B4A Library [Library] B4aGridView v3.80

lonleystar · Jan 8, 2013

Hi guys, B4AGridView is updated to v3.70.

1: GridView Demo
1: Library
1: PDF Explanations

A big thanks goes to ( Sergey Tarasevich - author of Universal Image Loader )

A thanks is always appreciated.

B4AGridView
Author: Giuseppe Salvi
Version: 3.7

Fields:
- Default As Typeface
  The default NORMAL typeface object.
- Default_Bold As Typeface
  The default BOLD typeface object.
- Monospace As Typeface
  The NORMAL style of the default monospace typeface.
- Sans_Serif As Typeface
  The NORMAL style of the default sans serif typeface.
- Serif As Typeface
  The NORMAL style of the default serif typeface.
- Style_Bold As Int
  The default BOLD style int.
- Style_Bold_Italic As Int
  The default BOLD ITALIC style int.
- Style_Italic As Int
  The default ITALIC style int.
- Style_Normal As Int
  The default NORMAL style int.
Methods:
- LoadFontFromAssets (file As String) As Typeface
  Create a new typeface from the specified font data from assets.
- LoadFontFromFile (file As String) As Typeface
  Create a new typeface from the specified font data from sdcard.
Fields:
- Center As ScaleType
  Center the image in the view, but perform no scaling.
- Center_Crop As ScaleType
  Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the image
  will be equal to or larger than the corresponding dimension of the view (minus padding).
- Center_Inside As ScaleType
  Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the image
  will be equal to or less than the corresponding dimension of the view (minus padding).
- Fit_Center As ScaleType
  Scale the image using CENTER.
- Fit_End As ScaleType
  Scale the image using END.
- Fit_Start As ScaleType
  Scale the image using START.
- Fit_XY As ScaleType
  Scale the image using FILL.
- Matrix As ScaleType
  Scale using the image matrix when drawing.
Fields:
- CARDS As Int
  CARDS Effect = 2
- CURL As Int
  CURL Effect = 3
- FADE As Int
  FADE Effect = 12
- FAN As Int
  FAN Effect = 9
- FLIP As Int
  FLIP Effect = 5
- FLY As Int
  FLY Effect = 6
- GROW As Int
  GROW Effect = 1
- HELIX As Int
  HELIX Effect = 8
- PUZZLE As Int
  PUZZLE Effect = 16
- REVERSE_FLY As Int
  REVERSE_FLY Effect = 7
- REVERSE_TWIRL As Int
  REVERSE_TWIRL Effect = 15
- SLIDE_IN As Int
  SLIDE_IN Effect = 14
- STANDARD As Int
  Standard Effect = 0
- TILT As Int
  TILT Effect = 10
- TWIRL As Int
  TWIRL Effect = 13
- WAVE As Int
  WAVE Effect = 4
- ZIPPER As Int
  ZIPPER Effect = 11
Fields:
- Text_Bottom_Inside As GravityEnum
  Text Bottom InSide
- Text_Bottom_OutSide As GravityEnum
  Text Bottom OutSide
- Text_Center_Inside As GravityEnum
  Text Center InSide
- Text_Top_Inside As GravityEnum
  Text Top InSide
- Text_Top_OutSide As GravityEnum
  Text Top OutSide
Fields:
- AUTO_FIT As Int
  Creates as many columns as can fit on screen.
- NO_STRETCH As Int
  Disables stretching.
- STRETCH_COLUMN_WIDTH As Int
  Stretches the spacing between columns.
- STRETCH_SPACING As Int
  Stretches columns.
- STRETCH_SPACING_UNIFORM As Int
  Stretches the spacing between columns.
Fields:
- Compress_Format_JPG As CompressFormat
  Compression Format JPG
- Compress_Format_PNG As CompressFormat
  Compression Format PNG
PhotoGridView
Events:
- ItemClick (Position As Int, Value As Object)
- ItemLongClick (Position As Int, Value As Object)
- Ready ( As )
- ShareItemClick (Value As Object)
Methods:
- AddImage (dir As String, file As String)
 Add an image from sdcard or AssetsDir at the end of the GridView
- AddImageAt (index As Int, dir As String, file As String)
 Add an image from sdcard or AssetsDir to the desired position in the GridView
- AddImageFromWeb (address As String)
 Add an image from web at the end of the GridView
- AddImageFromWebAt (index As Int, address As String)
