PackManager Class

Module: cc.AssetManager

Handle the packed asset, include unpacking, loading, cache and so on. It is a singleton. All member can be accessed with cc.assetManager.packManager

Index

Methods
  • unpackJson Unpack the json, revert to what it was before packing
  • register Register custom handler if you want to change default behavior or extend packManager to unpack other format pack
  • unpack Use corresponding handler to unpack package
  • load Download request item, If item is not in any package, download as usual.

Details

Methods

unpackJson

Unpack the json, revert to what it was before packing

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Defined in cocos2d/core/asset-manager/pack-manager.js:54
Parameters
  • pack String[] The pack
  • json Object The content of pack
  • options Object Some optional parameters
  • onComplete Function Callback when finish unpacking
    • err Error The occurred error, null indicetes success
    • content Object The unpacked assets
Examples
downloader.downloadFile('pack.json', {responseType: 'json'}, null, (err, file) => {
     packManager.unpackJson(['a', 'b'], file, null, (err, data) => console.log(err));
});
register

Register custom handler if you want to change default behavior or extend packManager to unpack other format pack

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Defined in cocos2d/core/asset-manager/pack-manager.js:115
Parameters
  • type string | Object Extension likes '.bin' or map likes {'.bin': binHandler, '.ab': abHandler}
  • handler Function handler
    • packUuid string The uuid of pack
    • data The content of pack
    • options Object Some optional parameters
    • onComplete Function Callback when finishing unpacking
Examples
packManager.register('.bin', (packUuid, file, options, onComplete) => onComplete(null, null));
packManager.register({'.bin': (packUuid, file, options, onComplete) => onComplete(null, null), '.ab': (packUuid, file, options, onComplete) => onComplete(null, null)});
unpack

Use corresponding handler to unpack package

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Defined in cocos2d/core/asset-manager/pack-manager.js:147
Parameters
  • pack String[] The uuid of packed assets
  • data Any The packed data
  • type string The type indicates that which handler should be used to download, such as '.jpg'
  • options Object Some optional parameter
  • onComplete Function callback when finishing unpacking
    • err Error The occurred error, null indicetes success
    • data Original assets
Examples
downloader.downloadFile('pack.json', {responseType: 'json'}, null, (err, file) => {
     packManager.unpack(['2fawq123d', '1zsweq23f'], file, '.json', null, (err, data) => console.log(err));
});
load

Download request item, If item is not in any package, download as usual. Otherwise, download the corresponding package and unpack it. And then retrieve the corresponding content form it.

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Defined in cocos2d/core/asset-manager/pack-manager.js:180
Parameters
  • item RequestItem Some item you want to download
  • options Object Some optional parameters
  • onComplete Function Callback when finished
    • err Err The occurred error, null indicetes success
    • data The unpacked data retrieved from package
Examples
var requestItem = cc.AssetManager.RequestItem.create();
requestItem.uuid = 'fcmR3XADNLgJ1ByKhqcC5Z';
requestItem.info = config.getAssetInfo('fcmR3XADNLgJ1ByKhqcC5Z');
packManager.load(requestItem, null, (err, data) => console.log(err));

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