3. FragmentManager: The class for interacting with Fragment objects inside an activity4. FragmentTransaction: The class for performing an atomic set of Fragment operations such as Replace or Add a Fragment.Frag
In this post we want to explain how to use fragment in Android with a real example. In the last post we talked about Fragment in Android and how we can use it to support multiple screen. We described their lifecycle and how we can use it. In this post we want to go deeper and cre...
假设Fragment的布局设置写在example_fragment.xml资源文件中,那么onCreateView()方法可以如下写: public static class ExampleFragment extends Fragment { @Override public ViewonCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment return inf...
--布局文件嵌入: 在布局文件中 使用 <Fragment /> 元素, 通过定义android:name = "com.example.MyFragment"属性指定 Fragment 类; --代码方式嵌入: 调用 FragmentTransaction 对象的 add() 方法向 Activity 中添加 Fragment; 4. Fragment 与 Activity 通信 Fragment 获取 Activity: 调用 Fragment 对象的 getActivit...
android:layout_height="match_parent"> <!-- Activity中的两个子Fragment --> <fragment android:name="com.example.news.ArticleListFragment" android:id="@+id/list" android:layout_weight="1" android:layout_width="0dp" android:layout_height="match_parent" /> ...
2. <LinearLayoutxmlns:androidLinearLayoutxmlns:android="http:///apk/res/android" 3. android:orientation="horizontal" 4. android:layout_width="match_parent" 5. android:layout_height="match_parent"> 6. <fragmentandroid:namefragmentandroid:name="com.example.news.ArticleListFragment" ...
步骤1: 创建一个布局文件example_fragment.xml 步骤2: 在fragment类中加载布局 publicstaticclassExampleFragmentextendsFragment{// container:您的片段布局将插入到的父 ViewGroup@OverridepublicViewonCreateView(LayoutInflater inflater, ViewGroup container,
In the following example, a click listener was set on the activity buttonmyBtn. When the button is clicked, Android will try to find a fragment by theidvalue. Then, check the instance type by using the Kotlinisoperator: myBtn.setOnClickListener{valfragmentInstance=supportFragmentManager.findFr...
<fragment>中的android:name属性指定要在布局中进行实例化的 Fragment 类。 创建此 Activity 布局时,系统会将布局中指定的每个片段实例化,并为每个片段调用onCreateView()方法,以检索每个片段的布局。系统会直接插入片段返回的 View,从而代替<fragment>元素。
android:layout_width="match_parent" android:layout_height="match_parent"> <fragment android:name="com.example.news.ArticleListFragment" android:id="@+id/list" android:layout_weight="1" android:layout_width="0dp" android:layout_height="match_parent"/> ...