Android redraw view not working. This is working as expected for the .

Android redraw view not working Aug 7, 2012 · In this Gallery every item i'm called updateDetails() method remove working fine. close and issue an adapter. why? i know that. They all might work in some particular contexts but it did not do the job in my case. setImageDrawable(Drawable. But as I call refresh on the list and I want to populate Adapter with new (totally different) list, after calling viewPager. but that does NOT solve my problem. When I click on the button I want to hide a view (another button) that is loaded in the FrameLayout. But after moved to another page and pull to refresh works fine. tried invalidate(); and this. From menu I invoke action that somehow process data in underlying db and change it. android:focusable="false" to your buttons and other focusable items. Feb 9, 2011 · I have my class implements Drawable. When the screen is rotated, its fine as onCreateView() is ran again, but I need it to refresh onResume. But my question is how do i redr Jan 25, 2012 · But the invalidate function in PuzzleView is not working. In my case, I had not, and the definition of areContentsTheSame only checked one of I working on messaging platform like whatsup. getName(); Fragment fragment=fragMgr Jun 20, 2012 · I am not trying to update the data in the list, I am trying to update the look of the list. When ı send message ı must update the screen because ı am getting data in db. Creating a new adapter solved the issue. please help . note: if i'm without remove view added previousList + currentList added. The code snippet I'm using is as follows: let container2 = context. If you have a chance to look at getView method you will see that convertView is created just once. Oct 20, 2016 · I implemented one horizontal-scroll item listview using RecyclerView inside scrollview. 2" dataBinding { enabled = true } defaultConfig { applicationId "com. I tried also to call gardenCalendar. I DO NOT want to use Activity. notifyDataSetChanged(); it did not work. notifyDataSetChanged(), PagerAdapter stops working properly and those items are blank pages Android does NOT refresh layout of views with "wrap_content" once it has been displayed. getSupportFragmentManager(); FragmentTransaction fragmentTransaction = manager. Still, it sounds quite strange that to have a list scroll to a specific element one must directly fiddle with focus. schedule to schedule invalidateSelf() but nothing happend. May 26, 2020 · I have custom ViewPager and PagerAdapter which is loading items inside instantiateItem. May I get some advice or alternative solution? I simply want the button r Feb 13, 2018 · i'm struggling with this for a while, not sure if because almost 2 years of absence in Android DEV or my stupidity, I've tried everything and just cannot redraw my screen even if invalidate() is happening. I have set this content in onCreate method of my Main Activity, but such changes didn't apply to my imageview. You can only set the user name to the related textview and dismiss dialog fragment. You can read more here(http://developer. beginTransaction(); ft. Feb 5, 2011 · I too have tried invalidate(), invalidateViews(), notifyDataSetChanged(). I want to update the item when user swipe to the end of the listview (item is added after refreshing). invalidate(); with no luck. GONE means only, that the view is not taking any space in the layout, INVISBLE means, the view takes space eg. private class DrawableI Aug 1, 2016 · I have made a customized imageview with some editing for length and height size in onMeasure() in the view class. Apr 5, 2011 · if you have textviews, buttons or stg clickable or selectable in your row view only. But it will be worked when directly using setContentView(PuzzleView) in main class. It is working fine if I initialize it for the first time with set list of items. Jan 29, 2017 · let me first start with showing the code: build. Jan 25, 2017 · You should not call invalidateViews and setAdapter to refresh your grid view. Any suggestions that I can understand would be great. Jul 20, 2014 · This view must be scrollable, such a ScrollView or a ListView. Jan 26, 2023 · When an app is just launched and the first web page loaded, pull to refresh calls refreshWebView function, but keeps showing a loading indicator and does not load the web page. I tried using notifydatasetchanged() but didn't work. html), but: "To force a view to draw, call invalidate(). I need to redraw it periodicaly to get some "blink" effect. I have selected one of x pages that are available to scroll through in ViewPager. 2 sometimes the webView will not draw its contents after the data has loaded. attach(frg); ft. You can also do a manual invalidate call ever x ms like so /** * Due to bug in 4. Jul 12, 2015 · I am trying to figure out what is the issue with updating RecyclerView's Adapter. commit(); May 18, 2012 · If you implement a custom view, you will need to call invalidate() whenever the backing model changes and you need to redraw your view. 1. Aug 9, 2022 · You can see, only the numbers changed in the Bars, but nothing happens, the View has the old values and did not redraw. – Katherine99 Why isn't view. imgView. 