修改返回按钮问题

Ifish/controllers/BaseVIewContorller/FatherController.m

@@ -21,12 +21,7 @@
     
 }
 -(void)setNav{
-    UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
-    btn.frame = CGRectMake(2, 5,47, 44);
-    [btn setBackgroundImage:[UIImage imageNamed:@"back_btn"] forState:UIControlStateNormal];
-    [btn addTarget: self action: @selector(goBackAction) forControlEvents: UIControlEventTouchUpInside];
-    
-    UIBarButtonItem*back=[[UIBarButtonItem alloc]initWithCustomView:btn];
+    UIBarButtonItem*back=[[UIBarButtonItem alloc] initWithImage:[[UIImage imageNamed:@"back_btn"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] style:UIBarButtonItemStyleDone target:self action:@selector(goBackAction)];
     self.navigationItem.leftBarButtonItem=back;
 }
 - (void)addTitleViewWithTitle:(NSString *)title{

Ifish/controllers/BaseVIewContorller/WhiteNavBaseViewController.m

@@ -43,18 +43,8 @@
 }
 
 -(void)initNav{
-    // 1. 可以改变全栈back按钮 图片 60*60 @2x像素
-    
-    _bakbutton = [UIButton buttonWithType:UIButtonTypeCustom];
-    _bakbutton.frame = CGRectMake(0,0,48,44);
-    [_bakbutton setImage:[UIImage imageNamed:@"arrow_b"] forState:UIControlStateNormal];
-    
-    
-    [_bakbutton addTarget: self action: @selector(goBackAction) forControlEvents: UIControlEventTouchUpInside];
-    
-    _back=[[UIBarButtonItem alloc] initWithCustomView:_bakbutton];
+    _back =[[UIBarButtonItem alloc] initWithImage:[[UIImage imageNamed:@"back_btn_1"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] style:UIBarButtonItemStyleDone target:self action:@selector(goBackAction)];
     self.navigationItem.leftBarButtonItem=_back;
-    
 }
 
 -(void)goBackAction{

Ifish/controllers/FishTinkController/maincontroller/CenterViewController.m

@@ -127,7 +127,7 @@
     
     // 左侧按钮背景
    
-    UIImage *hamburger = [UIImage imageNamed:@"back_btn"];
+    UIImage *hamburger = [[UIImage imageNamed:@"back_btn"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
     self.openDrawerButton = [UIButton buttonWithType:UIButtonTypeCustom];
     self.openDrawerButton.frame = CGRectMake(0, 0, 47,44);
     [self.openDrawerButton setImage:hamburger forState:UIControlStateNormal];

Ifish/controllers/erweima/ScanViewController.m

@@ -58,7 +58,7 @@
     [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"blackbar.png"] forBarMetrics:UIBarMetricsDefault];
     _bakbutton = [UIButton buttonWithType:UIButtonTypeCustom];
     _bakbutton.frame = CGRectMake(0, 0, 47,44);
-    [_bakbutton setBackgroundImage:[UIImage imageNamed:@"back_btn"] forState:UIControlStateNormal];
+    [_bakbutton setImage:[UIImage imageNamed:@"back_btn"] forState:UIControlStateNormal];
     [_bakbutton addTarget: self action: @selector(backButtonEvent) forControlEvents: UIControlEventTouchUpInside];