zoukankan      html  css  js  c++  java
  • UIView设置背景渐变色

    UIView设置背景渐变色
    // Allocate bitmap context
    
    CGContextRef bitmapContext = CGBitmapContextCreate(NULL, 320, 480, 8, 4 * 320, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaNoneSkipFirst);
    
    // Draw Gradient Here
    CGContextDrawLinearGradient(bitmapContext, myGradient, CGPointMake(0.0f, 0.0f), CGPointMake(320.0f, 480.0f), );
    // Create a CGImage from context
    CGImageRef cgImage = CGBitmapContextCreateImage(bitmapContext);
    // Create a UIImage from CGImage
    UIImage *uiImage = [UIImage imageWithCGImage:cgImage];
    // Release the CGImage
    CGImageRelease(cgImage);
    // Release the bitmap context
    CGContextRelease(bitmapContext);
    // Create the patterned UIColor and set as background color
    [targetView setBackgroundColor:[UIColor colorWithPatternImage:image]];
  • 相关阅读:
    http
    node 学习 http
    socket.io
    每日日报
    每日日报
    每日日报
    06人件读书笔记之一
    每日日报
    每日日报
    05程序员修炼之道:从小工到专家阅读笔记之三
  • 原文地址:https://www.cnblogs.com/ligun123/p/3224537.html
Copyright © 2011-2022 走看看