1. I am using timer. com/reference/android/view/View. If i try to scroll to the top now - the Pull-To-Refresh triggers. Apr 23, 2013 · Hi Triode, I load all the database values in the screen and the activity is not crashing. " Note, also that you can invalidate only parts of a view Jun 21, 2012 · This wouldn't work because invalidate() only schedules a redraw in the main thread event queue. This is the Layout of my Main Activity: <android. support. Jan 29, 2014 · The graph is drawn on a linear layout using some library. below is code snipet : After this, I would like to refresh my currently displayed fragment's view to display with new locale settings. It just saved me some hours of confusion with regards to ImageView refresh. Depending on what you need to do, it might have alternatives. i want the linear layout to redraw the new function requested by the user everytime the user clicks the draw button. does NOT work . In my case I was invalidating a container (a ConstraintLayout) but the view inside it didn't get redrawn until I called postInvalidate() (from a service thread) directly on the view. In my case, I wanted an image refresh on locale update but, apparently, it seems that, since the resId does not change, the ImageView just disregards your request, not checking if the resource itself has changed. Jul 14, 2016 · I'm using a SwipeRefreshLayout with a RecyclerView, both in a Fragment. View. is there any way to resolve this? Jun 3, 2015 · This does not work for me. This must be called from a UI thread. A neat trick if you want to redraw only one view from your adapter is to call getView manually for it if its position is visible - i. Apparently, notifyDataSetChanged() is only to be used if you are adding / removing items. I have a fragment that inflates an xml layout. When the user navigates back to the Activity. * Triggers redraw. May 23, 2021 · Have you ever faced the problem in the android studio that it is not showing the layout preview while you are constructing a layout for your project? If yes, then this article will help you to solve this problem. For a simple rotation a Tween Animation would be better suited. you get current LayoutParams of a View and you modify them, but NOT call either requestLayout or setLayoutParams (which calls requestLayout internally), then you can call invalidate() as much as you want, and the View will not go through the measure-layout process, therefore will not change its size. redraw(); T Here I go answering my own question with a hackaround that I've settled on. I personally developed a widget that play sprite animation, not that mature but the idea is to compose and swap the appearance using "setBitmap". Thanks Happy Coding Jan 25, 2017 · You should not call invalidateViews and setAdapter to refresh your grid view. I feel the same as you. INVISIBLE makes the view just invisible still taking up space. Closed at #2735 but does not work. java. Jan 15, 2019 · Update recycler view content without refreshing the data. setText(name); } I want to use window. This means that the redraw will be performed only when the current code has all been executed (in this case, the for cycle). When there's some data, swipe-to-refresh is working. detach(fragment); fragmentTransaction Mar 13, 2015 · I'm working with Android's new RecyclerView but I can't get my custom adapter to refresh whenever I call one of the "notify" methods. To strictly answer the question: Use invalidate (): public void invalidate () Since: API Level 1. I think you want to refresh the fragment contents upon db update. Showing information in a list, or a set of Today we will learn how to redraw View! The so-called redrawing is to redraw its appearance (style). gradle (module): android { compileSdkVersion 24 buildToolsVersion "24. When you call notifyDataChanged, it will update Apr 9, 2018 · This function (potentially) does not do what it says on the label: it does not compare the contents of the two items - unless you have overridden the equals() function in the Artist class. While clearing the cache will not remove Feb 21, 2013 · How can I refresh my View to update? The reason I want to do this is because I have an ImageButton that will only be displayed if a certain condition is true. . 