Android EditText with different floating label and placeholder

早过忘川 提交于 2019-12-02 19:27:29

You can do this using TextInputLayout and EditText.

Here is your XML:

<android.support.design.widget.TextInputLayout
    android:id="@+id/text_input_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="Label">

    <EditText
        android:id="@+id/edit_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="text" />

</android.support.design.widget.TextInputLayout>

1. Add attribute android:hint="Label" to TextInputLayout to show its hints Label always.

2. Programmatically set EditText hints Placeholder only when EditText get focused.

Add below lines in your Activity:

    .........
    .................

    final EditText editText = (EditText) findViewById(R.id.edit_text);

    editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
        @Override
        public void onFocusChange(View view, boolean hasFocus) {
            if (hasFocus) {
                editText.setHint("Placeholder");
            } else {
                editText.setHint("");
            }
        }
    });

    .........
    ..................

OUTPUT:

Hope this will help~

<android.support.design.widget.TextInputLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="Label">

    <android.support.design.widget.TextInputEditText
        android:hint="Placeholder"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="textEmailAddress" />

</android.support.design.widget.TextInputLayout>

Notice that android:hint="Placeholder" from TextInputEditText is visible at the same time with android:hint="Label" from TextInputLayout when view is not focused. You could do some extra checking in your java code to show and hide that label. Or just leave android:hint="Placeholder" from TextInputLayout.

To change color, you need to set a theme using android:theme="@style/TextLabel for TextInputLayout and there set your color accent.

<style name="TextLabel" parent="TextAppearance.AppCompat.Light">
   <item name="colorAccent">@color/yourColor</item>
</style>

You can use following code (in kotlin). It will show placeholder after 200 ms delay (to avoid overlapping hint and placeholder).

class PlaceholderEditText : TextInputEditText {

    constructor(context: Context) : super(context)
    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
    constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr)

    private val placeholder = hint

    init {
        hint = ""
        onFocusChangeListener = OnFocusChangeListener { _, hasFocus ->
            if (hasFocus) {
                postDelayed({ hint = placeholder }, 200)
            } else {
                hint = ""
            }
        }
    }
}

and then in layout xml class:

    <android.support.design.widget.TextInputLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="ALWAYS VISIBLE LABEL">

        <com.myapp.widget.PlaceholderEditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="DISAPPEARING PLACEHOLDER" />

    </android.support.design.widget.TextInputLayout>

You can use below layout xml file as below.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
    android:text="Label"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/textView2"
    android:textColor="@color/wallet_holo_blue_light" />
<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:inputType="textPersonName"
    android:text="Name"
    android:ems="10"
    android:id="@+id/editText2"
    android:hint="Placeholder" />
    </LinearLayout>

If you use textinputlayout then on focus of edittext, you didn't get any placeholder.

Layout:

<android.support.design.widget.TextInputLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

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

</android.support.design.widget.TextInputLayout>

You have to set a focus change listener of the edittext.

Java:

usernameTxt.setOnFocusChangeListener(new View.OnFocusChangeListener() {
    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        if (hasFocus) {
            usernameTxt.setHint("Label");
        } else {
            usernameTxt.setHint("Placeholder");
        }
    }
});

GIVEN: A TextInputEditText nested in TextInputLayout!

TL;DR!: Use this Kotlin Extension Function

fun EditText.setHintAndLabel(
        textInputLayout: TextInputLayout,
        label: String?, // hint in the TextInputLayout
        hint: String? // hint in the EditText
) {
    this.hint = ""
    textInputLayout.hint = label

    this.onFocusChangeListener = View.OnFocusChangeListener { _, hasFocus ->
        if (hasFocus) {
            this.hint = hint ?: ""
        } else {
            this.hint = ""
        }
    }
}

What's the problem and how does it solve it?

The Problem is that the hint of the EditText gets overlapped if there is a hint in the TextInputLayout. Which one to show in this case? Good question: We only want the EditText's hint to be displayed when it's focused/the cursor is inside but the TextInputLayout hint to be displayed always.

⮑ So we only set the hint for the EditText when it has the focus and remove it once it loses focus 🐙

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