Summary of Agent methods for 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"];

• Texting

  [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 delegate;

Proxy methods for Uiapplicationdelegate

The pragma mark program is loaded (boot complete) and is called once

• (BOOL) Application: (uiapplication) Application didfinishlaunchingwithoptions: (nsdictionary) launchOptions

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

• (void) Applicationwillresignactive: (uiapplication *) application

The pragma mark program enters the background and calls

• (void) Applicationdidenterbackground: (uiapplication *) application

Pragma mark program is about to enter the foreground when the call

• (void) Applicationwillenterforeground: (uiapplication *) application

Called when the pragma mark application gets focus (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

The pragma mark program receives a memory warning called

• (void) Applicationdidreceivememorywarning: (uiapplication *) application