android EditText maxLength allows user to type more

android EditText maxLength allows user to type more

I've already set the maxLength attribute for an EditText widget in the xml layout file, and it does limit the display of characters.

But it still allows the user to press more letters on the keyboard, and backspacing deletes these extra presses rather than the last letter on the display.

I believe this is not how it's supposed to be. Pressing keys after the limit has been reached should stop accepting more input even if it is not displayed.

Any fix on this?

Update

Based on the answer below, for multiline EditText, add the textMultiLine attribute too.

android:inputType="textFilter|textMultiLine"

  1. Disable auto-suggestions(android:inputType="textFilter" or textNoSuggestions):
  2. Set maxLength

    <EditText
       android:id="@+id/editText"
       android:inputType="textFilter"
       android:maxLength="8"
       android:layout_width="match_parent"
       android:layout_height="wrap_content" />
    

I hope, it helps

Limit text length of EditText in Android, Limit text length of EditText in Android You can use android:maxLength="10" in the edittext. 2, If input more, give a callback to trigger your toast. This is a custom EditText Class that allow Length filter to live along with other filters. Thanks  EditText max length represents here maximum length of edittext input in characters format. For example app developer can set restrictions to app user so application user cannot enable to enter more then specify characters limit. So here is the complete step by step tutorial for Set maxlength for edittext in android programmatically.


Unfortunately the following answer does not work. However, it helped us to find out that the bug mentioned by Poly Bug is not reproducible if the input begins with a number.


You can use a TextWatcher to listen for EditText changes and prevent the user from typing too many characters into the field. The following code works for me:

final int maxLength = 10;
EditText editText = (EditText) findViewById(R.id.my_edittext_id);
editText.addTextChangedListener(new TextWatcher() {
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {}

    @Override
    public void afterTextChanged(Editable s) {
        if (s.length() >= maxLength) s.delete(maxLength, s.length());
    }
});

In afterTextChanged, the code compares the length of the inserted text with the maximal length maxLength and deletes all superfluous characters.


You might replace all standard EditText classes with the following class to use the listener in conjunction with the maxLength XML attribute:

public class MyMaxLengthEditText extends EditText {
    public static final String XML_NAMESPACE_ANDROID = "http://schemas.android.com/apk/res/android";
    private final int mMaxLength;

    public MyMaxLengthEditText(Context context) {
        super(context, null);
        mMaxLength = -1;
    }

    public MyMaxLengthEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        mMaxLength = attrs.getAttributeIntValue(XML_NAMESPACE_ANDROID, "maxLength", -1);
        addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {}

            @Override
            public void afterTextChanged(Editable s) {
                if (s.length() >= mMaxLength) s.delete(mMaxLength, s.length());
            }
        });
    }
}

EditText maxLines not working, <EditText android:id="@+id/editText2" android:layout_height="wrap_content" User can input more than 5 lines, by pressing enter/next row key. simply use maxLength property of EditText as it will not allow user to enter more characters. This example demonstrate about How to limit text length of EditText in Android. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main.xml.


You can use InputFilter

InputFilters can be attached to Editables to constrain the changes that can be made to them.

Xml

    <EditText
   android:id="@+id/edit_Text"
   android:layout_width="match_parent"
   android:layout_height="wrap_content" />

Java Class

int maxLengthofYourEditText = 5;    // Set Your Limit 
edit_TextObj.setFilters(new InputFilter[] {new InputFilter.LengthFilter(maxLengthofYourEditText)});

Limit text length of EditText in Android, What's the best way to limit the text length of an EditText in Android? use an input filter to limit the max length of a text view. LengthFilter(MAX_LENGTH)}); //​Allowing only upper case characters editText. to define a fixed length to an EditText which you won't change further in the future just define in your EditText XML: If you want to see a counter label you can use app:counterEnabled and android:maxLength, like: <android.support.design.widget.TextInputLayout android:layout_width


I also bumped into this situation when had a series of fields containing 1 symbol (a usual pin-code).

My solution is based on @jmeinke answer.

Create a layout containing several EditTexts with android:maxLength="2" (we will enter 1 symbol in any of them and jump to another EditText. Strange, but on some phones the code below works even for maxLength=1).

class YourTextWatcher(
    private val prevEdit: EditText?,
    private val currEdit: EditText,
    private val nextEdit: EditText?,
    private val method: () -> Unit
) : TextWatcher {
    override fun afterTextChanged(s: Editable?) {
        if (s.isNullOrEmpty()) {
            prevEdit?.requestFocus()
        } else {
            if (s.length > 1) {
                if (currEdit.selectionEnd > 1) {
                    // If stand on second position of EditText and enter new symbol, 
                    // will move to next EditText copying second symbol.
                    val secondSymbol = s.substring(1, 2)
                    nextEdit?.setText(secondSymbol)
                }
                // Remove second symbol.
                s.delete(1, s.length)
            }
            nextEdit?.requestFocus()
            nextEdit?.setSelection(nextEdit.length(), nextEdit.length())
            method()
        }
    }

    override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
    }

    override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
    }
}

Then for all EditTexts do following:

currEdit.addTextChangedListener(
    YourTextWatcher(prevEdit, currEdit, nextEdit) { yourMethodToValidateText() })

Instead of prevEdit, currEdit, nextEdit set your EditText controls. For instance, for the first:

edit1.addTextChangedListener(
    YourTextWatcher(null, edit1, edit2) { yourMethodToValidateText() })

yourMethodToValidateText() is a method that will check entered symbols. For instance, you can check if all EditTexts are filled.

This solution has a bug when you try to press BackSpace in empty EditText. Nothing happens, you won't go to a previous EditText. You can catch BackSpace in View.OnKeyListener, but it can intersect with TextWatcher. Also I didn't check a situation when copy & paste a text to EditText, forgot to check, what happens, when select a text in EditText and press Delete.

How to set minimum and maximum characters limitation to EditText , android edittext max length programmatically For example app developer can set restrictions to app user so application user cannot enable to enter more then  User can input more than 5 lines, by pressing enter/next row key. How can I limit user input to fixed amount of rows with EditText? Another way to limit your EditText to one line is the following: editText2.setTransformationMethod (new SingleLineTransformationMethod ());


How to programmatically set maxLength in Android TextView?, android-edittext input type email programmatically set restrictions to app user so application user cannot enable to enter more then specify characters limit. Hi guys! Today I’m gonna show you some Android EditText examples that I usually use in my android applications. EditText in Android examples are simply like a text field, text area or a text input field in online forms. It is an editable TextView. EditText in Android Example List. In this post, we will cover: 1. Creating EditText


android.widget.TextView, The following code sample shows a typical use, with an XML layout and code to android:maxLength, Set an input filter to constrain the text length to the specified number. android:maxLines, Makes the TextView be at most this many lines tall. Overview. The EditText is the standard text entry widget in Android apps. If the user needs to enter text into an app, this is the primary way for them to do that. There are many important properties that can be set to customize the behavior of an EditText.


Set max length for EditText, How to programmatically set maxLength in Android TextView? LengthFilter(​maxLength)) } Then you can just use a simple editText. setTitle("Title"); final EditText input = new EditText(this); input. I need a edit text validation which will only allow number and : symbol.and length should not be more than 5 char.And most I  I had saw a lot of good solutions, but I'd like to give a what I think as more complete and user-friendly solution, which include: 1, Limit length. 2, If input more, give a callback to trigger your toast. 3, Cursor can be at middle or tail. 4, User can input by paste a string. 5, Always discard overflow input and keep origin.