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“From View Controller” disappears using UIViewControllerContextTransitioning
...'ve filed a radar.
I used Reveal to inspect the view hierarchy after the screen goes black. The key UIWindow is completely empty – no view hierarchy at all!
I played around a bit and it looks like there is an easy workaround, for simple cases. You can just re-add the toViewController's view a...
How to print out all the elements of a List in Java?
...t must have toString implemented for them to print something meaningful to screen.
Here's a quick test to see the differences:
public class Test {
public class T1 {
public Integer x;
}
public class T2 {
public Integer x;
@Override
public String toStri...
Hide separator line on one UITableViewCell
...iteMagnitude)
}
or :
cell.separatorInset = UIEdgeInsetsMake(0, 0, 0, UIScreen.main.bounds.width)
for default Margin:
cell.separatorInset = UIEdgeInsetsMake(0, tCell.layoutMargins.left, 0, 0)
to show separator end-to-end
cell.separatorInset = .zero
Objective-C:
if (indexPath.row == {yo...
How to know when UITableView did scroll to bottom in iPhone
...
The best way is to test a point at the bottom of the screen and use this method call when ever the user scrolls (scrollViewDidScroll):
- (NSIndexPath *)indexPathForRowAtPoint:(CGPoint)point
Test a point near the bottom of the screen, and then using the indexPath it returns c...
using href links inside tag
... viewing a page with a non-traditional browser (a non graphical browser or screen reader or the page is accessed programmatically, or JavaScript is disabled) what then is the "meaning" or the "intent" of this <select> you have used for navigation? It is saying "please pick a page name" and not...
Android: How can I get the current foreground activity (from a service)?
...dcastReceiver as backup (to raise a Notification if the activity is not on-screen) -- here is a blog post with more on this pattern
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OS X Bash, 'watch' command
... do clear; your_command; sleep 2; done
That will loop forever, clear the screen, run your command, and wait two seconds - the basic watch your_command implementation.
You can take this a step further and create a watch.sh script that can accept your_command and sleep_duration as parameters:
#!/b...
iOS 7 parallax effect in my view controller
I'm developing an app for iOS 7 in Objective-C. I've got a screen in my app with a few buttons and a pretty background image. (It's a simple xib with UIButtons on top of a UIImageView .)
...
WakeLock 扩展：保持设备唤醒扩展，防止系统休眠和电池优化 · App Inventor 2 中文网
...许屏幕关闭。
返回类型：无返回值
AquireScreenBrightWakeLock 获取屏幕明亮唤醒锁()
获取屏幕明亮唤醒锁，保持屏幕亮着且亮度不变。
返回类型：无返回值
AquireScreenDimWakeLock 获取屏幕昏暗唤醒锁()
...
【转】用App Inventor 2实现电子围栏功能 - App应用开发 - 清泛IT社区，为创新赋能！
...的百分比Specifies the Map’s vertical height as a percentage of the Screen’s Height.Latitude地图中心点的纬度Gets the latitude of the center of the Map. To change the latitude, use the PanTo method.获取地图中心点的纬度。可以使用Pan平移方法来改变纬度。LocationSe...