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Findviewbyid returns null custom view. The ID tag is part of attrs, so if you ignore attrs, you delete the ID. Findviewbyid returns null. But, as you can see, i already added super (context, attrs); to the constructor. 1 support libraries, my App crashes when I try to get a LinearLayout using the findViewById method in the onBindViewHolder. How would I solve this issue? you don't have any assurance that the children of your custom layout If I use findViewById for my custom view in the addNewView() method above then all is well. By the end, you’ll In this article, we will explore multiple solutions to fix the findViewById null issue in Kotlin with proper code examples. findViewById (R. However, if I try to use findViewById anywhere else in the activity after the view has been But findViewById returns null, which causes NullPointerExceptions whenever im trying to do something with the two buttons that are inside the LinearLayout. It's like it starts, but doesn't actually RUN. (I checked all the other Why does "findViewById" return null in the oncreate method for android? Asked 11 years, 7 months ago Modified 11 years, 7 months ago Viewed 811 times Why does "findViewById" return null in the oncreate method for android? Asked 11 years, 7 months ago Modified 11 years, 7 months ago Viewed 811 times Can a findviewbyid be null in a custom view? FindViewById can be null if you call the wrong super constructor in a custom view. Whether you’re using traditional Thank you . id. Is there anything special I should know about starting a new intent? It goes something like this for me: I've tried a couple different methods but it doesn't seem to be working. public class CropImageView extends FrameLayout { private ImageView findViewById () returns null for some custom views in single layout application while it works fine for others Asked 9 years, 6 months ago Modified 9 years, 6 months ago Viewed 135 times When using findViewById inside an OnClickListener, it's common to encounter a null return value. Note: My github does not contain the source with this problem, please go to the Android: Accessing other views from inside a custom view using findViewById (). In this blog, we’ll demystify this error, explore its root causes, and provide step-by-step solutions to fix it—including a guide to converting Java dialog code to Kotlin safely. findViewById () returns a View if it exists in the layout you provided in setContentView (), otherwise it returns null and that's what happening to you. So basically I tried to create a view using xml and this xml is located in res/l findviewbyid () returns null - in a custom CursorAdapter bindview () Asked 15 years, 9 months ago Modified 15 years, 9 months ago Viewed 1k times I'm trying to populate custom ListView with this LazyAdapter class from this tutorial I want to make list view items with custom design. The returned View is always getActivity(). textview_oferta_preco, it returns null. But as simple as it looks, every call to findViewById results in a My problem is the following: When the user input is higher than 4, the findViewById method throws a NullPointer Exception, even though the View it is pointing at is found and returned just fine When I try to create a reference to the empty RelativeLayout by calling ViewGroup. ) (from the layout file activity_main. public void onCreate(Bundle savedInstanceState) { Your tab_connect etc. In the onCreate() method the findViewById() returns null for all ids and this causes a null pointer exception later. Use View Binding or Data Binding to avoid the need for manual null checks altogether. article); But getView() works fine and I can update the text. call_icon); is returning null for some reason. tagField); always returns null, no matter how or where it's called – globally, local final, etc. NullPointerException related to findViewById in Android applications with practical solutions and code examples. This line returns null EditText et = (EditText)findViewById(R. 6 and above It is used to bind the views to the code in other words we can simply say I have the following code which after clicking on the button findViewById returns null but when I set the onclick attribute of the picture itself to change the picture there is no null exception The same can be done for any valid Android View object, such as a Button or a CheckBox view. However, I have found that in such situations, sometimes the id attribute works for all the views in the layout except the custom Discover effective solutions for troubleshooting findViewById () returning null in custom view classes in Android development. This means that views which are not part of the main view hierarchy, even if they have the In init method, findViewById returns null on R. I think the issue is that maybe the animation is expecting to use xml id layout Android: listview: custom items: nullpointerexception, findviewbyid returns null Asked 12 years, 11 months ago Modified 11 years, 3 months ago Viewed 3k times Creating custom view and findViewById returns null Asked 13 years, 6 months ago Modified 13 years, 6 months ago Viewed 488 times The problem I get is that the findViewById returns null, instead of giving me the ImageView. xml has the view BottomSelectElement (custom view) but I cannot find it in the activity, but I can find anything else. If I do findViewById outside the onCreateView with either getActivity() or getView(), it returns null and my app crashes. Bellow follow my classs and my layouts. 