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Image Tinting Programmatically in Xcode

Friday, April 19th, 2013 at 8:14 am

// Construct new image the same size as the one passed.

UIImage *image;

UIGraphicsBeginImageContextWithOptions([self size], NO, 0.0); // 0.0 value for scale means "scale for device's main screen".

CGRect rect = CGRectZero;

rect.size = [self size]; // initializing a rect with the size of the original image.

// tint the image

[self drawInRect:rect];

[color set]; // setting the color to be filled as "color", which is a UIColor object to which we are going to tint the image.

UIRectFillUsingBlendMode(rect, kCGBlendModeColor); // Filling the created rect using the blend mode, kCGBlendModeColor

// restore alpha channel

[self drawInRect:rect blendMode:kCGBlendModeDestinationIn alpha:1.0f];

image = UIGraphicsGetImageFromCurrentImageContext(); // image will contain the final tinted image

UIGraphicsEndImageContext();

return image;

UIImage *image;

UIGraphicsBeginImageContextWithOptions([self size], NO, 0.0); // 0.0 value for scale means "scale for device's main screen".

CGRect rect = CGRectZero;

rect.size = [self size]; // initializing a rect with the size of the original image.

// tint the image

[self drawInRect:rect];

[color set]; // setting the color to be filled as "color", which is a UIColor object to which we are going to tint the image.

UIRectFillUsingBlendMode(rect, kCGBlendModeColor); // Filling the created rect using the blend mode, kCGBlendModeColor

// restore alpha channel

[self drawInRect:rect blendMode:kCGBlendModeDestinationIn alpha:1.0f];

image = UIGraphicsGetImageFromCurrentImageContext(); // image will contain the final tinted image

UIGraphicsEndImageContext();

return image;

Cropping Image Programmatically In Xcode

Friday, April 19th, 2013 at 8:08 am

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The following code will do the trick :

UIImage *image; // Creating the UIImage object

UIGraphicsBeginImageContextWithOptions(destnRect.size, NO, 0.0); // Here destnRect is the desired rectangle for the output image and 0.0 value for scale means "correct scale for device's screen".

CGImageRef sourceImage = CGImageCreateWithImageInRect([self CGImage], sourceRect); // Here sourceRect is the rectangle region for cropping and it happens here.

image = [UIImage imageWithCGImage:sourceImg scale:0.0 orientation:self.imageOrientation]; // creating cropped UIImage.

[image drawInRect:destRect]; // the actual scaling happens here, and orientation is taken care of automatically.

CGImageRelease(sourceImage);

image = UIGraphicsGetImageFromCurrentImageContext(); // Now "image" will contain the final cropped image

UIGraphicsEndImageContext();

UIImage *image; // Creating the UIImage object

UIGraphicsBeginImageContextWithOptions(destnRect.size, NO, 0.0); // Here destnRect is the desired rectangle for the output image and 0.0 value for scale means "correct scale for device's screen".

CGImageRef sourceImage = CGImageCreateWithImageInRect([self CGImage], sourceRect); // Here sourceRect is the rectangle region for cropping and it happens here.

image = [UIImage imageWithCGImage:sourceImg scale:0.0 orientation:self.imageOrientation]; // creating cropped UIImage.

[image drawInRect:destRect]; // the actual scaling happens here, and orientation is taken care of automatically.

CGImageRelease(sourceImage);

image = UIGraphicsGetImageFromCurrentImageContext(); // Now "image" will contain the final cropped image

UIGraphicsEndImageContext();

Android : script for accessing sqlite db from sdcard

Friday, April 19th, 2013 at 3:26 am

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The following code snippet will access the sdcard sqlite database:

File dbfile = new File("/sdcard/mysqlitedb.sqlite" ); 
SQLiteDatabase db = SQLiteDatabase.openOrCreateDatabase(dbfile, null);
System.out.println("DB Status:"  + db.isOpen());

File dbfile = new File("/sdcard/mysqlitedb.sqlite" );

SQLiteDatabase db = SQLiteDatabase.openOrCreateDatabase(dbfile, null);

System.out.println("DB Status:" + db.isOpen());

jQuery DatePicker : Auto prefilling to date with respect to from date change

Monday, April 15th, 2013 at 3:16 am

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You can create a jQuery script for adjusting to date according to from date and vice versa. The following code will create a data range textbox for the above purpose:

jQuery(document).ready(function() {
	
	jQuery( '#from_date' ).datepicker({ 	
		showOn: "both",
		buttonImage: "/js_scripts/images/calendar.gif",
		buttonImageOnly: true,
		dateFormat: 'dd-mm-yy', 
		minDate: -0,
		onClose: function( selectedDate, inst ) {
                          var maxDate = new Date(Date.parse(selectedDate));
                          maxDate.setDate(maxDate.getDate() - 1);            
                          jQuery( "#to_date" ).datepicker( "option", "minDate", selectedDate);
		},
		numberOfMonths: 2
	});
	jQuery( '#to_date' ).datepicker({
		showOn: "both",
		buttonImage: "/js_scripts/images/calendar.gif",
		buttonImageOnly: true,	
		dateFormat: 'dd-mm-yy', 
		minDate: -0,
		onClose:function(){},
		numberOfMonths: 2
	});
});

