{"id":1600,"date":"2022-12-12T16:24:58","date_gmt":"2022-12-12T08:24:58","guid":{"rendered":"https:\/\/badgameshow.com\/fly\/?p=1600"},"modified":"2023-02-03T11:32:33","modified_gmt":"2023-02-03T03:32:33","slug":"%e3%80%90jetpack%e3%80%91android-viewmodel-%e8%a6%96%e5%9c%96%e6%a8%a1%e5%9e%8b-%e7%af%84%e4%be%8b","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/fly\/%e3%80%90jetpack%e3%80%91android-viewmodel-%e8%a6%96%e5%9c%96%e6%a8%a1%e5%9e%8b-%e7%af%84%e4%be%8b\/","title":{"rendered":"\ud83d\udcbb\u3010Jetpack\u3011Android ViewModel \u8996\u5716\u6a21\u578b \u7bc4\u4f8b\ud83d\udcc8"},"content":{"rendered":"

\ud83d\udcbb\u3010Jetpack\u3011Android ViewModel \u8996\u5716\u6a21\u578b \u7bc4\u4f8b\ud83d\udcc8<\/h1>\n

Android ViewModel \u662f\u4e00\u7a2e\u70ba Android \u61c9\u7528\u958b\u767c\u8005\u63d0\u4f9b\u5b58\u5132\u548c\u64cd\u4f5c\u8f38\u5165\u548c\u72c0\u614b\u6578\u64da\u7684\u6a21\u578b\u3002<\/h4>\n

\u5b83\u6709\u52a9\u65bc\u4fdd\u7559\u6d3b\u52d5\u548c\u7247\u6bb5\u72b6\u6001\uff0c\u4f7f\u958b\u767c\u904e\u7a0b\u66f4\u52a0\u9ad8\u6548\u548c\u5b89\u5168\uff0c\u5e76\u70ba\u7528\u6236\u548c\u958b\u767c\u8005\u5e36\u4f86\u4fbf\u5229\u3002 \u5c0d\u65bc Android \u61c9\u7528\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u4e86\u89e3 ViewModel \u7684\u91cd\u8981\u6027\u662f\u4e00\u500b\u91cd\u8981\u7684\u5e7e\u4e4e\u201c\u5fc5\u4e0d\u53ef\u5c11\u201d\u7684\u6b65\u9a5f\u3002<\/h4>\n

\u672c\u6587\u5c07\u63d0\u4f9b\u4e00\u500b\u7c21\u8981\u4ecb\u7d39\uff0c\u4ee5\u4fbf\u601d\u8003\u5982\u4f55\u6709\u6548\u5730\u958b\u767c\u4f7f\u7528 ViewModel \u7684 Android \u61c9\u7528\u7a0b\u5e8f\u3002<\/h4>\n

\"\"<\/a><\/p>\n

\n

\u6587\u7ae0\u76ee\u9304<\/h4>\n
    \n
  1. ViewModel<\/a><\/li>\n
  2. ViewModel \u5275\u5efa\u65b9\u5f0f(\u4e00)<\/a><\/li>\n
  3. ViewModel \u5275\u5efa\u65b9\u5f0f(\u4e8c)<\/a><\/li>\n
  4. Developer Documents ViewModel<\/a><\/li>\n<\/ol>\n
    \n

    <\/a><\/p>\n

    1.ViewModel<\/h4>\n
    PersonViewModel.kt<\/h5>\n
    class PersonViewModel : ViewModel() {\n    val name = \"Wade\"\n    val age = 25\n}\n<\/code><\/pre>\n
    <\/a><\/p>\n
    2.ViewModel \u5275\u5efa\u65b9\u5f0f(\u4e00)<\/h4>\n
    MainActivity.kt<\/h5>\n
    class MainActivity : AppCompatActivity() {\n\n    private lateinit var viewModel: PersonViewModel\n\n    override fun onCreate(savedInstanceState: Bundle?) {\n        super.onCreate(savedInstanceState)\n        setContentView(R.layout.activity_main)\n\n        viewModel = ViewModelProvider(this)[PersonViewModel::class.java]\n\n        Toast.makeText(this, viewModel.name, Toast.LENGTH_SHORT).show()\n        Toast.makeText(this, viewModel.age.toString(), Toast.LENGTH_SHORT).show()\n    }\n}\n<\/code><\/pre>\n
    <\/a><\/p>\n
    3.ViewModel \u5275\u5efa\u65b9\u5f0f(\u4e8c)<\/h4>\n
    build.gradle<\/h5>\n
    dependencies {\n    def fragment_version = \"1.5.5\"\n    implementation \"androidx.fragment:fragment-ktx:$fragment_version\"\n}\n<\/code><\/pre>\n
    MainActivity.kt<\/h5>\n
    class MainActivity : AppCompatActivity() {\n\n    private val viewModel: PersonViewModel by viewModels()\n    \/\/ private val viewModel by viewModels<PersonViewModel>()\n\n    override fun onCreate(savedInstanceState: Bundle?) {\n        super.onCreate(savedInstanceState)\n        setContentView(R.layout.activity_main)\n\n        Toast.makeText(this, viewModel.name, Toast.LENGTH_SHORT).show()\n        Toast.makeText(this, viewModel.age.toString(), Toast.LENGTH_SHORT).show()\n    }\n}\n<\/code><\/pre>\n
    <\/a><\/p>\n
    4.Developer Documents ViewModel<\/h4>\n
    Open in Documents ViewModel<\/a><\/p>\n\n
    <\/div>","protected":false},"excerpt":{"rendered":"
    \ud83d\udcbb\u3010Jetpack\u3011Android ViewModel \u8996\u5716\u6a21\u578b \u7bc4\u4f8b\ud83d\udcc8 Android ViewModel  … <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[106],"tags":[13,107,218],"class_list":["post-1600","post","type-post","status-publish","format-standard","hentry","category-jetpack","tag-android","tag-jetpack","tag-viewmodel"],"_links":{"self":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts\/1600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/comments?post=1600"}],"version-history":[{"count":6,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts\/1600\/revisions"}],"predecessor-version":[{"id":1843,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts\/1600\/revisions\/1843"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/media?parent=1600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/categories?post=1600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/tags?post=1600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}