 Add an image from Web to the desired position in the GridView
- AddThisView
 Adds view to this activity 100%x,100%y
- ClearDiskCache
 Clears disk cache.
- ClearMemoryCache
 Clears memory cache
- DestroyEngine
 Stops ImageLoader and clears current configuration. Use this option on exit app.
- GetArrayList As List
 Gets array.
- GetCacheDir As String
 Returns application cache directory. Cache directory will be created on SD card
 ("/Android/data/[app_package_name]/cache") if card is mounted and app has appropriate permission. Else -
 Android defines cache directory on device's file system.
 Return type: @return:Cache {@link File directory}. 
 NOTE: Can be null in some unpredictable cases (if SD card is unmounted)
- GetImageListFromAssets (path As String, sort As Boolean) As List
 Get entire list of images stored in assets or sub-folder
 Examples:
 <code>
 Dim lv as ListView
 Dim l as list
 l.Initialize
 lv.Initialize("lv")
 Sub Menu_Click
 Activity.AddView(lv,0,0,100%x,100%y)
 l = GridView.GetImageListFromAssets("Here the Images folder stored in Assets")
 or
 l = GridView.GetImageListFromAssets(File.DirAssets)
 or
 l = GridView.GetImageListFromAssets("")
 For n = 0 To l.Size-1
 lv.AddSingleLine(l.Get(n))
 next
 End Sub
 </code>
- GetIndividualCacheDir As String
 Returns individual application cache directory (for only image caching from ImageLoader). Cache directory will be
 created on SD card ("/Android/data/[app_package_name]/cache/b4AGridview-Images") if card is mounted and app has
 appropriate permission. Else - Android defines cache directory on device's file system.
- GetItem (position As Int) As String
 Returns Item
 Example:
 i.Bitmap=LoadBitmap("",g.GetItem(Position))
- GetRealImagePath (filename As String) As String
 Returns the real path of the image
- GoToWebsite (url As String)
 Go to web site by given an address
 Example:
 GoToWebsite("www.example.com")
 url:
- Initialize (EventName As String)
 Initialize the object
- Initialize2 (EventName As String, withCacheName As String)
 Initialize the object and set own cache directory
- InitializeFromLayout (EventName As String, container As ViewGroup, Layout As String, LayoutID As String)
 Initialize the object from layout
- PauseEngine
 Pause ImageLoader. All new load and display tasks won't be executed until ImageLoader is resumed.
 Already running tasks are not paused.
- ResumeEngine
 Resumes waiting load and display tasks
- SetArrayList (array As ArrayList)
 Sets array.
- SetText (text As String)
 Sets the string value of the TextView.
- SetText2 (index As Int, text As String)
 Sets the string value of the TextView.
- ShareItemsTo (appName As String, item As String, subJect As String, message As String, shareTo As String)
 Share any items to ?
 app: name
 item:
 subJect:
 message:
 shareTo:
- ShareTextUrlTo (subject As String, text As String, message As String, shareTo As String)
 Share any text to ?
 subject:
 text:
 message:
 shareTo:
- ShowActionBarToShare (icons() As String)
 Sets the icons on action bar
 Example:
 Dim icons() As String = Array As String("gmail.png","email.png","gmx.png","dropbox.png","facebook.png","twitter.png","telegram.png","line.png")
 icons: as array
- ShowFromAssets (path As String, sort As Boolean)
 Populate GridView from assets or assets/sub-folder
- ShowFromBucket (path As String, sort As Boolean)
 Populate GridView from sdcard
- ShowFromMediaStore (sort As Boolean)
 Populate GridView from media store images
- ShowFromSdCard (dir As String, path As String, sort As Boolean)
 Populate GridView from sdcard
- ShowFromWeb (webStrings() As String, sort As Boolean)
 Populate GridView from web
- StopEngine
 Cancels all running and scheduled display image tasks.
 NOTE: This method doesn't shutdown if you set them.
 
