Getactivity in activity

Author: srje

August undefined, 2024

WebIt's null because you are assigning it before it even instantiated. public class DashboardFragment extends Fragment { private DashboardViewModel dashboardViewModel; private static final int REQUEST_CODE_LOCATION_PERMISSION = 1; private TextView txtLocation; private ResultReceiver resultReceiver; // private … WebTry This On Fragment Create Adapter And Model Class And RecyclerView in .xml Class.

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WebLets split it up: getActivity() can be used in a Fragment for getting the parent Activity of the Fragment (basically the Activity that displayed the Fragment). ((MainActivity) getActivity()) additionally casts the result of getActivity() to MainActivity. Usually, you just know that getActivity() returns an object of type Activity, but using this cast, you tell the compiler … WebApr 12, 2024 · This has nothing to do with device being rooted or not, it's a race-condition. getActivity "might" return null, even if called from within onActivityCreated ...especially … block someone on snapchat 2019

Get Current Activity in Espresso android - Stack Overflow

WebApr 12, 2024 · 1 Answer Sorted by: 5 getActivity "might" return null if called from within onActivityCreated ...especially during a configuration change like orientation change because the activity gets destroyed...move that initialization to onAttach ... @Override public void onAttach (Activity activity) { super.onAttach (activity); //initialize here } WebAndroid StrictMode java.lang.Throwable：未調用顯式終止方法“關閉” [英]Android StrictMode java.lang.Throwable: Explicit termination method 'close' not called WebI to had a similar doubt what I got to know was getActivity() returns the Activity to which the fragment is associated. The getActivity() method is used generally in static fragment … free chemistry books download pdf

java - getActivity() in adapter - Stack Overflow

getActivity() from non activity class Kotlin - Stack Overflow

WebFeb 5, 2013 · If you are unsure about your class name check the top of your file under the import declarations. If you want to call your activity, just use this . You use the … WebOct 2, 2012 · A FragmentActivity is an instance of Activity (in Java style: FragmentActivity extends Activity ). So there is no point calling getActivity because a FragmentActivity is already an Acivity, so just calling/using this will work. Also there is no method called getActivity in the FragmentActivity class. free chemistry databasesWebThis happened when you call getActivity () in another thread that finished after the fragment has been removed. The typical case is calling getActivity () (ex. for a Toast) when an HTTP request finished (in onResponse for example). To avoid this, you can define a field name mActivity and use it instead of getActivity (). free chemistry drawing software mac

"WebThere is a good chance (if you're using appcompat) that the context you've got is wrapped, casting something like a ContextThemeWrapper to Activity will throw a … " - Getactivity in activity

Getactivity in activity

android - getActivity() where it is defined? - Stack Overflow

WebJul 24, 2012 · Also, it is a good practice when using fragments to check isAdded before getActivity () is called. This helps avoid a null pointer exception when the fragment is detached from the activity. For example, an activity could contain a fragment that pushes an async task. When the task is finished, the onTaskComplete listener is called. WebApr 12, 2024 · My app work fine on most devices, except in some where even in the fragment's onActivityCreated, the getActivity method keeps returning null. I need …

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WebSep 8, 2024 · Getting activity from a fragment in Kotlin is optional (might be null) so the type must be Activity? then you have to safecall it like activity?.finish() and it won't crash … WebSep 30, 2012 · Each fragment belongs to a parent activity. So just use: getActivity().whatever From within the fragment. It is a better answer because you avoid superflous casts. If you cannot avoid the casts with this solution use the one below. ===== what you have to do is to cast to the outer activity ((MainActivity) getActivity()).Method();

WebAug 28, 2024 · From a Fragment: Context is parent activity (getActivity()) . When to use getactivity ( ) where it is defined? The getActivity() method gives the context of the … WebNov 23, 2016 · Context does not have a getActivity method, only Fragment does. So, if you want to use it in this way, you need to change your field from Context c; into Fragment c;, and then call c.getActivity ().getSupportFragmentManager () in onItemClick. Or alternatively, change your field to Activity c;, and then call …

WebAdd a helper method to get the current activity. private Activity getCurrentActivity () { return currentActivity [0]; } So, once you've launched your first activity, just call monitorCurrentActivity () and then whenever you need a reference to the current activity you just call getCurrentActivity () Share. WebIf you are calling Activity.this from an inner class, you have to put inner before the class class MyActivity : MainActivity () { // Call from class itself val builder = MaterialDialog.Builder (this@MyActivity) inner class Inner { this@MyActivity // Call from the inner class } } Share Improve this answer Follow answered Mar 21, 2024 at 15:18

WebMay 28, 2015 · The easiest way is an Activity variable // in your fragment Activity myActivity; @Override public void onAttach(Activity activity) { super.onAttach(activity); …

WebJul 8, 2015 · The activity containing the fragment is passed in as a parameter. The simplest solution is may be to save the activity as a member of your fragment. Then it is available when needed later. @Override public void onAttach (Activity activity) { super.onAttach (activity); //save the activity to a member of this fragment mHostActivity = activity; } block song on spotifyWebJun 22, 2024 · I would like to go from Fragment to an Activity by clicking on an item of Fragment's RecyclerView.RecyclerView adapter is made in separate class, so in that … blocksom schoolWebApr 11, 2024 · 在Fragment基类里设置一个Activity mActivity的全局变量，在onAttach(Activity activity)里赋值，使用mActivity代替getActivity()，保证Fragment即使在onDetach后，仍持有Activity的引用（有引起内存泄露的风险，但是异步任务没停止的情况下，本身就可能已内存泄漏，相比Crash，这种 ... blocks on ekg paperWebJul 22, 2016 · My problem is when an item is clicked from Recyclerview, I want to direct the user to TicketDetails activity. I have the code to get the clicked item and its position in the view holder, but when I try to create a new intent to new activity like this inside view holder. startActivity(new Intent(getActivity(), TicketDetails.class)); blocksons tree serviceWebJun 14, 2024 · The method getActivity () is normally used in fragments to get the context of the activity in which they are inserted or inflated. getApplicationContext () Returns the … free chemistry classes online for adultsWebApr 11, 2024 · 答：这里没用到，在重写DrawerListener的onDrawerSlide方法时，我们可以通过他的第一个参数drawerView，调用drawerView.getTag ().equals ("START")判断触发菜单事件的是哪个菜单！. 然后可以进行对应的操作！. 到此，相信大家对“DrawerLayout的简单使用及侧滑菜单实现方法是什么 ... free chemistry help online chatWebOct 2, 2012 · A FragmentActivity is an instance of Activity (in Java style: FragmentActivity extends Activity). So there is no point calling getActivity because a FragmentActivity is … free chemistry drawing tool