{"id":641,"date":"2025-09-14T01:39:09","date_gmt":"2025-09-14T01:39:09","guid":{"rendered":"https:\/\/boochlin.com\/?p=641"},"modified":"2026-09-20T14:34:18","modified_gmt":"2026-09-20T14:34:18","slug":"creationextras-inventoryapplication-%e9%80%99%e6%9c%89%e9%bb%9e%e8%b7%b3","status":"publish","type":"post","link":"https:\/\/boochlin.com\/?p=641","title":{"rendered":"CreationExtras.inventoryApplication() \u9019\u6709\u9ede\u8df3"},"content":{"rendered":"
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\u300c\u770b\u5b98\u65b9\u7bc4\u4f8b\u6216 Codelab \u6642\uff0c\u5f88\u591a\u4eba\u770b\u5230 CreationExtras.inventoryApplication()<\/code> \u9019\u884c\u90fd\u6703\u4e00\u81c9\u9ed1\u4eba\u554f\u865f\uff1a\u9019\u4e09\u5c0f\uff1f\u70ba\u4ec0\u9ebc\u5728\u4e00\u500b\u6846\u67b6\u5c64\u7684 CreationExtras<\/code> \u4e0a\uff0c\u6703\u7a81\u7136\u5192\u51fa\u4e00\u500b\u81ea\u5df1 App \u7684\u81ea\u8a02\u64f4\u5145\u51fd\u5f0f\uff1f\u9019\u601d\u7dad\u8df3\u8e8d\u4e5f\u592a\u5927\u4e86\u5427\uff1f\u5225\u614c\uff0c\u9019\u80cc\u5f8c\u5176\u5be6\u662f Android \u5b98\u65b9\u70ba\u4e86\u62ef\u6551\u4e94\u5e74\u524d\u5beb Factory \u5beb\u5230\u60f3\u6b7b\u7684\u6b77\u53f2\u907a\u7559\u4ee3\u50f9\u3002\u300d<\/strong><\/p>\n<\/blockquote>\n

\"\"<\/p>\n

\u5728 Android \u67b6\u69cb\u6f14\u9032\u53f2\u88e1\uff0cViewModel \u7684\u5be6\u4f8b\u5316<\/strong> \u4e00\u76f4\u662f\u4e00\u584a\u4ee4\u4eba\u982d\u75db\u7684\u725b\u76ae\u766c\u3002<\/p>\n

\u56e0\u70ba ViewModel \u7684\u751f\u547d\u9031\u671f\u662f\u7531\u7cfb\u7d71\u6846\u67b6\uff08ViewModelStoreOwner<\/code>\uff09\u7d71\u4e00\u8a17\u7ba1\u7684\uff0c\u7576\u87a2\u5e55\u65cb\u8f49\u6216\u914d\u7f6e\u8b8a\u66f4\u6642\uff0c\u7cfb\u7d71\u5fc5\u9808\u4fdd\u8b49 ViewModel \u4e0d\u88ab\u92b7\u6bc0\u91cd\u9020\u3002
\n\u9019\u610f\u5473\u8457\uff1a\u4f60\u7d55\u5c0d\u4e0d\u80fd\u81ea\u5df1 new MyViewModel()<\/code>\uff01<\/strong><\/p>\n

\u4e00\u65e6 ViewModel \u9700\u8981\u5efa\u69cb\u5b50\u53c3\u6578\uff08\u4f8b\u5982 Repository<\/code> \u6216 SavedStateHandle<\/code>\uff09\uff0c\u4f60\u5c31\u5fc5\u9808\u900f\u904e ViewModelProvider.Factory<\/code> \u4f86\u8f49\u4ea4\u4f9d\u8cf4\u3002\u800c\u9019\u6bb5\u6b77\u53f2\uff0c\u5beb\u6eff\u4e86 Android \u5de5\u7a0b\u5e2b\u7684\u8840\u6dda\u6a23\u677f\u3002<\/p>\n

\n

\u6b77\u53f2\u5305\u88b1\uff1a\u4e94\u5e74\u524d\u6211\u5011\u662f\u600e\u9ebc\u5beb Factory \u7684\uff1f<\/h2>\n

\u5728 AndroidX Lifecycle 2.5.0 \u4ee5\u524d\uff0c\u5b98\u65b9\u7684 ViewModelProvider.Factory<\/code> \u4ecb\u9762\u53ea\u6709\u4e00\u500b\u967d\u6625\u65b9\u6cd5\uff1a<\/p>\n

