custom android.app.Application not firing onCreate event

Add following in your AndroidManifest.xml

<application
    android:name="MyApplication"
    android:debuggable="true"
    android:icon="@drawable/icon"
    android:label="@string/app_name">
</application>

then your onCreate() will get fired.

I had this issue and found that in my case that the whole issue was phone side. I rebooted the phone and that fixed the issue.

Very simple

In your AndroidManifest.xml, within the application tag enter the name of your Application sub-class with it's path under the android:name attribute.

Example:

<application
...
android:name=".models.custom.BaseApplication"
...
> ... </application>

You don't actually create instances of your Activities with the newoperator. Instead you start an Intent like this:

Intent start = new Intent(context, Classname.class);
context.startActivity(start);

When creating an object with the new operator, then onCreate never will be called.

[EDIT] When creating Applications with the new operator onCreate won't be called either[/EDIT]

[EDIT2] You could create a static method that returns the application like this:

public static MyApplication getApp() {
    return mInstance;
}

[/EDIT2]