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How to detect first time app launch on an iPhone

由 杀马特。学长 韩版系。学妹 提交于 2019-11-26 03:17:06
问题 How can I detect the very first time launch of - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // if very first launch than perform actionA // else perform actionB } method? 回答1: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { if (![[NSUserDefaults standardUserDefaults] boolForKey:@"HasLaunchedOnce"]) { [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@

Android singleTask or singleInstance launch mode? [closed]

由 别等时光非礼了梦想. 提交于 2019-11-26 03:03:20
I have an app that has a list as its main activity and then you can click items which opens a detailed view of that item. I also have a search activity that is similar to the main activity and works as intended. However I want this search activity to only have once instance on the stack so that users can search multiple times and clicking back would return them to the previouse view that they were on before they started searching (rather than go back to the previouse search results) both the singleTask and singelInstance launch mode seems to do what I want so Im not sure which one I should be

Determine if an app exists and launch that app on iOS

由 三世轮回 提交于 2019-11-26 02:16:10
问题 Is there a way to check iOS to see if another app has been installed and then launched? If memory serves me this was not possible in early versions but has this been changed? 回答1: Doable, but tricky. Launching installed apps, like the FB or Twitter apps, is done using the Custom URL Scheme. These can be used both in other apps as well as on web sites. Here's an article about how to do this with your own app. Seeing if the URL is there, though, can be tricky. A good example of an app that

Android Respond To URL in Intent

由 ╄→гoц情女王★ 提交于 2019-11-26 01:21:54
问题 I want my intent to be launched when the user goes to a certain url: for example, the android market does this with http://market.android.com/ urls. so does youtube. I want mine to do that too. 回答1: I did it! Using <intent-filter>. Put the following into your manifest file: <intent-filter> <action android:name="android.intent.action.VIEW" /> <category android:name="android.intent.category.DEFAULT" /> <category android:name="android.intent.category.BROWSABLE" /> <data android:host="www.youtube

Android singleTask or singleInstance launch mode? [closed]

由 徘徊边缘 提交于 2019-11-26 01:12:58
问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 12 months ago . Locked . This question and its answers are locked because the question is off-topic but has historical significance. It is not currently accepting new answers or interactions. I have an app that has a list as its main activity and then you can click items which opens a
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