├── LPStretchableHeaderView.xcodeproj
    ├── project.pbxproj
    └── xcuserdata
    │   └── ylp.xcuserdatad
    │       └── xcschemes
    │           └── LPStretchableHeaderView.xcscheme
├── LPStretchableHeaderView
    ├── AppDelegate.swift
    ├── Assets.xcassets
    │   ├── 123.imageset
    │   │   ├── 123.jpg
    │   │   └── Contents.json
    │   ├── AppIcon.appiconset
    │   │   └── Contents.json
    │   └── Contents.json
    ├── Base.lproj
    │   ├── LaunchScreen.storyboard
    │   └── Main.storyboard
    ├── Extension.swift
    ├── Info.plist
    ├── LPStretchableHeaderView.swift
    └── ViewController.swift
├── LPStretchableHeaderViewTests
    ├── Info.plist
    └── LPStretchableHeaderViewTests.swift
├── LPStretchableHeaderViewUITests
    ├── Info.plist
    └── LPStretchableHeaderViewUITests.swift
├── README.md
└── stretchableView.gif


/LPStretchableHeaderView.xcodeproj/project.pbxproj:
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380 | 		456EFC231F4D11B800AF6D5D /* Release */ = {
381 | 			isa = XCBuildConfiguration;
382 | 			buildSettings = {
383 | 				ALWAYS_SEARCH_USER_PATHS = NO;
384 | 				CLANG_ANALYZER_NONNULL = YES;
385 | 				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
386 | 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
387 | 				CLANG_CXX_LIBRARY = "libc++";
388 | 				CLANG_ENABLE_MODULES = YES;
389 | 				CLANG_ENABLE_OBJC_ARC = YES;
390 | 				CLANG_WARN_BOOL_CONVERSION = YES;
391 | 				CLANG_WARN_CONSTANT_CONVERSION = YES;
392 | 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
393 | 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
394 | 				CLANG_WARN_EMPTY_BODY = YES;
395 | 				CLANG_WARN_ENUM_CONVERSION = YES;
396 | 				CLANG_WARN_INFINITE_RECURSION = YES;
397 | 				CLANG_WARN_INT_CONVERSION = YES;
398 | 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
399 | 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
400 | 				CLANG_WARN_UNREACHABLE_CODE = YES;
401 | 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
402 | 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
403 | 				COPY_PHASE_STRIP = NO;
404 | 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
405 | 				ENABLE_NS_ASSERTIONS = NO;
406 | 				ENABLE_STRICT_OBJC_MSGSEND = YES;
407 | 				GCC_C_LANGUAGE_STANDARD = gnu99;
408 | 				GCC_NO_COMMON_BLOCKS = YES;
409 | 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
410 | 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
411 | 				GCC_WARN_UNDECLARED_SELECTOR = YES;
412 | 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
413 | 				GCC_WARN_UNUSED_FUNCTION = YES;
414 | 				GCC_WARN_UNUSED_VARIABLE = YES;
415 | 				IPHONEOS_DEPLOYMENT_TARGET = 10.3;
416 | 				MTL_ENABLE_DEBUG_INFO = NO;
417 | 				SDKROOT = iphoneos;
418 | 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
419 | 				VALIDATE_PRODUCT = YES;
420 | 			};
421 | 			name = Release;
422 | 		};
423 | 		456EFC251F4D11B800AF6D5D /* Debug */ = {
424 | 			isa = XCBuildConfiguration;
425 | 			buildSettings = {
426 | 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
427 | 				CLANG_ENABLE_MODULES = YES;
428 | 				DEVELOPMENT_TEAM = RWKH7R4DZR;
429 | 				INFOPLIST_FILE = LPStretchableHeaderView/Info.plist;
430 | 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
431 | 				PRODUCT_BUNDLE_IDENTIFIER = com.Tony.ylp.LPStretchableHeaderView;
432 | 				PRODUCT_NAME = "$(TARGET_NAME)";
433 | 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
434 | 				SWIFT_VERSION = 3.0;
435 | 			};
436 | 			name = Debug;
437 | 		};
438 | 		456EFC261F4D11B800AF6D5D /* Release */ = {
439 | 			isa = XCBuildConfiguration;
440 | 			buildSettings = {
441 | 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
442 | 				CLANG_ENABLE_MODULES = YES;
443 | 				DEVELOPMENT_TEAM = RWKH7R4DZR;
444 | 				INFOPLIST_FILE = LPStretchableHeaderView/Info.plist;
445 | 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
446 | 				PRODUCT_BUNDLE_IDENTIFIER = com.Tony.ylp.LPStretchableHeaderView;
447 | 				PRODUCT_NAME = "$(TARGET_NAME)";
448 | 				SWIFT_VERSION = 3.0;
449 | 			};
450 | 			name = Release;
451 | 		};
452 | 		456EFC281F4D11B800AF6D5D /* Debug */ = {
453 | 			isa = XCBuildConfiguration;
454 | 			buildSettings = {
455 | 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
