Android Question 1

microsoftinternetexplorer4 0 2 documentnotspecified 7.8 normal 0

1. the maximum number of Short MessagesByte?

microsoftinternetexplorer4 0 2 documentnotspecified 7.8 normal 0

Chinese70 (Including punctuation), English160Bytes

2. AndroidWhat are the features and differences of animations in the project?

two types: tween animation, frame animation. tween animation, which allows view components to move, zoom in, zoom out, and change transparency; another frame animation, traditional animation methods, it is achieved through sequential playback of arranged images, similar to movies.

3,HandlerMechanism Principle

andriod provides handler and logoff . handler first-in-first-out principle. logoff class is used to manage message exchanges between objects in a specific thread (message exchange) .

1)Logoff:A thread can generateLogoffObject To manageMessage Queue (Message Queue).

2 ) Handler: You can construct Handler Object Logoff Communication to facilitate Push New message Message Queue Or receive Logoff Slave Message Queue Retrieve ) The message sent.

3)Message Queue (Message Queue):Used to store messages placed by threads.

4 ) thread: UI thread usually main thread , and Android when you start the Program , A Message Queue .

microsoftinternetexplorer4 0 2 documentnotspecified 7.8 normal 0 4. activity What should I do if it is recycled?

microsoftinternetexplorer4 0 2 documentnotspecified 7.8 normal 0

IfDestroyThat is to say, the recovery is only from the newStartNow

microsoftinternetexplorer4 0 2 documentnotspecified 7.8 normal 0 5. in JAVA how to introduce C language?

microsoftinternetexplorer4 0 2 documentnotspecified 7.8 normal 0

JAVA call C language programs, JNI interface implementation