Posts by Dmyan • 191 points
2 posts
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		4 votes1 answer361 viewsA: Check if a screen screenshot has been takenOne solution is to use the ContentObserver, because a record will be inserted into the system media database after the screenshot of the screen. Permission is required for this method… 
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		5 votes2 answers395 viewsA: Difference between Alter Table Foreign KeyThe addition of ADD CONSTRAINT is used to define the name of the FOREIGN KEY and to create foreign key with multiple columns. more information…