456 | 				BUNDLE_LOADER = "$(TEST_HOST)";
457 | 				DEVELOPMENT_TEAM = RWKH7R4DZR;
458 | 				INFOPLIST_FILE = LPStretchableHeaderViewTests/Info.plist;
459 | 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
460 | 				PRODUCT_BUNDLE_IDENTIFIER = com.Tony.ylp.LPStretchableHeaderViewTests;
461 | 				PRODUCT_NAME = "$(TARGET_NAME)";
462 | 				SWIFT_VERSION = 3.0;
463 | 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/LPStretchableHeaderView.app/LPStretchableHeaderView";
464 | 			};
465 | 			name = Debug;
466 | 		};
467 | 		456EFC291F4D11B800AF6D5D /* Release */ = {
468 | 			isa = XCBuildConfiguration;
469 | 			buildSettings = {
470 | 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
471 | 				BUNDLE_LOADER = "$(TEST_HOST)";
472 | 				DEVELOPMENT_TEAM = RWKH7R4DZR;
473 | 				INFOPLIST_FILE = LPStretchableHeaderViewTests/Info.plist;
474 | 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
475 | 				PRODUCT_BUNDLE_IDENTIFIER = com.Tony.ylp.LPStretchableHeaderViewTests;
476 | 				PRODUCT_NAME = "$(TARGET_NAME)";
477 | 				SWIFT_VERSION = 3.0;
478 | 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/LPStretchableHeaderView.app/LPStretchableHeaderView";
479 | 			};
480 | 			name = Release;
481 | 		};
482 | 		456EFC2B1F4D11B800AF6D5D /* Debug */ = {
483 | 			isa = XCBuildConfiguration;
484 | 			buildSettings = {
485 | 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
486 | 				DEVELOPMENT_TEAM = RWKH7R4DZR;
487 | 				INFOPLIST_FILE = LPStretchableHeaderViewUITests/Info.plist;
488 | 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
489 | 				PRODUCT_BUNDLE_IDENTIFIER = com.Tony.ylp.LPStretchableHeaderViewUITests;
490 | 				PRODUCT_NAME = "$(TARGET_NAME)";
491 | 				SWIFT_VERSION = 3.0;
492 | 				TEST_TARGET_NAME = LPStretchableHeaderView;
493 | 			};
494 | 			name = Debug;
495 | 		};
496 | 		456EFC2C1F4D11B800AF6D5D /* Release */ = {
497 | 			isa = XCBuildConfiguration;
498 | 			buildSettings = {
499 | 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
500 | 				DEVELOPMENT_TEAM = RWKH7R4DZR;
501 | 				INFOPLIST_FILE = LPStretchableHeaderViewUITests/Info.plist;
502 | 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
503 | 				PRODUCT_BUNDLE_IDENTIFIER = com.Tony.ylp.LPStretchableHeaderViewUITests;
504 | 				PRODUCT_NAME = "$(TARGET_NAME)";
505 | 				SWIFT_VERSION = 3.0;
506 | 				TEST_TARGET_NAME = LPStretchableHeaderView;
507 | 			};
508 | 			name = Release;
509 | 		};
510 | /* End XCBuildConfiguration section */
511 | 
512 | /* Begin XCConfigurationList section */
513 | 		456EFBF71F4D11B800AF6D5D /* Build configuration list for PBXProject "LPStretchableHeaderView" */ = {
514 | 			isa = XCConfigurationList;
515 | 			buildConfigurations = (
516 | 				456EFC221F4D11B800AF6D5D /* Debug */,
517 | 				456EFC231F4D11B800AF6D5D /* Release */,
518 | 			);
519 | 			defaultConfigurationIsVisible = 0;
520 | 			defaultConfigurationName = Release;
521 | 		};
522 | 		456EFC241F4D11B800AF6D5D /* Build configuration list for PBXNativeTarget "LPStretchableHeaderView" */ = {
523 | 			isa = XCConfigurationList;
524 | 			buildConfigurations = (
525 | 				456EFC251F4D11B800AF6D5D /* Debug */,
526 | 				456EFC261F4D11B800AF6D5D /* Release */,
527 | 			);
528 | 			defaultConfigurationIsVisible = 0;
529 | 			defaultConfigurationName = Release;
530 | 		};
531 | 		456EFC271F4D11B800AF6D5D /* Build configuration list for PBXNativeTarget "LPStretchableHeaderViewTests" */ = {
532 | 			isa = XCConfigurationList;
533 | 			buildConfigurations = (
534 | 				456EFC281F4D11B800AF6D5D /* Debug */,
535 | 				456EFC291F4D11B800AF6D5D /* Release */,
536 | 			);
537 | 			defaultConfigurationIsVisible = 0;
538 | 			defaultConfigurationName = Release;
539 | 		};
540 | 		456EFC2A1F4D11B800AF6D5D /* Build configuration list for PBXNativeTarget "LPStretchableHeaderViewUITests" */ = {
541 | 			isa = XCConfigurationList;
542 | 			buildConfigurations = (
543 | 				456EFC2B1F4D11B800AF6D5D /* Debug */,
544 | 				456EFC2C1F4D11B800AF6D5D /* Release */,
545 | 			);
546 | 			defaultConfigurationIsVisible = 0;
547 | 			defaultConfigurationName = Release;
548 | 		};
549 | /* End XCConfigurationList section */
550 | 	};
551 | 	rootObject = 456EFBF41F4D11B800AF6D5D /* Project object */;
552 | }
553 | 


