When entering the price, the keyboard that pops out can only have digits and decimal points. The pop-up keyboard doesn’t have the completion key. You can click exit if you want to exit the keyboard, but for a better user experience, add a UI Toolbar to the keyboard.
Set ToolBar:
- (UIToolbar *)addToolbar {
UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth(self.view.frame), 30)];
toolbar.tintColor = [UIColor blackColor];
toolbar.backgroundColor = [UIColor lightGrayColor];
UIBarButtonItem *prevItem = [[UIBarButtonItem alloc] initWit...
After all, it’s a piece of cake, so the first thing to do is configure the environment. I’m using Unity 2018.2.1f1, Xcode 9.4.1, MAC 10.13.4. (You don’t have to use mac, wind to publish Xcode projects with UnityOws can also be released, but the released project will eventually need to be opened with Xcode software on the MAC computer, as we’ll see later). Apple’s development process did not touch the time feel: grasp grass, apple so tall things, feel so complicated and complex ah! When you successfully publish aWhen you are in the product, you will feel: Th...
UIBezierPath and CAShapeLayer need to be implemented.
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];view.backgroundColor = [UIColor redColor];[self.view addSubview:view];UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:view.bounds byRoundingCorners:UIRectCornerTopLeft | UIRectCornerBottomRight cornerRadii:CGSizeMake(20, 20)];CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];maskLayer.frame = view.bounds;maskLayer.path = maskPath.CGPath;view.layer.mask = maskLayer;
Select the top and bottom by enumerating type UIRectCorner.
typedef NS...
Question Description:
iosThe system has been popping up the “new iOS updates available, please update from iOS 12 beta” prompt, very annoying.
It should only appear on the phone that installs the beta version of ios12.
Solution:
Deletion of description file cannot be resolved.
There is a netizen mechanism to change the date to the previous day, can be solved, in this foundation there are netizens more witty, date to the previous year
But changing dates may affect the use of some applications. If you can accept the change of time, this method is good.
There is also a solution for ...
On iOS 11, 1. First execute the animation group to execute frame animation in the set picture, 2. Set the picture in the set frame animation, execute frame animation without any problem.
On iOS 10 and iOS 9, you must execute method 2 (first set the picture to set the frame animation, execute the frame animation), otherwise you can’t set the picture after the frame animation.
/// imageViewTo achieve frame animation, the last picture transposition with the right number of open box picture has been received.///
/// - Parameters:
/// - imageCount: Number of animations...
AndroidMediaPlayer Player Player Player is provided to play media files, but MediaPlyer only packages MediaCodec and MediaExtractor under Android Media for easy use. But it’s best to understand An.Droid media file decoding, encoding and rendering process.
Useandroid.mediaThe MediaCodec and MediaExtractor under the package implement a simple video decoding rendering.
It has been used to:
MediaCodec:Responsible for coding and decoding media files. Internal methods are native methods.
MediaExtractor:Is responsible for finding the track from the file of the specified type of media file...
Introduction to BroadcastReceiver
BroadcastReceiverIs one of the four components to complete communication between components or applications.
Broadcast: Radio broadcast
BroadcastReceiver: Broadcast receivers
A radio and broadcast receiver completes a message mechanism at the weight level because it needs to activate the component.
Two attention
Every time a broadcast message arrives in Android, an instance of BroadcastReceiver is created and the onReceive () method is executed
onReceive()After execution of the method, the instance of BroadcastReceiver will be destroyed.
onReceive()Method ...
