我要评论#import <corenfc/corenfc.h>
@interface viewcontroller ()<nfcndefreadersessiondelegate>
@property (nonatomic,retain) uibutton *begintestbtn;
@property (nonatomic,retain) uilabel *textlabel;
@end
@implementation viewcontroller
- (void)viewdidload {
[super viewdidload];
_begintestbtn = [[uibutton alloc]initwithframe:cgrectmake(100, 100, 100, 50)];
[_begintestbtn settitle:@"开始读取" forstate:uicontrolstatenormal];
[_begintestbtn settitlecolor:[uicolor bluecolor] forstate:uicontrolstatenormal];
_begintestbtn.titlelabel.textalignment = nstextalignmentleft;
[_begintestbtn addtarget:self action:@selector(begintestbtnaction) forcontrolevents:uicontroleventtouchupinside];
_textlabel = [[uilabel alloc]initwithframe:cgrectmake(120, 180, 200, 50)];
_textlabel.text = @"待读取";
_textlabel.textcolor = [uicolor orangecolor];
[self.view addsubview:_textlabel];
nslog(@"进入vc");
[self.view addsubview:_begintestbtn];
[self.view addsubview:_textlabel];
// do any additional setup after loading the view, typically from a nib.
}
-(void)begintestbtnaction
{
/**
三个参数
第一个参数：代理对象
第二个参数：线程
第三个参数：session读取一个还是多个ndef。yes：读取一个结束，no：读取多个
*/
nfcndefreadersession *session = [[nfcndefreadersession alloc] initwithdelegate:self queue:dispatch_queue_create(null, dispatch_queue_concurrent) invalidateafterfirstread:yes];
[session beginsession];
}
/**
代理
*/
- (void) readersession:(nonnull nfcndefreadersession *)session diddetectndefs:(nonnull nsarray<nfcndefmessage *> *)messages {
__weak typeof(self) weakself=self;
dispatch_async(dispatch_get_main_queue(), ^{
weakself.textlabel.text = @"读取成功";
});
for (nfcndefmessage *message in messages) {
for (nfcndefpayload *payload in message.records) {
nslog(@"payload data:%@",payload.payload);
}
}
}
- (void)readersession:(nfcndefreadersession *)session didinvalidatewitherror:(nserror *)error{
nslog(@"error:%@",error);
__weak typeof(self) weakself=self;
dispatch_async(dispatch_get_main_queue(), ^{
weakself.textlabel.text = @"读取失败";
});
}
如对本文有疑问， 点击进行留言回复！！
网友评论