大约有 46,000 项符合查询结果（耗时：0.0695秒） [XML]
Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
...or(Color.BLACK), or whatever color you want to clear your Canvas with.
And: how can I update just a part of the screen ?
There is no such method that just update a "part of the screen" since Android OS is redrawing every pixel when updating the screen. But, when you're not clearing old drawing...
Catch Ctrl-C in C
...
With a signal handler.
Here is a simple example flipping a bool used in main():
#include <signal.h>
static volatile int keepRunning = 1;
void intHandler(int dummy) {
keepRunning = 0;
}
// ...
int main(void) {
signal(SIG...
make div's height expand with its content
I have these nested divs and I need the main container to expand (in height) to accommodate the DIVs inside
25 Answers
...
Nested fragments disappear during transition animation
... A , which in turn uses getChildFragmentManager() to add fragments A1 and A2 in its onCreate like so:
16 Answers
...
UITapGestureRecognizer - single tap and double tap
...am trying to add 2 UITapGestureRecognizers to a view, one for single tap and one for double tap events. The single tap recognizer is working as expected (on its own). But I don't seem to be able to get the double tap recognizer working.
...
How to spawn a process and capture its STDOUT in .NET? [duplicate]
I need to spawn a child process that is a console application, and capture its output.
9 Answers
...
What is time_t ultimately a typedef to?
I searched my Linux box and saw this typedef:
10 Answers
10
...
How to create a loop in bash that is waiting for a webserver to respond?
...Apr 18 '14 at 15:43
Serge Stroobandt
17.2k88 gold badges7676 silver badges7676 bronze badges
answered Jan 17 '14 at 15:22
...
What is your preferred style for naming variables in R? [closed]
Which conventions for naming variables and functions do you favor in R code?
9 Answers
...
“where 1=1” statement [duplicate]
...
It's usually when folks build up SQL statements.
When you add and value = "Toyota" you don't have to worry about whether there is a condition before or just WHERE. The optimiser should ignore it
No magic, just practical
Example Code:
commandText = "select * from car_table where 1=1...