大约有 8,600 项符合查询结果（耗时：0.0250秒） [XML]
How to set timer in android?
...long the way, you can use the CountDownTimer class that is available since API level 1.
new CountDownTimer(30000, 1000) {
public void onTick(long millisUntilFinished) {
editText.setText("Seconds remaining: " + millisUntilFinished / 1000);
}
public void onFinish() {
edit...
Relative paths in Python
... if you're using setuptools, you should probably use its package resources API instead.
UPDATE: I'm responding to a comment here so I can paste a code sample. :-)
Am I correct in thinking that __file__ is not always available (e.g. when you run the file directly rather than importing it)?
I...
How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
...ue of something that has been drawn already. Maybe this wasn't part of the api when this question was asked.
given 2d context c.
function reduceAlpha(x, y, w, h, dA) {
var screenData = c.getImageData(x, y, w, h);
for(let i = 3; i < screenData.data.length; i+=4){
screenData.data[i] -...
What's the cleanest way of applying map() to a dictionary in Swift?
...y, value in (key.uppercased(), value.lowercased()) })
There are also new APIs for merging dictionaries together, substituting a default value for missing elements, grouping values (converting a collection into a dictionary of arrays, keyed by the result of mapping the collection over some function...
Parcelable where/when is describeContents() used?
...ate bitmask return value.
Description for CONTENTS_FILE_DESCRIPTOR in the API ref is:
Bit masks for use with describeContents(): each bit represents a kind of object considered to have potential special significance when marshalled.
Which really means: If you need to put FileDescriptor objec...
Swift compiler error: “non-modular header inside framework module”
...esignated for mixed swift, obj-c framework and its purpose is exposing the APIs to the outer world that your framework has in objective-c or c. That means the headers we put there should be in the public scope.
It should not be used as a place that exposes Objective-C/C headers that are not a part...
TypeError: 'NoneType' object is not iterable in Python
...s not None, but to let the exception occur. You want the consumers of your API to know when they've used it incorrectly. Accepting None as an empty sequence would let mistakes like mylist = mylist.extend(morestuff), manage to hide even longer; they think they extended a list (and they did, but then ...
Is there a way to create xxhdpi, xhdpi, hdpi, mdpi and ldpi drawables from a large scale image?
...t, you will also need an hdpi one, as neither xhdpi nor xxhdpi existed for API Level 7 and below. Now, whether you like the look of your downsampled drawables is another matter entirely...
– CommonsWare
Aug 31 '14 at 19:34
...
BCL (Base Class Library) vs FCL (Framework Class Library)
...ase Class Library (BCL) is the core set of classes that serve as the basic API of the Common Language Runtime. The classes in mscorlib.dll and some of the classes in System.dll and System.core.dll are considered to be a part of the BCL. It includes the classes in namespaces like System , System.Diag...
How can I download a specific Maven artifact in one command line?
...rces, a JAR file containing only Java sources, 3. javadoc, a JAR file with API docs only. See also: Maven Default Artifact Handlers.
– Danilo Piazzalunga
Nov 12 '19 at 20:48
...