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iPhone App Development Tutorial
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HIREVIETNAMESE
iPhone TrainingLesson 3
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Contents
Drawing1
Touch and input2
Example 34
Exercise 35
2
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Drawing
Quartz 2D Quartz 2D is a two dimensional graphics drawing engine that
makes up the bulk of the UIKit Core Graphics Framework. It is a C based application programming interface (API) and as
such is utilized primarily through calls to a range of C functions. Quartz 2D drawing typically takes place on a UIView object.
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Drawing
Drawing a line
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Drawing
Drawing a line
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Drawing
Drawing paths
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Drawing
Drawing paths
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Drawing
Drawing Rectangle
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Drawing
Drawing Rectangle
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Drawing
Filling a path with a color
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Drawing
Filling a path with a color
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Drawing
Drawing an image into Graphic Context
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Drawing
Filling a path with a color
13
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Touch and input
Events touchesBegan:withEvent: touchesEnded:withEvent: touchesMoved:withEvent:
Get all touches on the screen NSSet *allTouches = [event allTouches];
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Example 3
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Exercise 3
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