IP属地：北京
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输入的金额保留两位小数
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange...
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获取当前的controller
+ (UIViewController *)currentViewController { UIViewController *result =...
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UIPickView 设置分割线颜色 文字颜色
- (UIView*)pickerView:(UIPickerView*)pickerView viewForRow:(NSInteger)ro...
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