You can use this trick

<RelativeLayout
    android_layout_width="match_parent"
    android_layout_margin="5dp"
    android_layout_height="200dp">
    <com.google.android.material.textfield.TextInputLayout
        android_id="@+id/outlinedTextField"
        android_layout_width="match_parent"
        android_layout_height="match_parent"
        android_hint="@string/label"
        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox">

        <com.google.android.material.textfield.TextInputEditText
            android_layout_width="match_parent"
            android_layout_height="match_parent"
            />

    </com.google.android.material.textfield.TextInputLayout>
    <ImageView
        android_layout_width="20dp"
        android_layout_height="20dp"
        android_src="@drawable/ic_microphone"
        android_layout_alignParentEnd="true"
        android_layout_alignParentBottom="true"
        android_layout_margin="5dp"/>
</RelativeLayout>
  

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