iphone – Zbar SDK和ios7 / xcode 5 – 应用程序达到100％cpu使用和内存超过100MB

readerqr = [ZBarReaderViewController new];
    readerqr.readerDelegate = self;
    readerqr.showsHelpOnFail = NO;

ZBarImageScAnner *scAnner = readerqr.scAnner;
[scAnner setSymbology: 0
               config: ZBAR_CFG_ENABLE
                   to: 0];
[scAnner setSymbology: ZBAR_QRCODE
               config: ZBAR_CFG_ENABLE
                   to: 1];

// you can use this to support the simulator
if(target_ipHONE_SIMULATOR) {
    cameraSim = [[ZBarCameraSimulator alloc]
                 initWithViewController: self];
    cameraSim.readerView = readerView;
}

-(void) showqr:(id)sender
{
    [self presentViewController:readerqr animated:YES completion:nil];
    return;
}