open source

2020-11-11 16:17:13 +08:00
parent 4d989f3ecb
commit bc4ca748de
2441 changed files with 623057 additions and 2 deletions
@@ -0,0 +1,220 @@
+
+#import "ScanViewController.h"
+#import <AVFoundation/AVFoundation.h>
+#import "ViewController.h"
+#import "JSBridge.h"
+
+#define SCREEN_HEIGHT [UIScreen mainScreen].bounds.size.height
+#define SCREEN_WIDTH  [UIScreen mainScreen].bounds.size.width
+#define SCREEN_BOUNDS  [UIScreen mainScreen].bounds
+
+#define TOP (SCREEN_HEIGHT-220)/2
+#define LEFT (SCREEN_WIDTH-220)/2
+
+#define kScanRect CGRectMake(LEFT, TOP, 220, 220)
+
+@interface ScanViewController ()<AVCaptureMetadataOutputObjectsDelegate>{
+    int num;
+    BOOL upOrdown;
+    NSTimer * timer;
+    CAShapeLayer *cropLayer;
+}
+@property (strong,nonatomic)AVCaptureDevice * device;
+@property (strong,nonatomic)AVCaptureDeviceInput * input;
+@property (strong,nonatomic)AVCaptureMetadataOutput * output;
+@property (strong,nonatomic)AVCaptureSession * session;
+@property (strong,nonatomic)AVCaptureVideoPreviewLayer * preview;
+@property (strong,nonatomic)UIImageView * line;
+
+@end
+
+@implementation ScanViewController
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+    // Do any additional setup after loading the view, typically from a nib.
+    
+   
+}
+
+-(void)configView{
+    
+    UIImageView * imageView = [[UIImageView alloc]initWithFrame:kScanRect];
+    imageView.image = [UIImage imageNamed:@"pick_bg"];
+    [self.view addSubview:imageView];
+    
+    upOrdown = NO;
+    num =0;
+    _line = [[UIImageView alloc] initWithFrame:CGRectMake(LEFT, TOP+10, 220, 2)];
+    _line.image = [UIImage imageNamed:@"line.png"];
+    [self.view addSubview:_line];
+    
+    timer = [NSTimer scheduledTimerWithTimeInterval:.02 target:self selector:@selector(animation1) userInfo:nil repeats:YES];
+    
+    
+    UIImage* pImageButtonBack = [UIImage imageNamed:@"close.png"];
+    
+    float offset = 30;
+    float width = pImageButtonBack.size.width;
+    float height = pImageButtonBack.size.height;
+   
+    UIButton* pButtonBack = [[UIButton alloc] initWithFrame:CGRectMake(0,0,width,height)];
+    pButtonBack.titleEdgeInsets = UIEdgeInsetsMake(44.0f, 0.0f, 0.0f, 0.0f);
+    //[pButtonBack setTitle:@"后退" forState:UIControlStateNormal];
+    [pButtonBack setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
+    pButtonBack.titleLabel.font = [UIFont systemFontOfSize:13.0];
+    [pButtonBack setBackgroundImage:pImageButtonBack forState:UIControlStateNormal];
+    pButtonBack.center = CGPointMake(offset,offset);
+    [pButtonBack addTarget:self action:@selector(buttonClickBack:) forControlEvents:UIControlEventTouchUpInside];
+    [self.view addSubview:pButtonBack];
+
+}
+-(void)buttonClickBack:(id)sender
+{
+    [self dismissViewControllerAnimated:NO completion:nil];
+}
+
+-(void)viewWillAppear:(BOOL)animated {
+    [super viewWillAppear: animated];
+    [self configView];
+    //[self setCropRect:kScanRect];
+    [self performSelector:@selector(setupCamera) withObject:nil afterDelay:0.3];
+}
+
+-(void)animation1
+{
+    if (upOrdown == NO) {
+        num ++;
+        _line.frame = CGRectMake(LEFT, TOP+10+2*num, 220, 2);
+        if (2*num == 200) {
+            upOrdown = YES;
+        }
+    }
+    else {
+        num --;
+        _line.frame = CGRectMake(LEFT, TOP+10+2*num, 220, 2);
+        if (num == 0) {
+            upOrdown = NO;
+        }
+    }
+}
+
+- (void)setCropRect:(CGRect)cropRect{
+    cropLayer = [[CAShapeLayer alloc] init];
+    CGMutablePathRef path = CGPathCreateMutable();
