place ImageView on ImageButton-CodePudding

so i want to crate a pause button for a game and i want to use the drawable button and the pause icon but it gives me this error

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.crazyromteam.musicworldrecreation/com.crazyromteam.musicworldrecreation.GameActivity}: android.view.InflateException: Binary XML file line #18 in com.crazyromteam.musicworldrecreation:layout/activity_game: android.widget.ImageButton cannot be cast to android.view.ViewGroup

here is my xml implemetation of this

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".GameActivity">
<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/holo_blue_dark">

    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:src="@drawable/circle_button" >

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:src="@drawable/pause_button_small" />
</ImageButton>

    <com.crazyromteam.musicworldrecreation.GameSurfaceView
        android:id="@ id/surface"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/game_bg"/>

</FrameLayout>
</RelativeLayout>

CodePudding user response：

If you are placing ImageView inside an ImageButton tag this is a crushing issue.

Try to change ImageButton image from java/kotlin code based on there onClick event

CodePudding user response：

To answer your question of why you are receiving a RuntimeException, the key is here in your implementation of your ImageButton:

    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:src="@drawable/circle_button" >

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:src="@drawable/pause_button_small" />
</ImageButton>

You are nesting the ImageView within the ImageButton. This is not allowed as stated in the exception: android.widget.ImageButton cannot be cast to android.view.ViewGroup. A ViewGroup is a view which other views can be nested in, so when you nest a child view inside the ImageButton, it becomes intepreted as a ViewGroup, except the ImageButton cannot be interpreted that way. If you remove the nested ImageView, you will no longer receive this exception.

Your question is unclear to me as to what you are trying to attempt, but to simply state how to put the image on the ImageButton, declare the drawable in android:src, which you are already declaring on the ImageButton. That is where you image should go.

    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:src="@drawable/pause_button_small" />