如何在 Android Studio 中执行浮动提示/文本？

Question

I have a box to type in the user's username, and when the area is selected, I want the "username" text to slide up so it is still visible when typing the username. See code for more information.

 <ImageView
        android:id="@+id/imageView8"
        android:layout_width="332dp"
        android:layout_height="45dp"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="30dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/imageView7"
        app:srcCompat="@drawable/input_background" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:clickable="true"
        android:fontFamily="@font/days_one"
        android:gravity="center_vertical"
        android:paddingLeft="10dp"
        android:text="Username"
        android:textColor="#747474"
        app:layout_constraintBottom_toBottomOf="@+id/imageView8"
        app:layout_constraintStart_toStartOf="@+id/imageView8"
        app:layout_constraintTop_toTopOf="@+id/imageView8" />
</androidx.constraintlayout.widget.ConstraintLayout>

Answer 1

You can achieve this using TextInputLayout with an editText inside it

<com.google.android.material.textfield.TextInputLayout
    android:id="@+id/username_text_input_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <EditText
        android:id="@+id/etUsername"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:ems="10"
        android:hint="Username" />

</com.google.android.material.textfield.TextInputLayout>

check this link at the headline called "Displaying Floating Label Feedback

https://guides.codepath.com/android/Working-with-the-EditText#displaying-floating-label-feedback