Can ImageButton cause an unresolved R?

Tried to create an app with a few ImageButtons which will play sounds. As the images I added to drawable folder were pretty big, thought they were causing trouble; so tested with launcher images but same error emerged. Fed up with this nagging trouble.. Please suggest an way out..

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">





    <ImageButton

        android:id="@+id/imageButton1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentStart="true"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginStart="28dp"

        android:layout_marginLeft="28dp"

        android:layout_marginTop="26dp"

        android:background="null"

        android:scaleType="fitCenter"

        android:adjustViewBounds="true"

        app:srcCompat="@mipmap/ic_launcher_round" />



    <ImageButton

        android:id="@+id/imageButton2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignTop="@+id/imageButton1"

        android:layout_centerHorizontal="true"

        android:background="null"

        android:scaleType="fitCenter"

        android:adjustViewBounds="true"

        app:srcCompat="@mipmap/ic_launcher" />





</RelativeLayout>

asked Dec 27 '18 at 15:05

kshkz

Please post the error that you are facing
– Prateek Aggarwal
Dec 27 '18 at 15:15

add a comment |

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">





    <ImageButton

        android:id="@+id/imageButton1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentStart="true"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginStart="28dp"

        android:layout_marginLeft="28dp"

        android:layout_marginTop="26dp"

        android:background="null"

        android:scaleType="fitCenter"

        android:adjustViewBounds="true"

        app:srcCompat="@mipmap/ic_launcher_round" />



    <ImageButton

        android:id="@+id/imageButton2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignTop="@+id/imageButton1"

        android:layout_centerHorizontal="true"

        android:background="null"

        android:scaleType="fitCenter"

        android:adjustViewBounds="true"

        app:srcCompat="@mipmap/ic_launcher" />





</RelativeLayout>

asked Dec 27 '18 at 15:05

kshkz

Please post the error that you are facing
– Prateek Aggarwal
Dec 27 '18 at 15:15

add a comment |

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">





    <ImageButton

        android:id="@+id/imageButton1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentStart="true"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginStart="28dp"

        android:layout_marginLeft="28dp"

        android:layout_marginTop="26dp"

        android:background="null"

        android:scaleType="fitCenter"

        android:adjustViewBounds="true"

        app:srcCompat="@mipmap/ic_launcher_round" />



    <ImageButton

        android:id="@+id/imageButton2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignTop="@+id/imageButton1"

        android:layout_centerHorizontal="true"

        android:background="null"

        android:scaleType="fitCenter"

        android:adjustViewBounds="true"

        app:srcCompat="@mipmap/ic_launcher" />





</RelativeLayout>

asked Dec 27 '18 at 15:05

kshkz

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">





    <ImageButton

        android:id="@+id/imageButton1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentStart="true"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginStart="28dp"

        android:layout_marginLeft="28dp"

        android:layout_marginTop="26dp"

        android:background="null"

        android:scaleType="fitCenter"

        android:adjustViewBounds="true"

        app:srcCompat="@mipmap/ic_launcher_round" />



    <ImageButton

        android:id="@+id/imageButton2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignTop="@+id/imageButton1"

        android:layout_centerHorizontal="true"

        android:background="null"

        android:scaleType="fitCenter"

        android:adjustViewBounds="true"

        app:srcCompat="@mipmap/ic_launcher" />





</RelativeLayout>

android imagebutton

asked Dec 27 '18 at 15:05

kshkz

asked Dec 27 '18 at 15:05

kshkz

asked Dec 27 '18 at 15:05

kshkz

asked Dec 27 '18 at 15:05

kshkz

asked Dec 27 '18 at 15:05

kshkz

Please post the error that you are facing
– Prateek Aggarwal
Dec 27 '18 at 15:15

add a comment |

Please post the error that you are facing
– Prateek Aggarwal
Dec 27 '18 at 15:15

Please post the error that you are facing
– Prateek Aggarwal
Dec 27 '18 at 15:15

add a comment |

1 Answer
1

active

oldest

votes

I think there is an issue with your background property. you can not provide "null" value into your background property.