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/LPStretchableHeaderView.xcodeproj/xcuserdata/ylp.xcuserdatad/xcschemes/LPStretchableHeaderView.xcscheme:
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  1 | <?xml version="1.0" encoding="UTF-8"?>
  2 | <Scheme
  3 |    LastUpgradeVersion = "0830"
  4 |    version = "1.3">
  5 |    <BuildAction
  6 |       parallelizeBuildables = "YES"
  7 |       buildImplicitDependencies = "YES">
  8 |       <BuildActionEntries>
  9 |          <BuildActionEntry
 10 |             buildForTesting = "YES"
 11 |             buildForRunning = "YES"
 12 |             buildForProfiling = "YES"
 13 |             buildForArchiving = "YES"
 14 |             buildForAnalyzing = "YES">
 15 |             <BuildableReference
 16 |                BuildableIdentifier = "primary"
 17 |                BlueprintIdentifier = "456EFBFB1F4D11B800AF6D5D"
 18 |                BuildableName = "LPStretchableHeaderView.app"
 19 |                BlueprintName = "LPStretchableHeaderView"
 20 |                ReferencedContainer = "container:LPStretchableHeaderView.xcodeproj">
 21 |             </BuildableReference>
 22 |          </BuildActionEntry>
 23 |       </BuildActionEntries>
 24 |    </BuildAction>
 25 |    <TestAction
 26 |       buildConfiguration = "Debug"
 27 |       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
 28 |       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
 29 |       shouldUseLaunchSchemeArgsEnv = "YES">
 30 |       <Testables>
 31 |          <TestableReference
 32 |             skipped = "NO">
 33 |             <BuildableReference
 34 |                BuildableIdentifier = "primary"
 35 |                BlueprintIdentifier = "456EFC0F1F4D11B800AF6D5D"
 36 |                BuildableName = "LPStretchableHeaderViewTests.xctest"
 37 |                BlueprintName = "LPStretchableHeaderViewTests"
 38 |                ReferencedContainer = "container:LPStretchableHeaderView.xcodeproj">
 39 |             </BuildableReference>
 40 |          </TestableReference>
 41 |          <TestableReference
 42 |             skipped = "NO">
 43 |             <BuildableReference
 44 |                BuildableIdentifier = "primary"
 45 |                BlueprintIdentifier = "456EFC1A1F4D11B800AF6D5D"
 46 |                BuildableName = "LPStretchableHeaderViewUITests.xctest"
 47 |                BlueprintName = "LPStretchableHeaderViewUITests"
 48 |                ReferencedContainer = "container:LPStretchableHeaderView.xcodeproj">
 49 |             </BuildableReference>
 50 |          </TestableReference>
 51 |       </Testables>
 52 |       <MacroExpansion>
 53 |          <BuildableReference
 54 |             BuildableIdentifier = "primary"
 55 |             BlueprintIdentifier = "456EFBFB1F4D11B800AF6D5D"
 56 |             BuildableName = "LPStretchableHeaderView.app"
 57 |             BlueprintName = "LPStretchableHeaderView"
 58 |             ReferencedContainer = "container:LPStretchableHeaderView.xcodeproj">
 59 |          </BuildableReference>
 60 |       </MacroExpansion>
 61 |       <AdditionalOptions>
 62 |       </AdditionalOptions>
 63 |    </TestAction>
 64 |    <LaunchAction
 65 |       buildConfiguration = "Debug"
 66 |       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
 67 |       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
 68 |       launchStyle = "0"
 69 |       useCustomWorkingDirectory = "NO"
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 71 |       debugDocumentVersioning = "YES"
 72 |       debugServiceExtension = "internal"
 73 |       allowLocationSimulation = "YES">
 74 |       <BuildableProductRunnable
 75 |          runnableDebuggingMode = "0">
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 77 |             BuildableIdentifier = "primary"
 78 |             BlueprintIdentifier = "456EFBFB1F4D11B800AF6D5D"
 79 |             BuildableName = "LPStretchableHeaderView.app"
 80 |             BlueprintName = "LPStretchableHeaderView"
 81 |             ReferencedContainer = "container:LPStretchableHeaderView.xcodeproj">
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 83 |       </BuildableProductRunnable>
 84 |       <AdditionalOptions>
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 94 |          runnableDebuggingMode = "0">
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 96 |             BuildableIdentifier = "primary"
 97 |             BlueprintIdentifier = "456EFBFB1F4D11B800AF6D5D"
 98 |             BuildableName = "LPStretchableHeaderView.app"
 99 |             BlueprintName = "LPStretchableHeaderView"
100 |             ReferencedContainer = "container:LPStretchableHeaderView.xcodeproj">
101 |          </BuildableReference>
102 |       </BuildableProductRunnable>
103 |    </ProfileAction>
104 |    <AnalyzeAction
105 |       buildConfiguration = "Debug">
106 |    </AnalyzeAction>
107 |    <ArchiveAction
108 |       buildConfiguration = "Release"
109 |       revealArchiveInOrganizer = "YES">
110 |    </ArchiveAction>
111 | </Scheme>
112 | 