0. But id doesn't update! I tried using "invalidate()" and "postInvalidate()" but they doesn't work! Here is the code of RadarView: `public class RadarView extends View In my android app, I download an image from the cloud. getName(); Fragment fragment=fragMgr Nov 30, 2017 · I am retrieving data from mysqli database into android recycler view through volley string request. Jun 8, 2018 · For certain user inputs (touch events), it happens that one element in the ListView calls invalidate() on itself. I have tried using layout. extends View. If so, detach the fragment and reattach it // Reload current fragment Fragment frg = null; frg = getSupportFragmentManager(). reload( true )"); to reload a webview but can't get it to perform. the problem is that even the database gets updated, the UI doesn not refresh with the new values. SwipeRefreshLayout not working on android version 22 and down. g. My question is basically the same as How to force a view to redraw immediately before the next line of code is executed , but unlike this question I don't need to change background So for now I'll be using onCreate(null) to refresh my view when I update data. view. android:descendantFocusability="blocksDescendants" is not enough. The RecyclerView won't scroll down. Here's the code for my custom adapter. View has two very important methods: invalidate and requestLayout, which are often used for View redrawing and updating. That is the main class xml that contains view doesn't refresh. To call from a non-UI thread, call postInvalidate (). loadUrl("Javascript:window. 0: This is my code : FragmentManager manager = getActivity(). If you're extending a ViewGroup (in your case a RelativeLayout) you should override dispatchDraw() instead of onDraw(). This data is sent to a RecyclerView. The Jun 11, 2014 · Thanks to pskink I was able to create complete solutions so here is it. My app is fragment based using the support library. If i try and remove the Swipe-Refresh-Layout around the Recycler-View the Problem is gone. Step 7: If Smart View is still not working, tap on Clear data in step 5. invalidate will make for an unhappy battery / app performance will drop. The problem is that sometimes, the element then redraws itself and sometimes not. e. If use listview, cursor adapter and content provider you might try something along the lines: gettLoaderManager(). adapter?. location. After setting the image, I then call postinvalidate(). Jul 6, 2016 · My target is do redraw view on language change. While debugging, I realized that the data was there but just not Aug 24, 2021 · I have added pull to refresh inside web view using scroll view. my_view); myView. This is the code in custom List View adapter Sep 9, 2012 · I create my own View (RadarView), extending View. Jul 20, 2012 · I have searched but cant find a solution to my problem. please suggest correct way The view to give focus to on the last line of run() might be some other view, not necessarily the same ListView you selected, I think. getControl('SectionedTable0'); container2. is there any way to resolve this? Feb 12, 2010 · Once again: notifyDataSetChanged() does not work at least not for use practices which are recomended (read not deprecated). Accessing the current view by getView() does not work as this function returns null; it seems that after the fragment is created (on ViewCreated is called) getView gets destroyed. What I need to do is set a random theme and then have all other views adopt this theme. Again, please let me know if this is unsafe or a bad practice and if possible a working alternative. 2. VISIBLE); But the view doesn't become visible. Here is my code After this, I would like to refresh my currently displayed fragment's view to display with new locale settings. notifyDataSetChanged()? Jan 5, 2013 · runOnUiThread(() -> view. Here's some code: GameActivity. The download is performed in a thread and in that same thread I also set an image view with the newly downloaded image. onDraw() and calling View. Maybe calling the invalidate() method of the view will help. Issue is, i'm not able to do swipe-to-refesh in LazyVerticalGrid if there's no data, but same is working in LazyColumn (both case has NoContentView shown). invalidate()); or. widget. If the view is visible, onDraw (Canvas) will be called at some point in the future. the place for the view is just empty, but taken. While clearing the cache will not remove Jun 27, 2011 · when a user selects a menu option, I catch it in onMenuItemSelected and then call findViewById(R. because I want to set the image with an uri independenty if this come from a resource or come from the camera ACTION_PICK intent Oct 9, 2016 · I am using Android Studio latest version and recently facing a problem that, my layout xml Design view not getting updated rapidly if I have changed background from selector resource or changed the image resource background. invalidate(); Aug 23, 2014 · However, if I remove the character in the same method that I create and share the image, the app crashes because it didn't get a chance to redraw the view first. The d Dec 18, 2024 · Hello SAP Community, I'm currently working on an MDK (Mobile Development Kit) application and facing an issue with redrawing a sectioned table on an Android device. You are first using GONE and then INVISIBLE on the same view. GONE