Android Question Open a page in specific orientation

stp

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Have B4XPage, specifig B4XPage5.bas and i want to open that page in landscape mode.
B4XPage5.bas is Type=Class. How can i do that ?
I dont want to change the orientation of that page. That page will open in landscape and stay in landscape.
 
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teddybear

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1.see here and there
 
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stp

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William Lancee said:
Then you have to open a second activity and set it for landscape.
see an example of use: https://www.b4x.com/android/forum/threads/exoplayer-full-screen-feature.132854/
Click to expand...
That is exactly what i want to do. But exactly it that example in Fullscreen module:
B4X: 
Private Sub SwitchTargetPlayerView(FullScreenIsDestination As Boolean)
    Dim mp As B4XMainPage = B4XPages.MainPage
    Dim jo As JavaObject
    Dim player As Object = mp.Player.As(JavaObject).GetField("player")
    jo.InitializeStatic("androidx.media3.ui.PlayerView")
    jo.RunMethod("switchTargetView", Array(player, IIf(FullScreenIsDestination, mp.SimpleExoPlayerView1, SimpleExoPlayerView1), IIf(FullScreenIsDestination, SimpleExoPlayerView1, mp.SimpleExoPlayerView1)))
End Sub

i dont understand the:
B4X: 
  Dim mp As B4XMainPage = B4XPages.MainPage
 
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William Lancee

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B4Xpages.MainPage is the class instance where the player is housed.
mp is just a synonym for that instance.
 
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stp

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William Lancee said:
B4Xpages.MainPage is the class instance where the player is housed.
mp is just a synonym for that instance.
Click to expand...
My page is named B4xPage4tv.bas on that page is my exoplayer.
In the example the player is on B4xMainpage
the code is now
B4X: 
Private Sub SwitchTargetPlayerView(FullScreenIsDestination As Boolean)
    Dim mp As B4XMainPage = B4XPages.MainPage
    Dim jo As JavaObject
    Dim player As Object = mp.Player.As(JavaObject).GetField("player")
    jo.InitializeStatic("androidx.media3.ui.PlayerView")
    jo.RunMethod("switchTargetView", Array(player, IIf(FullScreenIsDestination, mp.SimpleExoPlayerView1, SimpleExoPlayerView1), IIf(FullScreenIsDestination, SimpleExoPlayerView1, mp.SimpleExoPlayerView1)))
End Sub
i get the error:
B4X: 
Error occurred on line: 32 (FullScreen)
java.lang.RuntimeException: Object should first be initialized (SimpleExoPlayerView).
    at anywheresoftware.b4a.AbsObjectWrapper.getObject(AbsObjectWrapper.java:67)
    at com.theEyeApp.fullscreen._switchtargetplayerview(fullscreen.java:412)
    at com.theEyeApp.fullscreen._activity_create(fullscreen.java:384)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
    at com.theEyeApp.fullscreen.afterFirstLayout(fullscreen.java:105)
    at com.theEyeApp.fullscreen.access$000(fullscreen.java:17)
    at com.theEyeApp.fullscreen$WaitForLayout.run(fullscreen.java:83)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loopOnce(Looper.java:210)
    at android.os.Looper.loop(Looper.java:299)
    at android.app.ActivityThread.main(ActivityThread.java:8319)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:556)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1038)
** Activity (fullscreen) Resume **
line 32 is:
B4X: 
jo.RunMethod("switchTargetView", Array(player, IIf(FullScreenIsDestination, mp.SimpleExoPlayerView1, SimpleExoPlayerView1), IIf(FullScreenIsDestination, SimpleExoPlayerView1, mp.SimpleExoPlayerView1)))
what is wrong ?
 
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LucaMs

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stp said:
My page is named B4xPage4tv.bas on that page is my exoplayer.
Click to expand...
So you'll need to point to that page.
For example, if you made it public on the B4XMainPage, which is recommended:
B4X: 
Private Sub SwitchTargetPlayerView(FullScreenIsDestination As Boolean)
    Dim jo As JavaObject
    Dim player As Object = B4XPages.MainPage.B4xPage4tv.Player.As(JavaObject).GetField("player")
    jo.InitializeStatic("androidx.media3.ui.PlayerView")
    jo.RunMethod("switchTargetView", Array(player, IIf(FullScreenIsDestination, mp.SimpleExoPlayerView1, SimpleExoPlayerView1), IIf(FullScreenIsDestination, SimpleExoPlayerView1, mp.SimpleExoPlayerView1)))
End Sub
 
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stp

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dim mp ? There is no class ? exactly that is my problem
B4X: 
Private Sub SwitchTargetPlayerView(FullScreenIsDestination As Boolean)
    Dim mp As B4XMainPage = B4XPages.MainPage
    Dim jo As JavaObject
    Dim player As Object = mp.Player.As(JavaObject).GetField("player")
    jo.InitializeStatic("androidx.media3.ui.PlayerView")
    jo.RunMethod("switchTargetView", Array(player, IIf(FullScreenIsDestination, mp.SimpleExoPlayerView1, SimpleExoPlayerView1), IIf(FullScreenIsDestination, SimpleExoPlayerView1, mp.SimpleExoPlayerView1)))
End Sub
 
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LucaMs

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stp said:
dim mp
Click to expand...

I don't know if that Sub works, but it assumed the player was in the B4XMainPage.
Since your player is in your B4xPage4tv page, you should write it the way I did. "mp" is and was superfluous even in the original Sub; it was just a convenience for writing "mp" instead of B4XPages.MainPage; you had a variable "mp" that pointed to the MainPage.
 
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stp

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Fixed:
B4X: 
Private Sub SwitchTargetPlayerView(FullScreenIsDestination As Boolean)
    Dim page4tv As B4XPage4tv = B4XPages.GetPage("TvPre") ' That is the specific page
    Dim jo As JavaObject
    Dim player As Object = page4tv.Player.As(JavaObject).GetField("player")
    jo.InitializeStatic("androidx.media3.ui.PlayerView")
    jo.RunMethod("switchTargetView", Array(player, IIf(FullScreenIsDestination, page4tv.SimpleExoPlayerView1, SimpleExoPlayerView1), IIf(FullScreenIsDestination, SimpleExoPlayerView1, page4tv.SimpleExoPlayerView1)))
End Sub

Where tvpre is: Public TvPre As B4XPage4tv
 
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