 ImageLoader still can be used after calling this method.
- TextBackGroundColor (red As Int, green As Int, blue As Int)
 Sets the background color for this view.
 by default red = 0
 by default green = 0
 by default blue = 0
- TextColor2 (alpha As Int, red As Int, green As Int, blue As Int)
 Get or Sets Text Color - by default White
- isPauseOnFling As Boolean
 Whether pause ImageLoader during fling
- isPauseOnScroll As Boolean
 Whether pause ImageLoader during touch scrolling
Permissions:
- android.permission.INTERNET
- android.permission.READ_EXTERNAL_STORAGE
- android.permission.WRITE_EXTERNAL_STORAGE
Properties:
- CacheInMemory As Boolean [write only]
 Sets whether loaded image will be cached in memory.
- CacheOnDisk As Boolean [write only]
 Sets whether loaded image will be cached on disk.
- ColumnWidth As Int
 Get or Sets Specifies the fixed width for each column.
- CompressFormat As BitmaCompression
 Get or Sets the known formats a bitmap can be compressed into [ JPG or PNG ]Sets the quality of a bitmap, that can be compressed. [ 0 = low -> 100 = high ]
 by default PNG
- CompressQuality As Int
 Get or Sets the quality of a bitmap, that can be compressed. [ 0 = low -> 100 = high ]
 by default 100
- DelayBeforeLoading As Int [write only]
 Sets delay time before starting loading task. Default - no delay.
- FadeInTime As Int [write only]
 Duration of "fade-in" animation (in milliseconds)
 Whether animation should be played if image is loaded from network
 Whether animation should be played if image is loaded from disk cache
 Whether animation should be played if image is loaded from memory cache
- Friction As Boolean
 Get or Sets the amount of friction applied to flings.
- Gravity As Int [write only]
 Specifies the gravity within each cell.
- HorizontalSpacing As Int [write only]
 Defines the default horizontal spacing between columns..
- ItemHeight As Int
 Get or Sets the the size of the images will be displayed in thumbnail by default size is 480x320
- ItemWidth As Int
 Get or Sets the the size of the images will be displayed in thumbnail by default size is 480x320
- Length As Int [read only]
 Returns length
- LoadFontFromAssets As String [write only]
 Loads a new Typeface from the specified font data.
- LoadFontFromFile As String [write only]
 Loads a new Typeface from the specified font data.
- MaxAnimationVelocity As Int
 Get or Sets max animation velocity.
- NumColumns As Int
 Get or Sets the number of columns in the grid.
- PauseOnFling As Boolean [write only]
 Whether pause ImageLoader during fling
- PauseOnScroll As Boolean [write only]
 Whether pause ImageLoader during touch scrolling
- ProgressBarIndeterminate As Boolean [write only]
 Change the indeterminate mode for this progress bar.
- ProgressBarVisible As Boolean [write only]
 Set the enabled state of this view. - by default is trueChange the indeterminate mode for this progress bar.
- RemoveAt As Int [write only]
 Removes the item at the specified location from this list.
- ResetViewBeforeLoading As Boolean [write only]
 Sets whether image view will be reset before image loading start
- RoundedBitmap As Boolean [write only]
 Can display bitmap with rounded corners. - by default is false
- ScaleType As PhotoScaleTypes
 Controls how the image should be resized or moved to match the size of this ImageView.
 by default ScaleTypeFIT_XY
- ScaleTypeForRounded As ScaleType [write only]
 Controls how the RoundedBitmap should be resized or moved to match the size of this ImageView.
 by default ScaleType.FIT_CENTER
- Selection As Int
 Get or Sets the currently selected item.
- SetBorderColor As Int [write only]
 Set the border Color - by default is transparent
- SetBorderWidth As Int [write only]
 Set the border Width - by default is 0
- SetCornerRadius As Int [write only]
 Set the corner Radius - by default is 0
- SetImageOnFail As String [write only]
 Sets own icon on fail
- SetImageOnLoading As String [write only]
 Sets own icon on loading
- SetNoEffect As Boolean [write only]
 Can display bitmap with rounded corners.
 Show thumbnails with corner radius or oval. - by default is true
- ShouldOnlyAnimateFling As Boolean
 Get or Sets should only animate fling.
- ShouldOnlyAnimateNewItems As Boolean
 Get or Sets should only animate new item.
- ShowMessageError As Boolean [write only]
 Set to true if you want to display an error message.
- SimulateGridWithList As Boolean
 Get or Sets simulate grid with list.
- SmoothScrollbarEnabled As Boolean [write only]
 When smooth scrollbar is enabled, the position and size of the scrollbar thumb is computed based on the number of visible pixels in the visible items.
- StretchMode As StretchModeEnum
 Defines how columns should stretch to fill the available empty space, if any.
 Examples:
 GridView.StretchMode = GridView.StretchMode.STRETCH_SPACING
- Tag As Object
 Get or Sets this view's tag.
- TextBackGroundAlpha As Int
 Get or Sets alpha property of the view, as a value between 0 (completely transparent) and 255 (completely opaque).
 by default alpha = 0
- TextBackGroundColor2 As String [write only]
 Sets the background color for this view.
 Example:
 TextBackGroundColor2("#88666666")
- TextColor As Int
 Get or Sets Text Color - by default White
- TextGravity As Int
 Get or Sets the horizontal alignment of the text that will be used.
- TextLines As Int
 Get or Sets the TextView exactly this many lines tall.
- TextPosition As TextPositionEnum
 Get or Sets the position alignment of the text that will be used.
 param Text_Top_OutSide
 param Text_Top_Inside
 param Text_Center_Inside
 param Text_Bottom_Inside
- TextSize As Int
 Get or Sets Text Size - by default 14
- TextStyle As Int [write only]
 Sets the style in which the text should be displayed.
- TextTypeFace As TypefaceUtils
 Get or Sets the typeface and style in which the text should be displayed.
 Note that not all Typeface families actually have bold and italic variants,
 so you may need to use TextStyle(style) to get the appearance that you actually want.
- TextVisible As Boolean
 Get or Sets the visibility of the text - by default is hide
- TransitionDuration As Int
 Get or Sets transition duration.
- TransitionEffect As TransitionEffect
 Get or Sets the desired transition effect.
- Version As String [read only]
 Version of the library
- VerticalSpacing As Int [write only]
 Defines the default vertical spacing between rows.

