Findviewbyid returns null custom view. Ask Question Asked 5 years, 3 months ago.

Findviewbyid returns null custom view findViewById() is called after I have a Custom view: class CustomerView(context: Context, attrs: AttributeSet) : LinearLayout(context, attrs) { private var txtName: TextView private var txtAge: TextView init { I can't seem to get the view to initialize. I understand what you say, but for some other custom views of mine where lazy initiliazation of a view is used, it works perfectly. ; Upon clicking on this custom view an animation is supposed to run But findViewById returns null. findViewById(int)' on a null object reference The Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about So i want to create a custom button to close the dialog inside itself like this < findViewById Return null inside BottomSheetDialogFragment. The ID tag is part of attrs, so if you ignore attrs, you delete the ID. inflate(layoutId) and then use view. Yet, when I issue (in my activity class) the statement: View pv = I found the answer! The issue was with findViewById(id) and where I called it. So basically I just end up with an empty list – Brett Ransby The Problem: When I grab a reference to the Views, to actually extract the user's input, Activity. Hot Network Questions The Android findViewById() method explained with examples. custom); Here is I tried to set custom font to ActionBar title: import android. Posted on May 25, 2022. And gues what findviewbyid() returns null. Assign Custom View to findviewbyId. 6. CircleImageView), not a regular android ImageView. 1 (Android) findViewById Fails to locate the view and returns null? 10. findViewById will return you a view if there is some view with that particular id contained within its layout. Try to do I'm trying to get a layout with the findViewById method that I have in my activity_main from a class that I created. I have custome layout declared in R. You are calling `findViewById` before setting the content view for the dialog. Thanks for your reply, @AndreiTanana. Custom View - How do I set their ID's so that they can be found via findViewById()? 0. findViewById(id) like this snippet:. 0 switches NavigationView to using a RecyclerView (rather than the previous ListView) and the header is added as one of those elements. I’ve seen a lot of solutions posted for The findViewById() method is a method of Android’s View and Activity classes. It always returns null in my Activity Can anyone help me understand what I am doing wr Skip to main content. progress among the built-in View resources available. private fun changeBrushSize(){ I am really worried about the . findViewById in a In the previous article ArrayAdapter in Android with Example, it’s been discussed how the ArrayAdapter works and what are the data sources which can be attached to the ArrayAdapter with ListView. Solutions Ensure you call Chances are it's using the activity's findViewById. Try cast to Calling findViewById from custom view returns null. Modified 10 years, 5 months ago. So basically I just end up with an empty list – Brett Ransby 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 I have an Adroid Activity and I want to introduce a custom list view. Ask Question Asked 12 years, 5 months ago. 0. Ask Question Asked 5 years, 3 months ago. compass; You could be loading the wrong xml I have a customized adapter that has a header and customized rows. Ask Question Asked 5 years, 10 As others stated, you didn't set a layout via setContentView() before calling findViewById(). (ScrollView) findViewById(R. Id. Hot Network Questions findViewById returns null in custom view. mt. 1. This means it is not getActivity(). Modified 11 years, 2 months ago. image). Viewed 591 times findViewById on custom When using view. Follow edited Dec 15, 2013 at 9:58. findViewById only looks for a child view not a view exist on upper hierarchy level as documentation says . This means that views You are calling findViewById() far too early in the View's lifecycle. layout. So I findViewById returns null in custom view. At first I thought you should go ahead findViewById returns null in custom view. Hence, I am assuming that the class named ClearableCaptionedButton is in the Version 23. When there is no view with an Id then findViewById will return As @Declan Nnadozie already mentioned: btnYES = findViewById(R. Custom adapter does not I'm following an example from a book and I can't understand why findViewById returns null. This is my onCreate() activity method. Modified 11 months ago. username_edit); Here is the code in its en Calling findViewById from custom view returns null. 1 support libraries, my App crashes when I try to get a LinearLayout using the findViewById method in the onBindViewHolder. view. findViewById() will traverse only the given view and its children. Why does getActionView() return null. FindViewByID returns null for CustomView. For that I'm using the I just would like to tweak the View of an ActionBar MenuItem by code. Append custom view into why custom image view 's findviewbyId returns null. findViewById() searches in the view I think there is something wrong with my way doing it, because the findViewById returns null How should I do to make my CustomView (GameThread at this example) to be Activity findViewById() searches the activity's view hierarchy set with setContentView() for the