fun shouldReceiveData() { val scenario = FragmentScenario.launchInContainer(FragmentA::class.java) // Pass data using the parent fragment manager scenario.onFragment { fragment -> val data = bundleOf(KEY_DATA to
Fragment,简称碎片,是Android 3.0(API11)提出的,为了兼容低版本,support-v4库中也开发了一套Fragment API,最低兼容Android 1.6。 Fragment是依赖于Activity的,不能独立存在的。 一个Activity里可以有多个Fragment。 一个Fragment可以被多个Activity重用。 Fragment有自己的生命周期,并能接收输入...猜...
How to use thred to let Server communicate with client We use the rfid reader and mysql database to create a system can let me use my mifare card to pass the door lock system, because we already build an UI, we need to let the server sending message back ......
在实施Fragment与Activity的传值过程中,开发者可能会遇到如下错误: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.app/.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null...
协议中声明的方法: #import <Foundation/Foundation.h> @class UserEntity; @protocol PassValueDelegate <NSObject> -(void)passValue:(UserAndroid Fragment之间传值 首先来介绍的是我们的默认的布局 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent"...
The new ability added to FragmentManager made the FragmentManager be able to act as a central store for Fragment results. Although the function is not named startFragmentForResult, it acts similarly to startActivityForResult. With the snippet below, we can pass the data back and forth between...
parentFragmentManager.setFragmentResult(requestKey, // Same request key FragmentA used to register its listenerbundleOf(key to value) // The data to be passed to FragmentA) 那么Fragment 间通信的新 API 给我们带来哪些好处呢: 在Fragment 之间传递数据,不会持有对方的引用 ...
requestKey,// Same request key FragmentA used to register its listener bundleOf(key tovalue)// The data to be passed to FragmentA ) 测试Fragment Results 测试Fragment 是否成功接收或发送数据,可以使用 FragmentScenario API https://developer.android.com/reference/androidx/fragment/app/testing/Fragment...
The method will callback when start a fragment by FragmentIntent, this use for pass data when pages switch. DoExitAnimation: 可以在这里实现界面退出动画 You can override this method to implement animation when a fragment exit. DoEnterAnimation: 可以在这里实现界面进入动画 You can override this met...
to be inserted, and a third boolean telling whether the fragment’s View as inflated from the layout XML file should be inserted into the parent ViewGroup. In this case we’ll pass false because the View will be attached to the parent ViewGroup elsewhere, by some of the Android code we...