objective c - iOS: UIButton doesn't show up -



objective c - iOS: UIButton doesn't show up -

i'm creating simple button , adding subview main view. doesn't show though.

this code setting up:

uibutton* contactbutton = [[uibutton alloc] init]; contactbutton.titlelabel.text = @"contact developer"; [contactbutton sizetofit]; [self.view addsubview:contactbutton]; nslog(@"x: %f || y: %f || width: %f || height: %f", contactbutton.frame.origin.x, contactbutton.frame.origin.y, contactbutton.frame.size.width, contactbutton.frame.size.height);

as may have noticed, placed bit of debug code @ end see position , dimensions of button. are: x: 0, y: 0, width: 30, height: 34

this means should showing in upper left corner doesn't. whats wrong?

one possible reason used titlelabeldirectly. consider using settitle:forstate: method instead.

to sure, consider setting backgroundcolor, debug step, create sure it's appearing.

edit others suggested, seek using buttonwithtype: instead of [[uibutton alloc] init]. suggest using uibuttontypesystem instead of uibuttontypecustom.

ios objective-c cocoa-touch uiview uibutton

Comments

Post a Comment

Popular posts from this blog

java Multi query from Mysql using netbeans -

java Multi query from Mysql using netbeans - i have java code retrieve info mysql appropriate code in netbeans.the code below. want multi query such illustration finding total number of products , on.could help me please. in advance import java.sql.*; public class javamysqlselectexample { public static void main(string[] args) { seek { string mydriver = "com.mysql.jdbc.driver"; string myurl = "jdbc:mysql://localhost/sample"; class.forname(mydriver); connection conn = drivermanager.getconnection(myurl, "root", "mypasscode1"); string query = "select * products"; statement st = conn.createstatement(); resultset rs = st.executequery(query); while (rs.next()==true) { int code = rs.getint("code"); string productname = rs.getstring("product_name"); string producttype = rs.getstring("product_type"); system.out.format(" %d, %s, %s\n", code, pr
Read more

c# - DotNetZip fails with "stream does not support seek operations" -

c# - DotNetZip fails with "stream does not support seek operations" - i using dotnetzip in c# unzip stream follows: public static void unzipfromstream(stream stream, string outdir) { //omit seek grab block using (zipfile zip = zipfile.read(stream)){ foreach (zipentry e in zip){ e.extract(outdir, extractexistingfileaction.overwritesilently); } } } stream obtained using webclient client = new webclient(); stream fs = client.openread(url); however, got next exception exception during extracting zip stream system.notsupportedexception: stream not back upwards seek operations. @ system.net.connectstream.get_position() @ ionic.zip.zipfile.read(stream zipstream, textwriter statusmessagewriter, encoding encoding, eventhandler`1 readprogress) on server side(asp.net mvc 4), returning filepathresult or filestreamresult both caused exception. should obtain stream differently on client side? or how create server homec
Read more

c++ - StartServiceCtrlDispatcher don't can access 1063 error -

c++ - StartServiceCtrlDispatcher don't can access 1063 error - i write on c++ service , have error, , don't can fixed it. my service main function int main (int argc, tchar *argv[]) {dword f; for(int i=0;i<113;i++) f = getlasterror(); servicepath = lptstr(argv[0]); outputdebugstring(_t("my sample service: main: entry")); //installservice(); service_table_entry servicetable[] = { {service_name, (lpservice_main_function) servicemain}, {null, null} }; // startservice(); if(!startservicectrldispatcher(servicetable)) { f = getlasterror(); //addlogmessage("error: startservicectrldispatcher"); } else if( memcmp(argv[argc-1],"install",7)) { installservice(); } else if( memcmp(argv[argc-1],"remove",6)) { removeservice(); } else if( memcmp(argv[argc-1],"start",5)) { startservice(); } else if( memcmp(argv[argc-1],"stop",4))
Read more