can I use SDK 4.0.1 NOW for older devices

As in subject....

Can I recompile watch face using SDK 4 for e.g. fenix 6 that have 3.2.4 on device and it should run well?

Of course I'm not going using any news from sdk 4.

First test show yes, even for buffered bitmaps (trying use buffered bitmap for upcoming watches generate errors and rather I have to change some code...).

0 Felipe over 5 years ago

I got through the part of the buffered bitmap. You need to create a new generic function like the below:

function bufferedBitmapFactory(options as {
            :width as Number,
            :height as Number,
            :palette as Array<ColorType>,
            :colorDepth as Number,
            :bitmapResource as WatchUi.BitmapResource
        }) as BufferedBitmapReference or BufferedBitmap {
    if (Graphics has :createBufferedBitmap) {
        return Graphics.createBufferedBitmap(options);
    } else {
        return new Graphics.BufferedBitmap(options);
    }
}

And instead of calling the buffered bitmap using "offscreenBuffer = new Graphics.BufferedBitmap(...)", just call the above function this way: "offscreenBuffer = bufferedBitmapFactory(...)" and it is going to work with both SDK 4 and those before.

However, I'm now stuck on the getDc() function that doesn't exist on the SDK 4. I tried looking at the samples, all the ones that I have looked are still using the getDc() . Does anyone know what I need to do here?

0 _psx_ over 5 years ago in reply to Felipe

I've read about it, the problem can be in next step especially with purge...

What does mean:

but if your bitmap is purged after allocation, you need to re-render its contents. Alternatively, you can call the get() method on the reference to get a locked version of the bitmap

Which class get() should I use?
Can I store reference in any class members?
Is this member consume app's memory?

0 Felipe over 5 years ago in reply to _psx_

I think they might be talking about ResourceReference class, as I could find in the API documentation that this class has a get() function.

However, I don't have a clue of what needs to be inside the ResourceReference class. They should have updated the Analog sample using SDK4, or else is going to be hard for people to figure out how those new things work.

0 _psx_ over 5 years ago in reply to Felipe

there is no any example

Previous I had:

mBuf = new GRA.BufferedBitmap({
                           :width => mWbmp + mFrameThickness,
                           :height => mHbmp + mFrameThickness,
                            :palette => palette});

Now I've tried e.g:

if(GRA has :createBufferedBitmap)
{
mBuf = GRA.createBufferedBitmap({
:width => mWbmp + mFrameThickness,
:height => mHbmp + mFrameThickness,
:palette => palette});
mBuf = GRA.ResourceReference.get().mBuf;

and strange errors

Details: Could not find symbol '<Toybox_Graphics_ResourceReference_>>mWeakResourceReference>'

0 jim_m_58 over 5 years ago in reply to _psx_

Try

mBuf=mBuf.get()

0 _psx_ over 5 years ago in reply to jim_m_58

yes, It's run

question, can I assume that mBuf will have value all the time or I have to use isCached() before using?

0 jim_m_58 over 5 years ago in reply to _psx_

The way I understand it is the get() as long as mBuf is something like an instance variable, that will keep it locked in the graphics pool.

0 jim_m_58 over 5 years ago in reply to jim_m_58

See this thread for more info:

forums.garmin.com/.../4-0---upcoming-wearables