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APP开发之IOS SWIFT常用问题及操作方法介绍

发布时间:2022-11-29 10:15:31
浏览次数:

XIANZAISHIXUEXIHEKAIFAIOSYINGYONGCHENGXUDEZUIHAOSHIJI,YINWEIQUANXINDEIOSJIXUNSUDEYUYAN,RANGKAIFASHIBANGONGBEI。XIAMIANFANGWEIWANGLUO(www.szfangwei.cn)FENXIANGPINGSHIYINGYONGKAIFACHANGJIANWENTIJICAOZUOFANGFA。

UITableView显示加载状态

//显示加载状态

func setupinatescrollingview(){

self.is_loading=true

打印('加载中)

ZIWO。activity view indicator=UIActivityIndicatorView(activityindicatorstyle : uiactivityindicatorviewstyle .HUISE)

ZIWO。HUODONGCHAKANZHISHIQI。frame=CGRect(x : 0,y: 0,KUANDU: 80,GAODU: 80)

ZIWO。HUODONGCHAKANZHISHIQI。ZHONGXIN=ZIWO。CHAKAN。ZHONGXIN

ZIWO。HUODONGCHAKANZHISHIQI。color=uiYANSE。SHENHUISE()

ZIWO。HUODONGCHAKANZHISHIQI。KAISHIZHIZUODONGHUA()

ZIWO。CHAKAN。TIANJIAZISHITU(HUODONGSHITUZHISHIQI)

}

//加载结束

RUGUOZIWO。HUODONGCHAKANZHISHIQI。ZHENGZAIZHIZUO(){

ZIWO。HUODONGCHAKANZHISHIQI。TINGZHIDONGHUA()

self.is_loading=false

打印('加载完成)

}

状态栏显示联网状态

RANGapp=uiYINGYONG。GONGXIANGYINGYONGCHENGXU()

app。networkactivityindicatorvisible=true//XIANSHI

app。networkactivityindicatorvisible=false//BUXIANSHI

设置消息推送

YI、welcome手机购彩TUBIAOTUBIAOYOUSHANGJIAOTISHIXIAOXIGESHU

RANGapp=uiYINGYONG。GONGXIANGYINGYONGCHENGXU()

if (UIDevice.currentDevice().ZUOWEINSStringDEXITONGBANBEN)。FUDIANZHI=8.0 {

let settings=UIUserNotificationSettings(SHIYONGYULEIXING3360 .HUIZHANG,LEIBIE:WU)

app。ZHUCEYONGHUTONGZHISHEZHI(SHEZHI)

}

app。applicationiconbadgenumber=123

二、设置消息推送

RANGapp=uiYINGYONG。GONGXIANGYINGYONGCHENGXU()

if (UIDevice.currentDevice().ZUOWEINSStringDEXITONGBANBEN)。FUDIANZHI=8.0 {

let settings=UIUserNotificationSettings(DUIYULEIXING3360[.HUIZHANG,SHENGYIN,JINGBAO],LEIBIE:WU)

app。ZHUCEYONGHUTONGZHISHEZHI(SHEZHI)

}否则{

app。registerforremotentifications()//IOs 8YIXIAZHUCEXIAOXI-LAODE

}

UIVIEW 视图属性

方式

BIAOQIAN:UIViewSHITUSUOYOUZILEI,BAOKUOSHITUHEKONGJIAN,DOUKEYIQIYIGEBIAOQIANSHUZIBIANHAO,CHENGXUZHONGKEYITONGGUOGAIBIANHAO,ZHAODAOZHEIGEZUJIAN

启用用户交互

多重触摸

XILAZIMUDEDIYIGEZIMU

不透明的

隐藏的

清除图形上下文

JIANJIZISHITU:RUGUOYOUZISHITU,MEIYOUWANQUANBAOHANZAIFUSHITUNEI,XUANZHONGHOU,ZHIZAIFUSHITUZHONGDEBUFENHUIXIANSHI,MORENJINYONG;

ZIDONGDIAOZHENGZISHITUDEDAXIAOYUNXUiosDIAOZHENGZISHITUDAXIAO,MORENXUANZHONG;

拉伸

 LASHEN)KEYIHULVE,ZHIYOUDANGPINGMUSHANGDIAOZHENGJUXINGSHITUDAXIAOQIEXUYAOZHONGXINHUIZHISHI,CAIXUYAOLASHEN。ZHEILIXUYAOSHEZHISIGEFUDIANZHI(0.0-1.0),RUGUOXIWANGMEITIAOBIAN10%SHIBUKEYILASHEN,NEIMEx yDOUZHIDINGWEI0.1,KUANDU、GAODUDOUSHEWEI0.8。MORENx yDOUSHI0.0,KUANDUGAODUWEI1.0