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Created attachment 7885 [details]
The normal Detail button.
I attached some screen shots. Basically, if you look at bug ID 22564 (WinPhone App Bar Buttons with Master/Detail apps), on Android the problem is very subtle and concerns the icon used as the Master button. Follow the same steps, and the icon button will be reduced in horizontal size. The attached images show the issue (ignore the typo in the text on the images).
Created attachment 7886 [details]
Detail button after showing a secondary page
I have checked this issue and not able to reproduce this issue. To reproduce this I have followed the steps and instruction as provide above in bug description. I have run the "MobileCRM" Xamarin forms sample on device and emulator. I deploy the application on android device and followed the steps:
1. Click the Master button.
2. Click Leads.
3. Click List tab.
4. Click entry.
5. On detail entry screen, click Master button.
6. Pick anything other than Leads...screen stays the same. Back button doesn't work.
7. Click Master then Leads again.
8. Click Back button.
9. Everything back to normal again.
I concerned the icon used as the Master button, and observed that icon button does't reduced in horizontal size. I also observed that the icon shown in your attachment is different then the icon used in the "MobileCRM" sample.
Could you please provide us your environment info, sample application? That will be halpfull to reproduce this issue at our end. And please let me know if I am missing something anywhere to reproduce this issue.
Microsoft Visual Studio Professional 2013
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Microsoft Web Developer Tools 2013 2.0.40926.0
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Xamarin 22.214.171.124 (0b2a123923812a88ed3091909478dbe9e0111f00)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android
I've tested the Mobile CRM app on a Samsung Galaxy Note 8, and it does indeed happen, just not as noticeable. The icon actually shifts itself to the left. But being a narrow icon, you still see all of it, but it definitely moves further over to the left.
Any news to this problem?
My problem is, that the master-icon is shifted to right, after a content-page is showed from a detail-page.
Thank you for taking the time to submit this report. After reviewing the description of this bug, we no longer believe it affects the current version of Xamarin.Forms with AppCompat. If you are still experiencing the issue after updating your packages, please reopen this report with an attached reproduction.
For your convenience, we have created some reproduction best practices viewable here: https://gist.github.com/jassmith/92405c300e54a01dcc6d
Xamarin Forms Team