# Juce 7 cannot create filebrowser in AUV3 on iOS **URL:** \ **Category:** Audio Plugins\ **Created:** [August 11, 2022, 5:15pm UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571 "2022-08-11T17:15:17Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![leehu](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/leehu/32/3280_2.png) [@leehu](https://forum.juce.com/u/leehu)\ **Post date:** [August 11, 2022, 5:15pm UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/1 "2022-08-11T17:15:18Z")
Hi, trying to launch a filebrowser seems to launch the browser (i.e. ui disabled) but there’s no actual browser visible. Just pulled 6.1.6 and the code works fine. thx ---
**Author:** ![ttg](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/ttg/32/14456_2.png) [@ttg](https://forum.juce.com/u/ttg)\ **Post date:** [August 13, 2022, 7:30am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/2 "2022-08-13T07:30:34Z")
Hi, I’m afraid I’m also being able to reproduce this. same code worked for me and seems broken with latest develop. This is how my FileChooser is constructed. ```auto fileChooser ("Import Preset", juce::File::getSpecialLocation (juce::File::userDocumentsDirectory), "*" + juce::String (kPresetExtension), Utils::usePlatformDialog() #if JUCE_IOS , false, getTopLevelComponent() // AUv3 Sandbox requirement #endif ) ``` As leehu, also for me the UI ‘freeze’ on GarageBand. Exact same code works in Standalone and also worked with JUCE 6.0.x builds. ---
**Author:** ![ttg](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/ttg/32/14456_2.png) [@ttg](https://forum.juce.com/u/ttg)\ **Post date:** [August 13, 2022, 6:12pm UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/3 "2022-08-13T18:12:33Z")
I’ve bisected this, That’s the faulty commit - > > > This restores the functionality of JUCE\_COREGRAPHICS\_RENDER\_WITH\_MULTIPLE\_PAINT\_…CALLS. > Using this preprocessor flag may avoid Core Graphics rendering much larger regions than > necessary, but the small regions that are rendered will likely be rendered slower. > Whether using this flag improves or degrades the performance of your rendering overall > will be specific to each application. > > Previously enabling JUCE\_COREGRAPHICS\_RENDER\_WITH\_MULTIPLE\_PAINT\_CALLS was ineffective > from versions of macOS around 10.13, but enabling it didn't have any negative impact on > performance. Now enabling JUCE\_COREGRAPHICS\_RENDER\_WITH\_MULTIPLE\_PAINT\_CALLS may result > in slower rendering. Note: Standalone still works, only AUv3 is broken. Additional Observations: - I’ve also tried with OpenGL renderer (though I didn’t sanity check myself) and had the same behavior - Even without `JUCE_COREGRAPHICS_RENDER_WITH_MULTIPLE_PAINT_CALLS` this behaviour is reproduced. So it’s not the `CAMetalLayer` specifically? ---
**Author:** ![ttg](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/ttg/32/14456_2.png) [@ttg](https://forum.juce.com/u/ttg)\ **Post date:** [August 14, 2022, 4:36am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/4 "2022-08-14T04:36:33Z")
I’ve found it, If anyone else can confirm. On `juce_ios_UIVIewComponentPeer.mm` change this (private decl to public). ```auto class UIViewComponentPeer : public ComponentPeer, private UIViewPeerControllerReceiver ``` to this ```auto class UIViewComponentPeer : public ComponentPeer, public UIViewPeerControllerReceiver ``` ---
**Author:** ![playpm](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/playpm/32/14429_2.png) [@playpm](https://forum.juce.com/u/playpm)\ **Post date:** [August 16, 2022, 5:55am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/5 "2022-08-16T05:55:44Z")
I got the same issue, even after I revert back to juce 6.0.4, my iPad is on the latest iOS 15.6, hope this can be fixed soon. ---
**Author:** ![leehu](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/leehu/32/3280_2.png) [@leehu](https://forum.juce.com/u/leehu)\ **Post date:** [August 16, 2022, 9:30am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/6 "2022-08-16T09:30:00Z")
I’ll try check this out today ---
**Author:** ![playpm](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/playpm/32/14429_2.png) [@playpm](https://forum.juce.com/u/playpm)\ **Post date:** [August 18, 2022, 6:10am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/8 "2022-08-18T06:10:35Z")
Although the file browser dialog on iOS standalone works, but after I selected a supported audio file, it won’t get loaded, no sound on iOS, but all of my functions work under Mac and PC, I already used URL to use a file on iOS, it’s really weird. ---
**Author:** ![playpm](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/playpm/32/14429_2.png) [@playpm](https://forum.juce.com/u/playpm)\ **Post date:** [August 18, 2022, 6:12am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/9 "2022-08-18T06:12:17Z")
Btw this is my code incase I did it wrong, I use browseForFileToOpen() to open the file chooser dialog window, it can open dialog in Mac/PC/iOS standalone, but will freeze in iOS AUv3. ```auto std::unique_ptr chooser; chooser = std::make_unique ( "Choose a file", juce::File(), audioProcessor.getFormatManager().getWildcardForAllFormats(), true, false, #if JUCE_IOS this #else getTopLevelComponent() #endif ); if (chooser->browseForFileToOpen()) { auto fileURL = chooser->getURLResult(); audioProcessor.loadFile(fileURL); } ``` ---
