FlutterPlugins/flutter_barcode_reader
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Code Issues Releases Wiki Activity

Fix for Issue #61

Browse Source 
While the iOS device is rotating the bounds of the previewView will be recalculated
and the scanRect will be reinitialized

Changes in the WorkspaceSettings are necessary to run the example app
This commit is contained in:
Julian Finkler 2019-12-16 20:59:07 +01:00
parent 39ecc57bc0
commit 06f38e0b53
2 changed files with 39 additions and 15 deletions
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10
example/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings Normal file
View File

@ -0,0 +1,10 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>BuildSystemType</key>
<string>Original</string>
<key>PreviewsEnabled</key>
<false/>
</dict>
</plist>

44
ios/Classes/BarcodeScannerViewController.m
View File

@ -10,6 +10,34 @@
@implementation BarcodeScannerViewController { @implementation BarcodeScannerViewController {
} }
- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
{
CGRect bounds = [UIScreen mainScreen].bounds;
CGRect reversedBounds = CGRectMake(bounds.origin.x, bounds.origin.y, bounds.size.height, bounds.size.width);
self.previewView.bounds = reversedBounds;
self.previewView.frame = reversedBounds;
[self.scanRect removeFromSuperview];
[self setupScanRect:reversedBounds];
[super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];
}
- (void)setupScanRect:(CGRect)bounds {
self.scanRect = [[ScannerOverlay alloc] initWithFrame:bounds];
self.scanRect.translatesAutoresizingMaskIntoConstraints = NO;
self.scanRect.backgroundColor = UIColor.clearColor;
[self.view addSubview:_scanRect];
[self.view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:@"V:[scanRect]"
options:NSLayoutFormatAlignAllBottom
metrics:nil
views:@{@"scanRect": _scanRect}]];
[self.view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:@"H:[scanRect]"
options:NSLayoutFormatAlignAllBottom
metrics:nil
views:@{@"scanRect": _scanRect}]];
[_scanRect startAnimating];
}
- (void)viewDidLoad { - (void)viewDidLoad {
[super viewDidLoad]; [super viewDidLoad];
@ -26,21 +54,7 @@
options:NSLayoutFormatAlignAllBottom options:NSLayoutFormatAlignAllBottom
metrics:nil metrics:nil
views:@{@"previewView": _previewView}]]; views:@{@"previewView": _previewView}]];
self.scanRect = [[ScannerOverlay alloc] initWithFrame:self.view.bounds]; [self setupScanRect:self.view.bounds];
self.scanRect.translatesAutoresizingMaskIntoConstraints = NO;
self.scanRect.backgroundColor = UIColor.clearColor;
[self.view addSubview:_scanRect];
[self.view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:@"V:[scanRect]"
options:NSLayoutFormatAlignAllBottom
metrics:nil
views:@{@"scanRect": _scanRect}]];
[self.view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:@"H:[scanRect]"
options:NSLayoutFormatAlignAllBottom
metrics:nil
views:@{@"scanRect": _scanRect}]];
[_scanRect startAnimating];
self.scanner = [[MTBBarcodeScanner alloc] initWithPreviewView:_previewView]; self.scanner = [[MTBBarcodeScanner alloc] initWithPreviewView:_previewView];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancel)]; self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancel)];
[self updateFlashButton]; [self updateFlashButton];