Please try

android:background="@null"

It might help you.

answered Dec 27 '18 at 15:20

Ajay Mehta - Rlogical

514

New contributor

I tried. But 'Can't Resolve R' appears after I add ImageButtons..
– kshkz
Dec 27 '18 at 17:07

I added the background property but error doesn't disperse. Can the size of a image instigate such error?
– kshkz
Dec 27 '18 at 17:15

@kshkz: If possible, please share your code. It will be helpful to dig into it to fix it quickly.
– Ajay Mehta - Rlogical
Dec 28 '18 at 6:42

Yes, It's ok but as your above xml is working fine with the use of android:background="@null". And you are still getting the same error. So if possible share your activity and mipmap resources. It will be helpful to find the solution.
– Ajay Mehta - Rlogical
Dec 28 '18 at 13:26

@ Ajay Mehta: Heartfelt Thanks for your kindness. I am trying to paste the activity_main.xml here but not accepting such long codes here. It was a nagging problem but suddenly the problem disappeared, although I once pondered upon re-installing Android studio. If anything occurs again, I shall ask again. Again tonnes of thanks to you for your kindness.
– kshkz
Dec 28 '18 at 16:03

|
show 1 more comment

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

I think there is an issue with your background property. you can not provide "null" value into your background property.

Please try

android:background="@null"

It might help you.

answered Dec 27 '18 at 15:20

Ajay Mehta - Rlogical

514

New contributor

I tried. But 'Can't Resolve R' appears after I add ImageButtons..
– kshkz
Dec 27 '18 at 17:07

I added the background property but error doesn't disperse. Can the size of a image instigate such error?
– kshkz
Dec 27 '18 at 17:15

@kshkz: If possible, please share your code. It will be helpful to dig into it to fix it quickly.
– Ajay Mehta - Rlogical
Dec 28 '18 at 6:42

Yes, It's ok but as your above xml is working fine with the use of android:background="@null". And you are still getting the same error. So if possible share your activity and mipmap resources. It will be helpful to find the solution.
– Ajay Mehta - Rlogical
Dec 28 '18 at 13:26

@ Ajay Mehta: Heartfelt Thanks for your kindness. I am trying to paste the activity_main.xml here but not accepting such long codes here. It was a nagging problem but suddenly the problem disappeared, although I once pondered upon re-installing Android studio. If anything occurs again, I shall ask again. Again tonnes of thanks to you for your kindness.
– kshkz
Dec 28 '18 at 16:03

|
show 1 more comment

I think there is an issue with your background property. you can not provide "null" value into your background property.

Please try

android:background="@null"

It might help you.

answered Dec 27 '18 at 15:20

Ajay Mehta - Rlogical

514

New contributor

I tried. But 'Can't Resolve R' appears after I add ImageButtons..
– kshkz
Dec 27 '18 at 17:07

I added the background property but error doesn't disperse. Can the size of a image instigate such error?
– kshkz
Dec 27 '18 at 17:15

@kshkz: If possible, please share your code. It will be helpful to dig into it to fix it quickly.
– Ajay Mehta - Rlogical
Dec 28 '18 at 6:42

Yes, It's ok but as your above xml is working fine with the use of android:background="@null". And you are still getting the same error. So if possible share your activity and mipmap resources. It will be helpful to find the solution.
– Ajay Mehta - Rlogical
Dec 28 '18 at 13:26

@ Ajay Mehta: Heartfelt Thanks for your kindness. I am trying to paste the activity_main.xml here but not accepting such long codes here. It was a nagging problem but suddenly the problem disappeared, although I once pondered upon re-installing Android studio. If anything occurs again, I shall ask again. Again tonnes of thanks to you for your kindness.
– kshkz
Dec 28 '18 at 16:03

|
show 1 more comment

I think there is an issue with your background property. you can not provide "null" value into your background property.

