- (void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(rightButtonTapped:)];
self.navigationItem.rightBarButtonItem = rightButton;
WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
_webView = [[WKWebView alloc] initWithFrame:self.view.bounds configuration:configuration];
_webView.navigationDelegate = self;
[self.view addSubview:_webView];
NSURL *url = [NSURL URLWithString:@"https://www.apple.com"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[_webView loadRequest:request];
}
- (void)rightButtonTapped:(UIBarButtonItem *)sender {
NSLog(@"self.webView.scrollView.contentSize.height:%f", self.webView.scrollView.contentSize.height);
WKSnapshotConfiguration* configuration = [WKSnapshotConfiguration new];
configuration.rect = CGRectMake(0, 0, self.webView.scrollView.contentSize.width, self.webView.scrollView.contentSize.height);
// configuration.afterScreenUpdates = NO;
[self.webView takeSnapshotWithConfiguration:configuration completionHandler:^(UIImage * _Nullable snapshotImage, NSError * _Nullable error) {
if (error) {
NSLog(@"fail");
} else {
NSLog(@"succ");
}
}];
}
Running the code above, I get a blank image
JuiceLv
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NSString *jsonString = @"{\"key1\":\"value1\",\"key2\":\"value2\",\"key3\":\"value3\",\"key4\":\"value4\"}";
NSString *jsonString2 = @"{\"key2\":\"value2\",\"key1\":\"value1\",\"key4\":\"value4\",\"key3\":\"value3\"}";
NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSData *jsonData2 = [jsonString2 dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *dict1 = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil];
NSDictionary *dict2 = [NSJSONSerialization JSONObjectWithData:jsonData2 options:NSJSONReadingMutableContainers error:nil];
The expected results are：
dict1:key1,key2,key3,key4
dict2:key2,key1,key4,key3
Is there any way to make that happen?