{"id":11739,"date":"2019-07-17T09:00:43","date_gmt":"2019-07-17T06:00:43","guid":{"rendered":"https:\/\/www.fandroid.info\/?p=11739"},"modified":"2019-07-17T08:46:22","modified_gmt":"2019-07-17T05:46:22","slug":"viewmodel-%d0%b8-livedata-%d0%b2-data-binding","status":"publish","type":"post","link":"https:\/\/www.fandroid.info\/viewmodel-%d0%b8-livedata-%d0%b2-data-binding\/","title":{"rendered":"ViewModel \u0438 LiveData \u0432 Data Binding"},"content":{"rendered":"<p>\u042d\u0442\u043e \u043f\u0435\u0440\u0435\u0432\u043e\u0434 \u0442\u0440\u0435\u0442\u044c\u0435\u0439 \u0447\u0430\u0441\u0442\u0438 \u0438\u0437 <a href=\"https:\/\/medium.com\/androiddevelopers\/viewmodels-with-saved-state-jetpack-navigation-data-binding-and-coroutines-df476b78144e\" target=\"_blank\" rel=\"noopener noreferrer\">\u0446\u0438\u043a\u043b\u0430<\/a> \u043e\u0431 \u0438\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u0438 ViewModel c Koltin Coroutines, Data Binding \u0438 Navigation.<\/p>\n<blockquote class=\"check\"><p>\u0427\u0442\u043e\u0431\u044b \u0431\u043e\u043b\u0435\u0435 \u0442\u0435\u0441\u043d\u043e \u043d\u0430 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435 \u043f\u043e\u0437\u043d\u0430\u043a\u043e\u043c\u0438\u0442\u044c\u0441\u044f \u0441 \u044d\u0442\u0438\u043c\u0438 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430\u043c\u0438, \u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u0439\u0442\u0435\u0441\u044c \u043d\u0430 <a href=\"https:\/\/www.fandroid.info\/android-advanced-tutorial-chat-messenger\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u043f\u0440\u043e\u0434\u0432\u0438\u043d\u0443\u0442\u044b\u0439 \u043a\u0443\u0440\u0441 \u043f\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f &#171;\u0427\u0430\u0442-\u043c\u0435\u0441\u0441\u0435\u043d\u0436\u0435\u0440&#187;<\/a><\/p><\/blockquote>\n<h1 class=\"le lf bq ap ao eg lg lh li lj lk ll lm ln lo lp lq\" data-selectable-paragraph=\"\">ViewModel \u0438 LiveData \u0432 Data Binding<\/h1>\n<p>\u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043e \u0432 <a class=\"av ca jv jw jx jy\" href=\"https:\/\/developer.android.com\/studio\/releases#update-data-binding\">Android Studio 3.1<\/a><br \/>\n\u0414\u043b\u044f Java \u0438 Kotlin<br \/>\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script><br \/>\n<ins class=\"adsbygoogle\" style=\"display: block; text-align: center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-4811061307527681\" data-ad-slot=\"7124875115\"><\/ins><br \/>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/p>\n<h2>\u0412\u0435\u0441\u044c \u044d\u0442\u043e\u0442 \u0448\u0430\u0431\u043b\u043e\u043d LiveData<\/h2>\n<p>\u042d\u0442\u0430 \u0438\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u044f \u0441\u0442\u0430\u0440\u0430, \u043d\u043e \u0445\u043e\u0440\u043e\u0448\u0430. ViewModel \u043e\u0431\u044b\u0447\u043d\u043e \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442 LiveData, \u0438 LiveData \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u0430 \u0434\u043b\u044f \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u044f. \u041e\u0431\u044b\u0447\u043d\u043e \u044d\u0442\u043e \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043d\u0430\u0431\u043b\u044e\u0434\u0430\u0442\u0435\u043b\u044f \u0432\u043e \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442:<\/p>\n<pre class=\"lang:default decode:true\">override fun onActivityCreated(savedInstanceState: Bundle?) {\r\n    super.onActivityCreated(savedInstanceState)\r\n    \r\n    myViewModel.name.observe(this, { newName -&gt;\r\n        \/\/ Update the UI. In this case, a TextView.