Further to Kevin's note about creating native widgets on Android in another
thread, I thought I'd post the LCB template here that gets you all the
android native widgets (that is, classes in the android.widget package -
see here:
https://developer.android.com/reference/android/widget/package-summary.html)
I have set it up so you can simply use the merge function with the
appropriate value of tWidget - Button, DatePicker, EditText (i.e. native
field), etc
widget com.livecode.widget.native.android.[[tWidget]]
use com.livecode.foreign
use com.livecode.java
use com.livecode.widget
use com.livecode.canvas
use com.livecode.engine
use com.livecode.library.widgetutils
metadata version is "1.0.0"
metadata author is "LiveCode"
metadata title is "Android Native [[tWidget]]"
__safe foreign handler _JNI_GetAndroidEngine() returns JObject \
binds to
"java:com.runrev.android.Engine>getEngine()Lcom/runrev/android/Engine;!static"
__safe foreign handler _JNI_GetEngineContext(in pEngine as JObject) returns
JObject \
binds to "java:android.view.View>getContext()Landroid/content/Context;"
// Handlers for creating and attaching view
__safe foreign handler _JNI_CreateView(in pContext as JObject) returns
JObject \
binds to
"javaui:android.widget.[[tWidget]]>new(Landroid/content/Context;)"
__safe foreign handler _JNI_AddView(in pParentView as JObject, in
pChildView as JObject) returns nothing \
binds to "javaui:android.view.ViewGroup>addView(Landroid/view/View;)V"
private variable mNativeObj as optional JObject
private variable mOpen as Boolean
private handler IsAndroid() returns Boolean
return the operating system is "android"
end handler
public handler OnCreate()
put false into mOpen
end handler
private handler InitView()
// Create an android button using the Engine Context
variable tEngine as JObject
put _JNI_GetAndroidEngine() into tEngine
variable tContext as JObject
put _JNI_GetEngineContext(tEngine) into tContext
put _JNI_CreateView(tContext) into mNativeObj
// put my native window into tParent
variable tParent as Pointer
MCWidgetGetMyStackNativeView(tParent)
// wrap the parent pointer
variable tParentObj as JObject
put PointerToJObject(tParent) into tParentObj
// add the view
_JNI_AddView(tParentObj, mNativeObj)
// get the pointer from the view and set the native layer
variable tPointer as Pointer
put PointerFromJObject(mNativeObj) into tPointer
set my native layer to tPointer
end handler
private handler FinalizeView()
set my native layer to nothing
put nothing into mNativeObj
end handler
public handler OnOpen()
put true into mOpen
if IsAndroid() then
InitView()
end if
end handler
public handler OnClose()
if IsAndroid() then
FinalizeView()
end if
put false into mOpen
end handler
public handler OnPaint()
if IsAndroid() then
return
end if
fill text "Native [[tWidget]]" at center of my bounds on this canvas
end handler
end widget
I've made a screenshot with a selection of widgets here:
https://www.dropbox.com/s/67tm95mnniwobqt/Screenshot_2017-06-21-22-46-04.png
Obviously none of these things actually do anything until you hook into
their properties and listeners, but it is relatively straightforward to do
this. If you're interested you'll need to look up the individual class in
the android API and find the appropriate methods - the button example
should give you an idea of how to do this:
https://github.com/livecode/livecode/blob/develop/extensions/widgets/androidbutton/androidbutton.lcb
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