The intercept of the incoming call from an indefinite telephone number. During the call intercept the callers should present themselves and after that they will be connected with the subscriber who will have a reproduced name of the caller. One must have Caller ID in order to use Call Intercept.
Android 0 introduces modern behavior and support for handling tough keys such as BACK and MENU, along with some peculiar features to help virtual tough keys that are appearing on latter devices such as Droid. This article will give you 3 stories on the revisal. Pick the one you choose.
Remember, you should notice a fairly general pattern, in the event you were to survey the base applications in Android platform. In any case, bACK key and do something unusual. Considering the above said. Magic needs to look something really like that, in order to do this right. Remember, as of 0 we have a modern little API to make this more plain simple and easier to discover and get right, methods to intercept the BACK key in a Activity is as well amongst the simple questions we see developers ask.
In case this is probably all you care about doing. Otherwise, study on. That's where it starts getting serious.the fairly late addition to the Android platform was long use press on rough keys to perform disjunctive actions. Anyways, in 0 this was long press on HOME for latter apps switcher and long press on CALL for voice dialer. That is interesting right? In one we introduced long press on SEARCH for voice search.
The evolution of this feature resulted in a less than optimal implementation. Since actual event dispatching code had no conception of long presses and all timing for them was done on the application basic thread, the application should be slow enough to not update within the long press timeout. This resulted in plenty of duplication of code and some behavior troubles. With a real KeyEvent API and callback functions for long presses, in Android 0 this all reviewing. Now please pay attention. This kind of greatly simplify long press handling for applications. Make sure you scratch a few comments about itbelow|in the comment boxbelow.as an example. Notice that Whenever overriding default action provided under the patronage of the framework, keyLongPress to supply our own action for a long press on amongst the rough keys.
Possibly most substantially for developers usually was a corresponding revisal in the BACK semantics key. Loads of information can be found easily on the web.unlike rough keys, previously the default key handling executed the action for this key when it was pressed. In 0 BACK key is now execute on key up. Ok, and now one of the most important parts. And for existing apps will continue to execute action on key down for compatibility reasons. You should take this seriously. To enable newest behavior in your app you must set android. SdkVersion in our manifest to five or greater. You can find more information about it on this internet site.there is an example of code a Activity subclass usually can use to implement peculiar actions for a long press and pretty short CALL press key.
Note that above code assumes we have always been implementing special behavior for a key that has always been normally processed under the patronage of framework. For example, you will need to override onKeyDown to have framework track it, in case you want to implement long presses for another key. Now we come to the narration original motivation for the majority of overlooking. Droid and another upcoming devices. While crtaking food a place for the tough keys to live as touch sensitive areas, before physic buttons, these devices have a touch sensor that extends visible outside screen. The rather low level input scheme looks for touches on the screen in this place.
Though the generated events will have a modern FLAG_VIRTUAL_HARD_KEY bit set to identify them, with the intention to applications that kind of basically look like real rough keys. In spite of that flag, in nearly all cases an application could handle this kind of rough key events in the same way it has usually done for real rough keys. The solution for this in 0 has been to introduce a conception of a canceled key event. We've usually seen this in the previous novel, where handling a long press should cancel subsequent up event. Whenever moving from a virtual key press on to screen will cause virtual key to be canceled when it goes up, in a related way.
Yes, that's right! In reality the previous code usually needs care of this when checking isCanceled on key canceled virtual keys, up or even long presses will be ignored. It is they shall rarely be used under the patronage of applications and often with understanding that in future there can be more reasons for a key event to be canceled, there have usually been individual flags for those 2 cases. For existing application, where BACK key compatibility has always been turned on to execute the action on down, there is still accidentally trouble detecting a back press when intending to perform a swipe. The user has been much less possibly to accidentally hit it than plenty of the additional keys, though there was usually no solution for this except to update an application to specify it targets SDK version five or later, fortunately the back key always was all in all positioned on a far virtual side key place.
Now pay attention please. Writing an application that works well on pre0" and also 0 and later platform versions was always fairly good for most simple cases. There's code that comes handy when you want to handle the back key in an activity properly on all platform versions. However, one final topic that is worth covering is probably ways to carefully handle events in raw dispatch functions such as onDispatchEvent or onPreIme. Since you can't have confidence about plenty of help framework provides when it calls higherlevel functions such as onKeyDown, these require some more care. That's right. Code below shows how you will intercept the BACK dispatching key such that you carefully execute our own action when it has probably been release.Consequently, call to getKeyDispatcherState returns an object that has been used to track current key state in your window. It was probably mostly reachable on View class, and a Activity will use any of its views to retrieve object when needed. This is the case. Call to getKeyDispatcherState returns an object that probably was used to track current key state in the window. Furthermore, it is primarily attainable on View class.
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