Android Question SupportedOrientations Question

[小小伍伍]

Hello everyone, I'm new here and transitioning from VB to B4A for app development. Could someone help me? I'm working on a project using B4A's B4XPages, as shown in the example in the attachment. The issue is with #SupportedOrientations: unspecified. When I enter the B4XMainPage or userMainPage, rotating the phone to landscape or portrait mode triggers the Main's Activity_Create() event, causing the phone to display a blank screen. Why does this happen? How can I ensure that the previous page remains displayed after rotating the phone? For example, if I'm on the userMainPage, I want it to stay visible after rotating the phone.

 

[jahswant]

In B4A B4XPages you must lock the orientation to something other than unspecified.

 

[小小伍伍]

In B4A B4XPages you must lock the orientation to something other than unspecified.

Is this a feature of B4A B4XPages？

 

[teddybear]

Hello everyone, I'm new here and transitioning from VB to B4A for app development. Could someone help me? I'm working on a project using B4A's B4XPages, as shown in the example in the attachment. The issue is with #SupportedOrientations: unspecified. When I enter the B4XMainPage or userMainPage, rotating the phone to landscape or portrait mode triggers the Main's Activity_Create() event, causing the phone to display a blank screen. Why does this happen? How can I ensure that the previous page remains displayed after rotating the phone? For example, if I'm on the userMainPage, I want it to stay visible after rotating the phone.

1.Don't modify the sub Activity_Resume of B4XPage project. it is the reason caused the phone to display a blank screen.
2.Remember current page，show current page when B4XPage_Appear of B4XMainPage. perhaps you need a new layout for the orientation

Project is attached

 

[John Naylor]

Is this a feature of B4A B4XPages？

Yes. In B4A with B4XPages you need to decide on orientation either portrait or landscape. However that doesn't mean you cannot start a new Activity in a different orientation.

 

[小小伍伍]

Thank you for your guidance. Combining the Main Activity_Resume event, using the cp global variable from the Starter module is a great solution. Thank you very much.

 

[小小伍伍]

Thank you for your guidance, your reminder has made my thoughts clearer. Thank you very much.

Yes. In B4A with B4XPages you need to decide on orientation either portrait or landscape. However that doesn't mean you cannot start a new Activity in a different orientation.