makes the view invisible without the view taking up space in the layout. getBackStackEntryCount()-1); String str=latestEntry. Invalidate the whole view. Jan 3, 2011 · Finally, Google released an official version of the pull-to-refresh library! It is called SwipeRefreshLayout, inside the support library, and the documentation is here:. And its reproducable on any Phone (not only L-Preview devices). As you can see from the above sentence, the invalidate method will execute the draw process and redraw the View tree. Firstly, all data is displayed fine. Custom view attribute wrap_content not work. Wrap content not working. recreate() and I have already tried: View myView = (View)findViewById(R. I have looked over this site loads and found nothing but "use notifyDataSetChanged()" which doesn't work. getView(). notifyDataSetChanged(); that also not working. Calling onDraw shouldn't change the state of the view, rather that should draw your state of the view. Thank you. As it is you can force to call the onDraw but not stopping of calling. First, create a new android project, we define a class, and inherit View, the class name is: DrawView: May 1, 2013 · So my question is when I click on the button, the GridView is not updating itself and when I close the application and open it again it gets updated. Sep 27, 2012 · Everything works ok (activity / current fragment communication) except the fact that I cannot refresh the fragment's view. invalidate(); with no success Mar 7, 2012 · I've some database that i update with a service, and i want to update my listView on resume, or refresh it from time to time with the new data in it, but it's not working. Is this the best way to refresh the data set, or should I look towards removing the . But my project is little big and its taking some time to rebuild Aug 7, 2014 · When scrolling the list back to the top sometimes the view on the top gets cut in. I have successfully detach and attach current fragment, but drawer items are not translated. Jun 3, 2015 · This does not work for me. I think the problem is not that the view isn't redrawing, it's that past a certain size, the display runs out of color steps, causing visible banding. When i press send button ı must update View. aging i'm trying to add new list in that linearlLayout not added. Jan 20, 2011 · @bigstones: It's just android:dither in XML. v4. :) Here is the java code: packag The code to reload the view of a fragment was not working anymore after updating to the new version of Support Library 25. restartLoader(). setVisibility(View. However, when I try to refresh it, the data no-longer shows. Jan 25, 2022 · If there's no content in paging data, i'm showing empty state view. invalidate() but this is not working in my app. 2. After I get a new List of products, I tried to: Update the ArrayList from the fragment where recyclerView is created, set new data to adapter, and then call adapter. With this however, everytime I need to refresh the data set, I need to keep running this block of code (which gets a bit difficult inside an onClick() for a button due to "this" not being available. My requirement is to update the text size on all my views inside my fragment when my Activity is resumed. when you have multiple rows and each one updates independently from the others. – Opiatefuchs Commented Sep 23, 2015 at 10:53 As pointed out above and elsewhere - overriding View. DrawerLayout Jun 14, 2016 · If you only need to update the data which user inputs from your dialog you do not have to redraw whole layout. Just to be sure that we are on same page. Apr 7, 2012 · Do you have any other view also in the same layout, and are you doing any changing to them?. Below I include the XML code for the drawer. android. In case of any layout changes also onDraw will be called. TextView yourNameTextView = (TextView)findViewById(R. getPageProxy(). I found that Rebuild Project again updating the layout. You have to set . Apr 20, 2014 · Borrowing from the link @ Android Custom Layout - onDraw() never gets called. Add SwipeRefreshLayout as a parent of view which will be treated as a pull to refresh the layout. Swipe to refresh layout not Android does NOT refresh layout of views with "wrap_content" once it has been displayed. createFromStream( getContentResolver(). onCreate Nov 23, 2016 · To refresh your fragment, there is many way to do it: you could implement a listener interface of your own in it to tell it when to refresh, or simply call a method that you would implement to update your contents. postInvalidate(); Also note that redrawing a container might not redraw all of its views. I added the notifyDataSetChanged to the main activity's on create method but when ever an item Is added the recycler view doesn't refresh. I googled but ı can not exact Feb 10, 2021 · refresh does workout but scroll is not working. Am I missing something here? Today we will learn how to redraw View! The so-called