Android Question Bring Previous Activity (Layout)

Hedi · Oct 26, 2021

Hello everyone,

I have an app that play music, if the user playing an audio and closing the app the music still playing, but when the user reopened the app, everything becoming default, just looks like its your first time opening the app, my question is: how can i reopen the last or the previous app, not the new activity, My Code:

My Code:

    Public n As Notification
    n.Initialize
    n.Icon = "icon"
    n.SetInfo("Active", "App Still Open", Main)
    n.Notify(1)
    Service.StartForeground(1,n)

Thank You!

Mahares · Oct 27, 2021

Hedi said:
I uploaded my sample project, can you Please do it for me

Replace all your Main activity code with the below code:

B4X:

Sub Process_Globals
    Private xui As XUI
    Public mp As MediaPlayer    
End Sub

Sub Globals
    Private CheckPlay As Boolean = False
    Private Button1 As Button
End Sub

Sub Activity_Create(FirstTime As Boolean)
     Activity.LoadLayout("Layout")
     If FirstTime Then
        mp.Initialize
    End If
End Sub

Sub Activity_Resume    
End Sub

Sub Activity_Pause (UserClosed As Boolean)
    If UserClosed Then mp.Stop
End Sub

Sub Button1_Click    
    If CheckPlay = False Then
        mp.Load(File.DirAssets, "Active.mp3")
        mp.Play
        mp.Looping = True
        Button1.Text = "Stop"...

Erel · Oct 27, 2021

Is this a B4XPages project? Where is the code that manages the music?

Hedi · Oct 27, 2021

Erel said:
Is this a B4XPages project?

Yes

Erel said:
Where is the code that manages the music?

The music code is also in the B4XPages, i have a button that play the music, for example:

Code:

    Private mp As MediaPlayer
    Private CheckPlay as Boolean = False
    
    
    Private Sub Button1_Click
        If CheckPlay = False Then
            mp.Initialize
            mp.Load(File.DirAssets, "Active.wav")
            mp.Play
            mp.Looping = True
            Button1.Text = "Stop"
            CheckPlay = True
        Else
            mp.Stop
            Button1.Text = "Play"
            CheckPlay = False
        End If
    End Sub

Erel · Oct 27, 2021

Please run your app, reproduce it, and post the logs.

The solution might be to add another activity that will just be used as the notification target and call the main activity when the second activity is created:

B4X:

  StartActivity(Main)
  Activity.Finish

Hedi · Oct 27, 2021

Hello @Erel

I uploaded my sample project, can you Please do it for me, I appreciate it.

Download the Project

Mahares · Oct 27, 2021

Hedi said:
I uploaded my sample project, can you Please do it for me

Replace all your Main activity code with the below code:

B4X:

Sub Process_Globals
    Private xui As XUI
    Public mp As MediaPlayer    
End Sub

Sub Globals
    Private CheckPlay As Boolean = False
    Private Button1 As Button
End Sub

Sub Activity_Create(FirstTime As Boolean)
     Activity.LoadLayout("Layout")
     If FirstTime Then
        mp.Initialize
    End If
End Sub

Sub Activity_Resume    
End Sub

Sub Activity_Pause (UserClosed As Boolean)
    If UserClosed Then mp.Stop
End Sub

Sub Button1_Click    
    If CheckPlay = False Then
        mp.Load(File.DirAssets, "Active.mp3")
        mp.Play
        mp.Looping = True
        Button1.Text = "Stop"
        CheckPlay = True
    Else
        mp.Stop
        Button1.Text = "Play"
        CheckPlay = False
    End If    
End Sub

1. You mentioned that your project was B4Xpages, but it is not.
2. You were initializing the player in the button click event. That is not the place
3. mp should be declared in Process_Globals
4. When you ask for help, don't address your questions to just one person and make others feel unimportant.

Hedi · Oct 27, 2021

Mahares said:
Replace all your Main activity code with the below code:

Thank you so much, today i learned something new, and it works fine <3

Mahares said:
1. You mentioned that your project was B4Xpages, but it is not.

No, my real project was B4Xpages, and this is just for example, but now i was changed from B4Xpages to Default project.

Mahares said:
2. You were initializing the player in the button click event. That is not the place

Yes, you right, Thank You!

Mahares said:
3. mp should be declared in Process_Globals

Okay, Thanks

Mahares said:
4. When you ask for help, don't address your questions to just one person and make others feel unimportant.

Sorry for that, I'm new, but in the future i do my best.

Android Question Bring Previous Activity (Layout)

Hedi

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Mahares

Erel

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Hedi

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Erel

B4X founder

Hedi

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Mahares

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Hedi

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