IOS

  1. Apply for a free API KEYTo use the GoogleMaps SDK, you must apply for an api key for your application. The API Key allows you to monitor the api calls of your application. The api key is free. You can use it in any application that calls the

1 PrefaceIn the previous section, we talked about the custom view built with the XIB file. Let's take a look at it today without using the custom view of the XIB file. 2. DetailsDirectory structure    This time, we will not create XIB files, but

1 PrefaceThe simplest state an application encounters is transition from activity to activity, and then return to activity. Today, let's use an example to look at its specific application. 2. DetailsThe content here is relatively simple, so you can

[Cpp]//// ABCustomAlertView. h// KnowledgeChoice//// Created by on 13-6-19.// Copyright (c) 2013 DoubleMan. All rights reserved.// You can use custom controls and proxies .. # Import  @ Interface ABCustomAlertView: UIWindow // Display-(Void) show;//

1. Create a singleton Mode // // Ios24_saveObjectToFileViewController.h // Ios24-saveObjectToFile // // Created by on 13-6-18. // Copyright 2013 _ MyCompanyName _. All rights reserved. //   # Import   @ Interface

Note: When sending a local notification, you must exit the program.   // Instantiate the object UILocalNotification * notification = [[UILocalNotification alloc] init]; // Define the time for latency NSDate * now = [[NSDate alloc] init]; //

Basic knowledge about UIView   First, you must understand several basic concepts. 1) Three structs: CGPoint, CGSize, and CGRect 1. CGPoint   1./* Points .*/ 2. 3. struct CGPoint { 4. CGFloat x; 5. CGFloat y; 6 .}; 7. typedef struct CGPoint; 8.   2.

01 UIWindow * statusWindow = [[UIWindow alloc] initWithFrame: [UIApplication sharedApplication]. statusBarFrame]; 02 [statusWindow setWindowLevel: UIWindowLevelStatusBar + 1]; 03 [statusWindow setBackgroundColor: [UIColor clearColor]; 04 05 UILabel *

1 PrefaceSometimes there are multiple ways to build some objects. If these logics are included in a single method of the class that builds these objects, the building logic will be ridiculous (for example, A large nested if-else or switch-case

1 PrefaceIn software design, if the architect inserts too many methods into a class to extend the functions of the class, the class will become extremely complex. A better way is to create an external class to expand it, without making too many

1 Preface We borrowed the idea of pasting similar objects to save the object state and restore it later. The status itself is created as an object (instant post ). It encapsulates the internal state of the original object. Only the original object

We all know that UITextField has the placeholder attribute, and UITextView does not have placeholder. How can we simulate UITextfield to make UITextView have placeholder. The idea is: Inherit the uitextview and make [super text] display placeholder

I have seen some solutions, but they are not very good. I recently solved the problem of customizing the height of the tab bar. I was inspired to find the solution below. I personally think it is more concise than other methods found on the Internet.

    # Pragma mark UITextFieldDelegate   -(BOOL) textField :( UITextField *) textField shouldChangeCharactersInRange :( nsange) range replacementString :( NSString *) string { // Determine whether the input is a number (only numbers can be

SO9606-1 welders exam -- Melting Welding -- Part 1: SteelISO9606-2 welders -- Melting Welding -- Part 2: aluminum and aluminumWelding personnel -- Test of metal material full mechanization and automatic welding melting welding operation Attack

Take the following compatibility as an example. Add the following code to the pre-compiled project header file (xx. pch:   #import #define __AVAILABILITY_INTERNAL__IPHONE_3_2 __AVAILABILITY_INTERNAL_DEPRECATED #define

1. Delete:-(Void) tableView :( UITableView *) tableView commitEditingStyle :( UITableViewCellEditingStyle) editingStyle forRowAtIndexPath :( NSIndexPath *) indexPath{If (editingStyle = UITableViewCellEditingStyleDelete){NSLog (@"....");NSUInteger

Today, I encountered a situation where when I click UITableViewCell to highlight, the highlighted objects in its subviews are also highlighted. After a long time, I did not solve the problem. I did not find a way to study it with my colleagues,

Okay. In the previous article, we talked about generating a clipboard on UILabel. In this article, we will write two ways to use the clipboard on UITableView; I. Use in custom Cells In fact, cell usage is basically the same as label usage. 1.

So Easy!Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission (s): 813 Accepted Submission (s): 226 Problem DescriptionA sequence Sn is defined:     Where a, B, n, m are positive integers. percent x