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Android XML - EditText word-wrapping without newlines

I have this stupid and seemingly trivial problem with the properties of an EditText.
The properties I am trying to achieve for the EditText, are the following:
The contents of the view should NOT contain newlines. It can be text, numbers, symbols, but no newlines.
The soft keyboard should NOT display the enter button because of the above. It should instead display something like "Send" or "Done".
The contents of the view should NOT continue horizontally when reaching the edge of the screen. Instead I want to wrap the text, displaying it on multiple lines.
I have tried many different combinations, but I can not achieve this combination.
What I currently have is this, which is inside a RelativeLayout:
<EditText
android:id="#+id/comment_box"
android:layout_width="match_parent"
android:layout_height="80dp"
android:layout_below="#id/preparation_text"
android:hint="#string/comment_hint"
android:inputType="textCapSentences|textAutoCorrect|text"
android:scrollHorizontally="false"
android:maxLength="400"
android:imeOptions="actionSend"/>
It achieves 2 of 3. No newlines possible, keyboard displays "Send" rather than the enter-key for me, but the text continues on one line.
Changing inputType="text" to "textMultiLine" wraps text correctly on multiple lines, but also overrides the keyboard to always display the enter button.
I have tried different solutions around the Internet, including setting the properties maxLines="4", singleLine="true" and possible others that I have forgotten again.
I can not find a combination that works.

Output:
Exp:
The op is on right track. I did some research found that some options gets ignored which are specified in XML. but if the same options are set in code then it should do the trick. I used the same XML fragment specified in the question.
<EditText
android:id="#+id/edit_text"
android:layout_width="match_parent"
android:layout_height="80dp"
android:hint="hint"
android:inputType="textCapSentences|textAutoCorrect|text"
android:scrollHorizontally="false"
android:maxLength="400"
android:imeOptions="actionSend"
/>
And by adding the following lines in the code, it helped in achieving what you want.
edit_text.setMaxLines(Integer.MAX_VALUE);
edit_text.setHorizontallyScrolling(false);

textShortMessage is the inputType that you are looking for:
<EditText
android:id="#+id/commentEditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="100dp"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:paddingTop="2dp"
android:paddingBottom="2dp"
android:gravity="left"
android:text=""
android:hint="hint"
android:textSize="16dp"
android:textColor="#android:color/black"
android:lineSpacingExtra="0dp"
android:lineSpacingMultiplier="1"
android:background="#android:color/white"
android:selectAllOnFocus="true"
android:inputType="textShortMessage|textMultiLine|textCapSentences"
android:singleLine="false" />
Refere to this to prevent paste function. To prevent pasting a new line.

Please use android:imeOptions="actionSend"
to solve your problem.

I have the same issue a long time ago, you have to programmatically change Edittext property on OnCreate().
So in XML, create your Edittext like this
<EditText
android:id="#+id/comment_box"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="80dp"
android:hint="Comment here"
android:maxLength="400"
android:inputType="textMultiLine" />
And on onCreate() (I wrote in kotlin not Java)
comment_box.imeOptions = EditorInfo.IME_ACTION_SEND
comment_box.setRawInputType(InputType.TYPE_CLASS_TEXT)

How to make Android EditText expand vertically when full

I have this EditText
<EditText
android:layout_width="match_parent"
android:layout_height="72dp"
android:hint="#string/write_message"
android:textColorHint="#color/primary_color"
android:ems="10"
android:imeOptions="actionDone"
android:inputType="textImeMultiLine"
android:id="#+id/message_input"
android:layout_gravity="center_horizontal"
android:backgroundTint="#color/primary_color"/>
When the box is filled up with user inputted text, it scrolls to the right to make room for more text, I do not like this behavior, and would prefer it if the EditText box expanded upwards when it needs more room? Is there a way to do this? Thanks.

Yes, this actually involves two things:
Making the EditText accept multi-line input.
Having its height grow as more text lines are added.
Therefore, to achieve this, you need to set up:
android:inputType="textMultiLine"
android:layout_height="wrap_content"
(Be mindful of the difference between textMultiLine and textImeMultiLine).
The full XML snippet would be:
<EditText
android:layout_width="match_parent"
android:inputType="textMultiLine"
android:layout_height="wrap_content"
android:hint="#string/write_message"
android:textColorHint="#color/primary_color"
android:ems="10"
android:imeOptions="actionDone"
android:id="#+id/message_input"
android:layout_gravity="center_horizontal"
android:backgroundTint="#color/primary_color"/>

Use both flags: textMultiLine will wrap your input, and textImeMultiLine will provide a break-line key in your keyboard.
<EditText
...
android:layout_height="wrap_content"
android:inputType="textImeMultiLine|textMultiLine"
... />

In my case I have multiline text, but it showed one line and a keyboard:
Though I have already set android:inputType="textCapSentences|textAutoCorrect|textMultiLine", it didn't help. Then I understood that when the keyboard appears in DialogFragment, it collapses the EditText. See DialogFragment and force to show keyboard to show keyboard when DialogFragment shows.
Then I added a short delay (100-300 ms) before showing the keyboard. Now I have:
In AndroidManifest I set android:windowSoftInputMode="adjustResize" for current activity.

