Click here to Skip to main content
14,431,034 members
   

Android

 
AnswerRe: android layout problem Pin
OriginalGriff25-Sep-18 3:19
communityengineerOriginalGriff25-Sep-18 3:19 
GeneralMessage Closed Pin
10-Nov-18 11:36
Memberlara simon10-Nov-18 11:36 
QuestionHow to measure a room using frustum in AR(Augmented Reality)? Pin
Member 139764627-Sep-18 1:54
MemberMember 139764627-Sep-18 1:54 
AnswerRe: How to measure a room using frustum in AR(Augmented Reality)? Pin
Marco Bertschi7-Sep-18 1:56
professionalMarco Bertschi7-Sep-18 1:56 
QuestionNeed help with android studio java. my app keeps crashing due to an null error but cant figure out why? Pin
Member 1391233215-Jul-18 9:10
MemberMember 1391233215-Jul-18 9:10 
AnswerRe: Need help with android studio java. my app keeps crashing due to an null error but cant figure out why? Pin
Afzaal Ahmad Zeeshan15-Jul-18 10:21
mvaAfzaal Ahmad Zeeshan15-Jul-18 10:21 
QuestionRe: Need help with android studio java. my app keeps crashing due to an null error but cant figure out why? Pin
Member 1391233215-Jul-18 12:49
MemberMember 1391233215-Jul-18 12:49 
AnswerRe: Need help with android studio java. my app keeps crashing due to an null error but cant figure out why? Pin
Afzaal Ahmad Zeeshan15-Jul-18 13:31
mvaAfzaal Ahmad Zeeshan15-Jul-18 13:31 
I shared a link for a thread that talks about a common problem in Android programming. The function findViewById() tries to capture the View from the current context or the scope, which is mostly the Activity. When you try to find the view by the ID of, keywordlist, runtime will try to find the view inside the current context, most likely, Activity you are currently inside.

For example, you just inflated the activity_main layout, but you are having the ListView defined inside another layout file,
<ListView

    android:id="@+id/keywordlist" 

    android:layout_width="match_parent" 

    android:layout_height="match_parent">
</ListView>
This is one of the problems that you might be facing, because your View is not even inflated — unless your activity_main tries to inflate this view internally, which I am not sure of as you did not show the code for that activity.

I did not run the code, or analyze it completely, but most likely there are two things that might go wrong here,
  1. The view does not get inflated, or it not found in the context you are trying to look under.
  2. You are not using the correct ID of the element.
Also check if the ID is being used correctly and for the view you are expecting to be there. Debug, debug, debug. Also try to listen on a click listener of the view and find the ID or parents of that to check the hierarchy of the elements.
The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~

GeneralRe: Need help with android studio java. my app keeps crashing due to an null error but cant figure out why? Pin
Member 1391233215-Jul-18 13:39
MemberMember 1391233215-Jul-18 13:39 
GeneralRe: Need help with android studio java. my app keeps crashing due to an null error but cant figure out why? Pin
Member 1391233215-Jul-18 21:51
MemberMember 1391233215-Jul-18 21:51 
GeneralMessage Closed Pin
18-Jul-18 22:16
Memberpoojaagrawal290218-Jul-18 22:16 
QuestionLooking for somebody to write app with in Android Studio Pin
Ramona_Android9-Jul-18 5:54
MemberRamona_Android9-Jul-18 5:54 
AnswerRe: Looking for somebody to write app with in Android Studio Pin
Richard MacCutchan9-Jul-18 6:29
communityengineerRichard MacCutchan9-Jul-18 6:29 
GeneralRe: Looking for somebody to write app with in Android Studio Pin
Ramona_Android9-Jul-18 6:41
MemberRamona_Android9-Jul-18 6:41 
AnswerMessage Closed Pin
26-Jul-18 7:04
MemberMember 1392695726-Jul-18 7:04 
AnswerMessage Closed Pin
26-Jul-18 22:13
Membernazneen shaikh26-Jul-18 22:13 
AnswerRe: Looking for somebody to write app with in Android Studio Pin
Kelly Ferguson19-May-19 23:53
MemberKelly Ferguson19-May-19 23:53 
QuestionAndroid- Accessing an asset folder using file browsing dialog window Pin
NiKHiLMS7-Jul-18 0:48
MemberNiKHiLMS7-Jul-18 0:48 
SuggestionRe: Android- Accessing an asset folder using file browsing dialog window Pin
David Crow9-Jul-18 4:40
MemberDavid Crow9-Jul-18 4:40 
GeneralRe: Android- Accessing an asset folder using file browsing dialog window Pin
NiKHiLMS9-Jul-18 20:18
MemberNiKHiLMS9-Jul-18 20:18 
SuggestionRe: Android- Accessing an asset folder using file browsing dialog window Pin
David Crow10-Jul-18 2:56
MemberDavid Crow10-Jul-18 2:56 
QuestionDialog with Landscape Orientation Pin
Django_Untaken4-Jul-18 21:16
MemberDjango_Untaken4-Jul-18 21:16 
Questionput orders from android and receive from PHP Pin
AndroidVH22-Jun-18 21:13
MemberAndroidVH22-Jun-18 21:13 
SuggestionRe: put orders from android and receive from PHP Pin
Richard MacCutchan22-Jun-18 22:27
communityengineerRichard MacCutchan22-Jun-18 22:27 
GeneralRe: put orders from android and receive from PHP Pin
AndroidVH22-Jun-18 22:58
MemberAndroidVH22-Jun-18 22:58 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.