如何在iOS和Android中获得应用程序的闲置状态？
在我的应用程序中，我有活动A和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恢复到活动AI不知道如何找出应用程序的空闲时间。任何一个知道的人都可以帮我解决这个问题。
在iOS中：
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. 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.h文件中
#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）在main.m
#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）在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 }
希望这可以帮助….
你的问题是关于iOS还是Android？
在iOS中，在你的AppDelegate中，你的应用程序调用的方法将在后台和前台input，你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/closures定时器，当您在屏幕上保持某个秒/分钟时屏幕closures。 使用手电筒应用程序或使用加速度计的游戏是很常见的。
我不了解Android。