Android EditText doesn't show keyboard hint if use more than one inputType attribute

I'm trying to have an Edit text with keyboard hints and auotcorrection for words (such as when you write a message in whatsapp).
This is my code:
<EditText
android:id="#+id/autoCompleteTextView1"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_margin="20dp"
android:layout_weight="1"
android:background="#color/white"
android:ems="10"
android:inputType="textCapSentences|textMultiLine|textAutoCorrect|textAutoComplete"
android:scrollHorizontally="false"
android:hint="#string/note_content"
android:textColor="#color/black_text" />
According with the documentation it should work but it doesn't.
I've also tried using the deprecated android:autoText="true".
I need all the functionallity specified in the InputType
Edit:
After some try I discovered that if I set only one attribute without problem but if I set all of what I need nothing work correctly.
Edit 2:
What I want to obtain is something like the Whatsapp editbox where you write your message.

Maybe it has to do with the input type, have you tried single combinations?
Using a combination of textAutoCorrect and textAutoComplete might not always work

Warning on EditText

I'm trying to define an EditText but this warning is shown:
This text field does not specify an inputType or a hint.
The code in main.xml is:
<EditText android:id="#+id/input"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/textTest" />
How can I fix it?

You could add a hint :
android:hint="This will appear to the user if he didn't enter something yet in the EditText"
and a inputType so you could present to the user a better suited soft keyboard for the text he is suposed to enter in the EditText:
android:inputType="number"
will present a soft keyboard with only numbers and various signs.
Those are just warnings, you could ignore them but is better for the user to implement them.

<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text"
>
I think You should add input type.......

This is a known issue. Sometimes it doest work with changing to:
android:inputType="text"
I got it to work by setting:
android:inputType="textNoSuggestions"
Hope this helps

Above all are the solutions but before that you should understand what does that warnig mean.
Hint:- Hint is the text shown to user before writing anything over.
For eg. if you are putting a edittext where you want user to add his
name then you can write
<Edittext
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:hint="Enter Name"/>
Input Type:- This is the xml tag that is to be used within edittext to let edittext to follow that particular restriction. if you are giving inputtype:number then user would be able to enter only numbers. There are several input type fields are there for that you can refer official developer site.

How to remove the underline from the EditText field in Android?

Whenever a word is typed in the EditText box, I always see an underline under the word being typed. But when I press a space after that word I no longer see the underline.
My reqirement is to remove that underline when the user is typing the message.
Added is the screenshot and we see that Smith is underlined. But I don't want this to happen.
Below is the xml that I use for the AlertDialog box.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/name_view"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginLeft="20dip"
android:layout_marginRight="20dip"
android:text="#string/alert_dialog_name"
android:gravity="left"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="#+id/username_edit"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:layout_marginLeft="20dip"
android:layout_marginRight="20dip"
android:scrollHorizontally="true"
android:autoText="false"
android:inputType="textPersonName"
android:capitalize="none"
android:gravity="fill_horizontal"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>

android:inputType="textNoSuggestions"

There is a function that removes any composing state. I think if you call it after every time a user types, you will not see the underline. I use it after the user finishes typing, to get the drawing cache of the entire textView (which I need without underline). It's
someTextView.clearComposingText();

You don't have to use any logic to remove the underlines -- just call getText().toString() when you want to use the value. It won't include special formatting or anything.

accepted answer is not given solution, and some other user given answer but no one given full anser, so that's why i write here working solution.
If you want to remove underline then just add below code.
XML
android:inputType="textNoSuggestions"
Java
EditText ed;
ed = findViewById(yourId);
ed.setInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
If you want to set more than one input type then,
ed.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
May be above information is helpful to others.

The best solution for this is to add on your EditText:
android:inputType="textMultiLine|textVisiblePassword"

Use this from your class, if EditText view is dynamic (created from class file):
EditText.setInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
OR include android:inputType="textNoSuggestions" with your EditText in XML.

Read this if you want to keep emojis and textNoSuggestions doesn't work for you.
textNoSuggestions does not work in every keyboard.
inputType="textVisiblePassword" works but it removes emoji's from most keyboards.
I found that setting inputType="textUri" works and keeps the ability to add emojis.

try:
android:inputType= InputTypes.TextVariationVisiblePassword;

<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#null"
android:imeOptions="actionDone"
android:inputType="textNoSuggestions"
android:maxLines="1"
/>