\/\/ \u820a\u6642\u4ee3\u7684\u967d\u6625 Factory \u4ecb\u9762<\/span>\npublic<\/span> interface<\/span> Factory<\/span> {\n    public<\/span> <T extends<\/span> ViewModel<\/span>> T<\/span> create<\/span>(Class<T> modelClass)<\/span>;\n}<\/code><\/pre>\n
\u6ce8\u610f\u770b\uff0c\u9019\u500b create(Class<T>)<\/code> \u53ea\u6709\u4e00\u500b modelClass<\/code> \u53c3\u6578\uff01
\n\u5982\u679c\u4f60\u60f3\u50b3\u905e Application<\/code> \u6216 UserRepository<\/code> \u7d66 ViewModel\uff0c\u552f\u4e00\u7684\u8fa6\u6cd5\u5c31\u662f\u628a\u4f9d\u8cf4\u585e\u9032 Factory \u7684\u5efa\u69cb\u5b50\u88e1\uff1a<\/p>\n
\/\/ \u820a\u6642\u4ee3\u7684\u6a23\u677f\u5730\u7344\uff1a\u6bcf\u500b ViewModel \u90fd\u8981\u914d\u4e00\u5957\u5c08\u5c6c Factory<\/span>\nclass<\/span> UserViewModelFactory<\/span>(\n    private<\/span> val<\/span> repository: UserRepository,\n    private<\/span> val<\/span> application: Application\n) : ViewModelProvider.Factory {\n    override<\/span> fun<\/span> <T : ViewModel><\/span> create<\/span>(modelClass: Class<\/span><T<\/span>>)<\/span><\/span>: T {\n        if<\/span> (modelClass.isAssignableFrom(UserViewModel::class<\/span>.java)) {\n            @Suppress("UNCHECKED_CAST"<\/span>)<\/span>\n            return<\/span> UserViewModel(repository, application) as<\/span> T\n        }\n        throw<\/span> IllegalArgumentException("Unknown ViewModel class"<\/span>)\n    }\n}<\/code><\/pre>\n
\u820a\u505a\u6cd5\u7684\u4e09\u5927\u75db\u9ede\uff1a<\/h3>\n
    \n
  1. \u6a23\u677f\u7a0b\u5f0f\u78bc\u7206\u70b8<\/strong>\uff1a\u5c08\u6848\u88e1\u6709 50 \u500b ViewModel\uff0c\u4f60\u5c31\u5f97\u5beb 50 \u500b Factory \u985e\u5225\uff0c\u6216\u8005\u5beb\u4e00\u500b\u5de8\u5927\u7684 if-else<\/code> \u5206\u767c\u5668\u3002<\/li>\n
  2. \u8a18\u61b6\u9ad4\u6d29\u6f0f\u98a8\u96aa<\/strong>\uff1a\u70ba\u4e86\u50b3\u53c3\u6578\uff0c\u958b\u767c\u8005\u5e38\u5e38\u628a Activity \u6216 Context \u7576\u4f5c\u53c3\u6578\u585e\u7d66 Factory\uff0c\u4e00\u65e6\u6301\u6709\u4e0d\u614e\uff0c\u76f4\u63a5\u5f15\u767c\u8a18\u61b6\u9ad4\u6d29\u6f0f\u3002<\/li>\n
  3. \u55ae\u5143\u6e2c\u8a66\u56f0\u96e3\uff08Framework \u8026\u5408\uff09<\/strong>\uff1a\u7e7c\u627f AndroidViewModel(application)<\/code> \u6703\u8b93 ViewModel \u786c\u751f\u751f\u7d81\u6b7b Android SDK \u7684 Context\uff0c\u4e0d\u639b Robolectric \u6839\u672c\u7121\u6cd5\u5728\u7d14 JVM \u74b0\u5883\u8dd1\u55ae\u5143\u6e2c\u8a66\u3002<\/li>\n<\/ol>\n
    \n
    \u6551\u8d16\u964d\u81e8\uff1aLifecycle 2.5.0 \u7684 CreationExtras<\/h2>\n
