lifecycle

What is the Life Cycle of an iPhone application? [closed]

由 ￣綄美尐妖づ 提交于 2019-11-26 23:15:10
Can anyone explain what is the life cycle process of iPhone? i.e from the start to end of the application life cycle. See also This post on Cocoanetics that present a very useful flowchart explaining the different calls to the AppDelegate methods during the app life cycle: here is diagram image for understand Life Cycle (iPhone / Android) Edit: Here is the more detailed information from Apple Docs . Part 1: Part 2: Reference Also this one is for View Controller Life Cycle methods There's another simpler one in ios developer's cookbook If you want to something more detail ,you can read the

Activity side-by-side lifecycle

由 别说谁变了你拦得住时间么 提交于 2019-11-26 21:34:58
问题 Imagine that I have an Activity A and I'm starting a new activity B from that one. What will be the Activities lifecycle side-by-side? 1. A: onCreate 2. A: onStart 3. A: onResume on A => startActivity(B) 4. B: onCreate 5. B: onStart 6. A: onPause 7. B: onResume 8. A: onStop Is this correct? 回答1: Almost correct, just a minor difference. first A.onPause() and then B.onCreate()... etc A: onCreate A: onStart A: onResume on A => startActivity(B) A: onPause B: onCreate B: onStart B: onResume A:

Android: Create service that runs when application stops

由 家住魔仙堡 提交于 2019-11-26 20:46:47
问题 How do you create a Service that keeps on running when your application is stopped? I am creating the service in a separate process in the manifest file: <service android:name="com.example.myservice" android:process=":remoteservice" /> I am also returning START_STICKY in the Service's onStartCommand: @Override public in onStartCommand(Intent intent, int flags, int startId){ return Service.START_STICKY; } 回答1: I wouldn't use the android:process attribute - this actually runs your service in a

JSF skip Required-Validation without immediate=true

由 断了今生、忘了曾经 提交于 2019-11-26 19:06:07
问题 I have multiple forms, where I have mandatory fields and optional fields. To submit such a form I require the validation on the required-attribute to be executed, which works fine. To cancel such a form I use the attribute immediate="true" on the p:commandbutton , which makes its action happen during the Apply Request Values -Phase as addressed here: How to skip validation when a specific button is clicked? However, for large forms I want to provide the user with a Save-Button, so he can

How can i remove a singleton spring bean from ApplicationContext?

由 一个人想着一个人 提交于 2019-11-26 18:58:06
I want to develop a module control system so that every spring bean can be managed by my own LifeCycle Controller. But I can not figure out how can I remove a singleton spring bean out of ApplicationContext. That may be an interesting problem , can you help me to resolve ? You can try removing the bean definition. Get the BeanDefinitionRegistry and call removeDefinition(..) It depends on the way you create your application, but for example in web application you can get the definition registry by: BeanDefinitionRegistry factory = (BeanDefinitionRegistry) applicationCtx

Fragment lifecycle - which method is called upon show / hide?

由 泄露秘密 提交于 2019-11-26 18:55:10
问题 I am using the following method to switch between Fragments (in my NavigationDrawer) by showing / hiding them. protected void showFragment(int container, Fragment fragment, String tag, String lastTag, boolean addToBackStack ) { FragmentManager fragmentManager = getSupportFragmentManager(); FragmentTransaction transaction = fragmentManager.beginTransaction(); if ( lastTag != null && !lastTag.equals("")) { Fragment lastFragment = fragmentManager.findFragmentByTag( lastTag ); if ( lastFragment !

Application_End global.asax

由 ε祈祈猫儿з 提交于 2019-11-26 17:49:22
问题 Can anybody tell me when Application_End is triggered in a lifecycle of an application? When all sessions are ended, will Application_End be triggered automatically? + Are there any other reasons why Application_End could be triggered? 回答1: The application_end event primarily fires when the IIS pool is recycled or the application itself is unloaded. One other thing to note, that a change to a dependent file (say web.config) will cause the application to reload itself, which will in cause the

Windows 8 Winrt Application goes to background or close

由 谁说胖子不能爱 提交于 2019-11-26 17:17:06
问题 How can you tell when a windows 8 Metro app gets put in the background? The suspended state doesn't activate. I have a break point on. It only hits if I close the app. I am using a webcam and since no apps can run in the background I need to save my work when it's put in the background. The windows phone it was application deactivated. any help would be nice. 回答1: Apps do not normally get suspended when in the debugger. However, you can force a suspend when debugging by: Enabling the Debug

How to distinguish between orientation change and leaving application android

由 有些话、适合烂在心里 提交于 2019-11-26 15:57:49
问题 I understand that when the orientation of the screen changes, the current activities onDestroy() is called followed by the onCreate() to effectively recreate the activity. I need to know how to programmatically tell if the application is being exited or if just the orientation is being changed. One method is for the previous activity to notify me when its onResume() method is being called, this will let me know that the user has pressed the back button and the orientation hasn't been changed.

How to check if an activity is the last one in the activity stack for an application?

由 江枫思渺然 提交于 2019-11-26 15:51:20
I want to know if user would return to the home screen if he exit the current activity. UPDATE (Jul 2015): Since getRunningTasks() get deprecated, from API 21 it's better to follow raukodraug answer or Ed Burnette one (I would prefer second one). There's possibility to check current tasks and their stack using ActivityManager . So, to determine if an activity is the last one: request android.permission.GET_TASKS permissions in the manifest. Use the following code: ActivityManager mngr = (ActivityManager) getSystemService( ACTIVITY_SERVICE ); List<ActivityManager.RunningTaskInfo> taskList =
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