/** @since Available in iOS 9.0 and later. */
public static NSObject observeAccountChanged(final Runnable block) {
return NSNotificationCenter.getDefaultCenter()
.addObserver(
AccountChangedNotification(),
null,
NSOperationQueue.getMainQueue(),
new VoidBlock1<NSNotification>() {
@Override
public void invoke(NSNotification a) {
block.run();
}
});
}
public static NSObject observeKeyboardDidHide(final VoidBlock1<UIKeyboardAnimation> block) {
return NSNotificationCenter.getDefaultCenter()
.addObserver(
KeyboardDidHideNotification(),
null,
NSOperationQueue.getMainQueue(),
new VoidBlock1<NSNotification>() {
@Override
public void invoke(NSNotification a) {
block.invoke(new UIKeyboardAnimation(a.getUserInfo()));
}
});
}
public static NSObject observeDidResignKey(final VoidBlock1<UIWindow> block) {
return NSNotificationCenter.getDefaultCenter()
.addObserver(
DidResignKeyNotification(),
null,
NSOperationQueue.getMainQueue(),
new VoidBlock1<NSNotification>() {
@Override
public void invoke(NSNotification a) {
block.invoke((UIWindow) a.getObject());
}
});
}
private void loadImages(Runnable completed) {
new Thread(
() -> {
List<UIImage> images = new ArrayList<>();
for (String url : imageUrls) {
File path = ImageCache.getInstance().downloadImage(url);
if (path != null) {
images.add(new UIImage(path));
}
}
NSOperationQueue.getMainQueue()
.addOperation(
() -> {
imageView.setImages(images);
completed.run();
});
})
.start();
}