wy328 · Oct 15, 2013

lonleystar said:
Hi wy328, yes i know it is an ascii code but it is not accepted i really dont know why.

Thanks again! It's so puzzling... maybe put a control there, I mean replace "'" with "\'" in the lib code?

lonleystar · Oct 15, 2013

Hi wy328, the characters that are not accepted are: \ / : ? " < > |'

wy328 · Oct 15, 2013

lonleystar said:
Hi wy328, the characters that are not accepted are: \ / : ? " < > |'

ok, I'm thinking about to fix all file names for user automatically in my app, thanks for your help!

lonleystar · Oct 17, 2013

Hi wy328, have a look here http://source.android.com/devices/tech/input/key-character-map-files.html

lonleystar · Oct 17, 2013

Hi all, i just uploaded the b4aGridView 2.60 fixed few bugs.

Now the space betwen the items is perfect.

I also add :

ClearCache this will delete the entire cache created before
and
CreateCache

Examples:

GridView.CreateCache = "Your Folder Name"

this will create a cache in SDCARD ( Android/data/Your Folder Name/cache/.thumbs )

B4X:

    GridView.Initialize("GridView")
   
    Activity.AddView(GridView,0dip,0dip,100%x,100%y)

    GridView.CreateCache = ".it.giuseppe.salvi"
   
    GridView.ItemWidth=200dip
    GridView.ItemHeight=200dip
    GridView.HorizontalSpacing=10dip
    GridView.VerticalSpacing=10dip
    GridView.NumColumns=3'GridView.AUTO_FIT
    GridView.ColumnWidth=GridView.ItemWidth
    GridView.StretchMode=GridView.ColumnWidth
    GridView.Gravity=Gravity.CENTER

    GridView.PopulateGridView(File.DirRootExternal,"Images2")

wy328 · Oct 17, 2013

should we call createcache every time the app start?

lonleystar · Oct 17, 2013

Hi wy328, it is just the name of the folder is created the first time.