17 When your custom view constructed, the child view has not been attached to your view. But the issue is not reproducible at all. I am having a problem where in the started Intent, the findViewById returns null. Initializing the listeners in the Learn effective methods to resolve issues with findViewById returning null for dynamically created views in Android development. are include d in fragment_main layout and not in activity_main layout that is inflated when you call findViewById() for those ids. why custom image view 's findviewbyId returns null Asked 13 years, 8 months ago Modified 13 years, 8 months ago Viewed 2k times I'm not 100% sure but you are calling the findviewbyid's in the class initialisation. In my fragment, After I inflate the layout, findViewById() method returns null sometimes. R. Includes full code and ViewBinding implementation for Using View Binding to eliminate nullability risks entirely. So not only the variables (mainactivity and so on) are null. When you call the findViewById() method, the java android nullpointerexception android-custom-view custom-view edited Oct 7, 2016 at 4:28 V-rund Puro-hit 5,53493352 asked Feb 15, 2016 at 19:11 der_Fidelis 1,51511126 2 I have a custom renderer for my GradientTabbedPage, and I'm trying to set a gradient background to the BottomNavigationView, but each Resource Id I try to use ends up with it returning . In the second activity (activity_display_mess After building the project, the very first FindViewById call in OnCreate of my main view suddenly returned null when run on a physical device It turns out I had just run some updates findViewById return null in custom view Asked 11 years, 4 months ago Modified 11 years, 4 months ago Viewed 214 times View. As an Android software developer, am sure you are very In Android development, particularly when dealing with Fragments, it is common for the findViewById () method to return NULL. I printed the view hierarchy and it has the element, but somehow findViewById() of the activity cannot findViewByID returns null after setting same id to the view Asked 9 years, 11 months ago Modified 4 years, 4 months ago Viewed 953 times However, when I call findViewById in setupInnerViewElements method on my class that extends Card to find R. java class) to my main activity. setImageResource(android. findViewById might return null if the View's was declared gone inside the layout file (). If you attempt to call findViewById () on the ID of a view that is not from the Activity that holds the view, It never ends and it never does anything when I emulate it. I'm doing As @Declan Nnadozie already mentioned: btnYES = findViewById(R. I tried various of solutions that I find in here (stack View Binding ViewBinding is available from Android Studio 3. 3. Basically, the cause is that a textview is null because findViewById returns null. As you can see in the comment, both methodIcon and methodText are null because findViewById () on I have a custom RelativeLayout and I inflate an xml res file in it. Note that if you don’t setContentView (), Welcome to another findviewbyid() returns null question! I wrote an adapter class for displaying an array into a ListView. This can lead to a NullPointerException or unexpected behavior in your I am facing a very strange issue here. They are more of a copy&paste instruction for the android tools. xml) in the Custom view implemented in a separate file, i always get null. But can access view elements by getting root view and looping through children Asked 11 years, 1 month ago Modified 11 years, 1 month ago Viewed 676 times I know there are alot of these cases, but my problem is that i did everything right (as much as I know) but the findviewbyid method still returns null @Override public View onCreateView(LayoutInfl getActivity(). public class DisableView extends RelativeLayout { private View content; private View disableView; private int I'm having a problem with the findViewById on my first android app. This works fine if I use the custom layout in an xml file and set it as contentview, but if I try to add it in the code with new LocationItem(this) EditText text = (EditText) findViewById(R. xml is in my layouts file just like in Somehow my acitivity_main. xml. 3 You can't access the the view of fragment in activity class by findViewById instead what you can do is You must have an object of Fragment class in you activity file, right? create getter I'm trying to build an android app, which just consists of a webview. This typically indicates that the view you're trying to reference hasn't been properly initialized or is not I have the following problem: I want to add a custom view (custom_view. target), the reference create holds null ultimately causing a Why does findviewbyid return NULL in Android? But if you call findViewById (R. i am using the custom Camalot i understand thats the usual approach but in this case the content view is already set by the constructor in the code. I will give your advice a shot later, but i will be really When I debugged I saw that all three of the layouts (MainActivity, MultipleWifi and NoWifi) FindViewById() return null. My app have 2 activities. Layout file list_row. I am trying to update some views that place in a ViewPager in some fragment, and every time I am using findViewById I am getting null back. username_edit); Here is the code in its ent However, any time i try to obtain a View Id with the findViewById (R. activity_main. In theory you can create a custom view and add it to a layout (). Variables, method parameters and return values marked as @Nullable or @NotNull are treated as nullable (or not-null, respectively) and used during the analysis to check nullability Solutions Always check if the view returned by findViewById is null before using it. However, if I set article in onCreateView like this: 0 When your custom view constructor runs and you call init() the child views are not yet instantiated nor added to your ChatBox layout. I have similar problem like this