\r\n        nameTextView.text = newName\r\n    })\r\n  \r\n}<\/pre>\n<p><a href=\"https:\/\/developer.android.com\/topic\/libraries\/data-binding\" target=\"_blank\" rel=\"noopener noreferrer\">\u0411\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 Data Binding<\/a> \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u0430 \u0434\u043b\u044f \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u044f \u0437\u0430 \u0432\u0430\u0448\u0438\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u043c\u0438 \u0438 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u0433\u043e \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430. \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f ViewModel, LiveData \u0438 Data Binding \u0432\u043c\u0435\u0441\u0442\u0435, \u0432\u044b \u043c\u043e\u0436\u0435\u0442\u0435 \u0443\u0434\u0430\u043b\u0438\u0442\u044c \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0438\u0439 \u043a\u043e\u0434 \u043d\u0430\u0431\u043b\u044e\u0434\u0435\u043d\u0438\u044f LiveData \u0438 \u0441\u0441\u044b\u043b\u0430\u0442\u044c\u0441\u044f \u043d\u0430 \u0432\u0430\u0448\u0438 ViewModel \u0438 LiveData \u043f\u0440\u044f\u043c\u043e \u0438\u0437 XML-\u043c\u0430\u043a\u0435\u0442\u0430.<\/p>\n<h2 class=\"lw lf bq ap ao eg lx ly lz ma mb mc md me mf mg mh\" data-selectable-paragraph=\"\">\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 Data Binding, ViewModel \u0438 LiveData<\/h2>\n<p>\u0414\u043e\u043f\u0443\u0441\u0442\u0438\u043c, \u0432 \u0432\u0430\u0448\u0435\u043c XML-\u043c\u0430\u043a\u0435\u0442\u0435 \u0432\u044b \u0445\u043e\u0442\u0438\u0442\u0435 \u0441\u043e\u0441\u043b\u0430\u0442\u044c\u0441\u044f \u043d\u0430 \u0432\u0430\u0448\u0443 ViewModel:<\/p>\n<pre class=\"lang:default decode:true\">&lt;layout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"&gt;\r\n    &lt;data&gt;\r\n        &lt;variable name=\"viewmodel\" \r\n                  type=\"com.android.MyViewModel\"\/&gt;\r\n    &lt;\/data&gt;\r\n    &lt;... Rest of your layout ...&gt;\r\n&lt;\/layout&gt;\r\n<\/pre>\n<p>\u0427\u0442\u043e\u0431\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c LiveData \u0441 Data Binding, \u0432\u0430\u043c \u043f\u0440\u043e\u0441\u0442\u043e \u043d\u0443\u0436\u043d\u043e \u0432\u044b\u0437\u0432\u0430\u0442\u044c binding.setLifecycleOwner (this), \u0430 \u0437\u0430\u0442\u0435\u043c \u043f\u0435\u0440\u0435\u0434\u0430\u0442\u044c \u0432\u0430\u0448\u0443 ViewModel \u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0435, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440 \u0442\u0430\u043a:<\/p>\n<pre class=\"lang:default decode:true\">class MainActivity : AppCompatActivity() {\r\n    \r\n    \/\/ This ktx requires at least androidx.activity:activity-ktx:1.0.0\r\n    private val myViewModel: MyViewModel by viewModels()\r\n\r\n    override fun onCreate(savedInstanceState: Bundle?) {\r\n        super.onCreate(savedInstanceState)\r\n      \r\n         \/\/Inflate view and create binding\r\n        val binding: MainActivityBinding = \r\n            DataBindingUtil.setContentView(this, R.layout.main_activity)\r\n\r\n        \/\/Specify this activity as the lifecycleOwner for Data Binding\r\n        binding.lifecycleOwner = this\r\n        \r\n        \/\/ Pass the ViewModel into the binding\r\n        binding.viewmodel = myViewModel\r\n    }\r\n\r\n}<\/pre>\n<p>\u0422\u0435\u043f\u0435\u0440\u044c \u0432 \u0432\u0430\u0448\u0435\u043c \u043c\u0430\u043a\u0435\u0442\u0435 \u0432\u044b \u043c\u043e\u0436\u0435\u0442\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0432\u0430\u0448\u0443 ViewModel. \u041a\u0430\u043a \u0432\u0438\u0434\u043d\u043e \u043d\u0438\u0436\u0435, \u044f \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u043b \u0442\u0435\u043a\u0441\u0442 \u0432 viewmodel.name:<\/p>\n<pre class=\"lang:default decode:true\">&lt;layout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"&gt;\r\n    &lt;data&gt;\r\n        &lt;variable name=\"viewmodel\" \r\n                  type=\"com.android.MyViewModel\"\/&gt;\r\n    &lt;\/data&gt;\r\n    &lt;TextView\r\n            android:id=\"@+id\/name\"\r\n            android:text=\"@{viewmodel.name}\"\r\n            android:layout_height=\"wrap_content\"\r\n            android:layout_width=\"wrap_content\"\/&gt;\r\n&lt;\/layout&gt;<\/pre>\n<p>\u041e\u0431\u0440\u0430\u0442\u0438\u0442\u0435 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435, \u0447\u0442\u043e viewmodel.name \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0441\u0442\u0440\u043e\u043a\u043e\u0439 \u0438\u043b\u0438 LiveData. \u0415\u0441\u043b\u0438 \u044d\u0442\u043e LiveData, \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0439 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 \u0431\u0443\u0434\u0435\u0442 \u043e\u0431\u043d\u043e\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u043f\u0440\u0438 \u043a\u0430\u0436\u0434\u043e\u043c \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0438 LiveData.<\/p>\n<p>\u0412\u043e\u043f\u0440\u043e\u0441\u044b \u043e \u043a\u0430\u043a\u043e\u0439-\u043b\u0438\u0431\u043e \u0438\u0437 \u044d\u0442\u0438\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u0439?\u00a0\u041e\u0441\u0442\u0430\u0432\u044c\u0442\u0435 \u043a\u043e\u043c\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439! \u0421\u043f\u0430\u0441\u0438\u0431\u043e \u0437\u0430 \u043f\u0440\u043e\u0447\u0442\u0435\u043d\u0438\u0435!<\/p>\n<p>\u041f\u0440\u043e\u0434\u043e\u043b\u0436\u0435\u043d\u0438\u0435 \u0441\u043b\u0435\u0434\u0443\u0435\u0442<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u042d\u0442\u043e \u043f\u0435\u0440\u0435\u0432\u043e\u0434 \u0442\u0440\u0435\u0442\u044c\u0435\u0439 \u0447\u0430\u0441\u0442\u0438 \u0438\u0437 \u0446\u0438\u043a\u043b\u0430 \u043e\u0431 \u0438\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u0438 ViewModel c Koltin Coroutines, Data Binding \u0438 Navigation. \u0427\u0442\u043e\u0431\u044b \u0431\u043e\u043b\u0435\u0435 \u0442\u0435\u0441\u043d\u043e \u043d\u0430 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435 \u043f\u043e\u0437\u043d\u0430\u043a\u043e\u043c\u0438\u0442\u044c\u0441\u044f \u0441 \u044d\u0442\u0438\u043c\u0438 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430\u043c\u0438, \u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u0439\u0442\u0435\u0441\u044c \u043d\u0430 \u043f\u0440\u043e\u0434\u0432\u0438\u043d\u0443\u0442\u044b\u0439 \u043a\u0443\u0440\u0441 \u043f\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f &#171;\u0427\u0430\u0442-\u043c\u0435\u0441\u0441\u0435\u043d\u0436\u0435\u0440&#187; ViewModel \u0438 LiveData \u0432 Data Binding \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043e \u0432 Android Studio 3.1 \u0414\u043b\u044f Java \u0438 Kotlin \u0412\u0435\u0441\u044c \u044d\u0442\u043e\u0442 \u0448\u0430\u0431\u043b\u043e\u043d LiveData \u042d\u0442\u0430 \u0438\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u044f \u0441\u0442\u0430\u0440\u0430, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11765,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[453],"tags":[3,550,21,483,522,525],"_links":{"self":[{"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/posts\/11739"}],"collection":[{"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/comments?post=11739"}],"version-history":[{"count":7,"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/posts\/11739\/revisions"}],"predecessor-version":[{"id":11823,"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/posts\/11739\/revisions\/11823"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/media\/11765"}],"wp:attachment":[{"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/media?parent=11739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/categories?post=11739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fandroid.info\/wp-json\/wp\/v2\/tags?post=11739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}