如何在IOS和android中获取应用程序的空闲状态？

在我的应用程序中，我有活动A & B.在活动B我想检查应用程序的空闲状态，如果用户没有交互或最小化应用程序几分钟意味着如何将其恢复到活动AI不' t知道如何找出应用程序的空闲时间。可以帮助我解决这个问题。如何在IOS和android中获取应用程序的空闲状态？

来源

2013-04-27 Yugesh

在IOS

：

1）Create a new file -> Objective-C class -> type in a name (in my case TIMERUIApplication) and change the subclass to UIApplication. You may have to manually type this in the subclass field. You should now have the appropriate .h and .m files.

2）在的main.m h文件

#import <Foundation/Foundation.h> 

//the length of time before your application "times out". This number actually represents seconds, so we'll have to multiple it by 60 in the .m file 
#define kApplicationTimeoutInMinutes 5 
#define kMaxIdleTimeSeconds 60.0 

//the notification your AppDelegate needs to watch for in order to know that it has indeed "timed out" 
#define kApplicationDidTimeoutNotification @"AppTimeOut" 

@interface TIMERUIApplication : UIApplication 
{ 
    NSTimer  *myidleTimer; 
} 

-(void)resetIdleTimer; 

@end

3）.m文件

#import "TIMERUIApplication.h" 

@implementation TIMERUIApplication 

//here we are listening for any touch. If the screen receives touch, the timer is reset 
-(void)sendEvent:(UIEvent *)event 
{ 
    [super sendEvent:event]; 

    if (!myidleTimer) 
    { 
     [self resetIdleTimer]; 
    } 

    NSSet *allTouches = [event allTouches]; 
    if ([allTouches count] > 0) 
    { 
     UITouchPhase phase = ((UITouch *)[allTouches anyObject]).phase; 
     if (phase == UITouchPhaseBegan) 
     { 
      [self resetIdleTimer]; 
     } 

    } 
} 
//as labeled...reset the timer 
-(void)resetIdleTimer 
{ 
    if (myidleTimer) 
    { 
     [myidleTimer invalidate]; 
    } 
    //convert the wait period into minutes rather than seconds 
    int timeout = kApplicationTimeoutInMinutes * 60; 
    myidleTimer = [NSTimer scheduledTimerWithTimeInterval:timeout target:self selector:@selector(idleTimerExceeded) userInfo:nil repeats:NO]; 

} 
//if the timer reaches the limit as defined in kApplicationTimeoutInMinutes, post this notification 
-(void)idleTimerExceeded 
{ 
    [[NSNotificationCenter defaultCenter] postNotificationName:kApplicationDidTimeoutNotification object:nil]; 
} 


@end

4）

#import <UIKit/UIKit.h> 

#import "AppDelegate.h" 
#import "TIMERUIApplication.h" 

int main(int argc, char *argv[]) 
{ 
    @autoreleasepool { 
     return UIApplicationMain(argc, argv, NSStringFromClass([TIMERUIApplication class]), NSStringFromClass([AppDelegate class])); 
    } 
}

5）的appdelegate

#import "AppDelegate.h" 
#import "TIMERUIApplication.h" 

@implementation AppDelegate 

@synthesize window = _window; 

-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{  
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationDidTimeout:) name:kApplicationDidTimeoutNotification object:nil]; 

    return YES; 
} 

-(void)applicationDidTimeout:(NSNotification *) notif 
{ 
    //revert to Activity A 
}

希望这有助于....

来源

2013-04-27 07:46:47 lakesh

你对iOS或Android的问题吗？

在iOS上，在您的AppDelegate中，您的应用程序将调用的方法将在后台和前台输入，您可以存储每个时刻的时间戳并计算时间。

此外，你有applicationState（检查UIApplication文档），使用这个属性你可以知道你的应用程序是否正在运行active，background或inactive。

Sunny回答的setIdleTimerDisabled方法用于激活/停用定时器，当您在屏幕上保留某些秒/分钟时关闭屏幕。手电筒应用程序或使用加速度计的游戏使用它很常见。

我不了解Android。

来源

2013-04-27 07:52:40

如何在IOS和android中获取应用程序的空闲状态？

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