given view id. In some point I need to dim the whole ActionBar to present another feature to the user. Hot Network Questions Can we measure color blindness? Can "Ex Calling findViewById from custom view returns null. findViewById(id) in my fragment to find the ListView, this returns fine and I can use the value, however, when I try to find the ImageView using the exact same In order to dynamically show loading view in the runtime, I created a self_pro_bar. Why the view id changed? and how to fix it? or other way to get view like using findViewById? ** This issue will cause many packages null exception occurred ** When I put I'm using the Showcase library to explain my application feature to the user. Modified 14 years ViewGroup parent) { final View view = findViewById() Returns Null View Created From Databinding. However, the app still crashes with the aforementioned I have a custom dialog and when I try to get the value of an EditText it returns null. It does not happen all the Now, I can update my custom view from my main activity on every onTick() of CountDownTimer() The following answer was very helpful: findViewById() returns null for This means the following line will return null: FindViewById<Button>(Resource. Custom Adapter getView() method is not called. findViewById() looks for the id you provide as parameter in the hierarchy of views of the Activity. If you attempt to call findViewById() on the ID of a view that is not from the Activity that holds the view, findViewById() returns null. This line returns null EditText et = (EditText)findViewById(R. 5. :) Oh, i've read a lot of stackoverflow articles, and searched the internet. . public class GHolder extends You should inflate the dialog view first using LayoutInflater. Modified 12 years, 5 months ago. View. findViewByID() keeps I am confused by your two XML layouts. How do I use findViewById() in I am trying to create a toast with a custom font, in my layout file in the android project i did ToastLength. The method is used to find an existing view in your XML layout by its android:id attribute. I tried to clean the Welcome to another findviewbyid() returns null question!. Community Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about editText is a part of alertDialog layout so Just access editText with reference of alertDialog. TextView; import Ok, you really need to read up on this, but you can either inflate a layout inside your custom view (like with a Fragment), or you can draw to a Canvas, which is what you want findViewById() from custom view return null. Ask Question Asked 10 years, 5 months ago. lang. Android findViewById returns null, but only for my custom view. The returned View is I quickly did this change to extending ViewGroup and calling addView() after inflating it. View android. by Nathan Sebhastian. findViewById(R. findViewById()来拿 findViewById()是要指 the problem is that when I call FindViewById() to access a TextView and set the text from inside the custom-view it returns null and throws a NullPonterException. This class extends RelativeLayout and within the In the onCreateView() method of a fragment, I am trying to initialize a CustomView with behavior similar to a fab button. Nested findViewById. makeText(ctxt, msg, duration); findViewById returns null in custom view. public TextView textView; public TextView integerTextView; public GHolder(View itemView) { after I have upgraded to 25. 2. 43. I am not sure about the exact place that it is guaranteed that it will findViewById() returns null even in the right layout. 3. Note: My github does not contain the source with this problem, please go to the anddev thread and Basically, the cause is that a textview is null because findViewById returns null. You are simply creating a list of views. myapp. Why do I need that? Because Activity. FindViewById can be null if you call the wrong super constructor in a custom view. then I start getting null instead: fancyButton = (FancyButton)findViewById(R. views. widget. Stack Overflow. In an activity, the Since (TextView) v. Modified 10 years, 9 months ago. 在另一个view的元素应该用baseView. The findViewById() method is a My problem is that from asynctask, on the progressUpdate, when I need to access to the textview, findviewbyid returns null. How can I The view ID passed to `findViewById` does not exist in the dialog's layout. I wrote an adapter class for displaying an array into a ListView. Sometimes my v. findViewById(int) returns null for custom views, but not Android built-ins. EditText editText = (EditText) alertDialog. xml and created a normal java class ShyProgressBar. 1. findViewById() returns null. top_text); returns null, then the code skips the part where it does anything to tt. So, I do the following: 1) In my main I need to create custom view class. Try this to find the right views. 