다음을 통해 공유

ITextWatcher.BeforeTextChanged(ICharSequence, Int32, Int32, Int32) Method

  • Reference

Definition

Namespace:
Android.Text
Assembly:
Mono.Android.dll

This method is called to notify you that, within s, the count characters beginning at start are about to be replaced by new text with length after.

[Android.Runtime.Register("beforeTextChanged", "(Ljava/lang/CharSequence;III)V", "GetBeforeTextChanged_Ljava_lang_CharSequence_IIIHandler:Android.Text.ITextWatcherInvoker, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null")]
public void BeforeTextChanged (Java.Lang.ICharSequence? s, int start, int count, int after);
[<Android.Runtime.Register("beforeTextChanged", "(Ljava/lang/CharSequence;III)V", "GetBeforeTextChanged_Ljava_lang_CharSequence_IIIHandler:Android.Text.ITextWatcherInvoker, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null")>]
abstract member BeforeTextChanged : Java.Lang.ICharSequence * int * int * int -> unit

Parameters

s
ICharSequence
start
Int32
count
Int32
after
Int32
Attributes
RegisterAttribute

Remarks

This method is called to notify you that, within s, the count characters beginning at start are about to be replaced by new text with length after. It is an error to attempt to make changes to s from this callback.

Java documentation for android.text.TextWatcher.beforeTextChanged(java.lang.CharSequence, int, int, int).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Applies to