UIApplication Common Properties and methods summary--ios

uiapplication 1. Introduction　　　　　　　

1> a symbol of the entire application, an application on a UIApplication object, using a singleton design pattern

2> access to this singleton object via [UIApplication sharedapplication]

2. Common usage　　　　　　　　　　

1> set icon in the upper right corner of the red hint number

App.applicationiconbadgenumber = 10;

2> setting the style of the status bar

App.statusbarstyle = Uistatusbarstyleblackopaque;

3> control the display and hiding of the status bar

App.statusbarhidden = YES;

4> Show the circle above the status bar

app.networkactivityindicatorvisible = YES;

5> Open External Resources

* Open Web Page

[App Openurl:[nsurl urlwithstring:@ "http://www.baidu.com"];

* Call

[App Openurl:[nsurl urlwithstring:@ "tel://10086"];

* Send text messages

[App Openurl:[nsurl urlwithstring:@ "sms://10086"];

6> Agent Properties (when the application has some system-level events, the agent is notified and sent to the agent for processing)

@property (nonatomic,assign) id<uiapplicationdelegate> delegate;

proxy methods for Uiapplicationdelegate

#pragma mark program is loaded (started) and is called once

-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (nsdictionary *) launchOptions

Called when the #pragma mark application loses focus (an app cannot interact with the user if it loses focus)

-(void) Applicationwillresignactive: (uiapplication *) application

#pragma mark program enters the background and calls

-(void) Applicationdidenterbackground: (uiapplication *) application

#pragma mark program is about to enter the foreground, call

-(void) Applicationwillenterforeground: (uiapplication *) application

Called when the mark application gets focus #pragma (an app can interact with the user only after the focus has been focused)

-(void) Applicationdidbecomeactive: (uiapplication *) application

#pragma mark program may be called when it is about to be closed

-(void) Applicationwillterminate: (uiapplication *) application

#pragma mark program receives a memory warning called

-(void) applicationdidreceivememorywarning: (uiapplication *) application

&NBSP;