android-application-class

ContentProvider not called onCreate after deleting database

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问题 I have created ContentProvider which creates one Database on application launching. Now In that application, I am doing process of deleting database when user logout from app. After that when I come again to login, the ContentProvider cant call onCreate() of overrided class. Is there any way to recreate database using ContentProvider? 回答1: I found solution as, First of all I referred Refresh/Reload database reference in custom ContentProvider after restore but not satisfied with answer

How to extend application class in xamarin android

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问题 I want to extend the Android application and I want to override oncreate method. But for some reason its been very terrible...Only if I remove [Application] I am able to run it but according to this link we have to add [Application] [Application] public class MainApp : Application { public MainApp(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer) { } public override void OnCreate() { base.OnCreate(); //app init ... } } Can anybody clarify me what is the

How to extend application class in xamarin android

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I want to extend the Android application and I want to override oncreate method. But for some reason its been very terrible...Only if I remove [Application] I am able to run it but according to this link we have to add [Application] [Application] public class MainApp : Application { public MainApp(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer) { } public override void OnCreate() { base.OnCreate(); //app init ... } } Can anybody clarify me what is the rightway to extend application class in xamarin android Update If I don't remove [application] I am exactly

Android 7.0 and 7.1 getApplication() ClassCastException

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问题 In Developer Console I see a lot of crashes with stacktrace like this java.lang.RuntimeException: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2984) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3045) at android.app.ActivityThread.-wrap14(ActivityThread.java:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1642) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:154) at android

Why extend the Android Application class?

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问题 An extended Application class can declare global variables. Are there other reasons? 回答1: Offhand, I can't think of a real scenario in which extending Application is either preferable to another approach or necessary to accomplish something. If you have an expensive, frequently used object you can initialize it in an IntentService when you detect that the object isn't currently present. Application itself runs on the UI thread, while IntentService runs on its own thread. I prefer to pass data