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/LPStretchableHeaderView/AppDelegate.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.swift
 3 | //  LPStretchableHeaderView
 4 | //
 5 | //  Created by Tony on 2017/8/23.
 6 | //  Copyright © 2017年 Tony. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | @UIApplicationMain
12 | class AppDelegate: UIResponder, UIApplicationDelegate {
13 | 
14 |     var window: UIWindow?
15 | 
16 | 
17 |     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
18 |         
19 |         return true
20 |     }
21 |     
22 |     func applicationWillResignActive(_ application: UIApplication) {
23 |         // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
24 |         // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
25 |     }
26 | 
27 |     func applicationDidEnterBackground(_ application: UIApplication) {
28 |         // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
29 |         // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
30 |     }
31 | 
32 |     func applicationWillEnterForeground(_ application: UIApplication) {
33 |         // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
34 |     }
35 | 
36 |     func applicationDidBecomeActive(_ application: UIApplication) {
37 |         // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
38 |     }
39 | 
40 |     func applicationWillTerminate(_ application: UIApplication) {
41 |         // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
42 |     }
43 | 
44 | 
45 | }
46 | 
47 | 


--------------------------------------------------------------------------------
/LPStretchableHeaderView/Assets.xcassets/123.imageset/123.jpg:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/splsylp/LPStretchableHeaderView/df45390929c2c09253a554025226b43dc13076f1/LPStretchableHeaderView/Assets.xcassets/123.imageset/123.jpg


--------------------------------------------------------------------------------
/LPStretchableHeaderView/Assets.xcassets/123.imageset/Contents.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "images" : [
 3 |     {
 4 |       "idiom" : "universal",
 5 |       "filename" : "123.jpg",
 6 |       "scale" : "1x"
 7 |     },
 8 |     {
 9 |       "idiom" : "universal",
10 |       "scale" : "2x"
11 |     },
12 |     {
13 |       "idiom" : "universal",
14 |       "scale" : "3x"
15 |     }
16 |   ],
17 |   "info" : {
18 |     "version" : 1,
19 |     "author" : "xcode"
20 |   }
21 | }


