Creating objects ahead of time is an important optimization. Views are redrawn very frequently,
and many drawing
objects require expensive initialization. Creating drawing objects within your onDraw()
method significantly
reduces performance and can make your UI appear sluggish.
will still receive an IN_APP_NOTIFY broadcast intent
must be able to
handle IN_APP_NOTIFY messages
references
a specific request ID
is installed
reinstalled.
even though you never initiated the
purchase.
must handle
it usually stops sending IN_APP_NOTIFY
intents
even though your application has sent a
CONFIRM_NOTIFICATIONS message. This can occur if a device loses network connectivity
while you are sending the CONFIRM_NOTIFICATIONS message.
You can do this by
checking the orderID
even though your application has not sent a REQUEST_PURCHASE message.
may receive
informing the application that there is a purchase state change.
This applies only to items that have their purchase type set
to "managed per user account."
signs the JSON string that is contained in the PURCHASE_STATE_CHANGED
it includes the signed JSON string (unencrypted)
and the signature.
you can use the public key
portion of your RSA key pair to verify the signature.
这句话是写在第4点 Use the Custom Component中∶
Notice that the MyEditText class is now a separate class file.
1.When the class is nested in the NoteEditor class, this technique will not work.
我还没真实遇到,Diigo先!
总之告诉我们如果将自己写的View写成内部类时,
XML会找不到!