iOS-二维码扫描界面（转）

网址学习：http://blog.csdn.net/linux_zkf/article/details/7724867     二维码扫描界面自定义

作者：朱克锋

邮箱：zhukefeng@iboxpay.com

转载请注明出处：http://blog.csdn.net/linux_zkf

这个简单的实例实在ZBarReaderViewController的view层上再加一层用于定义自己的界面

- (void)QRscan

{

ZBarReaderViewController *reader = [ZBarReaderViewController new];

reader.readerDelegate = self;

//非全屏

reader.wantsFullScreenLayout = NO;

//隐藏底部控制按钮

reader.showsZBarControls = NO;

//设置自己定义的界面

[self setOverlayPickerView:reader];

ZBarImageScanner *scanner = reader.scanner;

[scanner setSymbology: ZBAR_I25

config: ZBAR_CFG_ENABLE

to: 0];

[self presentModalViewController: reader

animated: YES];

[reader release];

}

- (void)setOverlayPickerView:(ZBarReaderViewController *)reader

{

//清除原有控件

for (UIView *temp in [reader.view subviews]) {

for (UIButton *button in [temp subviews]) {

if ([button isKindOfClass:[UIButton class]]) {

[button removeFromSuperview];

}

}

for (UIToolbar *toolbar in [temp subviews]) {

if ([toolbar isKindOfClass:[UIToolbar class]]) {

[toolbar setHidden:YES];

[toolbar removeFromSuperview];

}

}

}

//画中间的基准线

UIView* line = [[UIView alloc] initWithFrame:CGRectMake(40, 220, 240, 1)];

line.backgroundColor = [UIColor redColor];

[reader.view addSubview:line];

[line release];

//最上部view

UIView* upView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 80)];

upView.alpha = 0.3;

upView.backgroundColor = [UIColor blackColor];

[reader.view addSubview:upView];

//用于说明的label

UILabel * labIntroudction= [[UILabel alloc] init];

labIntroudction.backgroundColor = [UIColor clearColor];

labIntroudction.frame=CGRectMake(15, 20, 290, 50);

labIntroudction.numberOfLines=2;

labIntroudction.textColor=[UIColor whiteColor];

labIntroudction.text=@"将二维码图像置于矩形方框内，离手机摄像头10CM左右，系统会自动识别。";

[upView addSubview:labIntroudction];

[labIntroudction release];

[upView release];

//左侧的view

UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 80, 20, 280)];

leftView.alpha = 0.3;

leftView.backgroundColor = [UIColor blackColor];

[reader.view addSubview:leftView];

[leftView release];

//右侧的view

UIView *rightView = [[UIView alloc] initWithFrame:CGRectMake(300, 80, 20, 280)];

rightView.alpha = 0.3;

rightView.backgroundColor = [UIColor blackColor];

[reader.view addSubview:rightView];

[rightView release];

//底部view

UIView * downView = [[UIView alloc] initWithFrame:CGRectMake(0, 360, 320, 120)];

downView.alpha = 0.3;

downView.backgroundColor = [UIColor blackColor];

[reader.view addSubview:downView];

[downView release];

//用于取消操作的button

UIButton *cancelButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];

cancelButton.alpha = 0.4;

[cancelButton setFrame:CGRectMake(20, 390, 280, 40)];

[cancelButton setTitle:@"取消" forState:UIControlStateNormal];

[cancelButton.titleLabel setFont:[UIFont boldSystemFontOfSize:20]];

[cancelButton addTarget:self action:@selector(dismissOverlayView:)forControlEvents:UIControlEventTouchUpInside];

[reader.view addSubview:cancelButton];

}

//取消button方法

- (void)dismissOverlayView:(id)sender{

[self dismissModalViewControllerAnimated: YES];

}