Android 嵌套片段找不到id的视图
我正在开发一个简单的应用程序,它具有带有选项卡布局的嵌套片段。父活动是LandingActivity。在LandingActivity的内部,我称之为LandingFragment。在着陆碎片内部,我有以下功能Android 嵌套片段找不到id的视图,android,android-fragments,tabs,android-nested-fragment,Android,Android Fragments,Tabs,Android Nested Fragment,我正在开发一个简单的应用程序,它具有带有选项卡布局的嵌套片段。父活动是LandingActivity。在LandingActivity的内部,我称之为LandingFragment。在着陆碎片内部,我有以下功能 Tasks TAB Fragments flow is TasksMainFragment->TasksFragment->DetailFragment. Pending TAB Fragments flow is PendingMainFragment->Pendi
Tasks TAB Fragments flow is TasksMainFragment->TasksFragment->DetailFragment.
Pending TAB Fragments flow is PendingMainFragment->PendingFragment->PendingDetailFragment
下面的代码表示从TasksMainFragment调用TasksFragment
TasksFragment fragment=new TasksFragment();
FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.id_frame, fragment, "tasks");
fragmentTransaction.addToBackStack("tasks");
fragmentTransaction.commit();
下面的代码表示从TasksFragment调用DetailFragment。基本上TasksFragment包含带有一些任务的recyclerview。当用户点击任务时,它将打开任务的DetailFragment
Fragment fragment = new DetailFragment();
FragmentManager manager = ((FragmentActivity) mContext).getSupportFragmentManager();
FragmentTransaction fragmentTransaction = manager.beginTransaction();
Bundle bundle = new Bundle();
ItemModel item = list.get(position);
bundle.putSerializable("item", item);
bundle.putBoolean("having", havingStartedService());
fragment.setArguments(bundle);
fragmentTransaction.replace(R.id.id_frame, fragment, "details");
fragmentTransaction.addToBackStack("details");
fragmentTransaction.commit();
当用户切换到挂起选项卡时,相同的行为或相同的功能将起作用。但问题是,当我在一段时间后打开应用程序或每天早上第一次打开应用程序时,我就面临着这个问题
当我改变屏幕方向时,我也面临这个问题
为了更好地理解,我在下面发布日志
12-20 16:33:01.658 21590-21590/com.naushad.kenostaff E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.naushad.kenostaff, PID: 21590
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.naushad.kenostaff/com.naushad.kenostaff.landing.LandingActivity}: java.lang.IllegalArgumentException: No view found for id 0x7f070059 (com.naushad.kenostaff:id/id_frame) for fragment TasksFragment{b980f0d #7 id=0x7f070059 tasks}
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2684)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2751)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4556)
at android.app.ActivityThread.-wrap19(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1502)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6186)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f070059 (com.naushad.kenostaff:id/id_frame) for fragment TasksFragment{b980f0d #7 id=0x7f070059 tasks}
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1293)
at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1528)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1595)
at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:758)
at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2363)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2149)
at android.support.v4.app.FragmentManagerImpl.optimizeAndExecuteOps(FragmentManager.java:2103)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2013)
at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:388)
at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:607)
at android.support.v7.app.AppCompatActivity.onStart(AppCompatActivity.java:181)
at com.stfalcon.androidmvvmhelper.mvvm.activities.BindingActivity.onStart(BindingActivity.java:50)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1249)
at android.app.Activity.performStart(Activity.java:6701)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2647)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2751)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4556)
at android.app.ActivityThread.-wrap19(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1502)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6186)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)
请在这个问题上给我一些帮助。在过去的一周里,我一直在面对这个问题,我尝试了很多方法,但都没有任何帮助。提前感谢。通过使用getChildFragmentManager()而不是getActivity.getSupportFragmentManager()。我解决了这两个崩溃问题 对于打开TasksFragment,我使用以下代码
FragmentManager FragmentManager=getChildFragmentManager()代码>
对于打开DetailFragment,我使用下面的代码
FragmentManager FragmentManager=getActivity().getSupportFragmentManager()代码>
在“任务”选项卡中。在pending选项卡中,我也采用相同的方法来解决崩溃问题
现在我面临着另一个问题。我正在检查用户在TasksMainFragment和PendingMainFragment中可以看到的片段。因为我在两个主要片段中打开了两个片段。所以取决于我想要更新可见片段的UI
通过使用下面的代码,我正在检查哪个片段对用户可见
Fragment f1 = getActivity().getSupportFragmentManager().findFragmentById(R.id.id_frame);
if (f1 instanceof TasksFragment) {
Log.d("", "GCM Receiverf1task:Tasks");
// ((TasksFragment) f1).updateUI(message, order);
}
else if (f1 instanceof DetailFragment) {
Log.d("", "GCM Receiverf1task:Tasks Details");
// if(message.contains("Started") || message.contains("Completed") || message.contains("cancelled"))
// ((DetailFragment) f1).updateUI(message, order);
}
但是当我在TasksFragment中时,上面的代码不起作用。当我详细介绍时,上面的代码运行良好。请帮助我解决此问题,或者让我知道我的方式是否有任何错误。“找不到id视图”您是否将单个活动用作父项?是的,我将单个活动用作父项我使用上述答案解决了问题,但面临其他问题getParentFragment().getChildFragmentManager();在空对象引用上。