測試App運行狀態

標籤：

範例程式碼：

#import "AppDelegate.h"@interface AppDelegate ()@end@implementation AppDelegate- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    // Override point for customization after application launch.    NSLog(@"%@",NSStringFromSelector(_cmd));//_cmd是iOS內建的參數可以直接列印當前的方法名    return YES;}- (void)applicationWillResignActive:(UIApplication *)application {    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.    NSLog(@"%@",NSStringFromSelector(_cmd));}- (void)applicationDidEnterBackground:(UIApplication *)application {    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.    NSLog(@"%@",NSStringFromSelector(_cmd));}- (void)applicationWillEnterForeground:(UIApplication *)application {    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.    NSLog(@"%@",NSStringFromSelector(_cmd));}- (void)applicationDidBecomeActive:(UIApplication *)application {    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.    NSLog(@"%@",NSStringFromSelector(_cmd));}- (void)applicationWillTerminate:(UIApplication *)application {    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.    NSLog(@"%@",NSStringFromSelector(_cmd));}@end

1.首次運行列印出來的訊息是：

2016-06-30 17:17:19.610 測試狀態改變[53450:338456] application:didFinishLaunchingWithOptions:

2016-06-30 17:17:19.613 測試狀態改變[53450:338456] applicationDidBecomeActive:

 

2.程式切換到後台時，列印出來的訊息是：

2016-06-30 17:17:24.516 測試狀態改變[53450:338456] applicationWillResignActive:

2016-06-30 17:17:25.096 測試狀態改變[53450:338456] applicationDidEnterBackground:

 

3.程式從後台切換到前台時，列印出來的訊息是：

2016-06-30 17:19:18.335 測試狀態改變[53450:338456] applicationWillEnterForeground:

2016-06-30 17:19:18.849 測試狀態改變[53450:338456] applicationDidBecomeActive:

 

4.程式終止時，並不會執行  applicationWillTerminate：這個方法，而是直接報錯。

測試App運行狀態