Of cours it will ceck always in tis folder to loading the information for the thumbnails to show in gridview

lonleystar · Nov 3, 2013

Hi guys, I added

PopulateGridViewFromWeb

Now u can populate GridView also from web.

Just Download the new library v2.70

B4X:

Sub Globals
Dim GridView As B4AGridView
Dim l1 As Label
Dim s() As String

End Sub

Sub Activity_Create(FirstTime As Boolean)
    Activity.LoadLayout("1")
    GridView.Initialize("GridView")

    Activity.AddView(GridView,0dip,0dip,100%x,100%y)

    GridView.CreateCache = ".it.giuseppe.salvi"
    GridView.Animation=True
    GridView.ItemWidth=200dip
    GridView.ItemHeight=200dip
    GridView.HorizontalSpacing=10dip
    GridView.VerticalSpacing=10dip
    GridView.NumColumns=3'GridView.AUTO_FIT
    GridView.ColumnWidth=GridView.ItemWidth
    GridView.StretchMode=GridView.ColumnWidth
    GridView.Gravity=Gravity.CENTER
    Activity.AddMenuItem("Add Image","a")
    Activity.AddMenuItem("Add Image At","b")
    Activity.AddMenuItem("Populate From Disk","c")
    Activity.AddMenuItem("Populate From Web","d")
    Activity.AddMenuItem("Clear Cache","e")
    Activity.AddMenuItem("Exit","f")
  
    s = Array As String("https://lh3.googleusercontent.com/-rrFnVC8xQEg/URqufdrLBaI/AAAAAAAAAbs/s69WYy_fl1E/s1024/Chess.jpg","http://www.hdwallpapers3d.com/wp-content/uploads/abstract-wallpaper1.jpg","http://www.walldoze.com/static/wallpaper/1920x1200/hd-wallpapers-wide-war-desktop-background-wallpaper-1920x1200-wallpaper.jpg","https://lh6.googleusercontent.com/-55osAWw3x0Q/URquUtcFr5I/AAAAAAAAAbs/rWlj1RUKrYI/s1024/A%252520Photographer.jpg","https://lh4.googleusercontent.com/--dq8niRp7W4/URquVgmXvgI/AAAAAAAAAbs/-gnuLQfNnBA/s1024/A%252520Song%252520of%252520Ice%252520and%252520Fire.jpg","https://lh5.googleusercontent.com/-7qZeDtRKFKc/URquWZT1gOI/AAAAAAAAAbs/hqWgteyNXsg/s1024/Another%252520Rockaway%252520Sunset.jpg","https://lh6.googleusercontent.com/-9lzOk_OWZH0/URquoo4xYoI/AAAAAAAAAbs/AwgzHtNVCwU/s1024/Frantic.jpg","https://lh6.googleusercontent.com/-74Z5qj4bTDE/URqu6LSrJrI/AAAAAAAAAbs/XzmVkw90szQ/s1024/Orchid.jpg","https://lh5.googleusercontent.com/-GoUQVw1fnFw/URquv6xbC0I/AAAAAAAAAbs/zEUVTQQ43Zc/s1024/Kauai.jpg")

End Sub

Sub a_Click

GridView.AddImage(File.DirAssets,"a.jpg")

End Sub

Sub b_Click

GridView.AddImageAt(1,"","a.jpg")

End Sub

Sub c_Click

GridView.PopulateGridView(File.DirRootExternal,"Images2")

Activity.Title = "Items From Disk in GridView = " & GridView.Length

End Sub

Sub d_Click

GridView.PopulateGridVieFromWeb(s)

