美眉的禁小游戏,pagefile.sys是什么文件,香蕉女孩
之前在android中使用过zxing识别二维码，zxing也有对应的ios版本，经过了解，zbar也是一个常用的二维码识别软件，并分别提供了ios和android的sdk可供使用，最终我选择了zbar进行二维码识别，它的注释清晰，便于使用。
zbar为我们提供了两种使用方式，一种是直接调用zbar提供的zbarreaderviewcontroller打开一个扫描界面，另一种方式是使用zbar提供的可以嵌在其他视图中的zbarreaderview，实际项目中我们更可能会使用第二种方式，这可以让我们对界面做更多的定制。
zbar使用起来也非常简单，将zbarsdk导入项目，在需要使用zbar的文件中导入zbarsdk.h头文件即可
我要评论
#pragma mark 初始化扫描
- (void)initscan
{
readview = [zbarreaderview new];
readview.backgroundcolor = [uicolor clearcolor];
readview.frame = cgrectmake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
readview.readerdelegate = self;
readview.allowspinchzoom = yes;//使用手势变焦
readview.trackingcolor = [uicolor redcolor];
readview.showsfps = no;// 显示帧率 yes 显示 no 不显示
//readview.scancrop = cgrectmake(0, 0, 1, 1);//将被扫描的图像的区域
uiimage *hbimage=[uiimage imagenamed:@"pick_bg.png"];
scanzomeback=[[uiimageview alloc] initwithimage:hbimage];
//添加一个背景图片
cgrect mimagerect=cgrectmake((readview.frame.size.width-200)/2.0, (readview.frame.size.height-200)/2.0, 200, 200);
[scanzomeback setframe:mimagerect];
readview.scancrop = [self getscancrop:mimagerect readerviewbounds:readview.bounds];//将被扫描的图像的区域
[readview addsubview:scanzomeback];
[readview addsubview:readlineview];
[self.view addsubview:readview];
[readview start];
}
#pragma mark 获取扫描区域
-(cgrect)getscancrop:(cgrect)rect readerviewbounds:(cgrect)readerviewbounds
{
cgfloat x,y,width,height;
x = rect.origin.x / readerviewbounds.size.width;
y = rect.origin.y / readerviewbounds.size.height;
width = rect.size.width / readerviewbounds.size.width;
height = rect.size.height / readerviewbounds.size.height;
return cgrectmake(x, y, width, height);
}
#pragma mark 扫描动画
-(void)loopdrawline
{
cgrect rect = cgrectmake(scanzomeback.frame.origin.x, scanzomeback.frame.origin.y, scanzomeback.frame.size.width, 2);
if (readlineview) {
[readlineview removefromsuperview];
}
readlineview = [[uiimageview alloc] initwithframe:rect];
[readlineview setimage:[uiimage imagenamed:@"line.png"]];
[uiview animatewithduration:3.0
delay: 0.0
options: uiviewanimationoptioncurveeasein
animations:^{
//修改fream的代码写在这里
readlineview.frame =cgrectmake(scanzomeback.frame.origin.x, scanzomeback.frame.origin.y+scanzomeback.frame.size.height, scanzomeback.frame.size.width, 2);
[readlineview setanimationrepeatcount:0];
}
completion:^(bool finished){
if (!is_anmotion) {
[self loopdrawline];
}
}];
[readview addsubview:readlineview];
}
#pragma mark 获取扫描结果
- (void)readerview:(zbarreaderview *)readerview didreadsymbols:(zbarsymbolset *)symbols fromimage:(uiimage *)image
{
// 得到扫描的条码内容
const zbar_symbol_t *symbol = zbar_symbol_set_first_symbol(symbols.zbarsymbolset);
nsstring *symbolstr = [nsstring stringwithutf8string: zbar_symbol_get_data(symbol)];
if (zbar_symbol_get_type(symbol) == zbar_qrcode) {
// 是否qr二维码
}
for (zbarsymbol *symbol in symbols) {
[stxtfield settext:symbol.data];
break;
}
[readerview stop];
[readerview removefromsuperview];
}
github地址:https://github.com/zbar/zbar
以上所述是小编给大家介绍的ios中使用zbar扫描二维码自定义扫描界面，希望对大家有所帮助
如对本文有疑问，请在下面进行留言讨论，广大热心网友会与你互动！！ 点击进行留言回复
网友评论