Please try

android:background="@null"

It might help you.

answered Dec 27 '18 at 15:20

Ajay Mehta - Rlogical

514

New contributor

I think there is an issue with your background property. you can not provide "null" value into your background property.

Please try

android:background="@null"

It might help you.

answered Dec 27 '18 at 15:20

Ajay Mehta - Rlogical

514

New contributor

answered Dec 27 '18 at 15:20

Ajay Mehta - Rlogical

514

New contributor

answered Dec 27 '18 at 15:20

Ajay Mehta - Rlogical

514

answered Dec 27 '18 at 15:20

Ajay Mehta - Rlogical

514

New contributor

Ajay Mehta - Rlogical is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

I tried. But 'Can't Resolve R' appears after I add ImageButtons..
– kshkz
Dec 27 '18 at 17:07

I added the background property but error doesn't disperse. Can the size of a image instigate such error?
– kshkz
Dec 27 '18 at 17:15

@kshkz: If possible, please share your code. It will be helpful to dig into it to fix it quickly.
– Ajay Mehta - Rlogical
Dec 28 '18 at 6:42

Yes, It's ok but as your above xml is working fine with the use of android:background="@null". And you are still getting the same error. So if possible share your activity and mipmap resources. It will be helpful to find the solution.
– Ajay Mehta - Rlogical
Dec 28 '18 at 13:26

@ Ajay Mehta: Heartfelt Thanks for your kindness. I am trying to paste the activity_main.xml here but not accepting such long codes here. It was a nagging problem but suddenly the problem disappeared, although I once pondered upon re-installing Android studio. If anything occurs again, I shall ask again. Again tonnes of thanks to you for your kindness.
– kshkz
Dec 28 '18 at 16:03

|
show 1 more comment

I tried. But 'Can't Resolve R' appears after I add ImageButtons..
– kshkz
Dec 27 '18 at 17:07

I added the background property but error doesn't disperse. Can the size of a image instigate such error?
– kshkz
Dec 27 '18 at 17:15

@kshkz: If possible, please share your code. It will be helpful to dig into it to fix it quickly.
– Ajay Mehta - Rlogical
Dec 28 '18 at 6:42

Yes, It's ok but as your above xml is working fine with the use of android:background="@null". And you are still getting the same error. So if possible share your activity and mipmap resources. It will be helpful to find the solution.
– Ajay Mehta - Rlogical
Dec 28 '18 at 13:26

@ Ajay Mehta: Heartfelt Thanks for your kindness. I am trying to paste the activity_main.xml here but not accepting such long codes here. It was a nagging problem but suddenly the problem disappeared, although I once pondered upon re-installing Android studio. If anything occurs again, I shall ask again. Again tonnes of thanks to you for your kindness.
– kshkz
Dec 28 '18 at 16:03

I tried. But 'Can't Resolve R' appears after I add ImageButtons..
– kshkz
Dec 27 '18 at 17:07

I added the background property but error doesn't disperse. Can the size of a image instigate such error?
– kshkz
Dec 27 '18 at 17:15

@kshkz: If possible, please share your code. It will be helpful to dig into it to fix it quickly.
– Ajay Mehta - Rlogical
Dec 28 '18 at 6:42

Yes, It's ok but as your above xml is working fine with the use of android:background="@null". And you are still getting the same error. So if possible share your activity and mipmap resources. It will be helpful to find the solution.
– Ajay Mehta - Rlogical
Dec 28 '18 at 13:26

@ Ajay Mehta: Heartfelt Thanks for your kindness. I am trying to paste the activity_main.xml here but not accepting such long codes here. It was a nagging problem but suddenly the problem disappeared, although I once pondered upon re-installing Android studio. If anything occurs again, I shall ask again. Again tonnes of thanks to you for your kindness.
– kshkz
Dec 28 '18 at 16:03

|
show 1 more comment

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