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Is AsyncTask really conceptually flawed or am I just missing something?
... urls) {
int count = urls.length;
long totalSize = 0;
for (int i = 0; i < count; i++) {
totalSize += Downloader.downloadFile(urls[i]);
publishProgress((int) ((i / (float) count) * 100));
}
return totalSize...
HTML Form: Select-Option vs Datalist-Option
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james.garrissjames.garriss
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...
MLKitCodeScanner 拓展：离线条码 / 二维码识别 · App Inventor 2 中文网
...（或水平布局），把它的宽度设为「充满」、高度设为 300 像素 —— 这就是预览画面的位置。
选中 MLKitCodeScanner，把 预览容器（PreviewContainer） 属性选成刚才那个布局。
代码块里直接调 开始扫描：
when 按钮_开始.Click() {
C...
Capture Image from Camera and Display in Activity
...eView imageView;
private static final int MY_CAMERA_PERMISSION_CODE = 100;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.imageView = (ImageView)this.findViewById(R.id.imageV...
How to get IntPtr from byte[] in C#
...unmanagedPointer = Marshal.AllocHGlobal(bytes.Length);
Marshal.Copy(bytes, 0, unmanagedPointer, bytes.Length);
// Call unmanaged code
Marshal.FreeHGlobal(unmanagedPointer);
Alternatively you could declare a struct with one property and then use Marshal.PtrToStructure, but that would still require ...
jQuery SVG, why can't I addClass?
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Edit 2016: read the next two answers.
JQuery 3 fixes the underlying issue
Vanilla JS: element.classList.add('newclass') works in modern browsers
JQuery (less than 3) can't add a class to an SVG.
.attr() works with SVG, so if...
Is there a way to automate the android sdk installation?
...d packages.
<package> is a sdk-style path (e.g. "build-tools;23.0.0" or
"platforms;android-23").
<package-file> is a text file where each line is a sdk-style path
of a package to install or uninstall.
Multiple --package_file arguments may be s...
How can I change the language (to english) in Oracle SQL Developer?
...n-english Windows 7 system, and apparently Oracle SQL Developer (version 3.0.04.34, 64-bit) tries to auto-guess my preferred language based on the OS. Is there any way to change the language to english?
...
How to test if string exists in file with Bash?
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grep -Fxq "$FILENAME" my_list.txt
The exit status is 0 (true) if the name was found, 1 (false) if not, so:
if grep -Fxq "$FILENAME" my_list.txt
then
# code if found
else
# code if not found
fi
Explanation
Here are the relevant sections of the man page for grep:
grep [...
How to display a confirmation dialog when clicking an link?
...
620
Inline event handler
In the most simple way, you can use the confirm() function in an inline on...