--------------------------------------------------------------------------------
/LPStretchableHeaderView/Assets.xcassets/AppIcon.appiconset/Contents.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "images" : [
 3 |     {
 4 |       "idiom" : "iphone",
 5 |       "size" : "20x20",
 6 |       "scale" : "2x"
 7 |     },
 8 |     {
 9 |       "idiom" : "iphone",
10 |       "size" : "20x20",
11 |       "scale" : "3x"
12 |     },
13 |     {
14 |       "idiom" : "iphone",
15 |       "size" : "29x29",
16 |       "scale" : "2x"
17 |     },
18 |     {
19 |       "idiom" : "iphone",
20 |       "size" : "29x29",
21 |       "scale" : "3x"
22 |     },
23 |     {
24 |       "idiom" : "iphone",
25 |       "size" : "40x40",
26 |       "scale" : "2x"
27 |     },
28 |     {
29 |       "idiom" : "iphone",
30 |       "size" : "40x40",
31 |       "scale" : "3x"
32 |     },
33 |     {
34 |       "idiom" : "iphone",
35 |       "size" : "60x60",
36 |       "scale" : "2x"
37 |     },
38 |     {
39 |       "idiom" : "iphone",
40 |       "size" : "60x60",
41 |       "scale" : "3x"
42 |     }
43 |   ],
44 |   "info" : {
45 |     "version" : 1,
46 |     "author" : "xcode"
47 |   }
48 | }


--------------------------------------------------------------------------------
/LPStretchableHeaderView/Assets.xcassets/Contents.json:
--------------------------------------------------------------------------------
1 | {
2 |   "info" : {
3 |     "version" : 1,
4 |     "author" : "xcode"
5 |   }
6 | }


--------------------------------------------------------------------------------
/LPStretchableHeaderView/Base.lproj/LaunchScreen.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11134" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11106"/>
 5 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
 6 |     </dependencies>
 7 |     <scenes>
 8 |         <!--View Controller-->
 9 |         <scene sceneID="EHf-IW-A2E">
10 |             <objects>
11 |                 <viewController id="01J-lp-oVM" sceneMemberID="viewController">
12 |                     <layoutGuides>
13 |                         <viewControllerLayoutGuide type="top" id="Llm-lL-Icb"/>
14 |                         <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
15 |                     </layoutGuides>
16 |                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
17 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
18 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
19 |                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
20 |                     </view>
21 |                 </viewController>
22 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
23 |             </objects>
24 |             <point key="canvasLocation" x="53" y="375"/>
25 |         </scene>
26 |     </scenes>
27 | </document>
28 | 


--------------------------------------------------------------------------------
/LPStretchableHeaderView/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
 3 |     <device id="retina4_7" orientation="portrait">
 4 |         <adaptation id="fullscreen"/>
 5 |     </device>
 6 |     <dependencies>
 7 |         <deployment identifier="iOS"/>
 8 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
 9 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
10 |     </dependencies>
11 |     <scenes>
12 |         <!--View Controller-->
13 |         <scene sceneID="tne-QT-ifu">
14 |             <objects>
15 |                 <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="LPStretchableHeaderView" customModuleProvider="target" sceneMemberID="viewController">
16 |                     <layoutGuides>
17 |                         <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
18 |                         <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
19 |                     </layoutGuides>
20 |                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
21 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
22 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
23 |                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
24 |                     </view>
25 |                 </viewController>
26 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
27 |             </objects>
28 |             <point key="canvasLocation" x="136.80000000000001" y="135.38230884557723"/>
29 |         </scene>
30 |     </scenes>
31 | </document>
32 | 


