Lifecycle processing for app development

Get to the current view

-(Uiviewcontroller *) PRESENTINGVC: (uiapplication *) application{

UIWindow * window = Application.keywindow;

if (window.windowlevel! = uiwindowlevelnormal) {

Nsarray *windows = [[UIApplication sharedapplication] windows];

For (UIWindow * Tmpwin in Windows) {

if (Tmpwin.windowlevel = = Uiwindowlevelnormal) {

window = Tmpwin;

Break

}

}

}

Uiviewcontroller *result = Window.rootviewcontroller;

while (Result.presentedviewcontroller) {

result = Result.presentedviewcontroller;

}

if ([Result Iskindofclass:[mytabbarviewcontroller class]]) {

result = [(Mytabbarviewcontroller *) result Selectedviewcontroller];

}

if ([Result Iskindofclass:[uinavigationcontroller class]]) {

result = [(Uinavigationcontroller *) result Topviewcontroller];

}

return result;

}

#p-action when the application exits the background

-(void) Applicationdidenterbackground: (uiapplication *) Application {

Actions to go into the background

Uiviewcontroller *VIEWC = [self presentingvc:application];

NSLog (@ "viewc==%@", [VIEWC class]);

if ([Viewc class]== [Loginviewcontroller class]) {

[[Nsuserdefaults Standarduserdefaults] setobject:@ "1" forkey:@ "root"];

}else{

[[Nsuserdefaults Standarduserdefaults] setobject:@ "0" forkey:@ "root"];

[Self gobackforviewcontroller];

}

}

#p-Operations that the application enters the background and then enters the foreground

-(void) Applicationwillenterforeground: (uiapplication *) Application {

---Native page for actions performed in the foreground

if ([[[[[Nsuserdefaults Standarduserdefaults] objectforkey:@ "root"] isequaltostring:@ "0"]) {

Do not process into the native page

[Self gobackforviewcontroller];

}

If you stay on the H5 page, reload to prevent the session from expiring.

else{

[Self showviewcontrollers];

}

}

Documents: Use the application lifecycle in iOS app development for related operations that can handle the interaction issues between application lifecycles well

Lifecycle processing for app development