我正经历着绘图矩法在模型控制器显示后被调用。 是否以前可以调用绘图矩法, 这样就不会有任何延迟?
Best regards Sebastian Søndergaard
否, 绘制时会调用 < code> drawRect 方法。 如果您的绘图代码做得太多次, 您可以预算它, 并将其放入 CGLayerRef 中。 然后您的绘图矩方法可以将图层涂入上下文 。
您可以对背景线索进行计算( 粗略的), 然后将其发送回主线, 然后在视图上调用 SetNeeds Display, 如果您的主线是切碎的 。
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