--------------------------------------------------------------------------------
/LPStretchableHeaderView/Extension.swift:
--------------------------------------------------------------------------------
  1 | //
  2 | //  Extension.swift
  3 | //  LPStretchableHeaderView
  4 | //
  5 | //  Created by Tony on 2017/8/24.
  6 | //  Copyright © 2017年 Tony. All rights reserved.
  7 | //
  8 | 
  9 | import UIKit
 10 | 
 11 | // 屏幕宽度
 12 | let SCREEN_HEIGHT = UIScreen.main.bounds.size.height
 13 | // 屏幕高度
 14 | let SCREEN_WIDTH = UIScreen.main.bounds.size.width
 15 | 
 16 | 
 17 | extension UIView {
 18 |     
 19 |     public var x: CGFloat {
 20 |         get {
 21 |             return self.frame.origin.x
 22 |         }
 23 |         set {
 24 |             var frame = self.frame
 25 |             frame.origin.x = newValue
 26 |             self.frame = frame
 27 |         }
 28 |     }
 29 |     
 30 |     public var y: CGFloat{
 31 |         get {
 32 |             return self.frame.origin.y
 33 |         }
 34 |         set {
 35 |             var frame = self.frame
 36 |             frame.origin.y = newValue
 37 |             self.frame = frame
 38 |         }
 39 |     }
 40 |     
 41 |     /** 宽 */
 42 |     public var width: CGFloat{
 43 |         get {
 44 |             return self.frame.size.width
 45 |         }
 46 |         set {
 47 |             var frame = self.frame
 48 |             frame.size.width = newValue
 49 |             self.frame = frame
 50 |         }
 51 |     }
 52 |     
 53 |     /** 高 */
 54 |     public var height: CGFloat{
 55 |         get {
 56 |             return self.frame.size.height
 57 |         }
 58 |         set {
 59 |             var frame = self.frame
 60 |             frame.size.height = newValue
 61 |             self.frame = frame
 62 |         }
 63 |     }
 64 |     
 65 |     /** 下 */
 66 |     public var bottom: CGFloat{
 67 |         get {
 68 |             return self.frame.origin.y + self.frame.size.height
 69 |         }
 70 |         
 71 |         set {
 72 |             var frame = self.frame
 73 |             frame.origin.y = newValue - self.frame.size.height
 74 |             self.frame = frame
 75 |         }
 76 |     }
 77 |     
 78 |     /** 右 */
 79 |     public var right: CGFloat{
 80 |         get {
 81 |             return self.frame.origin.x + self.frame.size.width
 82 |         }
 83 |         
 84 |         set {
 85 |             var frame = self.frame
 86 |             frame.origin.x = newValue - self.frame.size.width
 87 |             self.frame = frame
 88 |         }
 89 |     }
 90 |     
 91 |     /** 尺寸 */
 92 |     public var size: CGSize{
 93 |         get {
 94 |             return self.frame.size
 95 |         }
 96 |         
 97 |         set {
 98 |             var frame = self.frame
 99 |             frame.size = newValue
100 |             self.frame = frame
101 |         }
102 |     }
103 |     
104 |     /** 竖直中心对齐 */
105 |     public var centerX: CGFloat{
106 |         get {
107 |             return self.center.x
108 |         }
109 |         
110 |         set {
111 |             var center = self.center
112 |             center.x = newValue
113 |             self.center = center
114 |         }
115 |     }
116 |     
117 |     /** 水平中心对齐 */
118 |     public var centerY: CGFloat{
119 |         get {
120 |             return self.center.y
121 |         }
122 |         
123 |         set {
124 |             var center = self.center
125 |             center.y = newValue
126 |             self.center = center
127 |         }
128 |     }
129 | }
130 | 
131 | 
132 | extension UIColor {
133 |     
134 |     class var Main: UIColor {
135 |         return UIColor(red: 74 / 255.0, green: 163 / 255.0, blue: 243 / 255.0, alpha: 1.0)
136 |     }
137 |     
138 |     class var Gray: UIColor {
139 |         return UIColor(red: 242 / 255.0, green: 243 / 255.0, blue: 248 / 255.0, alpha: 1.0)
140 |     }
141 |     
142 |     class func RGB_COLOR(_ r:CGFloat, g:CGFloat, b:CGFloat, alpha:CGFloat) -> UIColor {
143 |         return UIColor(red: r / 255.0, green: g / 255.0, blue: b / 255.0, alpha: alpha)
144 |     }
145 | }
146 | 


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/LPStretchableHeaderView/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>APPL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleVersion</key>
20 | 	<string>1</string>
21 | 	<key>LSRequiresIPhoneOS</key>
22 | 	<true/>
23 | 	<key>UILaunchStoryboardName</key>
24 | 	<string>LaunchScreen</string>
25 | 	<key>UIMainStoryboardFile</key>
26 | 	<string>Main</string>
27 | 	<key>UIRequiredDeviceCapabilities</key>
28 | 	<array>
29 | 		<string>armv7</string>
30 | 	</array>
31 | 	<key>UISupportedInterfaceOrientations</key>
32 | 	<array>
33 | 		<string>UIInterfaceOrientationPortrait</string>
34 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
35 | 		<string>UIInterfaceOrientationLandscapeRight</string>
36 | 	</array>
37 | </dict>
38 | </plist>
39 | 


