可以用来作为 GC 回收 Object 的标志。 与Android 中的差异:在 2.3 以后版本中,即使内存够用,Android 系统会优先将 SoftReference 的对象提前回收掉, 其他和 Java 中是一样的。 因此谷歌官方建议用LruCache(least recentlly use 最少最近使用算法)。会将内存控制在一定的大小内, 超出最大值时会自动回收, 这个最...
atandroid.app.Fragment.performCreateView(Fragment.java:2220) atandroid.app.FragmentManagerImpl.moveToState(FragmentManager.java:973) atandroid.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148) atandroid.app.FragmentManagerImpl.popBackStackState(FragmentManager.java:1587) atandroid.app.FragmentM...
I'm loading in the page adapter the fragments to show, but they are all the same with a few differences. Layout for page 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:lay...
1 作为Android培训的学员,更好的掌握Android开发中的Fragments尤为重要,现在达内的相关专业老师就来为你详细的列举出来。为了管理Activity中的fragments,需要使用FragmentManager.为了得到它,需要调用Activity中的getFragmentManager()方法。因为FragmentManager的API是在Android 3.0,也即API level 11开始引入的,所以对于之前...
at android.app.Fragment.performCreateView(Fragment.java:2220) at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:973) at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148) at android.app.FragmentManagerImpl.popBackStackState(FragmentManager.java:1587) ...
NewFragment.java new_fragment_layout.xml 主Activity: LearnFragment.java activity_learn_fragment.xml 资源: strings.xml 程序运行截图: 参考资料: API Guides:Fragments http://developer.android.com/guide/components/fragments.html FragmentManager类文档: ...
MainActivity.java(commentedsetupActionBarWithNavControllerbecause ToolBar is not here anymore) packagecom.testui2;importandroid.os.Bundle;importandroid.view.Menu;importcom.google.android.material.navigation.NavigationView;importandroidx.navigation.NavController;importandroidx.navigation.Navigation...
android.view.InflateException: Binary XML file line # XX: Binary XML file line #XX: Error inflating class fragment 崩溃的位置就在parent fragment(FragmentE) inflate的时候. 打印具体的异常栈信息可以看到: at com.example.ddmeng.helloactivityandfragment.fragment.FragmentE.onCreateView(FragmentE.java:35)at...
:orientation="vertical" android:clickable="true" android:focusable="true" > and its because even if u give the layout background color you still have the other xml layout in background so if you have button in back and you click on the foreground layout it will active the button in back...
android.R.layout.simple_list_item_activated_1, Shakespeare.TITLES)); // Check to see if we have a frame in which to embed the details // fragment directly in the containing UI. View detailsFrame = getActivity().findViewById(R.id.details); ...