iOS/Swift and Android/Java Conversion Chart

I am beta-testing my first Android app, and have recently completed my second iOS app. Having taught myself how to program in both Swift and Java, I spent a lot of time lamenting the inability to easily convert code between the two. Sure, there are cross-platform solutions, but as an independent developer, I couldn’t afford to invest a ton of money in a paid system. Plus, I had already learned Swift, and this wasn’t helpful for many cross-platform solutions.

Below is a list-in-progress of concepts and objects that have parallels between the two operating systems and languages. Feel free to comment and make suggestions!

iOS Android
storyboard/nib design/layout/xml
constraints layouts
UIViewController Activity/Fragment
UIView View
UITableView RecyclerView/LinearLayout
UICollectionView RecyclerView/GridLayout
UIPickerView Spinner
UITextView/UITextField EditText
UILabel TextView
UIButton Button/ImageButton
UIImageView ImageView
UISwitch Switch
viewDidLoad() onCreate()
viewWillAppear() onResume()
viewWillDisappear() onSuspend()
NSNotification.postNotification() sendBroadcast()
NSNotification.addObserver() BroadcastReceiver.onReceive()
dispatch_async() AsyncTask()
 Swift Java
Class Class
String String
Int int/Integer
Bool boolean/Boolean
Array ArrayList/[] — example: String[]
Dictionary HashMap
for i in i..<count { } for (int i=0; i<count; i++) { }
for item in array { } for (String item : array) { }
if x == 5 if (x == 5)
switch object switch (object)
case:
x = 4;
break;
case:
x = 4

I hope this is helpful to some other beginning programmers! Reinventing the wheel for each device is hard enough…not even knowing what the wheel is called is even worse!