##语法
| Java | Swift |
|---|---|
| import packagename.Xyz; | import framework |
| class Xyz extends SomeClass | class Xyz : SomeClass |
| interface Abc | protocol Abc |
| class Xyz extends SomeClass implements Abc | class Xyz: SomeClass,Abc |
| int mProperty; | varmProperty: Int |
| Xyz() // constructor | init() |
| Xyz obj = new Xyz(); | var obj : Xyz = Xyz() |
| void doWork(String arg) | funcdoWork (arg: String)->Void |
| obj.doWork(arg); | obj.doWork(arg) |
| Access Modifier: private vs. public | private vs. public |
##通用语法
| 通用 | Java | Swift |
|---|---|---|
| Self | this.aMember | self.aMember |
| Variables | String aName | var aName: String |
| Boolean | boolean | Bool |
| Integer | Integer or int | Int, UInt |
| Null value | null | nil |
| Array | ArrayList or JSONArray if string serialization is required | Array or NSArray |
| Hash table | HashMap or JSONObject if string serialization is required | Dictionary or NSDictionary |
##结构
| Android | IOS |
|---|---|
| Layout files | Content view |
| Fragment class | UIViewController |
| Java event listener | Delegate |
| Activity class that coordinates the child Fragments in it | Container view controller |
| Android Layout file | storyboard |
| RelativeLayout | Auto Layout |
| rootView.findViewById(...), setOnXxxListener(...) | IBOutlet, IBAction |
| FragmentTransaction | UINavigationController |
##生命周期
| Android(Fragment) | IOS |
|---|---|
| onCreate() & onCreateView() | viewDidLoad() |
| onStart() | viewWillAppear() |
| onResume() | viewDidAppear() |
| onPause() | viewWillDisappear() |
| onStop() | viewDidDisappear() |
##UI
| Android | IOS |
|---|---|
| View, ViewGroup | UIView |
| TextView | UILabel |
| EditText(Single Line) | UITextField |
| EditText(Multiple Line) | UITextView |
| Button | UIButton |
| RadioGroup | UISegmentedControl |
| SeekBar | UISlider |
| ProgressBar (default style) | UIActivityIndicatorView |
| ProgressBar (horizontal style) | UIProgressView |
| Switch, Checkbox, ToggleButton | UISwitch |
| ImageView | UIImageView |
| Options Menu, ActionBar Items | UIBarButtonItem |
| Context Menu, PopupMenu | UIActionSheet |
| Spinner | UIPickerView |
| WebView | UIWebView |
| ScrollView | UIScrollView |
| ListView | UITableView |
| ListView Item | UITableViewCell |
| Adapter | UITableViewDataSource |
| ListFragment.onListItemClick(...) | UITableViewDelegate |
| GridView | UICollectionView |
| VideoView | MPMoviePlayerViewController |
##UI controller
| Android | IOS |
|---|---|
| Toasts | - |
| ListFragment | UITableViewController |
| ViewPager | UIPageViewController |
| AlertDialog | UIAlertController |
| DialogFragment | UIPopoverController |
| Actionbar Navigation Tabs | UITabBarController |
##数据
| Android | IOS |
|---|---|
| App Resources | Assets Catalog, Externalize Strings |
| SharedPreferences | NSUserDefaults |
| File | NSFileManager |
##网络
| Android | IOS |
|---|---|
| HttpURLConnection | NSURLConnection |