    \u70ba\u4e86\u4e00\u52de\u6c38\u9038\u6d88\u6ec5\u4e0a\u8ff0\u75db\u9ede\uff0cGoogle \u5728 androidx.lifecycle:lifecycle-viewmodel:2.5.0<\/code> \u6b63\u5f0f\u91cd\u69cb\u4e86 Factory \u4ecb\u9762\uff0c\u5f15\u5165\u4e86 CreationExtras<\/code><\/strong>\uff1a<\/p>\n
    \/\/ \u73fe\u4ee3 Factory \u4ecb\u9762\uff1a\u591a\u5e36\u4e86\u4e00\u500b extras \u53c3\u6578\uff01<\/span>\nfun<\/span> <T : ViewModel><\/span> create<\/span>(modelClass: Class<\/span><T<\/span>>, extras: CreationExtras<\/span>)<\/span><\/span>: T<\/code><\/pre>\n
    CreationExtras \u672c\u8cea\u662f\u4ec0\u9ebc\uff1f<\/h3>\n
    CreationExtras<\/code> \u7684\u5e95\u5c64\u672c\u8cea\u4e0a\u662f\u4e00\u500b**\u300c\u578b\u5225\u5b89\u5168\u7684\u7570\u8cea\u5b57\u5178\uff08Type-safe Heterogeneous Map\uff09\u300d**\uff01<\/p>\n
    \u5b83\u7531\u4e00\u7cfb\u5217\u7684 CreationExtras.Key<T><\/code> \u8207\u5177\u9ad4\u5be6\u4f8b\u6620\u5c04\u7d44\u6210\u3002\u7576\u4f60\u5728 Activity\u3001Fragment \u6216 Compose \u547c\u53eb viewModel()<\/code> \u6642\uff0cAndroid \u7cfb\u7d71\u6703\u5728\u5e55\u5f8c\u81ea\u52d5\u628a\u7576\u524d\u5143\u4ef6\u7684\u74b0\u5883\u8cc7\u8a0a\u6253\u5305\u9032 CreationExtras<\/code>\uff1a<\/p>\n
    \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 \u7cfb\u7d71\u9810\u8a2d\u81ea\u52d5\u6ce8\u5165\u7684 CreationExtras \u5b57\u5178                      \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Key \u540d\u7a31                            \u2502 \u5b58\u653e\u4e4b\u5167\u5bb9\u5be6\u4f8b        \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 AndroidViewModelFactory.APPLICATION_KEY \u2502 Application \u5be6\u4f8b  \u2502\n\u2502 SAVED_STATE_REGISTRY_OWNER_KEY      \u2502 SavedStateRegistryOwner\u2502\n\u2502 VIEW_MODEL_STORE_OWNER_KEY          \u2502 ViewModelStoreOwner   \u2502\n\u2502 DEFAULT_ARGS_KEY                    \u2502 Bundle \u555f\u52d5\u53c3\u6578       \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/code><\/pre>\n
    \u56e0\u70ba\u5b57\u5178\u88e1\u5df2\u7d93\u81ea\u52d5\u8eba\u8457 APPLICATION_KEY<\/code> \u8207 SAVED_STATE_REGISTRY_OWNER_KEY<\/code>\uff0c\u4f60\u5728\u5efa\u69cb ViewModel \u6642\uff0c\u6839\u672c\u4e0d\u9700\u8981\u624b\u52d5\u5f9e\u5916\u90e8\u50b3\u5165 Application\uff0c\u76f4\u63a5\u5f9e extras<\/code> \u5c31\u80fd\u578b\u5225\u5b89\u5168\u5730\u53d6\u51fa\u4f86\uff01<\/p>\n
    \n
    \u8b0e\u5e95\u63ed\u66c9\uff1a\u70ba\u4ec0\u9ebc CreationExtras.inventoryApplication()<\/code> \u9019\u6709\u9ede\u8df3\uff1f<\/h2>\n
    \u73fe\u5728\u6211\u5011\u56de\u5230\u6a19\u984c\u9019\u53e5\u8b93\u8a31\u591a\u4eba\u56f0\u60d1\u7684\u7a0b\u5f0f\u78bc\uff1a<\/p>\n
