Jak programowo zrobić zrzut ekranu
Chcę zrzut ekranu obrazu na ekranie zapisanego do biblioteki zapisanych zdjęć
18 answers
Rozważając sprawdzenie wyświetlacza siatkówki użyj poniższego fragmentu kodu:
#import <QuartzCore/QuartzCore.h>
if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
UIGraphicsBeginImageContextWithOptions(self.window.bounds.size, NO, [UIScreen mainScreen].scale);
} else {
UIGraphicsBeginImageContext(self.window.bounds.size);
}
[self.window.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *imageData = UIImagePNGRepresentation(image);
if (imageData) {
[imageData writeToFile:@"screenshot.png" atomically:YES];
} else {
NSLog(@"error while taking screenshot");
}
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2016-09-01 19:00:13
Poniżej metoda działa również dla obiektów OPENGL
//iOS7 or above
- (UIImage *) screenshot {
CGSize size = CGSizeMake(your_width, your_height);
UIGraphicsBeginImageContextWithOptions(size, NO, [UIScreen mainScreen].scale);
CGRect rec = CGRectMake(0, 0, your_width, your_height);
[_viewController.view drawViewHierarchyInRect:rec afterScreenUpdates:YES];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
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2017-06-13 08:54:53
UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, self.view.opaque, 0.0);
[self.myView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *imageData = UIImageJPEGRepresentation(image, 1.0 ); //you can use PNG too
[imageData writeToFile:@"image1.jpeg" atomically:YES];
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2015-10-15 06:58:28
- (UIImage*) getGLScreenshot {
NSInteger myDataLength = 320 * 480 * 4;
// allocate array and read pixels into it.
GLubyte *buffer = (GLubyte *) malloc(myDataLength);
glReadPixels(0, 0, 320, 480, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
// gl renders "upside down" so swap top to bottom into new array.
// there's gotta be a better way, but this works.
GLubyte *buffer2 = (GLubyte *) malloc(myDataLength);
for(int y = 0; y <480; y++)
{
for(int x = 0; x <320 * 4; x++)
{
buffer2[(479 - y) * 320 * 4 + x] = buffer[y * 4 * 320 + x];
}
}
// make data provider with data.
CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, buffer2, myDataLength, NULL);
// prep the ingredients
int bitsPerComponent = 8;
int bitsPerPixel = 32;
int bytesPerRow = 4 * 320;
CGColorSpaceRef colorSpaceRef = CGColorSpaceCreateDeviceRGB();
CGBitmapInfo bitmapInfo = kCGBitmapByteOrderDefault;
CGColorRenderingIntent renderingIntent = kCGRenderingIntentDefault;
// make the cgimage
CGImageRef imageRef = CGImageCreate(320, 480, bitsPerComponent, bitsPerPixel, bytesPerRow, colorSpaceRef, bitmapInfo, provider, NULL, NO, renderingIntent);
// then make the uiimage from that
UIImage *myImage = [UIImage imageWithCGImage:imageRef];
return myImage;
}
- (void)saveGLScreenshotToPhotosAlbum {
UIImageWriteToSavedPhotosAlbum([self getGLScreenshot], nil, nil, nil);
}
Źródło .
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2010-02-04 15:20:32
Zobacz Ten post wygląda na to, że możesz użyć UIGetScreenImage () na razie.
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2012-06-11 09:03:11
IN SWIFT
func captureScreen() -> UIImage
{
UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, false, 0);
self.view.drawViewHierarchyInRect(view.bounds, afterScreenUpdates: true)
let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image
}
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2016-05-23 09:43:03
Spowoduje to zapisanie zrzutu ekranu, a także zwróci zrzut ekranu.
-(UIImage *)capture{
UIGraphicsBeginImageContext(self.view.bounds.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *imageView = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageWriteToSavedPhotosAlbum(imageView, nil, nil, nil); //if you need to save
return imageView;
}
Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2014-08-13 05:56:30
Myślę, że poniższy fragment pomoże, jeśli chcesz zrobić Pełny ekran ( z wyjątkiem paska stanu ), po prostu zamień AppDelegate na nazwę delegata aplikacji, jeśli to konieczne.
