Picasso Vs Glide

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S.O.L.I.D. Class Design Principles

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Open-Closed Principle

'A class should be open for extension closed for modification.' The above principle explains that a class once defined should not be changed(closed for modification). This is because it may impact other parts of application. Hence, if modification is needed, that class behaviour should be extended and modification should be done. (open for extension) Consider a scenario where area of a shape(like rectangle, square, circle) is calculated within Main class. Now addition of any new shape will lead to change in Main class. This concludes that the Shape is tightly coupled with Main class. In order to avoid this Shape should be inherited by diff Shape classes like Rect, Triangle, Circle implementing the behaviour of calculating area() and Main class should be loosely coupled by using Shape.area() (as Triangle, Rectangle are Shape). Hence, Shape interface is contract between its concrete classes and Main class. This allows us to add new shape class without any impact on exi...
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Access Youtube Video via Android app

Youtube video are provided with a distinct key like -         https://www.youtube.com/watch?v=7fC016i3Zpg        https://www.youtube.com/watch?v=LbuUvVe_Gqc&t=37s 1. You need to download Youtube supporting library from here     and add paste it to the lib folder of app followed by adding it to gradle file as shown below. compile files( 'libs/YouTubeAndroidPlayerApi.jar' ) 2. Sync your project 3. Once you have the key, add the below code in your activity-       if (YouTubeIntents. canResolvePlayVideoIntentWithOptions( this )) {          //Opens in the YouTube app in fullscreen and returns to this app once the video finishes                      startActivity(             YouTubeIntents. createPlayVideoIntentWithOptions ( context , video.getKey(), true , true )     ...
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