--------------------------------------------------------------------------------
/LPStretchableHeaderView/LPStretchableHeaderView.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  LPStretchableHeaderView.swift
 3 | //  LPStretchableHeaderView
 4 | //
 5 | //  Created by Tony on 2017/8/23.
 6 | //  Copyright © 2017年 Tony. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | public class LPStretchableHeaderView: NSObject {
12 | 
13 |     private var stretchView = UIView()
14 |     private var imageRatio: CGFloat
15 |     private var originFrame = CGRect()
16 |     
17 |     public init(stretchableView: UIView) {
18 |         
19 |         stretchView = stretchableView
20 |         originFrame = stretchableView.frame
21 |         imageRatio = stretchableView.bounds.height / stretchableView.bounds.width
22 |     }
23 |     
24 |     public func scrollViewDidScroll(_ scrollView: UIScrollView) {
25 |         
26 |         let yOffset = scrollView.contentOffset.y
27 |         if yOffset > 0 { // 往上移动
28 |             var frame = originFrame
29 |             frame.origin.y = originFrame.origin.y - yOffset
30 |             stretchView.frame = frame
31 |         } else { // 往下移动
32 |             var frame = originFrame
33 |             frame.size.height = originFrame.size.height - yOffset
34 |             frame.size.width = frame.size.height / imageRatio
35 |             frame.origin.x = originFrame.origin.x - (frame.size.width - originFrame.size.width) * 0.5
36 |             stretchView.frame = frame
37 |         }
38 |     }
39 | }
40 | 


--------------------------------------------------------------------------------
/LPStretchableHeaderView/ViewController.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.swift
 3 | //  LPStretchableHeaderView
 4 | //
 5 | //  Created by Tony on 2017/8/23.
 6 | //  Copyright © 2017年 Tony. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
12 |     
13 |     var bgImageView: UIImageView!
14 |     var navView: UIView!
15 |     var stretchableView: LPStretchableHeaderView!
16 |     
17 |     var headerHeight: CGFloat = 0
18 |     
19 |     
20 |     override func viewDidLoad() {
21 |         super.viewDidLoad()
22 |         
23 |         bgImageView = UIImageView(frame: CGRect(x: 0, y: 0, width: SCREEN_WIDTH, height: SCREEN_WIDTH * 0.75))
24 |         bgImageView.image = UIImage(named: "123")
25 |         view.addSubview(bgImageView)
26 |         
27 |         let tableView = UITableView(frame: CGRect(x: 0, y: 0, width: SCREEN_WIDTH, height: SCREEN_HEIGHT))
28 |         tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
29 |         tableView.dataSource = self
30 |         tableView.delegate = self
31 |         tableView.showsVerticalScrollIndicator = false
32 |         tableView.backgroundColor = UIColor.clear
33 |         view.addSubview(tableView)
34 |         
35 |         let headerView = UIView(frame: bgImageView.bounds)
36 |         headerView.height -= 80 // 对背景图片进行一部分的遮盖（可选，，可以不遮盖。。。）
37 |         headerHeight = headerView.height
38 |         tableView.tableHeaderView = headerView
39 |         
40 |         let nameLabel = UILabel(frame: CGRect(x: 0, y: 150, width: bgImageView.width, height: 40))
41 |         nameLabel.text = "哈哈哈😆"
42 |         nameLabel.textAlignment = .center
43 |         nameLabel.textColor = UIColor.white
44 |         headerView.addSubview(nameLabel)
45 |         
46 |         makeNavView()
47 |         
48 |         stretchableView = LPStretchableHeaderView(stretchableView: bgImageView)
49 |     }
50 |     
51 |     // 导航栏
52 |     func makeNavView() {
53 |         
54 |         navView = UIView(frame: CGRect(x: 0, y: 0, width: SCREEN_WIDTH, height: 64))
55 |         view.addSubview(navView)
56 |         
57 |         let titleLabel = UILabel(frame: navView.bounds)
58 |         titleLabel.text = "导航栏标题"
59 |         titleLabel.textColor = UIColor.white
60 |         titleLabel.textAlignment = .center
61 |         navView.addSubview(titleLabel)
62 |     }
63 |     
64 |     func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
65 |         return 20
66 |     }
67 |     
68 |     func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
69 |         
70 |         let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
71 |         cell.textLabel?.text = "000"
72 |         return cell
73 |     }
74 |     
75 |     func scrollViewDidScroll(_ scrollView: UIScrollView) {
76 |         
77 |         // 导航栏设置
78 |         let yOffset = scrollView.contentOffset.y
79 |         if yOffset < (headerHeight - navView.height) {
80 |             let alpha = yOffset / (headerHeight - navView.height)
81 |             navView.backgroundColor = UIColor.RGB_COLOR(74, g: 163, b: 243, alpha: alpha)
82 |         } else {
83 |             navView.backgroundColor = UIColor.RGB_COLOR(74, g: 163, b: 243, alpha: 1)
84 |         }
85 |         
86 |         stretchableView.scrollViewDidScroll(scrollView)
87 |     }
88 |     
89 | }
90 | 
91 | 