    \/**\n * \u67e5\u8a62 Application \u7269\u4ef6\u4e26\u8f49\u578b\u70ba\u81ea\u8a02\u7684 InventoryApplication\n *\/<\/span>\nfun<\/span> CreationExtras.inventoryApplication<\/span>()<\/span><\/span>: InventoryApplication =\n    (this<\/span>[AndroidViewModelFactory.APPLICATION_KEY] as<\/span> InventoryApplication)<\/code><\/pre>\n
    \u5f88\u591a\u521d\u5b78\u8005\u770b\u5230\u9019\u6bb5\u6703\u89ba\u5f97\uff1a\u300c\u5947\u602a\uff0cCreationExtras<\/code> \u662f\u5b98\u65b9\u5eab\u7684\u985e\u5225\uff0cInventoryApplication<\/code> \u662f\u6211\u5c08\u6848\u81ea\u8a02\u7684\u985e\u5225\uff0c\u600e\u9ebc\u6703\u5beb\u6210 CreationExtras<\/code> \u7684\u64f4\u5145\u51fd\u5f0f\uff1f\u9019\u908f\u8f2f\u8df3\u8e8d\u4e5f\u592a\u5927\u4e86\uff01\u300d<\/p>\n
    \u642d\u914d viewModelFactory<\/code> DSL \u4f86\u770b\uff0c\u771f\u76f8\u5927\u767d\uff1a<\/h3>\n
    Google \u540c\u6642\u63d0\u4f9b\u4e86 viewModelFactory<\/code> DSL\uff0c\u8b93\u6211\u5011\u4e0d\u5fc5\u518d\u5ba3\u544a\u4e00\u5806\u5197\u9577\u7684 Factory \u985e\u5225\uff1a<\/p>\n
    object<\/span> AppViewModelProvider {\n    val<\/span> Factory = viewModelFactory {\n        \/\/ \u5b9a\u7fa9 GameViewModel \u7684\u5efa\u69cb\u5de5\u5ee0<\/span>\n        initializer {\n            \/\/ \u6ce8\u610f\uff01\u5728 initializer \u7684 Lambda \u5340\u584a\u5167\uff0cthis \u7684\u63a5\u6536\u8005\u578b\u614b\u6b63\u662f CreationExtras\uff01<\/span>\n            val<\/span> app = inventoryApplication() \/\/ \u9019\u88e1\u5c31\u662f\u547c\u53eb\u64f4\u5145\u51fd\u5f0f\uff01<\/span>\n            GameViewModel(app.container.itemsRepository)\n        }\n\n        \/\/ \u5b9a\u7fa9 SettingsViewModel \u7684\u5efa\u69cb\u5de5\u5ee0<\/span>\n        initializer {\n            val<\/span> app = inventoryApplication()\n            SettingsViewModel(app.container.settingsRepository)\n        }\n    }\n}<\/code><\/pre>\n
    \u770b\u6e05\u695a\u4e86\u9019\u500b\u547c\u53eb\u93c8\uff0c\u6240\u6709\u8ff7\u9727\u77ac\u9593\u6563\u958b\uff1a<\/p>\n
      \n
    1. \u5728 initializer { ... }<\/code> \u7684\u9589\u5305\u4e2d\uff0cReceiver\uff08\u63a5\u6536\u8005\uff09\u578b\u614b\u6b63\u662f CreationExtras<\/code><\/strong>\u3002<\/li>\n
    2. \u539f\u672c\u6211\u5011\u8981\u5beb\u51fa\u56c9\u55e6\u53c8\u919c\u964b\u7684\u9577\u5b57\u4e32\u53d6\u503c\u8207\u5f37\u5236\u8f49\u578b\uff1a\n
      val<\/span> app = this<\/span>[AndroidViewModelFactory.APPLICATION_KEY] as<\/span> InventoryApplication<\/code><\/pre>\n<\/li>\n
    3. \u900f\u904e\u5728 CreationExtras<\/code> \u4e0a\u639b\u8f09\u4e00\u500b\u540d\u70ba inventoryApplication()<\/code> \u7684\u64f4\u5145\u51fd\u5f0f\uff0c\u6211\u5011\u628a\u9019\u6bb5\u91cd\u8907\u3001\u8106\u5f31\u7684\u578b\u5225\u8f49\u63db\u5c01\u88dd\u6210\u4e86\u4e00\u53e5\u4e7e\u6de8\u4fd0\u843d\u7684\u547c\u53eb\u3002<\/li>\n
