傳遞圖像與textField到另一個viewController

Question

我有兩個視圖控制器類首先我有一個圖像視圖加上textView在imageView和第二個視圖控制器有一個imageView。第一個視圖控制器有一個完成按鈕，點擊完成按鈕我希望imageView與textField傳遞給secondViewController imageView。 有什麼辦法可以做到嗎？ 請給我建議。

Answer 1

- (UIImage *)renderImageFromView:(UIView *)view withRect:(CGRect)frame 
{ 
    // Create a new context the size of the frame 
    CGSize targetImageSize = CGSizeMake(frame.size.width,frame.size.height); 
    // Check for retina image rendering option 
    if (NULL != UIGraphicsBeginImageContextWithOptions) 
     UIGraphicsBeginImageContextWithOptions(targetImageSize, NO, 0); 
    else 
     UIGraphicsBeginImageContext(targetImageSize); 
    CGContextRef context2 = UIGraphicsGetCurrentContext(); 
    // The view to be rendered 
    [[view layer] renderInContext:context2]; 
    // Get the rendered image 
    UIImage *original_image = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 
    return original_image; 
} 

聲明

試試這個功能渲染圖像

及以下的一個合併它們

- (UIImage *)mergeImage:(UIImage *)img 

{ 
    CGSize offScreenSize = CGSizeMake(206, 432); 
    if (NULL != UIGraphicsBeginImageContextWithOptions) UIGraphicsBeginImageContextWithOptions(offScreenSize, NO, 0); 
    else UIGraphicsBeginImageContext(offScreenSize); 
    CGRect rect = CGRectMake(0, 0, 206, 432); 
    [imgView.image drawInRect:rect]; 
    [img drawInRect:rect]; 
    UIImage* imagez = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 
    return imagez; 
} 

您可以更改座標和高度，根據您的要求的寬度。

Answer 2

實施例：

該方法在ClassB.h

- (void) setProperties:(UIImage *)myImage MyLabel:(UILabel *)myLabel; 

這以上在ClassB.m

- (void) setProperties:(UIImage *)myImage MyLabel:(UILabel *)myLabel 
{ 
    //assign myImage and myLabel here 
} 

在ClassA的實現。然後

ClassB *classB = [[ClassB alloc] init]; 
[classB setProperties:myImage MyLabel:myLabel];