//html code for textbox

jQuery(document).ready(function() {

jQuery( '#from_date' ).datepicker({

showOn: "both",

buttonImage: "/js_scripts/images/calendar.gif",

buttonImageOnly: true,

dateFormat: 'dd-mm-yy',

minDate: -0,

onClose: function( selectedDate, inst ) {

var maxDate = new Date(Date.parse(selectedDate));

maxDate.setDate(maxDate.getDate() - 1);

jQuery( "#to_date" ).datepicker( "option", "minDate", selectedDate);

numberOfMonths: 2

});

jQuery( '#to_date' ).datepicker({

showOn: "both",

buttonImage: "/js_scripts/images/calendar.gif",

buttonImageOnly: true,

dateFormat: 'dd-mm-yy',

minDate: -0,

onClose:function(){},

numberOfMonths: 2

});

//html code for textbox

Creating array in string.xml in Android

Wednesday, April 10th, 2013 at 12:29 am

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You can create an array in String.xml file and use it in your app like following:

z&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;resources&gt;
    &lt;string-array name="country_array"&gt;
        &lt;item&gt;United States&lt;/item&gt;
        &lt;item&gt;China&lt;/item&gt;
        &lt;item&gt;Japan&lt;/item&gt;
        &lt;item&gt;United Kingdom&lt;/item&gt;
        &lt;item&gt;United Kingdom&lt;/item&gt;
   &lt;/string-array&gt; &lt;/resources&gt;

z<?xml version="1.0" encoding="utf-8"?>

<string-array name="country_array">

<item>United States</item>

<item>China</item>

<item>Japan</item>

<item>United Kingdom</item>

</string-array> </resources>

You can use it like following in main.java:

Resources res = getResources();
String[] countries = res.getStringArray(R.array.country_array);
System.out.println("#1." + countries[0]);

Resources res = getResources();

String[] countries = res.getStringArray(R.array.country_array);

System.out.println("#1." + countries[0]);

That’s it

jQuery script to disable right click on webpage

Wednesday, April 3rd, 2013 at 5:06 am

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The following code snippet will disable the right click on webpage to view source content or copy images:

jQuery(document).ready(function(){
   jQuery(document).bind("contextmenu",function(e){
      return false;
   });
});

jQuery(document).ready(function(){

jQuery(document).bind("contextmenu",function(e){

return false;

});

That’s it.

Restoring inapp purchases in ios

Tuesday, April 2nd, 2013 at 4:07 am

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-(IBAction)inAppRestoreButAxn:(id)sender
 {
    [[SKPaymentQueue defaultQueue] restoreCompletedTransactions];
 }

-(IBAction)inAppRestoreButAxn:(id)sender

{

[[SKPaymentQueue defaultQueue] restoreCompletedTransactions];

}

Adding delay between execution of two lines

Tuesday, April 2nd, 2013 at 4:05 am

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double delayInSeconds = 2.0;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
  NSLog(@"Do some work");
});

double delayInSeconds = 2.0;

dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));

dispatch_after(popTime, dispatch_get_main_queue(), ^(void){

NSLog(@"Do some work");

});

iPhone scroll UITableview by swiping another view

Tuesday, April 2nd, 2013 at 4:04 am

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UISwipeGestureRecognizer * swipegesture = [[UISwipeGestureRecognizer alloc]init];
swipegesture =[myTableview.gestureRecognizers objectAtIndex:1];
[myView addGestureRecognizer:swipegesture];//myView is the another view

UISwipeGestureRecognizer * swipegesture = [[UISwipeGestureRecognizer alloc]init];

swipegesture =[myTableview.gestureRecognizers objectAtIndex:1];

[myView addGestureRecognizer:swipegesture];//myView is the another view

Autoresize components horizontally in UIScrollView in ios

Tuesday, April 2nd, 2013 at 4:01 am

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//for the scrollview set the below property

[scrollview setAutoresizesSubviews:YES];
//then for every subview of the scrollview set the below property
[subview setAutoresizingMask:UIViewAutoresizingFlexibleWidth];

[scrollview setAutoresizesSubviews:YES];

//then for every subview of the scrollview set the below property

[subview setAutoresizingMask:UIViewAutoresizingFlexibleWidth];

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Image Tinting Programmatically in Xcode

Cropping Image Programmatically In Xcode

Android : script for accessing sqlite db from sdcard

jQuery DatePicker : Auto prefilling to date with respect to from date change

Creating array in string.xml in Android

jQuery script to disable right click on webpage

Restoring inapp purchases in ios

Adding delay between execution of two lines

iPhone scroll UITableview by swiping another view

Autoresize components horizontally in UIScrollView in ios

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