How to check the equality of the background of an ImageView with an image from a drawable?

Question

Android

How to check the equality of the background of an ImageView with an image from a drawable?

Answer 1

Compare Drawable of two ImageViews:

Drawable first = imageViewFirst.getDrawable();
Drawable second = imageViewSecond.getDrawable();
Drawable.ConstantState stateFirst = first.getConstantState();
Drawable.ConstantState stateSecond = second.getConstantState();
if(stateFirst.equals(stateSecond)) {
 // ваш код
}

Drawable imageViewDrawable = imageViewFirst.getDrawable();
Drawable.ConstantState imageViewDrawableState =imageViewDrawable.getConstantState();

Drawable fromResourcesDrawable = getResources().getDrawable(R.drawable.my_drawable);// ваш ресурс
Drawable.ConstantState fromResourcesState =  fromResourcesDrawable.getConstantState();

if(imageViewDrawable.equals(fromResourcesState)) {
 // ваш код
}

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:background="@drawable/bgforobject"
    tools:context="samsung.ru.spacex.InfRocket">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="30%"
        app:layout_heightPercent="10%"
        app:layout_marginTopPercent="3%"
        app:layout_marginLeftPercent="28.9%"
        android:background="@drawable/rocket_name1"
        android:id="@+id/imageViewNameRocket_1"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
      />

        <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="10%"
        app:layout_heightPercent="70%"
        app:layout_marginBottomPercent="10.8%"
        app:layout_marginLeftPercent="28.9%"
        android:background="@drawable/rocket_2"
        android:id="@+id/imageViewInfRocket"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="20%"
        app:layout_heightPercent="10%"
        app:layout_marginTopPercent="20%"
        app:layout_marginRightPercent="28.9%"
        android:background="@drawable/speed"
        android:id="@+id/imageViewSpeed"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="25%"
        app:layout_heightPercent="20%"
        app:layout_marginTopPercent="14.5%"
        app:layout_marginRightPercent="10%"
        android:background="@drawable/counts3"
        android:id="@+id/imageViewCounts3"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="24%"
        app:layout_heightPercent="10%"
        app:layout_marginTopPercent="32%"
        app:layout_marginRightPercent="28.9%"
        android:background="@drawable/strength"
        android:id="@+id/imageViewStrength"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="25%"
        app:layout_heightPercent="20%"
        app:layout_marginTopPercent="26.5%"
        app:layout_marginRightPercent="10%"
        android:background="@drawable/counts2"
        android:id="@+id/imageViewCounts2"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="24%"
        app:layout_heightPercent="10%"
        app:layout_marginTopPercent="44%"
        app:layout_marginRightPercent="28.9%"
        android:background="@drawable/mobility"
        android:id="@+id/imageViewMobility"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="25%"
        app:layout_heightPercent="20%"
        app:layout_marginTopPercent="38.5%"
        app:layout_marginRightPercent="10%"
        android:background="@drawable/counts2"
        android:id="@+id/imageViewCounts22"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="24%"
        app:layout_heightPercent="10%"
        app:layout_marginTopPercent="56%"
        app:layout_marginRightPercent="28.9%"
        android:background="@drawable/capacity"
        android:id="@+id/imageViewCapacity"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="25%"
        app:layout_heightPercent="20%"
        app:layout_marginTopPercent="50.5%"
        app:layout_marginRightPercent="10%"
        android:background="@drawable/counts4"
        android:id="@+id/imageViewCounts4"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_widthPercent="16%"
        app:layout_heightPercent="9%"
        app:layout_marginRightPercent="17%"
        app:layout_marginBottomPercent="19%"
        android:id="@+id/imageButtonBuyRocket"
        android:background="@drawable/buy"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentBottom="true" />


</android.support.percent.PercentRelativeLayout>