version = "1.1.0-beta01"
-    def biometric_version = "1.0.0-beta02"
+    def exif_version = "1.1.0-rc01"
+    def biometric_version = "1.0.0-rc01"
     def billingclient_version = "2.0.3"
     def javamail_version = "1.6.4"
     def jsoup_version = "1.12.1"

app/src/main/java/androidx/lifecycle/ComputableLiveData.java

@@ -37,7 +37,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
  * @param <T> The type of the live data
  * @hide internal
  */
-@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP_PREFIX)
+@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
 public abstract class ComputableLiveData<T> {
     @SuppressWarnings("WeakerAccess") /* synthetic access */
     final Executor mExecutor;
@@ -152,8 +152,7 @@ public abstract class ComputableLiveData<T> {
         ArchTaskExecutor.getInstance().executeOnMainThread(mInvalidationRunnable);
     }
 
-    // TODO https://issuetracker.google.com/issues/112197238
-    @SuppressWarnings({"WeakerAccess", "UnknownNullness"})
+    @SuppressWarnings("WeakerAccess")
     @WorkerThread
     protected abstract T compute();
 }

app/src/main/java/androidx/lifecycle/LiveData.java

@@ -80,6 +80,7 @@ public abstract class LiveData<T> {
     @SuppressWarnings("FieldCanBeLocal")
     private boolean mDispatchInvalidated;
     private final Runnable mPostValueRunnable = new Runnable() {
+        @SuppressWarnings("unchecked")
         @Override
         public void run() {
             Object newValue;
@@ -87,7 +88,6 @@ public abstract class LiveData<T> {
                 newValue = mPendingData;
                 mPendingData = NOT_SET;
             }
-            //noinspection unchecked
             setValue((T) newValue);
         }
     };
@@ -110,6 +110,7 @@ public abstract class LiveData<T> {
         mVersion = START_VERSION;
     }
 
+    @SuppressWarnings("unchecked")
     private void considerNotify(ObserverWrapper observer) {
         if (!observer.mActive) {
             return;
@@ -127,7 +128,6 @@ public abstract class LiveData<T> {
             return;
         }
         observer.mLastVersion = mVersion;
-        //noinspection unchecked
         observer.mObserver.onChanged((T) mData);
     }
 
@@ -314,11 +314,11 @@ public abstract class LiveData<T> {
      *
      * @return the current value
      */
+    @SuppressWarnings("unchecked")
     @Nullable
     public T getValue() {
         Object data = mData;
         if (data != NOT_SET) {
-            //noinspection unchecked
             return (T) data;
         }
         return null;
@@ -386,7 +386,8 @@ public abstract class LiveData<T> {
         }
 
         @Override
-        public void onStateChanged(LifecycleOwner source, Lifecycle.Event event) {
+        public void onStateChanged(@NonNull LifecycleOwner source,
+                @NonNull Lifecycle.Event event) {
             if (mOwner.getLifecycle().getCurrentState() == DESTROYED) {
                 removeObserver(mObserver);
                 return;

app/src/main/java/androidx/lifecycle/Transformations.java

@@ -65,7 +65,6 @@ public class Transformations {
      * {@code mapFunction} to each value set.
      */
     @MainThread
-    @NonNull
     public static <X, Y> LiveData<Y> map(
             @NonNull LiveData<X> source,
             @NonNull final Function<X, Y> mapFunction) {
@@ -130,7 +129,6 @@ public class Transformations {
      * value set
      */
     @MainThread
-    @NonNull
     public static <X, Y> LiveData<Y> switchMap(
             @NonNull LiveData<X> source,
             @NonNull final Function<X, LiveData<Y>> switchMapFunction) {
@@ -160,35 +158,4 @@ public class Transformations {
         });
         return result;
     }
-
-    /**
-     * Creates a new {@link LiveData} object that does not emit a value until the source LiveData
-     * value has been changed.  The value is considered changed if {@code equals()} yields
-     * {@code false}.
-     *
-     * @param source the input {@link LiveData}
-     * @param <X>    the generic type parameter of {@code source}
-     * @return       a new {@link LiveData} of type {@code X}
-     */
-    @MainThread
-    @NonNull
-    public static <X> LiveData<X> distinctUntilChanged(@NonNull LiveData<X> source) {
-        final MediatorLiveData<X> outputLiveData = new MediatorLiveData<>();
-        outputLiveData.addSource(source, new Observer<X>() {
-
-            boolean mFirstTime = true;
-
-            @Override
-            public void onChanged(X currentValue) {
-                final X previousValue = outputLiveData.getValue();
-                if (mFirstTime
-                        || (previousValue == null && currentValue != null)
-                        || (previousValue != null && !previousValue.equals(currentValue))) {
-                    mFirstTime = false;
-                    outputLiveData.setValue(currentValue);
-                }
-            }
-        });
-        return outputLiveData;
-    }
 }