darwind’s gists

darwind / Android-ShowAppVersion

Last active August 29, 2015 13:56

Android: fetching the app version.

	private void setAppVersion(TextView textView) {
	try {
	textView.setText("Version: " + getContext().getPackageManager().getPackageInfo(getContext().getPackageName(), 0).versionName);
	} catch (NameNotFoundException e) {
	// Nothing to see here - move along. We just eat this exception, because we can't use it for anything...
	}
	}

darwind / gist:9209467

Created February 25, 2014 14:09

Android: Creating lines in XML views.

	Horizontal line

	<View
	android:layout_width="1dip"
	android:layout_height="fill_parent"
	android:background="#FF0000FF" />

	Vertical line

	<View

darwind / gist:9209558

Created February 25, 2014 14:15

Android: Making round images like Google+ profile pictures

	public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);

	// Getting the ImageView containing the picture to make round.
	ImageView profilePic = (ImageView) findViewById(R.id.myImageView);

darwind / gist:9217637

Created February 25, 2014 21:00

iOS check system version. Sometimes needed if you're using methods only available in some versions of iOS.

	/*
	* System Versioning Preprocessor Macros
	*/

	#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
	#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
	#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
	#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
	#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)

darwind / listselectors

Created April 2, 2014 19:41

Android: Semi-transparent selector for ListViews

	Goes in the drawable-folder

	list_selector.xml:

	<selector xmlns:android="http://schemas.android.com/apk/res/android">

	<item android:drawable="@color/transparent" android:state_pressed="false" android:state_selected="false"/>
	<item android:drawable="@color/semi_transparent" android:state_pressed="true"/>
	<item android:drawable="@color/semi_transparent" android:state_pressed="false" android:state_selected="true"/>

darwind / remove_dividers

Created April 2, 2014 22:56

Android: remove dividers between ListView items

	In code:

	getListView().setDivider(null);
	getListView().setDividerHeight(0);

	In XML:

	android:divider="@null"
	android:dividerHeight="0dp"

darwind / noselectors

Created April 3, 2014 11:36

Android: no selectors in ListView

	In XML add this to the ListView:

	android:listSelector="@android:color/transparent"

	In code add this to the ListView:

	myListView.setSelector(android.R.color.transparent);

darwind / Screenwidth

Created May 5, 2014 14:27

Get screenwidth

	private int getScreenWidth(Context context) {
	WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
	Display display = wm.getDefaultDisplay();
	DisplayMetrics metrics = new DisplayMetrics();
	display.getMetrics(metrics);
	int width = metrics.widthPixels;

	return width;
	}

darwind / onkeypressup-javascript.html

Last active August 29, 2015 14:01

Pure JavaScript: onKeyPressUp change element on page.

	<!DOCTYPE html>
	<html>
	<head>
	<script>
	function myFunction(e) {
	if(e.keyCode == 97 \|\| e.keyCode == 65) {
	document.getElementById("textChange").innerHTML = "A or a was pressed!";
	} else if (e.keyCode == 66 \|\| e.keyCode == 98) {
	document.getElementById("textChange").innerHTML = "B or b was pressed!";
	} else {

darwind / passing_data_ios

Created June 15, 2014 17:58

Passing data between ViewControllers in Objective-C

	- (void) prepareForSegue:(UIStoryboardSegue *) segue sender:(id)sender
	{
	NextViewController controller = (NextViewController )segue.destinationViewController;
	if([segue.identifier isEqualToString:@"mySegueIdentifier"]) {
	controller.parameter = @"My value to pass to the next controller!";
	} else {
	// Else do something else.
	}
	}

Kasper Rugård Thomsen darwind