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Implemented simple custom activity indicator.
- Supports loading from device or remotely (synchronously). - Supports resizing. - Fixed memory leak.
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project_files/Plugins/wizSpinnerPlugin/WizActivitySpinnerView.h
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,16 @@ | ||
| // | ||
| // WizActivitySpinnerView.h | ||
| // practical_test_01 | ||
| // | ||
| // Created by Chris Wynn on 7/22/12. | ||
| // Copyright (c) 2012 __MyCompanyName__. All rights reserved. | ||
| // | ||
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| #import <UIKit/UIKit.h> | ||
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| @interface WizActivitySpinnerView : UIImageView | ||
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| - (id)initWithImageURL:(NSURL *)url; | ||
| - (void)setSize:(CGSize)size; | ||
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| @end |
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project_files/Plugins/wizSpinnerPlugin/WizActivitySpinnerView.m
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| // | ||
| // WizActivitySpinnerView.m | ||
| // practical_test_01 | ||
| // | ||
| // Created by Chris Wynn on 7/22/12. | ||
| // Copyright (c) 2012 __MyCompanyName__. All rights reserved. | ||
| // | ||
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| #import "WizActivitySpinnerView.h" | ||
| #import <ImageIO/ImageIO.h> | ||
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| @implementation WizActivitySpinnerView | ||
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| - (id)initWithImageURL:(NSURL *)url | ||
| { | ||
| // For remote URLs, the read of data below will make app unresponsive. | ||
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| // TODO: Consider changing to asynchronous or background loading of URL data | ||
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| // Read data from the URL | ||
| NSData *data = [NSData dataWithContentsOfURL:url]; | ||
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| // Split data into individual frames using ImageIO (iOS4.0 and above). | ||
| NSMutableArray *frames = nil; | ||
| CGImageSourceRef imgSource = CGImageSourceCreateWithData((CFDataRef)data, NULL); | ||
| if ( imgSource ) { | ||
| size_t count = CGImageSourceGetCount(imgSource); | ||
| frames = [NSMutableArray arrayWithCapacity:count]; | ||
| for ( size_t i = 0; i < count; i++ ) { | ||
| CGImageRef img = CGImageSourceCreateImageAtIndex(imgSource, i, NULL); | ||
| if ( img ) { | ||
| [frames addObject:[UIImage imageWithCGImage:img]]; | ||
| CGImageRelease(img); | ||
| } | ||
| } | ||
| CFRelease(imgSource); | ||
| } | ||
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| // Initialize with the frame data. Note that if frames is nil, | ||
| // both the image and animationImages will be initialized to nil. | ||
| self = [super initWithImage:[frames objectAtIndex:0]]; | ||
| if (self) { | ||
| self.animationImages = frames; | ||
| } | ||
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| return self; | ||
| } | ||
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| - (void)setSize:(CGSize)size | ||
| { | ||
| CGRect myBounds = self.bounds; | ||
| myBounds.size = size; | ||
| self.bounds = myBounds; | ||
| } | ||
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| @end |
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