ios - Permanently saving data using swift 3 -

-



i made todo list app enter task in 1 view controller , saves data in array of view controller , adds table. problem when close app, new task data gone. can help?

i tried using userdefaults didn't work quite or didn't use right.

this code view controller type in new task:

@ibaction func addtaskbutton(_ sender: any) {     if (textfield.text != "") {         task.append(textfield.text!)          let task = userdefaults.standard.set(task, forkey: "xx")          textfield.text = ""         textlabel.text = "saved!"         timer = timer.scheduledtimer(timeinterval: 1.6, target: self, selector: #selector(addtaskviewcontroller.hide), userinfo: nil, repeats: true)          textlabel.ishidden = false     } }

this code view controller try save data , place in table

var task = ["pray", "code", "work-out"] var school = ["email collin college","email pqc","create file doccumensts"] var shoppinglist = ["kd9 black","roshrun black","nike huarache black","white shirt","black shirt", "black work out pnats", "white socks"] var prayer = ["school","family","drive & grace"] var workout = ["legs","caffs","push ups","arms","chest press","squats", "back"]  class add_task_tableviewcontroller: uiviewcontroller,uitableviewdelegate, uitableviewdatasource {     @iboutlet weak var tasktableview: uitableview!      public func tableview(_ tableview: uitableview, numberofrowsinsection section: int) -> int     {         return (task.count)     }      public func tableview(_ tableview: uitableview, cellforrowat indexpath: indexpath) -> uitableviewcell     {         let cell = uitableviewcell(style: uitableviewcellstyle.default, reuseidentifier: "cell")         cell.textlabel?.text = task[indexpath.row]         return(cell)     }      func tableview(_ tableview: uitableview, commit editingstyle: uitableviewcelleditingstyle, forrowat indexpath: indexpath)     {         if editingstyle == uitableviewcelleditingstyle.delete         {             task.remove(at: indexpath.row)             tasktableview.reloaddata()         }     }      override func viewdidappear(_ animated: bool) {         tasktableview.reloaddata()     }

you can use sqlite database maintain draft messages or values can used later when open app again.





wiki

Comments

Post a Comment

Popular posts from this blog

python - Read npy file directly from S3 StreamingBody -

-
i have many .npy (numpy) , .json files saved in s3, need download , load these files. for json files downloading files , loading dictionary using following code: obj = s3.object(bucket, key) response = obj.get() body = response['body'].read().decode('utf-8') data = json.loads(body) that way avoid writing .json file disk , reading it. now want same .npy files, equivalent? currently downloading file, saving temp file on disk , loading np.load avoid if possible. following https://stackoverflow.com/a/28196540/3509999 : obj = s3.object(bucket, key) io.bytesio(obj.get()["body"].read()) f: # rewind file f.seek(0) arr = np.load(f) wiki
Read more

kotlin - Out-projected type in generic interface prohibits the use of metod with generic parameter -

-
i start using kotlin , defined interface this: interface aadapter<vh : recyclerview.viewholder> { fun oncreateaviewholder(parent: viewgroup): vh fun onbindaviewholder(v: vh, position: int) } and when try use on code: class klasa ( private val adapter: aadapter<*> ) { fun dosth(){ //... val vh = this.adapter.oncreateaviewholder(parent) //on below line error adapter.onbindaviewholder(v, position) //... } } i error out-projected type 'aadapter<*>' prohibits use of 'public abstract fun onbindaviewholder(v: t, position: int): unit i tied add "in" or "out" definition i'm confused. how allow it. replace aadapter<*> aadapter<recyclerview.viewholder> . class klasa ( private val adapter: aadapter<recyclerview.viewholder> ) { // ... because have declared aadapter has type parameter vh type subclass of recyclerview....
Read more

Asterisk AGI Python Script to Dialplan does not work -

-
i'm stuck project have check database of sip extension incoming caller id , dial sip extension. below receive when run script on asterisk cli. -- registered sip '9125' @ 192.168.1.102:50142 > saved useragent "zoiper rv2.8.40" peer 9125 [2017-08-22 13:53:33] notice[5095]: chan_sip.c:24558 handle_response_peerpoke: peer '9125' reachable. (17ms / 2000ms) == using sip rtp tos bits 184 == using sip rtp cos mark 5 -- executing [0112617769@from-trunk:1] answer("sip/obitrunk1-0000000d", "") in new stack > 0x1ca50d0 -- probation passed - setting rtp source address 192.168.1.98:16834 -- executing [0112617769@from-trunk:2] agi("sip/obitrunk1-0000000d", "test.py") in new stack -- launched agi script /var/lib/asterisk/agi-bin/test.py args: ['/var/lib/asterisk/agi-bin/test.py'] env line: agi_request: test.py env line: agi_channel: sip/obitrunk1-0000000d env line: agi_language: en env line: a...
Read more