Hi all, Thanks, the problem is solved, here is the link

http://stackoverflow.com/questions/11740362/merge-two-bitmaps-in-android

On Wed, Aug 1, 2012 at 6:55 PM, bob <[email protected]> wrote:

> Look at line 263 in AndroidCamera.java.
>
> Something is null there that shouldn't be.
>
> We don't know which line of yours is 263.
>
> On Tuesday, July 31, 2012 5:52:27 PM UTC-5, Numair Qadir wrote:
>>
>> With the help of "pro Android.Media", i tried, but it gave me force close
>> error, here is my code and logcat
>>
>> // Camera arg conversion to Bitmap
>>  Bitmap cameraBitmap = BitmapFactory.decodeByteArray(**arg0, 0,
>> arg0.length);
>>  Bitmap back = Bitmap.createBitmap(**cameraBitmap.getWidth(),
>> cameraBitmap.getHeight(), Bitmap.Config.ARGB_8888);
>>  Canvas cam = new Canvas(back);
>> cam.drawBitmap(cameraBitmap, matrix, null);
>>  // FrameLayout to Bitmap
>>  FrameLayout mainLayout = (FrameLayout) findViewById(R.id.frame);
>> Bitmap foreground = Bitmap.createBitmap(**mainLayout.getWidth(),
>>  mainLayout.getHeight(), Bitmap.Config.ARGB_8888);
>> Canvas c = new Canvas(foreground);
>>  mainLayout.draw(c);
>>  Bitmap cs = Bitmap.createBitmap(**cameraBitmap.getWidth(),
>> cameraBitmap.getHeight(), Bitmap.Config.ARGB_8888);
>>  Canvas canvas = new Canvas(cs);
>> Paint paint = new Paint();
>>  canvas.drawBitmap(**cameraBitmap, 0, 0, paint);
>> paint.setXfermode(new PorterDuffXfermode(android.**
>> graphics.PorterDuff.Mode.**MULTIPLY));
>>  canvas.drawBitmap(foreground, 0, 0, paint);
>> view.setImageBitmap(cs);
>>
>>
>> and log cat
>>
>> 08-01 04:46:07.969: E/AndroidRuntime(737): FATAL EXCEPTION: main
>> 08-01 04:46:07.969: E/AndroidRuntime(737): java.lang.NullPointerException
>> 08-01 04:46:07.969: E/AndroidRuntime(737): at com.exercise.AndroidCamera.
>> **AndroidCamera$4.**onPictureTaken(AndroidCamera.**java:263)
>> 08-01 04:46:07.969: E/AndroidRuntime(737): at android.hardware.Camera$**
>> EventHandler.handleMessage(**Camera.java:320)
>> 08-01 04:46:07.969: E/AndroidRuntime(737): at android.os.Handler.**
>> dispatchMessage(Handler.java:**99)
>> 08-01 04:46:07.969: E/AndroidRuntime(737): at
>> android.os.Looper.loop(Looper.**java:123)
>> 08-01 04:46:07.969: E/AndroidRuntime(737): at android.app.ActivityThread.
>> **main(ActivityThread.java:4627)
>> 08-01 04:46:07.969: E/AndroidRuntime(737): at 
>> java.lang.reflect.Method.**invokeNative(Native
>> Method)
>> 08-01 04:46:07.969: E/AndroidRuntime(737): at java.lang.reflect.Method.**
>> invoke(Method.java:521)
>> 08-01 04:46:07.969: E/AndroidRuntime(737): at com.android.internal.os.**
>> ZygoteInit$**MethodAndArgsCaller.run(**ZygoteInit.java:868)
>> 08-01 04:46:07.969: E/AndroidRuntime(737): at com.android.internal.os.**
>> ZygoteInit.main(ZygoteInit.**java:626)
>> 08-01 04:46:07.969: E/AndroidRuntime(737): at dalvik.system.NativeStart.*
>> *main(Native Method)
>>
>> Can you please help me to figure out the issue? Thanks
>>
>> On Tue, Jul 31, 2012 at 8:44 PM, Jim Graham <[email protected]> wrote:
>>
>>> On Tue, Jul 31, 2012 at 05:57:47AM -0700, Numair Qadir wrote:
>>> > I want to merge two bitmaps, here is my code
>>>
>>> I was just going to point you to the right page in the dev guide, but I
>>> don't remember if there even is one (I learned this from a book, "Pro
>>> Android Media").  Be advised that with larger bitmaps, you can easily
>>> cause an Out Of Memory error and, if that isn't caught, a force close,
>>> so if you need to do this with LARGE bitmaps, you'll have to use the NDK.
>>>
>>>    // blend src1 and src2 into dest (must be same size and, I think they
>>>    // have to be the same configuration, too, e.g., both ARGB_8888)
>>>
>>>    Bitmap dest = Bitmap.createBitmap(width, height, src1.getConfig());
>>>    Canvas canvas = new Canvas(src2);
>>>    Paint paint = new Paint();
>>>
>>>    canvas = new Canvas(src2);
>>>    paint = new Paint();
>>>    canvas.drawBitmap(src1, 0, 0, paint);
>>>    paint.setXfermode(new PorterDuffXfermode(android.**
>>> graphics.PorterDuff.Mode.SRC_**OVER));
>>>    canvas.drawBitmap(dest, 0, 0, paint);
>>>
>>> PorterDuff has quite a few different modes, so check out the dev guide's
>>> page on PorterDuff.Mode for more information.
>>>
>>> Later,
>>>    --jim
>>>
>>> --
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>>>
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>>>      --Catbert:  Evil Director of Human Resources (Dilbert, 05Nov09)
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