包装规格限制输入小数位数

XFFruit/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.2.8</string>
+	<string>1.2.9</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>

XFFruit/ViewControllers/PurchaseNotice/Views/ShopDetaileViewController.m

@@ -363,6 +363,7 @@ typedef enum : NSUInteger {
             label.left = textField.right+ 5;
             _measureUnitLabel = label;
             textField.placeholder = @"输入包装规格";
+            textField.tag =111;
             [textField addTarget:self action:@selector(textChange:) forControlEvents:UIControlEventAllEditingEvents];
             packageSpecification=textField;//包装规格
             
@@ -455,6 +456,54 @@ typedef enum : NSUInteger {
     }
 }
 
+- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
+    if (textField.tag != 111) {
+        return YES;
+    }
+    
+    NSMutableString * futureString = [NSMutableString stringWithString:textField.text];
+//    kLOG(@"%@", futureString);
+    [futureString  insertString:string atIndex:range.location];
+//    kLOG(@"----%@", futureString);
+    NSInteger flag = 0;
+    NSInteger pointNum = 0;//用于标记小数点的数量，只能有一个小数点
+    const NSInteger limited = 2;//限制小数点后面的位数
+    
+    for (int i = (int)futureString.length - 1; i>=0; i--) {
+        
+        if ([futureString characterAtIndex:i] == '.') {
+            pointNum++;
+//            kLOG(@"----->>>%ld",pointNum);
+            if (pointNum == 2) {
+                
+                return NO;
+                
+            }
+        }
+    }
+    
+    for (int i = (int)futureString.length - 1; i>=0; i--) {
+        
+        if ([futureString characterAtIndex:i] == '.') {
+            
+            if (flag > limited) {
+                
+                return NO;
+                
+            }
+            
+            break;
+            
+        }
+        
+        flag++;
+        
+    }
+    
+    
+    return YES;
+}
+
 #pragma mark - textFiled事件
 - (void)textChange:(UITextField *)textField{
     //包装规格和包装数量