    4. \u62ff\u5230 InventoryApplication<\/code> \u5f8c\uff0c\u518d\u900f\u904e\u5176\u5167\u5efa\u7684\u4f9d\u8cf4\u5bb9\u5668\uff08container.itemsRepository<\/code>\uff0c\u5373\u624b\u52d5\u670d\u52d9\u5b9a\u4f4d\u5668\u6a21\u5f0f\uff09\u5c07 Repository \u704c\u9032 ViewModel\u3002<\/li>\n<\/ol>\n
      \u9019\u4e0d\u662f\u4ec0\u9ebc\u9ed1\u9b54\u6cd5\uff0c\u53ea\u662f\u4e00\u6b21\u6a19\u6e96\u7684 Kotlin \u64f4\u5145\u51fd\u5f0f + \u63a5\u6536\u8005\u9589\u5305\uff08Receiver Closure\uff09<\/strong> \u7684\u8a9e\u6cd5\u7cd6\u6574\u5408\u3002<\/p>\n
      \n
      \u67b6\u69cb\u6b0a\u8861\uff1aCreationExtras vs. Hilt<\/h2>\n
      \u5728\u73fe\u4ee3 Android \u5546\u696d\u5c08\u6848\u4e2d\uff0c\u6211\u5011\u8a72\u5728\u4f55\u6642\u4f7f\u7528 CreationExtras<\/code>\uff1f<\/p>\n
      \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 \u8a55\u4f30\u7dad\u5ea6        \u2502 CreationExtras<\/span> + viewModelFactory        \u2502 Hilt<\/span> \/ Dagger<\/span>                            \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 \u4f9d\u8cf4\u6ce8\u5165\u6a5f\u5236    \u2502 \u624b\u52d5\u4f9d\u8cf4\u6ce8\u5165 \/ \u670d\u52d9\u5b9a\u4f4d\u5668 (Manual<\/span> DI)     \u2502 \u81ea\u52d5\u5316\u7de8\u8b6f\u671f\u7a0b\u5f0f\u78bc\u751f\u6210\u4f9d\u8cf4\u6ce8\u5165 (Annotation<\/span>)\u2502\n\u2502 \u9069\u7528\u5834\u666f        \u2502 \u5c0f\u578b\u5c08\u6848\u3001KMP \u8de8\u5e73\u53f0\u3001\u5b98\u65b9\u6559\u5b78 Codelab<\/span>    \u2502 \u4e2d\u5927\u578b\u5546\u7528\u5c08\u6848\u3001\u5718\u968a\u5354\u4f5c\u3001\u6a21\u7d44\u5316\u67b6\u69cb     \u2502\n\u2502 \u6a23\u677f\u7a0b\u5f0f\u78bc      \u2502 \u9700\u624b\u52d5\u64b0\u5beb Provider<\/span> \u8207\u64f4\u5145\u51fd\u5f0f           \u2502 \u6975\u4f4e\uff0c\u53ea\u9700 @HiltViewModel<\/span> \u8207 @Inject<\/span>     \u2502\n\u2502 \u7de8\u8b6f\u901f\u5ea6\u5f71\u97ff    \u2502 \u96f6\u984d\u5916\u8ca0\u64d4 (\u7d14\u539f\u751f Kotlin<\/span> \u8a9e\u6cd5)          \u2502 KSP\/KAPT \u8a3b\u89e3\u8655\u7406\u5668\u9700\u8017\u8cbb\u984d\u5916\u7de8\u8b6f\u6642\u9593    \u2502\n\u2502 \u5b78\u7fd2\u66f2\u7dda        \u2502 \u5e73\u7de9\uff0c\u7406\u89e3 Map<\/span> \u9375\u503c\u8207\u64f4\u5145\u51fd\u5f0f\u5373\u53ef        \u2502 \u9661\u5ced\uff0c\u9700\u7406\u89e3 Component<\/span>\u3001Scope<\/span> \u8207 Binds<\/span>   \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/code><\/pre>\n
      \u5de5\u696d\u7d1a\u5be6\u6230\u5efa\u8b70\uff1a<\/h3>\n
        \n
