Xamarin.ios Common Controls Summary

Last Update:2015-11-18 Source: Internet

Author: User

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1.UIButton controls <pre><pre>Btn. Settitle ("test", uicontrolstate.normal);</pre></pre>Uicontrolstate enumeration types are used: <ul> <ul> <li>Normal: Default Available status</li> <li>highlighted: The state of the control when the control event is clicked</li> <li>Disabled: Control state is not available</li> <li>Selected: State when the control is selected</li> <li>application: Using an additional control state of application</li> <li>Reserved:</li> </ul> </ul> <pre><pre>UIButton btn = Uibutton.fromtype (uibuttontype.system);</pre></pre>Uibuttontype Enumeration Type: <ul> <ul> <li>System</li> <li>Custom</li> <li>Roundedrect</li> <li>Detaildisclosure</li> <li>Infolight</li> <li>Infodark</li> <li>Contactadd</li> </ul> </ul>2.UIImageView <pre><pre>New Uiimageview (); = Uiimage.fromfile ("test.jpg"); = uiviewcontentmode.center;</pre></pre>Uiviewcontentmode Enumeration Type: <ul> <ul> <li>Scaletofill</li> <li>Scaleaspectfit</li> <li>Scaleaspectfill</li> <li>Redraw</li> <li>Center</li> <li>Top,bottom,left,rigth,topleft,topright,bottomleft,bottomright</li> </ul> </ul>3.UITextView controls, displaying and editing text <pre><pre> base = new UIButton (); Uitextview Mytextview = new Uitextview (); // .... Omit part of the code BTN. Enabled = false ; Btn. Touchupinside + = (object sender, EventArgs e) => {mytextview.resignfirstresponder (); //hide keyboard }; Mytextview.delegate = new mytextviewdelegate ( this ); </pre></pre> <pre>Private classMytextviewdelegate:uitextviewdelegate { publicmytextviewdelegate (textviewappviewcontroller Parentcontroller) { this. Parentcontroller =parentcontroller; } PrivateTextviewappviewcontroller parentcontroller; public Override voideditingstarted (uitextview TextView) { this. parentController.btn.Enabled =true; } public Override voideditingended (uitextview TextView) { this. parentController.btn.Enabled =false; } public Override voidChanged (uitextview textView) {console.writeline ("Text changed!"); } }//end void Mytextviewdelegate</pre>4.UITextField control, Uikeyboardtype Enumeration type, using keyboard <pre>PrivateNSObject kbdwillshow, kbddidhide; public Override voidviewdidload () {Base. Viewdidload (); Uitextfield Emailfield=NewUitextfield (); this. Emailfield.keyboardtype =uikeyboardtype.emailaddress; this. Emailfield.returnkeytype =uireturnkeytype.done; //The Xamarin.ios. add observers to prevent the keyboard from blocking the input box this. kbdwillshow = UIKeyboard.Notifications.ObserveWillShow ((s, E) = ={rectanglef kbdbounds=e.frameend; RectangleF TextFrame= this. emailfield.frame; Textframe.y-=kbdbounds.height; this. Emailfield.frame =textFrame; }); this. kbddidhide = UIKeyboard.Notifications.ObserveDidHide ((s, E) = ={rectanglef kbdbounds=e.frameend; RectangleF TextFrame= this. emailfield.frame; Textframe.y+=kbdbounds.height; this. Emailfield.frame =textFrame; }); //the "ios-way".//this.kbdwillshow = NSNotificationCenter.DefaultCenter.AddObserver (uikeyboard.willshownotification, delega Te (nsnotification Ntf) {////RectangleF kbdbounds = uikeyboard.frameendfromnotification (ntf);////RectangleF textFrame = this.emailField.Frame;////textframe.y-= kbdbounds.height;//this.emailField.Frame = textFrame;//// });//this.kbddidhide = NSNotificationCenter.DefaultCenter.AddObserver (uikeyboard.didhidenotification, Delegate (nsnotification Ntf) {////RectangleF kbdbounds = uikeyboard.frameendfromnotification (ntf);////RectangleF textFrame = this.emailField.Frame;////textframe.y + = kbdbounds.height;//this.emailField.Frame = textFrame;//// } ); this. Emailfield.shouldreturn =Delegate(uitextfield TextField) {returnTextfield.resignfirstresponder (); }; }</pre> <pre><pre>NSNotificationCenter.DefaultCenter.RemoveObserver (this. kbdwillshow); NSNotificationCenter.DefaultCenter.RemoveObserver (this. kbddidhide);</pre></pre>5.UIProgressView controls <pre> this. Buttonstartprogress.settitle ("Tap to start progress!", uicontrolstate.normal); this. buttonstartprogress.touchupinside + =Delegate { //Disable the button this. buttonstartprogress.enabled =false; this . progressview.progress =0f; //Start A Progress Task.Factory.StartNew ( this. startprogress); } ; //Initialize The Progress View this. Progressview =NewUiprogressview (NewRectangleF (60f, 200f, 200f, 50f)); //Set The Progress view ' s initial value this. progressview.progress =0f; //Set The progress increment value//for Ten Items this. IncrementBy = 1f/10f; //Display The Controls this. View.addsubview ( this. labelstatus); this. View.addsubview ( this. buttonstartprogress); this. View.addsubview ( this. progressview);</pre> <pre>Private voidstartprogress () {floatCurrentprogress =0f; while(currentprogress <1f) {thread.sleep ( +); this . Invokeonmainthread(Delegate { //Advance The Progress this. progressview.progress + = this. incrementby; Currentprogress= this. progressview.progress; //Set the label text this. Labelstatus.text =string. Format ("current value: {0}", Math.Round (Double) this. progressview.progress,2)); if(currentprogress >=1f) { this. Labelstatus.text ="Progress completed!"; this. buttonstartprogress.enabled =true; }//End If }); }//End while</pre>6.UIScrollView controlsCommon Properties: <ul> <ul> <li>Contentsize</li> <li>Contentoffset</li> <li>Pagingenabled</li> </ul> </ul>Common Events: <ul> <ul> <li>Scrolled</li> <li>decelerationstarted</li> <li>decelerationended</li> </ul> </ul>Xamarin.ios Common Controls Summary

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Xamarin.ios Common Controls Summary

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