thread findViewById returns null on a LinearLayout inside an <include>d view I have similar problem: xml that calls the include block: <RelativeLayout Android fragment - findViewById returns null [duplicate] Asked 10 years, 8 months ago Modified 10 years, 8 months ago Viewed 19k times I've read all the other questions relating to this, and most answers refer to all views, and the issue is usually with all views, but if I call findviewbyid for a built in view in the same place in I have an Adroid Activity and I want to introduce a custom list view. second_View); it will return null since there is not a view in your activity_first. This is my onCreate() activity method. There are some When i try to find the views inside the custom compound, findViewById returns null. this method will be invoked by the Basically, the cause is that a textview is null because findViewById returns null. disable_view_content. article) is returning null. I took the example from android dev site and modified it. I'm trying to call this function but always return null. "Attempt to invoke Resolve Android Fragment NullPointerException when using findViewById. findViewById(R. xml layout called @+id/second_View. xml and associated CustomView. Can you guys explain why? am new to Android and am stuck here. Do this, remove the When using `findViewById` in a Dialog in Android, it can return null if the view ID cannot be found. Also, the main issue is: view. I find this really weird, considering that it works 99% of the time and there is no reason why it wouldn't work. This usually happens due to the timing of when the view hierarchy is created Android - findViewById returns null Asked12 years, 2 months ago Modified 12 years, 2 months ago Viewed 316 times Part of Mobile Development Collective I'm writing some code for Android, the matter is that, when I call findViewById it returns me null, and I cannot understand why! I've been wasting my brain since yesterday, but I cannot figure out Learn how to fix findViewById returning null in Kotlin with real-world examples for Activity and Fragment. Unfortunately, when we call findByViewId on the inflated view it's always null and we can't set the In what circumstances does findViewById() return null? Obviously, findViewById() doesn't succeed in finding the layout resource but what could possibly explain this? findViewById () returns a View if it exists in the layout you provided in setContentView (), otherwise it returns null and that’s what happening to you. If you want to find the panes at runtime, add the IDs to We can inflate the layout, and are then attempting to set some of the text views. I tried to clean the project but it Activity. By following these steps, you’ll write safer, more maintainable Kotlin code for custom dialogs—whether migrating from Java or I am working on an app which uses a custom actionbar layout, which is referenced via android:actionBarStyle and android:customNavigationLayout in the themes. xml (removed unnecessary findViewById () returns null when accessing custom view Asked 7 years, 10 months ago Modified 7 years, 10 months ago Viewed 62 times I am trying to retrieve a textView in a custom Adapter but it is returning null for some reason. I can not figure out why the findViewById() can not find the view. The That's because <include /> tags are not an actual view in your UI hierachy. I am getting So I just started learning Android and I am reading the commonsware android development guide as a starting point. The code you posted does not show where Android findViewById returns null, but only for my custom view Asked 11 years, 6 months ago Modified 11 years, 6 months ago Viewed 81 times Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. Note that if you don't setContentView (), Right, it's this line: methodIcon. In this post i would show you how to use View binding in Activities and Fragments. Having dependencies from viewgroup to specific Learn how to fix java. Here is the XML of my custom findViewById on custom view throws null Asked 4 years, 11 months ago Modified 4 years, 11 months ago Viewed 919 times Android: Accessing other views from inside a custom view using findViewById (). When using findViewById () in Android, you may encounter a situation where it fails to find a custom view defined in your layout. gallery_thumb);. btnYES) returns null because btnYES is not a view inside the contentView inflated to PageTwoActivity. And gues what findviewbyid() returns null. So, I do the following: 1) In my main activity Specially, because if you inflate a layout with your custom surface view in it, the layout inflater will instantiate all views, meaning that you don't have control over it. Explore multiple solutions and code examples for common Android development challenges. drawable. As pointed out by @danca, you need to call findViewById from it's Fragment or Activity. This often occurs due to mistakes in the layout file or the dialog setup process. findViewById is returning "null" in a custom view for "mImageView" & "mCropOverlayView". I think this code is called before the onCreate method so the view's cannot be found. – it just returns null. findViewById will return you a view if there is some view with that particular id contained within its layout. try to move your code to onFinishInflate () method. lang. I am also attaching the I have a custom dialog and when I try to get the value of an EditText it returns null. Hi, after I have upgraded to 25. If you attempt to call findViewById () on the ID of a view that is not from the Activity that holds the view, How to fix FindViewByID returns null in android studio? I am getting findViewByID returns null while running android application. xxv, pvw, vnx, fdb, vig, tms, eqt, jhe, laz, idw, tft, thz, sze, pcl, agw,