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How do I check for a network connection?
...T 2.0 using GetIsNetworkAvailable():
System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable()
To monitor changes in IP address or changes in network availability use the events from the NetworkChange class:
System.Net.NetworkInformation.NetworkChange.NetworkAvailabilityChanged
Syst...
How to prevent multiple instances of an Activity when it is launched with different Intents
... Market). It seems that launching it from the Play Store uses a different Intent than launching it from the phone's application menu of icons. This is leading to multiple copies of the same Activity being launched, which are conflicting with each other.
...
Dropping Unique constraint from MySQL table
How can I drop the "Unique Key Constraint" on a column of a MySQL table using phpMyAdmin?
10 Answers
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Is it unnecessary to put super() in constructor?
...
public class Base { }
public class Derived extends Base { public Derived(int i) { } }
Also fine.
public class Base { public Base(String s) { } }
public class Derived extends Base { }
The above is a compilation error as Base has no default constructor.
public class Base { private Base() { } }...
How do I create some kind of table of content in GitHub wiki?
...
Yes, I have been converted to asciidoc largely for the ToC and linking to headers. Got fed up of waiting for Markdown to catch up.
– Ciro Santilli 郝海东冠状病六四事件法轮功
Nov 9 '18 at 9:2...
Arduino101（Genuino 101）&App Inventor – RGB LED控制 - 创客硬件开...
...1秒鐘觸發一次 Clock.Timer事件，其中會使用 BluetoothLE.WriteIntValue 將 r g b 值的組合結果發送出去，例如 (128, 34, 255) 的組合結果就是 128034255，Arduino 收到之後再拆解即可。
Clock.Timer 事件的1秒鐘您可以自行修改為較小的數字，看看是...
How to construct a WebSocket URI relative to the page URI?
...ebSocket URI relative to the page URI at the browser side. Say, in my case convert HTTP URIs like
7 Answers
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How to reuse an ostringstream?
... The size is messing it up (i can see the first character is null but it prints much more). Is there a good way to fix the str length? i am using s.str().c_str(); ATM and it works nicely
– user34537
Jun 6 '11 at 16:09
...
Reducing the space between sections of the UITableView
...)tableView:(UITableView*)tableView
heightForHeaderInSection:(NSInteger)section {
if (section == 0) {
return 6.0;
}
return 1.0;
}
- (CGFloat)tableView:(UITableView*)tableView
heightForFooterInSection:(NSInteger)section {
return 5.0;
}
- (UIView*)tabl...
How to hide status bar in Android
...
if (Build.VERSION.SDK_INT < 16) {
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
} else {
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_...