【Help】How can I set Activity.Background as the current wallpaper?

[powerchen]

I am a novice.

How can I set Activity.Background as the current wallpaper in B4A?

Activity.Background = ???

Thank you!

JAVA CODE

final WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
final Drawable wallpaperDrawable = wallpaperManager.getDrawable();
Main.this.getWindow().setBackgroundDrawable(wallpaperDrawable);

=======================

I have got it! Thank everyone!

    Dim r As Reflector
   Dim b As Bitmap
   Dim d As BitmapDrawable
   b.InitializeMutable(Activity.Width,Activity.Height)
   d.Initialize(b)
   r.Target = r.RunStaticMethod("android.app.WallpaperManager", "getInstance", Array As Object(r.GetContext), Array As String("android.content.Context"))
   Activity.Background = r.RunMethod("getDrawable")

 

[Erel]

You should first read the live wallpaper tutorial: Android Live Wallpaper tutorial

There is an example of drawing a bitmap. If you want to draw an activity to the live wallpaper you will need to first save the activity background as a bitmap.

You can create a new bitmap and draw the activity background with Canvas.DrawDrawable.

 

[powerchen]

You should first read the live wallpaper tutorial: Android Live Wallpaper tutorial

There is an example of drawing a bitmap. If you want to draw an activity to the live wallpaper you will need to first save the activity background as a bitmap.

You can create a new bitmap and draw the activity background with Canvas.DrawDrawable.

Thank you! Sorry, my English is very poor.

I may be wrong expression means.

I mean that "Activity.Background = wallpaper"

The current wallpaper is set to activity background, then activity looks like a transparent.

 

[powerchen]

You should first read the live wallpaper tutorial: Android Live Wallpaper tutorial

There is an example of drawing a bitmap. If you want to draw an activity to the live wallpaper you will need to first save the activity background as a bitmap.

You can create a new bitmap and draw the activity background with Canvas.DrawDrawable.

In another way, how to read the current wallpaper to bitmap.

 

[pluton]

Maybe this helps

Sub SetWallPaper(Bmp As Bitmap)
   Dim r As Reflector
   r.Target = r.RunStaticMethod("android.app.WallpaperManager", "getInstance", _
      Array As Object(r.GetContext), Array As String("android.content.Context"))
   r.RunMethod4("setBitmap", Array As Object(Bmp), Array As String("android.graphics.Bitmap"))
   ToastMessageShow("Wallpaper added successfully.",False)
End Sub

 

[nfordbscndrd]

... The current wallpaper is set to activity background, then activity looks like a transparent.

If you want to make the activity look like it is transparent, you can just make it transparent.
See the Documentation: Activity - Basic4android Wiki

 

[powerchen]

thx,but I want to get the wallpaper, not to set.

I want the act.bg is the pic of wallpaper

 

[powerchen]

If you want to make the activity look like it is transparent, you can just make it transparent.
See the Documentation: Activity - Basic4android Wiki

if I set Activity.Color = Colors.Transparent , the Actual effect is this

 

[powerchen]

If you want to make the activity look like it is transparent, you can just make it transparent.
See the Documentation: Activity - Basic4android Wiki

this is the Actual effect I want.


---------------------------------------

In the Eclipse, I can use the code to achieve.

      // 1.获取与给定Context关联的WallpaperManager
      final WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
      // 2.获取当前系统壁纸
      final Drawable wallpaperDrawable = wallpaperManager.getDrawable();
      Main.this.getWindow().setBackgroundDrawable(wallpaperDrawable);

The pic Exceeds forum quota by 22.2 KB. So I compressed.

 

[nfordbscndrd]

if I set Activity.Color = Colors.Transparent , the Actual effect is this
View attachment 10950

Without knowing what part of that screen shot is in your app and what part is the device's wallpaper, I can't tell what your screen shot is showing.

The screen shot in your other message doesn't appear to be a full screen, so it can't be the device's wallpaper, so I still can't tell what it is you want.

Sorry.

----Edit:

Now that you have posted the full screen shot, it appears that your problem with the screen shot in the other post is that you are not getting the transparent background when you enter Activity.Color = Colors.Transparent. Did you change the manifest file following the directions in this post?

If you did follow all the directions and still can't get it to work, then I'm afraid I'm not the one who can help you.

 

[powerchen]

Now that you have posted the full screen shot, it appears that your problem with the screen shot in the other post is that you are not getting the transparent background when you enter Activity.Color = Colors.Transparent. Did you change the manifest file following the directions in this post?

If you did follow all the directions and still can't get it to work, then I'm afraid I'm not the one who can help you.

Thank you!

http://www.b4x.com/forum/basic4andr...02-how-create-special-activity.html#post77475

If I set Activity.Color=Colors.Transparent and add the following line to the manifest editor,

SetActivityAttribute(main, android:theme, "@android:style/Theme.Translucent.NoTitleBar")

you can see the laucher not only the wallpaper.

 

[powerchen]

Maybe this helps

Sub SetWallPaper(Bmp As Bitmap)
   Dim r As Reflector
   r.Target = r.RunStaticMethod("android.app.WallpaperManager", "getInstance", _
      Array As Object(r.GetContext), Array As String("android.content.Context"))
   r.RunMethod4("setBitmap", Array As Object(Bmp), Array As String("android.graphics.Bitmap"))
   ToastMessageShow("Wallpaper added successfully.",False)
End Sub

Thank you!

But I want to get the wallpaper, not to set.

Can you tell me how to do it?

============================================================

Thanks again! I got it!

   Dim r As Reflector
   Dim b As Bitmap
   Dim d As BitmapDrawable
   b.InitializeMutable(Activity.Width,Activity.Height)
   d.Initialize(b)
   r.Target = r.RunStaticMethod("android.app.WallpaperManager", "getInstance", Array As Object(r.GetContext), Array As String("android.content.Context"))
   Activity.Background = r.RunMethod("getDrawable")