On Mon, Feb 13, 2012 at 05:14:50PM +0400, Kostya Vasilyev wrote:
> Does the call to Bitmap.create() return a non-null object in the first
> place? If it returns null, have you tried RGB_565, just as a test?
Ok, I wrapped everything after the call to Bitmap.create up to and
including loading bmp into the imageView in an
if {bmp != null) {
}
and it still forced closes. I then commented it all out...no force
close. logcat says the NULL exception is happening (caused by) loading
bmp into the imageView. But in this case, it didn't even get that far.
> An ALPHA_8 bitmap would use one quarter the amount of memory of an
> ARGB_8888 bitmap.
Ahhhh, ok...I misread the description. I thought the dev guide was
saying that an ALPHA_8 bitmap was just a bunch of alpha values (yeah,
kind of a stupid interpretation, now that I look back at it <grin>).
Yes, I agree...that is definitely the right choice. I'll uncomment
everything and see how that works. And here are the results...and this
time, instead of summarizing the logcat output, I'm just posting it:
--------------------------- CUT HERE ---------------------------
D Shutting down VM
W threadid=1: thread exiting with uncaught exception (group=0x401f9760)
E FATAL EXCEPTION: main
E java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.jdgapps.demo/com.jdgapps.demo.
DemoCameraFiltersActivity}:
java.lang.NullPointerException
E android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1815)
E android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1831)
E android.app.ActivityThread.access$500(ActivityThread.java:122)
E android.app.ActivityThread$H.handleMessage(ActivityThread.java:1024)
E android.os.Handler.dispatchMessage(Handler.java:99)
E android.os.Looper.loop(Looper.java:132)
E android.app.ActivityThread.main(ActivityThread.java:4123)
E java.lang.reflect.Method.invokeNative(Native Method)
E java.lang.reflect.Method.invoke(Method.java:491)
E
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
E com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
E dalvik.system.NativeStart.main(Native Method)
E Caused by: java.lang.NullPointerException
E com.jdgapps.demo.DemoCameraFiltersActivity.onCreate
(DemoCameraFiltersActivity.java:43)
E android.app.Activity.performCreate(Activity.java:4397)
E android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
E android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1779)
Force finishing activity com.jdgapps.demo/.DemoCameraFiltersActivity
--------------------------- CUT HERE ---------------------------
And this is the code block that's failing:
--------------------------- CUT HERE ---------------------------
Bitmap bmp = Bitmap.createBitmap(4, 3, Bitmap.Config.ALPHA_8);
if (bmp != null) {
Canvas mcanvas = new Canvas(bmp);
Paint paint = new Paint();
mcanvas.drawBitmap(bmp, 0, 0, paint);
paint.setColor(0x280000);
Matrix matrix = new Matrix();
matrix.setValues(new float[] {
1, 0, 0,
0, 1, 0,
0, 0, 1
});
mcanvas.drawBitmap(bmp, matrix, paint);
imageView.setImageBitmap(bmp); // this is line 43, where it dies
}
--------------------------- CUT HERE ---------------------------
Any suggestions?
Thanks,
--jim
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