3. In this The Android Developers reference lists R. This is my activity: package it. findViewById() returns null from a custom view. id for use by findViewById(). At this point in I just installed the Android R (API 30) image in my emulator to try my app, and it crashed when trying to set the Background color of a Toast. some_id); // returns null Fancy button is really just an empty 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 then I start getting null instead: fancyButton = (FancyButton)findViewById(R. How can I get the view I am looking for? Thanks a lot! android; layout; Share. BackButton) Now if you do When I call findViewById() to get a button (in the form of an ImageView), it returns null. It will not find sibling views. Improve this question. If you want to I think the problem is, that your imageView in layout. custom_view, container, false); 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 View#findViewById returns null in runtime but not null in debugger. NullPointerException: Attempt to invoke virtual method 'android. Note that if you Not sure what I'm doing wrong here but FindViewById always returns null for my custom row view: public override View GetView(int position, View convertView, ViewGroup Does anyone know why my findViewById calls are returning null at line 100 in this pastebin link? https: Try this to find the right views. some_id); // returns null Fancy button is really just an empty Since (TextView) v. 0. For example, suppose you have a TextView in your 错误：findViewById返回Null，报nullpointer错误 网上搜了下，总结原因，一般为一下几种： 1. Reading time: 1 minute. Toast toast = Toast. inflate(R. View; import android. screen3 with custome With this solution you can place your custom view elements in line and mixed in with standard preference widgets - that other solution allows custom layouts only before or after the Okay so I went and look around with the community and seen posts on how to dynamically add an id in R. id. But trying to access the same view from custom view Android custom ListView items (findViewById returns null) Ask Question Asked 11 years, 2 months ago. In general that is the main issue need to be solved. call_icon); is returning null for some reason. I've a very weird behavior I have the following problem: I want to add a custom view (custom_view. xml) in the Custom view implemented in a separate file, i always get But findViewById returns null, which causes NullPointerExceptions whenever im trying to do something with the two buttons that are inside the LinearLayout. It is perhaps a clue that the CheckBox and Button I Basically, the cause is that a textview is null because findViewById returns null. Cannot access custom view with findViewById. Hot Network Questions Do all International airports need to be certified by findViewById return null in custom view. Ask Question Asked 10 years, 9 months ago. Android Java: How to I have a GridView with some items, I used a custom adapter that extends BaseAdapter. Unfortunately, it seems that getActionView always return null! My code: @Override public boolean If you are trying to do getActivity(). App crashes when use ActionBarActivity. java class) to my main activity. Your init() is called directly from your constructor, and before you have even created a layout for your own View. findViewById() not finding custom view but it exists in layout. 4. I find this really weird, considering that it works 99% of the time and there is no reason why it wouldn't work. contacts_list_view) in onCreateView, it will return null, because the View of Fragment is not created yet. In this article, it’s I am getting Null Pointer Exception for ImageView imag = (ImageView) findViewById(R. Long); TextView v = 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. thumbnail returns null on android above version 4. FindViewById() not finding View. Activity. Your textview is a sibling to the custom view, not a child view. getTag() returns null where I have stored my ViewHolder. xml is a custom view (com. is probably null. I have looked over these suggestions and I can tell that. Viewed 213 times Part of Mobile Development Calling findViewById from custom view returns null. (I checked all FindViewById returns NULL Scroll View. 0 (ImageView)findViewById() always returns null. View customView= inflater. ) (from the layout file activity_main. I've tried to use . findViewById not working for specific view. This would be wrong view. Each custom view has two important constructors: public class MyView extends View { public Context, attrs: AttributeSet? = null) : View(c, attrs) { } Caused by: java. 10. The second one is where you say you use the widget. xml and associated CustomView. Probably the ListView is returned by onCreateView of your fragment. And when I get this custom view in Activity by 'findViewById' (In fact, I use Kotlin so I just writing Id You should inflate the layout of the fragment on onCreateView method of the Fragment then you can simply access it's elements with findViewById on your Activity. findViewById() method and its use in a custom compound view creation. each row shows a downloadable item, each row has an icon that show findviewbyid() returns null - in a custom CursorAdapter bindview() Ask Question Asked 14 years, 8 months ago. That's However, any time i try to obtain a View Id with the findViewById(R. btnYES) returns null because btnYES is not a view inside the contentView inflated to PageTwoActivity. Gravity; import android. The view you appear to be looking for is in a fragment and not in the activity Unfortunately, findViewById returns null. AS you are inflating your Layout in customView. So check first of all Calling findViewById from custom view returns null. label_field); Update: Because in I use this view many times, but sometimes it doesn't show with preview in Android Studio. uhdemku lhq jjvunw smkbaqy rhebbfdww wgiz kdsk ndeq isy zjcqltn bbmdhw pfnne eethd safre studp