- (UIImage *)captureFullScreen {
AppDelegate *_appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
// for retina-display
UIGraphicsBeginImageContextWithOptions(_appDelegate.window.bounds.size, NO, [UIScreen mainScreen].scale);
[_appDelegate.window drawViewHierarchyInRect:_appDelegate.window.bounds afterScreenUpdates:NO];
} else {
// non-retina-display
UIGraphicsBeginImageContext(_bodyView.bounds.size);
[_appDelegate.window drawViewHierarchyInRect:_appDelegate.window.bounds afterScreenUpdates:NO];
}
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
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2014-10-09 10:33:05
Od iOS10, to staje się nieco prostsze. UIKit jest dostarczany z UIGraphicsImageRender
, który pozwala na
... wykonywanie zadań rysowania bez konieczności obsługi konfiguracji, takich jak głębia kolorów i Skala obrazu, lub zarządzania podstawowymi kontekstami graficznymi]}
Apple Docs-UIGraphicsImageRenderer
Więc możesz teraz zrobić coś takiego:
let renderer = UIGraphicsImageRenderer(size: someView.bounds.size)
let image = renderer.image(actions: { context in
someView.drawHierarchy(in: someView.bounds, afterScreenUpdates: true)
})
Wiele odpowiedzi tutaj działało dla mnie w większości przypadków. Ale kiedy próbowałem zrobić zdjęcie ARSCNView
, byłem w stanie tylko aby to zrobić za pomocą metody opisanej powyżej. Mimo, że warto zauważyć, że w tej chwili ARKit jest nadal w wersji beta, a Xcode jest w wersji beta 4
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2017-07-27 21:07:33
Nie mogłem znaleźć odpowiedzi z implementacją Swift 3. Więc zaczyna się.
static func screenshotOf(window: UIWindow) -> UIImage? {
UIGraphicsBeginImageContextWithOptions(window.bounds.size, true, UIScreen.main.scale)
guard let currentContext = UIGraphicsGetCurrentContext() else {
return nil
}
window.layer.render(in: currentContext)
guard let image = UIGraphicsGetImageFromCurrentImageContext() else {
UIGraphicsEndImageContext()
return nil
}
UIGraphicsEndImageContext()
return image
}
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2016-12-06 09:32:02
Pobierz Zrzut Ekranu Z Widoku
-(UIImage *)getScreenshotImage {
if ([[UIScreen mainScreen] scale] == 2.0) {
UIGraphicsBeginImageContextWithOptions(self.view.frame.size, FALSE, 2.0);
} else {
UIGraphicsBeginImageContextWithOptions(self.view.frame.size, FALSE, 1.0);
}
[self.view.window.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage * result = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return result;
}
Zapisz obraz do zdjęć
UIImageWriteToSavedPhotosAlbum(YOUR_IMAGE, nil, nil, nil);
How-To
UIImageWriteToSavedPhotosAlbum([self getScreenshotImage], nil, nil, nil);
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2015-02-10 01:25:11
Dla systemu iOS 7.0 lub nowszego..
Jeśli chcesz zrobić zrzuty ekranu view say( myView), możesz to zrobić za pomocą jednej linii:
[myView snapshotViewAfterScreenUpdates:NO];
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2016-03-04 05:52:43
Inną opcją jest użycie Narzędzia automatyzacji na instrumentach. Piszesz skrypt, aby umieścić ekran w co chcesz, a następnie zrobić zdjęcia. Oto skrypt, którego użyłem do jednej z moich aplikacji. Oczywiście szczegóły skryptu będą różne dla Twojej aplikacji.
var target = UIATarget.localTarget();
var app = target.frontMostApp();
var window = app.mainWindow();
var picker = window.pickers()[0];
var wheel = picker.wheels()[2];
var buttons = window.buttons();
var button1 = buttons.firstWithPredicate("name == 'dateButton1'");
var button2 = buttons.firstWithPredicate("name == 'dateButton2'");
function setYear(picker, year) {
var yearName = year.toString();
var yearWheel = picker.wheels()[2];
yearWheel.selectValue(yearName);
}
function setMonth(picker, monthName) {
var wheel = picker.wheels()[0];
wheel.selectValue(monthName);
}
function setDay(picker, day) {
var wheel = picker.wheels()[1];
var name = day.toString();
wheel.selectValue(name);
}
target.delay(1);
setYear(picker, 2015);
setMonth(picker, "July");
setDay(picker, 4);
button1.tap();
setYear(picker, 2015);
setMonth(picker, "December");
setDay(picker, 25);
target.captureScreenWithName("daysShot1");
var nButtons = buttons.length;
UIALogger.logMessage(nButtons + " buttons");
for (var i=0; i<nButtons; i++) {
UIALogger.logMessage("button " + buttons[i].name());
}
var tabBar = window.tabBars()[0];
var barButtons = tabBar.buttons();
var nBarButtons = barButtons.length;
UIALogger.logMessage(nBarButtons + " buttons on tab bar");
for (var i=0; i<nBarButtons; i++) {
UIALogger.logMessage("button " + barButtons[i].name());
}
var weeksButton = barButtons[1];
var monthsButton = barButtons[2];
var yearsButton = barButtons[3];
target.delay(2);
weeksButton.tap();
target.captureScreenWithName("daysShot2");
target.delay(2);
monthsButton.tap();
target.captureScreenWithName("daysShot3");
target.delay(2);
yearsButton.tap();
target.delay(2);
button2.tap();
