大约有 9,500 项符合查询结果（耗时：0.0503秒） [XML]
In Objective-C why should I check if self = [super init] is not nil?
... by standard practices, and then return prematurely if nil, basically your app is still not going to work correctly.
If you think about it, even though that if (self != nil) check is there, for proper operation of your class, 99.99% of the time you actually do need self to be non-nil.
Now, suppose...
Is it a good idea to use Google Guava library for Android development?
I am involved in the development of Android application which is a rather "thick" mobile client for a Web service. It heavily communicates with the server but also has a lot of inner logic too. So, I decided to use some features of Google Guava library to simplify development process. Here is a li...
How to use the same C++ code for Android and iOS?
.../C++ code and iOS with Objective-C++ has support too, so how can I write applications with native C/C++ code shared between Android and iOS?
...
How can I group data with an Angular filter?
...e.js library.
JSFiddle (updated):
http://jsfiddle.net/TD7t3/
The filter
app.filter('groupBy', function() {
return _.memoize(function(items, field) {
return _.groupBy(items, field);
}
);
});
Note the 'memoize' call. This underscore method caches the result of the func...
onSaveInstanceState () and onRestoreInstanceState ()
...ly when recreating activity after it was killed by the OS. Such situation happen when:
orientation of the device changes (your activity is destroyed and recreated).
there is another activity in front of yours and at some point the OS kills your activity in order to free memory (for example). Next ...
How to play an android notification sound
...anager.TYPE_NOTIFICATION);
Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notification);
r.play();
} catch (Exception e) {
e.printStackTrace();
}
You can change TYPE_NOTIFICATION to TYPE_ALARM, but you'll want to keep track of your Ringtone r in order to stop playing...
Unable to add window — token android.os.BinderProxy is not valid; is your activity running?
...isplaying-dialogs-from-background-threads/
From the stack trace above, it appears that the facebook library spins off the auth operation asynchronously, and you have a Handler - Callback mechanism (onComplete called on a listener) that could easily create this scenario.
When I've seen this reporte...
Socket.IO Authentication
...
I also liked the way pusherapp does private channels.
A unique socket id is generated and
sent to the browser by Pusher. This is
sent to your application (1) via an
AJAX request which authorizes the user
to access the channel against your
...
Kill child process when parent process is killed
...'m creating new processes using System.Diagnostics.Process class from my application. I want this processes to be killed when/if my application has crashed. But if I kill my application from Task Manager, child processes are not killed. Is there any way to make child processes dependent on p...
How to change the color of a CheckBox?
... ...
android:buttonTint="@color/tint_color" />
In projects that use AppCompat library and support Android versions below 21 you can use a compat version of the buttonTint attribute:
<CheckBox
...
app:buttonTint="@color/tint_color" />
In this case if you want to subclass a CheckBo...