State of charge screensaver

I've seen an application that replaces the clock on the screen by default when the device is charging. Do you use java or Plazmic to create a screen saver?

Take a look at this interface:

net.rim.device.api.system.SystemListener2

His usbConnectionStateChange(int state) will be called when the phone is connected to / disconnected the USB cable or charger. Analyze the argument of the State and, if it is USB_STATE_CABLE_CONNECTED, display your screen saver (remember requestForeground).

To implement this listener in your application and call Application.getApplication.addSystemListener (...) somewhere in the application startup procedure.

Alternatively, you can implement just the SystemListener (the parent interface) and check the State of batteryStatusChange's argument. If DeviceInfo.BSTAT_CHARGING is present, display the screen saver.

Remember UNdisplay the screen saver (and potentially bring your app in the background) in the listeners about events in the face.

Tags: BlackBerry Developers

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