API 这部分就更复杂一些,所有以前要发送到 Activity 的信息,现在也要发送到 Fragment,我们处理权限时很常用的 onActivityResult 就是这种情况下的产物;当 Android 加入运行时权限时,Fragment 理所当然的也要支持,因为 Activity 已经支持了。类似的 API 还有 onMultiWindowModeChanged 以及 onPictureInPictureModeChanged。
//com.example.myapplication I/System.out: +++ catch value = 3 //com.example.myapplication I/System.out: +++ onCompletion value = java.lang.IllegalStateException: kotlin.Unit //com.example.myapplication I/System.out: +++ catch exception = java.lang.IllegalStateException: kotlin.Unit 1. 2...
例如,以下这个 Fragment 子类从example_fragment.xml文件加载布局: publicstaticclassExampleFragmentextendsFragment{@OverridepublicViewonCreateView(LayoutInflaterinflater,ViewGroupcontainer,BundlesavedInstanceState){// Inflate the layout for this fragmentreturninflater.inflate(R.layout.example_fragment,container,false);...
步骤二:在Fragment中获取按钮位置 接下来,在Fragment的Java/Kotlin文件中,我们使用onViewCreated方法来获取按钮的位置。 // ExampleFragment.javapublicclassExampleFragmentextendsFragment{@OverridepublicViewonCreateView(LayoutInflaterinflater,ViewGroupcontainer,BundlesavedInstanceState){returninflater.inflate(R.layout.fragmen...
啊,对于我这样的懒人,你也必须添加这个: dependencies { val activity_version = "1.5.1" // Java language implementation implementation("androidx.activity:activity:$activity_version") // Kotlin implementation("androidx.activity:activity-ktx:$activity_version") }...
Fragment:Fragment是Android中的一个轻量级组件,它允许你将UI拆分为多个可重用的部分。Fragment可以嵌入到Activity中,并在不同的Activity之间共享。 Compose:Compose是Android的一个现代UI工具包,它使用Kotlin语言进行声明式UI开发。Compose提供了一种更简洁、更易于维护的UI构建方式。 2. 学习如何在Android项目中集成Compose...
<androidx.fragment.app.FragmentContainerView class="com.example.MyFragment" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" /> FragmentContainerView 也让我们有机会解决一些动画问题。例如 Fragment 在 Z 轴的层级问题。如下图所示,我们可以看到在 Fra...
(FragmentA::class.java)// Pass data using the parent fragment managerscenario.onFragment { fragment ->val data = bundleOf(KEY_DATA to "value")fragment.parentFragmentManager.setFragmentResult("aKey", data)}// Verify data is received, for example, by verifying it's been displayed on the UI...
Kotlin Java MyActivity.kt kotlin classMyActivity:FragmentActivity() {companionobject{// Define a tag String to represent the FlutterFragment within this// Activity's FragmentManager. This value can be whatever you'd like.privateconstvalTAG_FLUTTER_FRAGMENT ="flutter_fragment"}// Declare a local ...
Unlike Eclipse Android Studio does not auto compile your project while saving files. So you may have to build your project to start the annotation processor which will generate the Builder classes for your annotated fragments. Example: import com.hannesdorfmann.fragmentargs.FragmentArgs; import com...