diff --git a/api/current.txt b/api/current.txt
index 8c23fb77f43f8..cd5bad05b00c3 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -11744,7 +11744,7 @@ package android.content.pm {
     method public long getFirstInstallTime();
     method public android.graphics.drawable.Drawable getIcon(int);
     method public CharSequence getLabel();
-    method public float getLoadingProgress();
+    method @FloatRange(from=0.0, to=1.0) public float getLoadingProgress();
     method public String getName();
     method public android.os.UserHandle getUser();
   }
diff --git a/core/api/current.txt b/core/api/current.txt
index 8a139a6a9b4ed..d2a97f5ec1f81 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -11744,7 +11744,7 @@ package android.content.pm {
     method public long getFirstInstallTime();
     method public android.graphics.drawable.Drawable getIcon(int);
     method public CharSequence getLabel();
-    method public float getLoadingProgress();
+    method @FloatRange(from=0.0, to=1.0) public float getLoadingProgress();
     method public String getName();
     method public android.os.UserHandle getUser();
   }
diff --git a/core/java/android/content/pm/LauncherActivityInfo.java b/core/java/android/content/pm/LauncherActivityInfo.java
index 7c48bdfb87ea8..98fee18643995 100644
--- a/core/java/android/content/pm/LauncherActivityInfo.java
+++ b/core/java/android/content/pm/LauncherActivityInfo.java
@@ -16,6 +16,7 @@
 
 package android.content.pm;
 
+import android.annotation.FloatRange;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.pm.PackageManager.NameNotFoundException;
@@ -86,7 +87,7 @@ public class LauncherActivityInfo {
     /**
      * @return Package loading progress, range between [0, 1].
      */
-    public float getLoadingProgress() {
+    public @FloatRange(from = 0.0, to = 1.0) float getLoadingProgress() {
         return mInternal.getIncrementalStatesInfo().getProgress();
     }