Judge UIPanGestureRecognizer direction

leichunfeng · leichunfeng · commit 0d51de93d26a · 2015-12-30T20:06:09.000+08:00
diff --git a/MVVMReactiveCocoa/View/BaseClass/MRCViewController.m b/MVVMReactiveCocoa/View/BaseClass/MRCViewController.m
@@ -12,7 +12,7 @@
 #import "MRCDoubleTitleView.h"
 #import "MRCLoadingTitleView.h"
 
-@interface MRCViewController ()
+@interface MRCViewController () <UIGestureRecognizerDelegate>
 
 @property (nonatomic, strong, readwrite) MRCViewModel *viewModel;
 @property (nonatomic, strong, readwrite) UIPercentDrivenInteractiveTransition *interactivePopTransition;
@@ -52,6 +52,7 @@ - (void)viewDidLoad {
     if (self.navigationController != nil && self != self.navigationController.viewControllers.firstObject) {
         UIPanGestureRecognizer *popRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePopRecognizer:)];
         [self.view addGestureRecognizer:popRecognizer];
+        popRecognizer.delegate = self;
     }
 }
 
@@ -165,4 +166,10 @@ - (void)handlePopRecognizer:(UIPanGestureRecognizer *)recognizer {
     }
 }
 
+#pragma mark - UIGestureRecognizerDelegate
+
+- (BOOL)gestureRecognizerShouldBegin:(UIPanGestureRecognizer *)recognizer {
+    return [recognizer velocityInView:self.view].x > 0;
+}
+
 @end

Original file line number	Diff line number	Diff line change
`@@ -12,7 +12,7 @@`
`12`	`12`	`#import "MRCDoubleTitleView.h"`
`13`	`13`	`#import "MRCLoadingTitleView.h"`
`14`	`14`
`15`		`-@interface MRCViewController ()`
	`15`	`+@interface MRCViewController () <UIGestureRecognizerDelegate>`
`16`	`16`
`17`	`17`	`@property (nonatomic, strong, readwrite) MRCViewModel *viewModel;`
`18`	`18`	`@property (nonatomic, strong, readwrite) UIPercentDrivenInteractiveTransition *interactivePopTransition;`
`@@ -52,6 +52,7 @@ - (void)viewDidLoad {`
`52`	`52`	`if (self.navigationController != nil && self != self.navigationController.viewControllers.firstObject) {`
`53`	`53`	`UIPanGestureRecognizer *popRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePopRecognizer:)];`
`54`	`54`	`[self.view addGestureRecognizer:popRecognizer];`
	`55`	`+ popRecognizer.delegate = self;`
`55`	`56`	`}`
`56`	`57`	`}`
`57`	`58`
`@@ -165,4 +166,10 @@ - (void)handlePopRecognizer:(UIPanGestureRecognizer *)recognizer {`
`165`	`166`	`}`
`166`	`167`	`}`
`167`	`168`
	`169`	`+#pragma mark - UIGestureRecognizerDelegate`
	`170`	`+`
	`171`	`+- (BOOL)gestureRecognizerShouldBegin:(UIPanGestureRecognizer *)recognizer {`
	`172`	`+ return [recognizer velocityInView:self.view].x > 0;`
	`173`	`+}`
	`174`	`+`
`168`	`175`	`@end`