+    CGPathAddRect(path, nil, cropRect);
+    CGPathAddRect(path, nil, self.view.bounds);
+    
+    [cropLayer setFillRule:kCAFillRuleEvenOdd];
+    [cropLayer setPath:path];
+    [cropLayer setFillColor:[UIColor blackColor].CGColor];
+    [cropLayer setOpacity:0.6];
+    
+    
+    [cropLayer setNeedsDisplay];
+    
+    [self.view.layer addSublayer:cropLayer];
+}
+- (void)setupCamera
+{
+    AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
+    if (device==nil) {
+        UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"提示" message:@"设备没有摄像头" preferredStyle:UIAlertControllerStyleAlert];
+        [alert addAction:[UIAlertAction actionWithTitle:@"确认" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
+            
+        }]];
+        [self presentViewController:alert animated:YES completion:nil];
+        return;
+    }
+    // Device
+    _device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
+    
+    // Input
+    _input = [AVCaptureDeviceInput deviceInputWithDevice:self.device error:nil];
+    
+    // Output
+    _output = [[AVCaptureMetadataOutput alloc]init];
+    [_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
+    
+    //设置扫描区域
+    CGFloat top = TOP/SCREEN_HEIGHT;
+    CGFloat left = LEFT/SCREEN_WIDTH;
+    CGFloat width = 220/SCREEN_WIDTH;
+    CGFloat height = 220/SCREEN_HEIGHT;
+    ///top 与 left 互换  width 与 height 互换
+    [_output setRectOfInterest:CGRectMake(top,left, height, width)];
+
+   
+    // Session
+    _session = [[AVCaptureSession alloc]init];
+    [_session setSessionPreset:AVCaptureSessionPresetHigh];
+    if ([_session canAddInput:self.input])
+    {
+        [_session addInput:self.input];
+    }
+    
+    if ([_session canAddOutput:self.output])
+    {
+        [_session addOutput:self.output];
+    }
+    
+    // 条码类型 AVMetadataObjectTypeQRCode
+    [_output setMetadataObjectTypes:[NSArray arrayWithObjects:AVMetadataObjectTypeQRCode, nil]];
+    
+    // Preview
+    _preview =[AVCaptureVideoPreviewLayer layerWithSession:_session];
+    _preview.videoGravity = AVLayerVideoGravityResizeAspectFill;
+    _preview.frame =self.view.layer.bounds;
+    [self.view.layer insertSublayer:_preview atIndex:0];
+    
+    // Start
+    [_session startRunning];
+}
+
+#pragma mark AVCaptureMetadataOutputObjectsDelegate
+- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection
+{
+    NSString *stringValue;
+    
+    if ([metadataObjects count] >0)
+    {
+        //停止扫描
+        [_session stopRunning];
+        [timer setFireDate:[NSDate distantFuture]];
+        
+        AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex:0];
+        stringValue = metadataObject.stringValue;
+        
+        [JSBridge onScanResult:stringValue];
+        NSLog(@"scan result：%@",stringValue);
+        [self dismissViewControllerAnimated:NO completion:nil];
+    } else {
+        NSLog(@"no scan result");
+        [self dismissViewControllerAnimated:NO completion:nil];
+        return;
+    }
+    
+}
+
+- (void)didReceiveMemoryWarning {
+    [super didReceiveMemoryWarning];
+    // Dispose of any resources that can be recreated.
+}
+- (BOOL)shouldAutorotate
+{
+    return YES;//支持转屏
+}
+//-------------------------------------------------------------------------------
+- (BOOL)prefersStatusBarHidden
+{
+    return YES;//隐藏为YES，显示为NO
+}
+-(NSUInteger)supportedInterfaceOrientations
+{
+    return UIInterfaceOrientationMaskPortrait;
+}
+-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
+    return UIInterfaceOrientationPortrait;
+}
+
+@end