How to use isNullOrEmpty for Kotlin | isNullOrBlank

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IsNullOrEmpty | isNullOrBlank

We need to validate multiple times when developing Android applications. If you don't use Kotlin to deal with this problem, you may have found the TextUtils class in Android.

If (TextUtils.isEmpty (name)) {/ / alert the user!} public static boolean isEmpty (@ Nullable CharSequence str) {return str = = null | | str.length () = = 0;}

If the name is all spaces, then the TextUtils.isEmpty is not satisfied for use. Then isNullorBlank is available.

Public inline fun CharSequence?.isNullOrEmpty (): Boolean = this = = null | | this.length = = 0public inline fun CharSequence?.isNullOrBlank (): Boolean = this = = null | | this.isBlank () / / If we do not care about the possibility of only spaces...if (number.isNullOrEmpty ()) {/ / alert the user to fill in their number!} / / when we need to block the user from inputting only spacesif (name.isNullOrBlank ()) {/ / alert the user to fill in their name!} above is Kotlin How to use isNullOrEmpty | isNullOrBlank all the contents of this article Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!