CORE DATA objectId changes constantly

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CORE DATA objectId changes constantly

original source : https://stackoverflow.com/questions/2819242/core-data-objectid-changes-constantly


core data에서 자체 만들어지는 NSManagedObjectID는 수시로 바뀔수 있음으로 이를 특정 데이터를 접근하기 위한 고유 id로 사용해서는 안된다.

The NSManagedObjectID is not guaranteed to be consistent. It can change based on a number of factors including data migration and other factors. If you are using this as a unique identifier for your objects, stop.

The only time you want to use the NSManagedObjectID is when you need to pass references between threads. Other than that situation you should not rely upon it for anything.

If you need a unique id then create one and store it in your entities.

CORE DATA objectId changes constantly

by ⋅ Link

CORE DATA objectId changes constantly

original source : https://stackoverflow.com/questions/2819242/core-data-objectid-changes-constantly


core data에서 자체 만들어지는 NSManagedObjectID는 수시로 바뀔수 있음으로 이를 특정 데이터를 접근하기 위한 고유 id로 사용해서는 안된다.

The NSManagedObjectID is not guaranteed to be consistent. It can change based on a number of factors including data migration and other factors. If you are using this as a unique identifier for your objects, stop.

The only time you want to use the NSManagedObjectID is when you need to pass references between threads. Other than that situation you should not rely upon it for anything.

If you need a unique id then create one and store it in your entities.

by ⋅ Video

Swift: Firebase 3 – How to Send Messages (Ep 8)

my review point is 9/10

https://youtu.be/FDay6ocBlnE?t=3m17s   tap gesture recognizer를 통해 사용자가 tap하면 다른 view controller를 열게 하는 방법  ( addGestureRecognizer )

https://youtu.be/FDay6ocBlnE?t=19m50s   get string from textfield and send it to firebase

https://youtu.be/FDay6ocBlnE?t=23m17s   firebase에 obj만들고 바로 그 obj의 데이터 업데이트하는 과정

https://youtu.be/FDay6ocBlnE?t=25m15s   firebase에 새로운 고유번호를 가지는 child를 생성하는 경우 ( childByAutoID )

https://youtu.be/FDay6ocBlnE?t=27m19s   text field에서 엔터키를 누르는 경우 수행하는 작업 만드는 경우 ( textfield.delegate , UITextFieldDelegate , textFieldShouldReturn )

(Source: https://www.youtube.com/)

by ⋅ Video

Swift: Firebase 3 – How to Send Messages (Ep 8)

my review point is 9/10

https://youtu.be/FDay6ocBlnE?t=3m17s   tap gesture recognizer를 통해 사용자가 tap하면 다른 view controller를 열게 하는 방법  ( addGestureRecognizer )

https://youtu.be/FDay6ocBlnE?t=19m50s   get string from textfield and send it to firebase

https://youtu.be/FDay6ocBlnE?t=23m17s   firebase에 obj만들고 바로 그 obj의 데이터 업데이트하는 과정

https://youtu.be/FDay6ocBlnE?t=25m15s   firebase에 새로운 고유번호를 가지는 child를 생성하는 경우 ( childByAutoID )

https://youtu.be/FDay6ocBlnE?t=27m19s   text field에서 엔터키를 누르는 경우 수행하는 작업 만드는 경우 ( textfield.delegate , UITextFieldDelegate , textFieldShouldReturn )

(Source: https://www.youtube.com/)

how to access the drawable resources by name in android

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how to access the drawable resources by name in android

original source: https://stackoverflow.com/questions/16369814/how-to-access-the-drawable-resources-by-name-in-android

Note that your approach is almost always the wrong way to do things (better to pass the context into the object itself that is using the drawable than keeping a static Context somewhere).

Given that, if you want to do dynamic drawable loading, you can use getIdentifier:

Resources resources = context.getResources();
final int resourceId = resources.getIdentifier(name, "drawable", 
   context.getPackageName());
return resources.getDrawable(resourceId);

how to access the drawable resources by name in android

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how to access the drawable resources by name in android

original source: https://stackoverflow.com/questions/16369814/how-to-access-the-drawable-resources-by-name-in-android

Note that your approach is almost always the wrong way to do things (better to pass the context into the object itself that is using the drawable than keeping a static Context somewhere).

Given that, if you want to do dynamic drawable loading, you can use getIdentifier:

Resources resources = context.getResources();
final int resourceId = resources.getIdentifier(name, "drawable", 
   context.getPackageName());
return resources.getDrawable(resourceId);

How to set Id of dynamic created layout?

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How to set Id of dynamic created layout?

original source : https://stackoverflow.com/questions/8937380/how-to-set-id-of-dynamic-created-layout

You create an ids.xml file and place all your required ids in it as below

<?xml version="1.0" encoding="utf-8"?>
<resources>
        <item type="id" name="layout1" />
        <item type="id" name="layout2" />
        <item type="id" name="layout3" />
</resources>

Now for your dynamically created layouts or views you can use these ids as below

new_layout1.setId(R.id.layout1);
new_view2.setId(R.id.layout2);
new_layout3.setId(R.id.layout3);

I hope it may help you.