--------------------------------------------------------------------------------
/LPStretchableHeaderViewTests/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>BNDL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleVersion</key>
20 | 	<string>1</string>
21 | </dict>
22 | </plist>
23 | 


--------------------------------------------------------------------------------
/LPStretchableHeaderViewTests/LPStretchableHeaderViewTests.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  LPStretchableHeaderViewTests.swift
 3 | //  LPStretchableHeaderViewTests
 4 | //
 5 | //  Created by Tony on 2017/8/23.
 6 | //  Copyright © 2017年 Tony. All rights reserved.
 7 | //
 8 | 
 9 | import XCTest
10 | @testable import LPStretchableHeaderView
11 | 
12 | class LPStretchableHeaderViewTests: XCTestCase {
13 |     
14 |     override func setUp() {
15 |         super.setUp()
16 |         // Put setup code here. This method is called before the invocation of each test method in the class.
17 |     }
18 |     
19 |     override func tearDown() {
20 |         // Put teardown code here. This method is called after the invocation of each test method in the class.
21 |         super.tearDown()
22 |     }
23 |     
24 |     func testExample() {
25 |         // This is an example of a functional test case.
26 |         // Use XCTAssert and related functions to verify your tests produce the correct results.
27 |     }
28 |     
29 |     func testPerformanceExample() {
30 |         // This is an example of a performance test case.
31 |         self.measure {
32 |             // Put the code you want to measure the time of here.
33 |         }
34 |     }
35 |     
36 | }
37 | 


--------------------------------------------------------------------------------
/LPStretchableHeaderViewUITests/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>BNDL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleVersion</key>
20 | 	<string>1</string>
21 | </dict>
22 | </plist>
23 | 


--------------------------------------------------------------------------------
/LPStretchableHeaderViewUITests/LPStretchableHeaderViewUITests.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  LPStretchableHeaderViewUITests.swift
 3 | //  LPStretchableHeaderViewUITests
 4 | //
 5 | //  Created by Tony on 2017/8/23.
 6 | //  Copyright © 2017年 Tony. All rights reserved.
 7 | //
 8 | 
 9 | import XCTest
10 | 
11 | class LPStretchableHeaderViewUITests: XCTestCase {
12 |         
13 |     override func setUp() {
14 |         super.setUp()
15 |         
16 |         // Put setup code here. This method is called before the invocation of each test method in the class.
17 |         
18 |         // In UI tests it is usually best to stop immediately when a failure occurs.
19 |         continueAfterFailure = false
20 |         // UI tests must launch the application that they test. Doing this in setup will make sure it happens for each test method.
21 |         XCUIApplication().launch()
22 | 
23 |         // In UI tests it’s important to set the initial state - such as interface orientation - required for your tests before they run. The setUp method is a good place to do this.
24 |     }
25 |     
26 |     override func tearDown() {
27 |         // Put teardown code here. This method is called after the invocation of each test method in the class.
28 |         super.tearDown()
29 |     }
30 |     
31 |     func testExample() {
32 |         // Use recording to get started writing UI tests.
33 |         // Use XCTAssert and related functions to verify your tests produce the correct results.
34 |     }
35 |     
36 | }
37 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # LPStretchableHeaderView
 2 | #### 两行代码实现tableView头部视图拉伸放大效果
 3 | 
 4 | ![image](https://github.com/splsylp/LPStretchableHeaderView/blob/master/stretchableView.gif )
 5 | 
 6 | #### [实现原理解析](http://www.jianshu.com/p/1b3788dfa4ea)
 7 | 
 8 | 
 9 | ##### 使用
10 | ###### 1.初始化调用
11 | ```Swift
12 | stretchableView = LPStretchableHeaderView(stretchableView: bgImageView)
13 | ```
14 | ###### 2.代理方法实现：
15 | ```Swift
16 | func scrollViewDidScroll(_ scrollView: UIScrollView) {
17 |     stretchableView.scrollViewDidScroll(scrollView)
18 | }
19 | ```
20 | ---
21 | ### 您的star，是对我最大的鼓励与支持~
22 | 


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/stretchableView.gif:
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https://raw.githubusercontent.com/splsylp/LPStretchableHeaderView/df45390929c2c09253a554025226b43dc13076f1/stretchableView.gif


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