Merge "Add message template support for checkStringNotEmpty"
diff --git a/core/java/com/android/internal/util/Preconditions.java b/core/java/com/android/internal/util/Preconditions.java
index 731b93c..3fff5c2 100644
--- a/core/java/com/android/internal/util/Preconditions.java
+++ b/core/java/com/android/internal/util/Preconditions.java
@@ -102,6 +102,24 @@
}
/**
+ * Ensures that an string reference passed as a parameter to the calling method is not empty.
+ *
+ * @param string an string reference
+ * @param messageTemplate a printf-style message template to use if the check fails; will be
+ * converted to a string using {@link String#format(String, Object...)}
+ * @param messageArgs arguments for {@code messageTemplate}
+ * @return the string reference that was validated
+ * @throws IllegalArgumentException if {@code string} is empty
+ */
+ public static @NonNull <T extends CharSequence> T checkStringNotEmpty(
+ final T string, final String messageTemplate, final Object... messageArgs) {
+ if (TextUtils.isEmpty(string)) {
+ throw new IllegalArgumentException(String.format(messageTemplate, messageArgs));
+ }
+ return string;
+ }
+
+ /**
* Ensures that an object reference passed as a parameter to the calling
* method is not null.
*