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我正在用CAGradient圖層創建一個簡單的欄。我有6種顏色,我希望在圖層上均勻分佈。瞭解CAGradient位置?
NSMutableArray *colors = [NSArray arrayWithObjects:
(id)[[UIColor colorWithRed:0/255.0 green:102.0/255.0 blue:102.0/255.0 alpha:.95] CGColor],
(id)[[UIColor colorWithRed:204.0/255.0 green:153.0/255.0 blue:0/255.0 alpha:.95]CGColor],
(id)[ [UIColor colorWithRed:204.0/255.0 green:102.0/255.0 blue:51.0/255.0 alpha:.95]CGColor],
(id)[ [UIColor colorWithRed:204.0/255.0 green:51.0/255.0 blue:51.0/255.0 alpha:.95]CGColor],
(id)[ [UIColor blackColor]CGColor],nil];
NSMutableArray *locations = [NSArray arrayWithObjects:
[NSNumber numberWithFloat:0.0],
[NSNumber numberWithInt:0.14],
[NSNumber numberWithInt:0.28],
[NSNumber numberWithInt:0.42],
[NSNumber numberWithInt:0.56],
[NSNumber numberWithInt:0.70],
[NSNumber numberWithInt:0.84],
[NSNumber numberWithInt:1.0],nil];
,並實現它們:
gradientLayer_.colors =colors;
gradientLayer_.locations=locations;
但我得到一個完全的黑條。當我刪除的位置,我看到的梯度完美,但它沒有很好地劃分。
我覺得我不太瞭解位置。
有幫助嗎?
謝謝。你知道我發現在90%的情況下,它總是一個非常簡單的解決方案。 – shannoga 2011-03-24 15:43:37