在约束布局 Android 中创建自定义布局

Question

How to make custom layout in constraint layout according to the layout shown in image

Answer 1

Icon at left-parent + right-parent

EditText at left-toRight-icon + right-parent

Button INSIDE EditText with right-gravity

Custom background in EditText

Answer 2

Try something like this

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <ImageView
        android:id="@+id/iconImage"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:layout_marginTop="8dp"
        android:layout_marginLeft="8dp"
        android:src="@mipmap/ic_launcher_round"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent"/>

    <EditText
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        app:layout_constraintLeft_toRightOf="@id/iconImage"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintRight_toLeftOf="@id/imageBtn"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:hint="I want to..." />

    <ImageButton
        android:id="@+id/imageBtn"
        android:layout_width="48dp"
        android:layout_height="48dp"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        app:layout_constraintRight_toRightOf="parent"/>

</android.support.constraint.ConstraintLayout>