why i cant use my image?

Programming Questions

thejodapa..

in Programming Questions • 10 months ago

hi there,i'm new with processing and i got a problem when i'm trying to upload/use an image. when i try to use the image i get a grey screen what i cant close with the x button, and i get this text: (19 is the image)

Could not find a method to load 19

Exception in thread "Animation Thread" java.lang.NullPointerException

at processing.core.PGraphics.image(PGraphics.java:3440)

at processing.core.PApplet.image(PApplet.java:11658)

at eerste_kreatie.draw(eerste_kreatie.java:40)

at processing.core.PApplet.handleDraw(PApplet.java:2128)

at processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:190)

at processing.core.PApplet.run(PApplet.java:2006)

at java.lang.Thread.run(Thread.java:662)

i dont know what to do.

can you help me please?

Replies(8)

GoToLoop

Re: why i cant use my image?

10 months ago

No code?
I guess "Exception in thread "Animation Thread" java.lang.NullPointerException" can mean that image failed to load.

thejodapa..

Re: Re: why i cant use my image?

10 months ago

okay then how i can let it load on a good way?

amnon.owed

Re: why i cant use my image?

10 months ago

The problem is in your code. If you don't show it, we can't point out the error. Except that in this case the error message gives a hint. Apparantly you are using 19 as the image name, but of course every image has an extension aka file type. For example jpg or png. You should use the full name of the image such as "19.jpg". That might be the cause of your error. But again, problems with code are much easier to solve when you post the actual code.

thejodapa..

Re: Re: why i cant use my image?

10 months ago

okay, here is my code. i'm just trying some things out :P

PImage img;

void setup()

{

size (1300,690);

img = loadImage("19.jpg");

imageMode(CENTER);

}

int hit = 0;

int die =0;

void draw()

{

if(mousePressed){ hit = +1;}

background(100,100,100);

image(img, width/2,height/2);

image(img, mouseX, mouseY);

ellipse(mouseX-100,mouseY,30,30);{

}

text("kill: " +hit, 10, 20);

}

GoToLoop

Re: why i cant use my image?

10 months ago

I chose a random image here, rename it to 19.jpg, and... it worked!
No null point exception at all!

I guess that -> if (mousePressed) hit = +1; you meant if (mousePressed) hit += 1; ???

Remember that you can drag 'n' drop an image into Processing IDE.
Or choose Sketch -> Add File...

It goes directly into data folder inside sketch.
You can check it out by CTRL+K.

thejodapa..

Re: Re: why i cant use my image?

10 months ago

tyy but somfing about if(mousePressed) hit +=1; what can i do to make it that each mousepress is only 1?

GoToLoop

Re: Re: why i cant use my image?

10 months ago

... what can i do to make it that each mousepress is only 1?

You need to transfer that code into the mousePressed() callback function for it:
http://processing.org/reference/mousePressed_.html

Note: mousePressed() is a callback function, and mousePressed is a global variable.

PhiLho

Re: why i cant use my image?

10 months ago

The image must be in the data folder of your sketch folder.

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