About GLSurfaceView work mechanism

by wu tony » Sun, 12 Apr 2009 12:52:49 GMT

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 In current GLSurfaceView code,seems it will directly render to the surface
buffer  and then SurfaceFlinger will compose it to display.

My question is:
Which type of surface is actually created in surfaceflinger? Layer or


About GLSurfaceView work mechanism

by Eric Chen » Sun, 12 Apr 2009 22:56:43 GMT



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1. Touchscreen not completely working

I've got a USB touch screen. I created my own driver that reports
BTN_TOUCH, ABS_X, ABS_Y, ABS_PRESSURE values. It's calibrated with the
steps following at this site: 

The pressure can't be acquired from the device so when BTN_TOUCH is 1,
ABS_PRESSURE will be around 60. When BTN_TOUCH is 0, ABS_PRESSURE is

With the test application from the above site, I was getting good X
and Y values between 0 and about 900.

But all I'm getting inside Android is when I touch the screen
(anywhere), only the most upper notification bar gets a bit down. I
can't pull this down.

What's wrong here?

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2. getting around Phoneapp activity 1.1?


Is it possible to get around the phone app InCallScreen in Android

thanks, I greatly appreciate it!

Below is the message sent during Android 1.0 and the answer from
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I have searched through the list for ways to launch my activity when
incoming call comes in using PhoneStateListener. On receiving the
CALL_STATE_RINGING in my app, I use an intent to start my new

However, my activity gets created, started and stopped. And instead
default Phoneapp takes over and com.android.phone.InCallScreen is
I was wondering if there is a way to get around the default PhoneApp
IncomingCall activity so that my activity can be displayed. My
is not trying to replace the default PhoneApp. My activity becomes
only after the PhoneApp is done which happens after the call is either


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