Activity.Title = "Items From Web in GridView = " & GridView.Length

End Sub

Sub e_Click

GridView.ClearCache

End Sub

Sub f_Click
  
    ExitApplication

End Sub

Sub Activity_Resume
End Sub

Sub Activity_Pause (UserClosed As Boolean)
End Sub

Sub GridView_ItemLongClick(Position As Int, Value As Object)
  
    ExitApplication

End Sub

Sub GridView_ItemClick(Position As Int, Value As Object)  
      Msgbox(Value, "")
End Sub

Sub GridView_ItemSelected(Position As Int, Value As Object)

    Activity.Title = "Items in GridView = " & GridView.Length&" -- Position =" & Position
  
End Sub

Ferdari · Jun 3, 2014

Hi, thanks for the Lib

How do you order the gridview, im using PopulateFromWeb, my server sends a random ordered array of images, but GridView Always reorder it alphabetically,
How do i change to load gridview as server do, Random?

Thanks again

lonleystar · Jun 3, 2014

Hi Ferdari, it reorder automatically but will update new version of Gridview width reorder by user in few days

Ferdari · Jun 4, 2014

one of my user get this error

B4X:

java.lang.NoSuchMethodError: android.widget.GridView.getColumnWidth
at it.giuseppe.salvi.GridViewActivity.getColumnWidth(GridViewActivity.java:275)
at ferdari.goodpaper.main._activity_create(main.java:321)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:538)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:174)
at ferdari.goodpaper.main.afterFirstLayout(main.java:98)
at ferdari.goodpaper.main.access$100(main.java:16)
at ferdari.goodpaper.main$WaitForLayout.run(main.java:76)
at android.os.Handler.handleCallback(Handler.java:618)
at android.os.Handler.dispatchMessage(Handler.java:123)
at android.os.Looper.loop(SourceFile:351)
at android.app.ActivityThread.main(ActivityThread.java:3841)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:538)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:969)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:727)
at dalvik.system.NativeStart.main(Native Method)

Android 2.3.3 - 2.3.71

ONE TOUCH 4007X

Do you know what happen? no other devices tested happen this.

lonleystar · Jun 4, 2014

Hi, as i told u in post #50 resolved many bugs

Ferdari · Jun 8, 2014

I tried using the lib on android 2+ and its not working, simply app cant open with error:

B4X:

java.lang.NoSuchMethodError: android.widget.GridView.getColumnWidth

but in android 4+ there are no problems, can you update the requirements, only working on android 4+

lonleystar · Jun 9, 2014

Hi Ferdari, as I promise it coming soon soon, the library is already finished just testing.

Shahid Saeed · Jun 11, 2014

I am trying to load images from web through a JSON file.

When I am applying the code below; it only shows the last image?

B4X:

Dim parser As JSONParser
pasrser.Initialize(json)

Dim root As Map = parser.Nextobject
Dim Pictures As List = root.Get("Pictures")
For each pictureURL As Map In Pictures
Dim URL As String = pictureURL.Get("url")

s = Array As String(URL)
Next
GridView.PopulateGridViewFromWeb(s)

lonleystar · Jun 11, 2014

Hi Shahid Saeed, U r right it has many bugs but till tommorrow I'll upload the new GridView, I'm testing it and till now I dint get any error I'll also make a movie so every body see how it work.

Shahid Saeed · Jun 12, 2014

lonleystar said:
Hi Shahid Saeed, U r right it has many bugs but till tommorrow I'll upload the new GridView, I'm testing it and till now I dint get any error I'll also make a movie so every body see how it work.

Since you are working on an update; can you also try possibility of adding Picture Title for Each picture? e.g at the bottom of each picture could be a text field?

lonleystar · Jun 12, 2014

Hi, not in this update in to the next it'll.

Shahid Saeed · Jun 15, 2014

lonleystar said:
Hi, not in this update in to the next it'll.

Is there any update? I am still waiting...

lonleystar · Jun 15, 2014

Hi guys, B4AGridView is updated to v3.10 whit new Image Loader engine.

The zip include:

the library.
2 Demo.
1 pdf for explanations

A big thanks goes to ( Sergey Tarasevich - author of Universal Image Loader )

B4A Library [Library] B4aGridView v3.80

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