How to set the exact position of an ImageView?

Question

Android

For example, I have a ready-made background and I need to make sure that the ImageView that I place on this background occupies a certain location at all resolutions. I tried to set the location based on the location as a percentage of the edges of the screen, but still there is a shift at different resolutions, which drastically spoils everything.
How can you create such a thing so that everything is in its place on any device?

Answer 1

android:layout_marginTop="10dp"
            android:layout_gravity="center_horizontal"

This will place the ImageView in the center and indent from the top of the container by 10dp (Similarly, you can shift left and right)

Answer 2

<?xml version="1.0" encoding="utf-8"?>
<android.support.percent.PercentRelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:background="@drawable/hangar"
    tools:context="samsung.ru.spacex.Hangar">

    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="12%"
        app:layout_heightPercent="70%"
        app:layout_marginLeftPercent="8%"
        app:layout_marginBottomPercent="6%"
        android:background="@drawable/rocket_1"
        android:id="@+id/imageButton5"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"

        />