iOS Question slower app opening than other apps

MikeH

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• Aug 18, 2015

• #2

I have it too:

http://www.mhnw11494.pwp.blueyonder.co.uk/Misc/VID_20150818_195112.mp4

 

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sorex

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• Aug 18, 2015

• #3

yes, it's visible in the video aswell.

altho when I run your app on my iphone 4s that white bar is there for almost 2 seconds.

it almost looks that the debugger connect page is still inbetween even in release mode.

 

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JanPRO

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• Aug 18, 2015

• #4

I guess your Application_Start sub is too large, so it contains too many processes, but it's just a guess ...

 

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sorex

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• Aug 18, 2015

• #5

It also happends on an empty app that just loads a layout with 1 label.

 

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JanPRO

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• Aug 18, 2015

• #6

Sorry, but I really can't see this issue with an empty app ...

sorex said:

are the pure objC compiled ones just a lot faster than what B4A creates ?

Click to expand...

B4i generates also Objective C code

 

Last edited: Aug 18, 2015

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tufanv

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• Aug 19, 2015

• #7

When i used a searchview on load it happened to me.

 

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Erel

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• Aug 19, 2015

• #8

I don't see it here with an empty project. Make sure that your app doesn't do any heavy stuff in Application_Start. Building an index for SearchView is a good example of a slow operation.

 

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ilan

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• Aug 19, 2015

• #9

All my apps show a black screen on start for few ms, but this doesnot bother me.

Has it something to do with the launch image?

Can we add a launch image??

I just read this thread: https://www.b4x.com/android/forum/t...ack-screen-no-launch-image-yet.54822/#content

 

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Erel

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• Aug 19, 2015

• #10

ilan said:

Can we add a launch image??

Click to expand...

Yes: How to add launch images in B4i

 

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ilan

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• Aug 19, 2015

• #11

Erel said:

Yes: How to add launch images in B4i

Click to expand...

Thank you erel, i will try it out when i will find the time for it

 

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sorex

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• Aug 19, 2015

• #12

it is the same screen as when the app is trying to connect to the ide but without the spinner and IP text.

can I record my iphone screen somehow?

 

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Erel

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• Aug 19, 2015

• #13

Can you post your Application_Start code?

 

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sorex

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• Aug 19, 2015

• #14

sure but like I said it's just an empty project with a label.

B4X:

Private Sub Application_Start (Nav As NavigationController)
    NavControl = Nav
    Page1.Initialize("Page1")
    NavControl.ShowPage(Page1)
    Page1.RootPanel.LoadLayout("main")   
End Sub

 

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sorex

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• Aug 19, 2015

• #15

I recorded it with my phone, a real blurred mess as it is too small to focus on but I'll see if I can extract a screenshot of it.

 

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Erel

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• Aug 19, 2015

• #16

You can add a launch image: How to add launch images in B4i

 

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sorex

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• Aug 19, 2015

• #17

I created an image based on the end result.

the problem is the black color I guess, can we force it to the background color that will be used in the app?



it is also happening when using that real fullscreen mode, you get a non fullscreen display first

 

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ilan

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• Aug 19, 2015

• #18

sorex said:

I created an image based on the end result.

the problem is the black color I guess, can we force it to the background color that will be used in the app?

View attachment 36773

it is also happening when using that real fullscreen mode, you get a non fullscreen display first

Click to expand...

Try to change your launch image... as erel has already recommendet

 

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sorex

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• Aug 19, 2015

• #19

I'm reading that post now but if these images are white why do I get a black screen when opening my app and Mike's Wild Camping app?

 

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ilan

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• Aug 19, 2015

• #20

sorex said:

I'm reading that post now but if these images are white why do I get a black screen when opening my app and Mike's Wild Camping app?

Click to expand...

What phone are you using? It says that the white launch image is only for iphone 5/6/6+

 

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