How to hide underbar in EditText

2020-01-26 12:41发布

How can I hide the EditText underbar (the prompt line with little serifs at the ends)?

There might be a better way to do what I want: I have a layout with an EditText. Normally, this displays fine where the user can tap on it and begin entering or editing text.

Sometimes, however, I would like to use the same layout (simplifies other logic) to display the same data in a read-only manner. I want the presentation to be similar - it should have the same height and same font, but not have the underbar.

As a stop-gap measure, I'm going to implement this by removing the EditText and substituting a TextView. I think that will give the desired results, but it seems like a roundabout an expensive way to do something that ought to be easy to do by changing attributes.

23条回答
混吃等死
2楼-- · 2020-01-26 13:03

I have something like this which is very very useful:

generalEditText.getBackground().mutate().setColorFilter(getResources().getColor(R.color.white), PorterDuff.Mode.SRC_ATOP);

where generalEditText is my EditText and color white is:

<color name="white">#ffffff</color>

This will not remove padding and your EditText will stay as is. Only the line at the bottom will be removed. Sometimes it is more useful to do it like this.

If you use android:background="@null" as many suggested you lose the padding and EditText becomes smaller. At least, it was my case.

A little side note is if you set background null and try the java code I provided above, your app will crash right after executing it. (because it gets the background but it is null.) It may be obvious but I think pointing it out is important.

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爷、活的狠高调
3楼-- · 2020-01-26 13:04

What I did was to create a Shape drawable and set that as the background:

<?xml version="1.0" encoding="utf-8"?>
<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <padding
        android:top="8dp"
        android:bottom="8dp"
        android:left="8dp"
        android:right="8dp" />

    <solid android:color="#fff" />

</shape>

Note: I actually used @dimen and @color values for the firelds, but I've simplified the shape file here for clarity.

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We Are One
4楼-- · 2020-01-26 13:04

Set background to null

android:background="@null" in your xml 
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可以哭但决不认输i
5楼-- · 2020-01-26 13:05

Simply Use This

 editText.setBackgroundColor(Color.TRANSPARENT);
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Explosion°爆炸
6楼-- · 2020-01-26 13:07

In my case, editText.setBackgroundResource(R.color.transparent); is best.

It doesn't remove default padding, just under bar.

R.color.transparent = #00000000

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迷人小祖宗
7楼-- · 2020-01-26 13:09

If you want this to affect all instances of EditText and any class that inherits from it, then you should set in your theme the value for the attribute, editTextBackground.

  <item name="android:editTextBackground">@drawable/bg_no_underline</item>

An example of the drawable I use is:

<inset xmlns:android="http://schemas.android.com/apk/res/android"
     android:insetLeft="@dimen/abc_edit_text_inset_horizontal_material"
     android:insetRight="@dimen/abc_edit_text_inset_horizontal_material"
     android:insetTop="@dimen/abc_edit_text_inset_top_material"
     android:insetBottom="@dimen/abc_edit_text_inset_bottom_material">
    <selector>
      <item android:drawable="@android:color/transparent"/>
    </selector>
</inset>

This is slightly modified version of what the default material design implementation is.

When applied it will make all your EditText remove the underline throughout the app, and you don't have to apply the style to each and every one manually.

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