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[英]How do I get an image from the iOS photo library and display it in UIWebView
[英]How to get the image from uiwebview in ios
在這里我加載了內容以及webview中的圖像,我想從webview中獲取圖像並將其加載到imageview中。
接收圖像的URL但圖像未加載到imageview中
在這里我使用代碼從webview獲取圖像是
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
//Touch gestures below top bar should not make the page turn.
//EDITED Check for only Tap here instead.
if ([gestureRecognizer isKindOfClass:[UITapGestureRecognizer class]]) {
CGPoint touchPoint = [touch locationInView:self.view];
NSUserDefaults * userDefaults = [NSUserDefaults standardUserDefaults];
bool pageFlag = [userDefaults boolForKey:@"pageDirectionRTLFlag"];
NSLog(@"pageFlag tapbtnRight %d", pageFlag);
if(self.interfaceOrientation==UIInterfaceOrientationPortrait||self.interfaceOrientation==UIInterfaceOrientationPortraitUpsideDown) {
NSString *imgURL = [NSString stringWithFormat:@"document.elementFromPoint(%f, %f).src", touchPoint.x, touchPoint.y];
NSString *urlToSave = [webView stringByEvaluatingJavaScriptFromString:imgURL];
NSLog(@"urlToSave :%@",urlToSave);
}
}
看一下這個。
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
NSLog(@"TAPPED");
//Touch gestures below top bar should not make the page turn.
//EDITED Check for only Tap here instead.
if ([gestureRecognizer isKindOfClass:[UITapGestureRecognizer class]]) {
CGPoint touchPoint = [touch locationInView:self.view];
NSUserDefaults * userDefaults = [NSUserDefaults standardUserDefaults];
bool pageFlag = [userDefaults boolForKey:@"pageDirectionRTLFlag"];
NSLog(@"pageFlag tapbtnRight %d", pageFlag);
if(self.interfaceOrientation==UIInterfaceOrientationPortrait||self.interfaceOrientation==UIInterfaceOrientationPortraitUpsideDown) {
NSString *imgURL = [NSString stringWithFormat:@"document.elementFromPoint(%f, %f).src", touchPoint.x, touchPoint.y];
NSString *urlToSave = [webV stringByEvaluatingJavaScriptFromString:imgURL];
NSLog(@"urlToSave :%@",urlToSave);
NSURL * imageURL = [NSURL URLWithString:urlToSave];
NSData * imageData = [NSData dataWithContentsOfURL:imageURL];
UIImage * image = [UIImage imageWithData:imageData];
imgView.image = image;//imgView is the reference of UIImageView
}
}
return YES;
}
示例代碼: http : //dl.dropbox.com/u/51367042/ImageFromWebView.zip
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