Android: Problem with loading Sprite from Spritesheet

cocos2d-x JavaScript
1

Hi,

I am loading and using my Spritesheet as follow:

    cc.spriteFrameCache.addSpriteFrames(res.boardSheet_PLIST);

    this.batchNode          =   cc.SpriteBatchNode.create(res.boardSheet_PNG);
    this.addChild(this.batchNode);

    var bottomY             =   50; 
    this.chalkSprite        =   cc.Sprite.create('#chalk.png');
    this.chalkSprite.setPosition(cc.p(size.width * 0.912, bottomY + 10));
    this.batchNode.addChild(this.chalkSprite);

This is working fine in web. But in Android its throwing the following error:

D/cocos2d-x debug info(23983): JS: assets/src/MainMenu.js:30:TypeError: this.chalkSprite is null

Edit 1:
The error happens in the setPosition() line. this.chalkSprite is null in Device. I checked the file name case and it is set right.

Any help please :smile:

2

Are you sure that the asset is being included when you deploy to your device? the web will reference the resources folder but for devices make sure its properly included

3

Yes. The assets are being copied to APK. I extracted it and verified.

Actually, Regular sprites are getting rendered. The issue is only with Sprite Sheets.

4

I currently wonder about the “#”… are you sure that you need that one? How are the sprites named in your .plist file?

Btw. you usually don’t need the SpriteBatchNode - cocos2d implements auto batching which should already handle the drawing.

5

To access sprites inside a spriteSheet, # has to be added. And Wow, I didnt know cocos2d autobatches the Images :smile:

Anyways, I am now loading the individual sprites rather than loading them through SpriteBatchNode and it’s working fine.

6

This is what I’m doing:

cc.spriteFrameCache.addSpriteFrames(res.playScene_plist);
var playSceneSpriteSheet = new cc.SpriteBatchNode(res.playScene_png);
this.addChild(playSceneSpriteSheet);

And then I access sprites like this:

this.playerSprite = new cc.PhysicsSprite.create("#player.png");

So how would I do this correctly without using SpriteBatchNode? @saiy2k

7

Ideally it should be

playSceneSpriteSheet.addChild(this.playerSprite);

But its not working for me!