如何在键盘中添加相机按钮以用作IOS中的条形码扫描仪？

Question

如何在键盘中添加相机按钮以用作IOS中的条形码扫描仪？

Answer 1

您可以使用工具栏作为UITextfield与UIBarButtonSystemItemCamera

的附件视图

 toolbar = [[UIToolbar alloc] init];
    toolbar.barStyle = UIBarStyleBlackOpaque;
    [toolbar sizeToFit];
    toolbar.frame = CGRectMake(0, 436, 320, 44);
    UIBarButtonItem *spaceItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
    spaceItem.width = 130.0;
    UIBarButtonItem *cameraItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(captureBarItemPressed:)];
    NSArray *items = [NSArray arrayWithObjects: spaceItem, cameraItem, nil];
    [toolbar setItems:items];

txtField.inputAccessoryView  =  toolbar