**Author:** ![ttg](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/ttg/32/14456_2.png) [@ttg](https://forum.juce.com/u/ttg)\ **Post date:** [August 18, 2022, 6:40am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/10 "2022-08-18T06:40:20Z")
> [@playpm](#): > > `audioProcessor.getFormatManager().getWildcardForAllFormats()` This line is suspicious. Try other wild cards. iOS is very picky. Yet would be nice if JUCE team could push the fix for post metal commit changes ---
**Author:** ![playpm](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/playpm/32/14429_2.png) [@playpm](https://forum.juce.com/u/playpm)\ **Post date:** [August 18, 2022, 6:44am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/11 "2022-08-18T06:44:53Z")
Ok, this is trying to get all the supported audio file type, this line works in iOS standalone pretty well, will grey out those not supported files. I really don’t know another way to do this, any suggestions? ---
**Author:** ![leehu](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/leehu/32/3280_2.png) [@leehu](https://forum.juce.com/u/leehu)\ **Post date:** [August 18, 2022, 7:42am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/12 "2022-08-18T07:42:48Z")
@ttg works - nice find! ---
**Author:** ![playpm](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/playpm/32/14429_2.png) [@playpm](https://forum.juce.com/u/playpm)\ **Post date:** [August 18, 2022, 3:40pm UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/13 "2022-08-18T15:40:51Z")
I tried this method, changing UIViewPeerControllerReceiver from private to public, then file browser under iOS AUv3 is ok, but iOS standalone freezes this time 🤣 Update: both standalone and AUv3 will work fine, if UIViewPeerControllerReceiver is public. ---
**Author:** ![leehu](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/leehu/32/3280_2.png) [@leehu](https://forum.juce.com/u/leehu)\ **Post date:** [August 18, 2022, 7:51pm UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/14 "2022-08-18T19:51:08Z")
@reuk hi - can we get some team exposure to this please. thx ---
**Author:** ![leehu](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/leehu/32/3280_2.png) [@leehu](https://forum.juce.com/u/leehu)\ **Post date:** [August 25, 2022, 7:11am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/15 "2022-08-25T07:11:16Z")
@reuk, @t0m - can someone please take a look at this please. thx ---
**Author:** ![instrumentMakers](https://avatars.discourse-cdn.com/v4/letter/i/bb73d2/32.png) [@instrumentMakers](https://forum.juce.com/u/instrumentMakers)\ **Post date:** [August 25, 2022, 9:25am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/16 "2022-08-25T09:25:19Z")
+1 ---
**Author:** ![t0m](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/t0m/32/16413_2.png) [@t0m](https://forum.juce.com/u/t0m)\ **Post date:** [August 30, 2022, 11:16am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/17 "2022-08-30T11:16:33Z")
Thank you for reporting. > ---
**Author:** ![lunelasuis](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/lunelasuis/32/6674_2.png) [@lunelasuis](https://forum.juce.com/u/lunelasuis)\ **Post date:** [September 20, 2022, 5:05pm UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/18 "2022-09-20T17:05:44Z")
There is one more issue with `FileChooser::Native` in AUv3. The plugin crashes if the editor is closed while FileChooser is active. Destructor is called from `ModalComponentManager::handleAsyncUpdate`, but the object is freed already. Anyone can recreate it? ---
**Author:** ![playpm](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/playpm/32/14429_2.png) [@playpm](https://forum.juce.com/u/playpm)\ **Post date:** [October 25, 2022, 3:17am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/19 "2022-10-25T03:17:02Z")
Oh god, this is exactly what I’m experiencing now, did you find the solution? ---
**Author:** ![playpm](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/playpm/32/14429_2.png) [@playpm](https://forum.juce.com/u/playpm)\ **Post date:** [October 25, 2022, 3:18am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/20 "2022-10-25T03:18:02Z")
> [@lunelasuis](#): > > There is one more issue with `FileChooser::Native` in AUv3. The plugin crashes if the editor is closed while FileChooser is active. Destructor is called from `ModalComponentManager::handleAsyncUpdate`, but the object is freed already. Anyone can recreate it? Hi, we both found this issue, any suggestion for dealing with this? ---
**Author:** ![lunelasuis](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/lunelasuis/32/6674_2.png) [@lunelasuis](https://forum.juce.com/u/lunelasuis)\ **Post date:** [October 25, 2022, 7:56am UTC](https://forum.juce.com/t/juce-7-cannot-create-filebrowser-in-auv3-on-ios/52571/21 "2022-10-25T07:56:04Z")
Hi. Not really, it just sits there and I dont have enough time/experience to hack native iOS wrappers. Besides the fact that we still use workarounds to make the chooser popover work in AUv3.