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How do I prevent Android taking a screenshot when my app goes to the background?
...I'm currently building has the requirement that the app has to prevent the OS to take a screenshot of the app when it's being pushed into the background for security reasons. This way it won't be able to see the last active screen when switching between apps.
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How do you make a HTTP request with C++?
... API) and check the contents to see if it contains a 1 or a 0. Is it also possible to download the contents into a string?
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urlencode vs rawurlencode?
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It will depend on your purpose. If interoperability with other systems is important then it seems rawurlencode is the way to go. The one exception is legacy systems which expect the query string to follow form-encoding style of spaces encoded as + inst...
How to jump to a particular line in a huge text file?
...is read in memory! So I would definitely rule this answer out for the purpose of quickly accessing a given line in a file.
– MiniQuark
Mar 6 '09 at 21:15
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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...
...- 特性UUID，通俗来讲它是硬件中某一功能的唯一身份ID
一个硬件UUID示例如下：UUID分为标准UUID和厂商自定义UUID标准UUID：由SIG发布，采用UUID基数 + 16位UUID的形式，如心率服务的UUID是0x180D，使用的UUID基数是：00000000-0000-1000-8000-0...
Sending POST data in Android
... params[0]; // URL to call
String data = params[1]; //data to post
OutputStream out = null;
try {
URL url = new URL(urlString);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
out = new B...
Generating a SHA-256 hash from the Linux command line
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NOTE: on OS X (BSD), it's echo -n foobar | shasum -a 256
– Olie
Oct 16 '14 at 15:26
6
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When should I release objects in -(void)viewDidUnload rather than in -dealloc?
...wanted to elaborate more about logic behind -viewDidUnload.
One of the most important reasons for implementing it is that UIViewController subclasses commonly also contain owning references to various subviews in the view hierarchy. These properties could have been set through IBOutlets when loa...
detect key press in python?
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For those who are on windows and were struggling to find an working answer here's mine: pynput
from pynput.keyboard import Key, Listener
def on_press(key):
print('{0} pressed'.format(
key))
def on_release(key):
p...
What is the difference between the kernel space and the user space?
...t mess with memory (and other resources) owned by other programs or by the OS kernel. This limits (but usually doesn't entirely eliminate) their ability to do bad things like crashing the machine.
The kernel is the core of the operating system. It normally has full access to all memory and machine ...