IOS：关于iPhone/iPad全屏截图与区域截图的几种方法总结

截取本区域(self.view):

UIGraphicsBeginImageContext(CGSizeMake(self.view.frame.size.width,self.view.frame.size.height));

[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];

UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);

全屏截图:

UIWindow *screenWindow = [[UIApplication sharedApplication] keyWindow];

UIGraphicsBeginImageContext(screenWindow.frame.size);

[screenWindow.layer renderInContext:UIGraphicsGetCurrentContext()];

UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);

以上2种方法真机和模拟器都可以运行.在photo.app里可以看到照片

苹果最新开放的接口函数(全屏截图),已经有人试过了,不会reject:

CGImageRef UIGetScreenImage();

CGImageRef img = UIGetScreenImage();

UIImage* scImage=[UIImage imageWithCGImage:img];

UIImageWriteToSavedPhotosAlbum(scImage, nil, nil, nil);

It still works,but only on-device (not in simulator) .

截图另存为指定名字:

UIWindow *screenWindow = [[UIApplication sharedApplication] keyWindow];

UIGraphicsBeginImageContext(screenWindow.frame.size);

[screenWindow.layer renderInContext:UIGraphicsGetCurrentContext()];

UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

NSData *screenshotPNG = UIImagePNGRepresentation(screenshot);

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];

NSError *error = nil;

[screenshotPNG writeToFile:[documentsDirectorystringByAppendingPathComponent:@"screenshot.png"] options:NSAtomicWriteerror:&error];

部分代码来自:http://stackoverflow.com/questions/692464/emailing-full-screen-of-iphone-app

没有ipad真机截图发布app的可以用此方法做个透明按钮点,哈哈.

//播放截图声音

NSString* path = [[NSBundle mainBundle]

pathForResource:@”photoShutter” ofType:@”caf”];

//NSString *path = [[NSBundle

bundleWithIdentifier:@"com.apple.UIKit"] pathForResource:@”Tink”

ofType:@”aiff”];

SystemSoundID soundID;

AudioServicesCreateSystemSoundID((CFURLRef)[NSURL

fileURLWithPath:path], &soundID);

AudioServicesPlaySystemSound(soundID);

// we don’t dispose of the sound to keep the sound in the cache for

the next time

AudioServicesDisposeSystemSoundID(soundID);

可以用这顺带播放一下声音