      • \u5927\u578b\u5546\u7528 App<\/strong>\uff1a\u8acb\u8001\u8001\u5be6\u5be6\u4e0a Hilt<\/strong>\u3002\u5728 ViewModel \u6a19\u8a3b @HiltViewModel<\/code>\uff0c\u76f4\u63a5\u7531 Dagger \u5728\u7de8\u8b6f\u671f\u751f\u6210 Factory\uff0c\u5b8c\u5168\u7701\u53bb\u7dad\u8b77 CreationExtras<\/code> \u7684\u5fc3\u667a\u8ca0\u64d4\u3002<\/li>\n
      • Kotlin Multiplatform (KMP) \u6216\u8f15\u91cf\u5eab<\/strong>\uff1aHilt \u6df1\u5ea6\u7d81\u6b7b Android \u5e73\u53f0\uff0c\u5728 KMP \u6216\u55ae\u7d14\u4e0d\u60f3\u5f15\u5165\u80a5\u5927\u4f9d\u8cf4\u6ce8\u5165\u5eab\u7684\u5c0f\u578b\u6a21\u7d44\u4e2d\uff0cCreationExtras<\/code> + \u64f4\u5145\u51fd\u5f0f\u662f\u67b6\u69cb\u89e3\u8026\u7684\u6700\u512a\u89e3\u3002<\/li>\n<\/ul>\n
        \n
        \u5de5\u4f4d\u5927\u5be6\u8a71\u8207\u6536\u5de5<\/h2>\n
          \n
        1. \u4e0d\u8981\u518d\u624b\u5beb\u7e7c\u627f ViewModelProvider.Factory<\/code> \u7684\u7368\u7acb\u985e\u5225\u4e86<\/strong>\uff1a\u5229\u7528 viewModelFactory { initializer { ... } }<\/code> DSL \u53ef\u4ee5\u5728\u4e00\u500b\u6a94\u6848\u5167\u512a\u96c5\u96c6\u4e2d\u7ba1\u7406\u6240\u6709\u624b\u52d5\u5de5\u5ee0\u3002<\/li>\n
        2. \u5411 AndroidViewModel<\/code> \u8aaa\u518d\u898b<\/strong>\uff1a\u900f\u904e CreationExtras<\/code> \u5728\u5efa\u69cb\u6642\u53d6\u51fa Application \u6216 Repository\uff0cViewModel \u672c\u8eab\u53ea\u9700\u7e7c\u627f\u7d14\u7cb9\u7684 ViewModel()<\/code>\uff0c\u5fb9\u5e95\u89e3\u8026 Android SDK\uff0c\u8b93\u55ae\u5143\u6e2c\u8a66\u56de\u6b78\u7d14 JVM \u6beb\u79d2\u7d1a\u79d2\u6bba\u3002<\/li>\n<\/ol>\n
          \u611f\u8b1d\u89c0\u770b\uff0c\u6536\u5de5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
          \u300c\u770b\u5b98\u65b9\u7bc4\u4f8b\u6216 Codelab \u6642\uff0c\u5f88\u591a\u4eba\u770b\u5230 CreationExtras.inventoryApplica […]<\/p>\n","protected":false},"author":1,"featured_media":1247,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[206,211,245,308],"_links":{"self":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/641"}],"collection":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=641"}],"version-history":[{"count":15,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/641\/revisions"}],"predecessor-version":[{"id":1611,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/posts\/641\/revisions\/1611"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=\/wp\/v2\/media\/1247"}],"wp:attachment":[{"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=641"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=641"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boochlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}