Regarding this line:
val pm =
getSystemService(Context.POWER_SERVICE).asInstanceOf[PowerManager]
I want to share a neat abstraction I wrote around it:
https://github.com/pfn/android-common/blob/master/src/main/scala/AndroidConversions.scala#L176
Basically, this lets you do:
context.systemService[PowerManager] and get a PowerManager object directly,
no cast, no need to use the 'POWER_MANAGER' constant.
android-common is just a set of small utilities I use across all my
projects (there are implicits for converting functions to android callback
types, but they're incomplete and I don't like them. -- I would really like
to use scala-sam instead, but intellij has no support, and it's hidden
under -Xexperimental in 2.11)
The library can be used directly, or just copy-paste the parts you want.
On Wednesday, December 3, 2014 8:09:40 AM UTC-8, Daniel Skinner wrote:
>
> I'm still learning a few things about scala but I'm wondering if anyone
> has insight on accessing java statics from scala in relation to the Android
> API. This rarely comes up but here's two examples.
>
> From https://developer.android.com/training/scheduling/wakelock.html
>
> The support library has a WakefulBroadcastReceiver that contains two
> static methods. If i create a scala class that extends this, I can't access
> the static methods for starting a wakeful service and finishing it.
>
> Likewise,
> http://developer.android.com/reference/android/os/PowerManager.WakeLock.html
> I can't declare a WakeLock type with something like `val wakeLock: WakeLock
> = null`.
>
> I have an intent service and worked around this with the following that I
> access in onCreate and onDestroy (letting the type be inferred)
>
> lazy val (wakeLock, wifiLock) = {
> val pm =
> getSystemService(Context.POWER_SERVICE).asInstanceOf[PowerManager]
> val wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
> "ClientWakeLock")
> wakeLock.acquire()
> val wm =
> getSystemService(Context.WIFI_SERVICE).asInstanceOf[WifiManager]
> val wifiLock = wm.createWifiLock(WifiManager.WIFI_MODE_FULL,
> "ClientWifiLock")
> wifiLock.acquire()
> (wakeLock, wifiLock)
> }
>
> but I'm wondering if there's some other way so that I can declare the type.
>
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