redrawing is to redraw its appearance (style). Jun 20, 2012 · I am not trying to update the data in the list, I am trying to update the look of the list. 0. I have looked EVERYWHERE and my little brain just can't understand a better way to refresh an activity. If you are updating information about items that are already displayed, you might end up with visible items not updating their visual appearance (getView() not being called on your adapter). It can also be used to create simple animations, where you change state, then call invalidate(), change state again, etc. detach(fragment); fragmentTransaction Mar 28, 2014 · Basically I have a drawer with a button in it. I have a PreferenceActivity where I allow the user to set the colors they would like for the text in a list (the adapter reads the preference and sets the colors). getBackStackEntryAt(fragMgr. findFragmentByTag("Your_Fragment_TAG"); final FragmentTransaction ft = getSupportFragmentManager(). If you want to create custom view in which have to be your custom drawings for different touch states (pressed, selected, focused etc. This is not a good idea to keep your grid view updated, if you update in that way it would cost a lot of time and memory. Following is my Custom GifLoader java code Thank you both for this. id. your_textview); public void setNameToTextView(String name){ yourNameTextView. openInputStream(imgUri), null)); work. I now have a View that is added programically after the onCreate (Depending on some other variables). I want the recycler view to refresh when ever an item Is added without having to do a manual refresh. Is there a way to make the redraw happen immediately? Jul 24, 2013 · notifyDataSetChanged() will redraw all views in your adapter. beginTransaction(); fragmentTransaction. I'm basically trying to refresh a list of Strings: Mar 28, 2014 · Basically I have a drawer with a button in it. This issue causes on Android 13, 12, 11, and maybe other versions. Oct 26, 2024 · In Android development, when you add a new view to a ViewGroup (such as a LinearLayout), you need to ensure that the layout and visual representation of the UI are updated to reflect this change. Ok. I tried fragment. So, I firstly get the current fragment (that's the latest one in backstack ): BackStackEntry latestEntry=fragMgr. Feb 22, 2015 · RecyclerView always holds the last position scrolled, therefore you don't have to store last position, just call notifydatasetchanged, recycler view always refresh data without going to top. ) and you didn't know whether this view will be placed inside other View that can intercept touch events or the view structure is even more difficult. However when i remove contentContainerStyle={{flex: 1}} scroll start working but refresh control does not work then. Try the below it works. When it does not redraw itself after invalidate() has been called, I need to scroll the ListView in order to get the desired redraw. android:textIsSelectable="false" to your textviews and . Is there any solution that I can redraw my imageview in onResume method? Thus all my changes in onMeasure() in view class Jul 18, 2016 · Whenever I do background work, I set GIF View visibility to ON and set its visibility to gone when work is done. Here is my code (the code in comment is not working and sometimes make the app crash) Nov 15, 2016 · In my application I receive some data from a web server. I also tried to call init with context, but then the whole View disappeared and did not redraw. Since it is necessary to redraw, you must first inherit the View class. Anyway, that's what I needed to do, and seems to work. display empty data. Apr 25, 2013 · The problem I am having is that the ArrayAdapter does not refresh on resume. Since, the code is executed sequentially, first the view becomes GONE then it is overridden by the INVISIBLE type still taking up space. However the image does not immediately show up. Oct 31, 2010 · @Chris. This is working as expected for the Sep 3, 2024 · Step 6: Restart your phone and try using Smart View to connect to the TV. It is working but the condition is that pull to refresh should only work when we are at the top of the page inside web view. This is the code I have in my onResume method but it does not do anything. I've tried calling notifyDataSetChanged, notifyItemRangeInserted and notifyItemInserted and none of them seem to work. xyz). Avoid graphical glitches by modifying specific ViewHolder items without redrawing them. Everything works as it should and it draws part of a circle. invalidate immediately redrawing the screen in my android game 1 When invalidate method called on an array of Views, the first View is not redrawn Dec 13, 2012 · (2/2): If you change the size of your View in some way, e. In my case, I had to add some new rows to the list and it just does not work. detach(frg); ft. mwqkov zscb codomv yyna lbzddho lai rjyg utxk oqx grdmrvy aioti fkast rjtes dylvx vxehh