target.delay(2);
setYear(picker, 2018);
target.delay(2);
target.captureScreenWithName("daysShot4");
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2014-12-21 19:54:54
Dwie opcje dostępne na stronie poniżej:
Opcja 1: używanie UIWindow (wypróbowane i działa idealnie)
// create graphics context with screen size
CGRect screenRect = [[UIScreen mainScreen] bounds];
UIGraphicsBeginImageContext(screenRect.size);
CGContextRef ctx = UIGraphicsGetCurrentContext();
[[UIColor blackColor] set];
CGContextFillRect(ctx, screenRect);
// grab reference to our window
UIWindow *window = [UIApplication sharedApplication].keyWindow;
// transfer content into our context
[window.layer renderInContext:ctx];
UIImage *screengrab = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
Opcja 2: użycie UIView
// grab reference to the view you'd like to capture
UIView *wholeScreen = self.splitViewController.view;
// define the size and grab a UIImage from it
UIGraphicsBeginImageContextWithOptions(wholeScreen.bounds.size, wholeScreen.opaque, 0.0);
[wholeScreen.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *screengrab = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
Do ekranu siatkówki (jako odpowiedź DenNukem)
// grab reference to our window
UIWindow *window = [UIApplication sharedApplication].keyWindow;
// create graphics context with screen size
CGRect screenRect = [[UIScreen mainScreen] bounds];
if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
UIGraphicsBeginImageContextWithOptions(screenRect.size, NO, [UIScreen mainScreen].scale);
} else {
UIGraphicsBeginImageContext(screenRect.size);
[window.layer renderInContext:UIGraphicsGetCurrentContext()];
}
Aby uzyskać więcej szczegółów: http://pinkstone.co.uk/how-to-take-a-screeshot-in-ios-programmatically/
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2015-05-23 08:44:30
Mały wkład, zrobiłem to za pomocą przycisku, ale naciśnięcie oznacza również, że przycisk jest wciśnięty. Więc najpierw odhaczam światło.
- (IBAction)screenShot:(id)sender {
// Unpress screen shot button
screenShotButton.highlighted = NO;
// create graphics context with screen size
CGRect screenRect = [[UIScreen mainScreen] bounds];
if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, NO, [UIScreen mainScreen].scale);
} else {
UIGraphicsBeginImageContext(self.view.bounds.size);
}
CGContextRef ctx = UIGraphicsGetCurrentContext();
[[UIColor blackColor] set];
CGContextFillRect(ctx, screenRect);
// grab reference to our window
UIWindow *window = [UIApplication sharedApplication].keyWindow;
// transfer content into our context
[window.layer renderInContext:ctx];
UIImage *screengrab = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
// save screengrab to Camera Roll
UIImageWriteToSavedPhotosAlbum(screengrab, nil, nil, nil);
}
Dostałem główną część kodu z: http://pinkstone.co.uk/how-to-take-a-screeshot-in-ios-programmatically/ gdzie użyłem opcji 1, Opcja 2 nie wydaje się działać dla mnie. Dodano korekty dla rozmiaru ekranu Rentina z tego wątku, i unhighlighting screenshotton. Widok, na którym go używam, to Storyboardowy ekran przycisków i etykiet oraz z kilkoma UIView dodanymi później za pośrednictwem programu.
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2016-03-02 14:09:27
W języku Swift możesz użyć następującego kodu.
if UIScreen.mainScreen().respondsToSelector(Selector("scale")) {
UIGraphicsBeginImageContextWithOptions(self.window!.bounds.size, false, UIScreen.mainScreen().scale)
}
else{
UIGraphicsBeginImageContext(self.window!.bounds.size)
}
self.window?.layer.renderInContext(UIGraphicsGetCurrentContext())
var image : UIImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)
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2017-06-13 08:39:43
Pobierz Zrzut Ekranu Z Widoku:
- (UIImage *)takeSnapshotView {
CGRect rect = [myView bounds];//Here you can change your view with myView
UIGraphicsBeginImageContextWithOptions(rect.size,YES,0.0f);
CGContextRef context = UIGraphicsGetCurrentContext();
[myView.layer renderInContext:context];
UIImage *capturedScreen = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return capturedScreen;//capturedScreen is the image of your view
}
Hope, tego właśnie szukasz. / Align = "left" / :)Warning: date(): Invalid date.timezone value 'Europe/Kyiv', we selected the timezone 'UTC' for now. in /var/www/agent_stack/data/www/doraprojects.net/template/agent.layouts/content.php on line 54
2017-06-13 09:47:01
Swift 4:
func makeImage(withView view: UIView) -> UIImage? {
let rect = view.bounds
UIGraphicsBeginImageContextWithOptions(rect.size, true, 0)
guard let context = UIGraphicsGetCurrentContext() else {
assertionFailure()
return nil
}
view.layer.render(in: context)
guard let image = UIGraphicsGetImageFromCurrentImageContext() else {
assertionFailure()
return nil
}
UIGraphicsEndImageContext()
return image
}
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2017-09-20 23:41:07