我需要生成按钮的网格的iOS应用。 每个按钮需要两个参数：列的数量和行的数量。 A键也将有两种状态，启动和关闭。
当应用程序被加载我希望有像21行和16列。 和地方在屏幕上也将有一个按钮，上面写着“添加列”，这将增加每次广告点击时4个额外的列。
任何建议，我应该怎么做呢？ 我可以通过与IB将第一21层* 16的按钮启动，但会允许我将它与额外的列以后扩展，以及如何？
编辑：赏金只是开始奖励mbm30075，没有新的答案必要
Answer 1:
我相信这是一个更完整的解决方案。 这里的.H / .M对我写了测试：
ViewController.h
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@property (assign, nonatomic) int numColumns;
@property (assign, nonatomic) int numRows;
@property (strong, nonatomic) NSMutableArray *buttonsArray;
@property (strong, nonatomic) IBOutlet UIScrollView *scrollView;
@property (strong, nonatomic) IBOutlet UIButton *addButtons;
@property (strong, nonatomic) IBOutlet UIView *buttonsView;
- (IBAction)addFourMoreColumns;
@end
ViewController.m
#import "ViewController.h"
@implementation ViewController
@synthesize addButtons;
@synthesize buttonsArray;
@synthesize buttonsView;
@synthesize numColumns;
@synthesize numRows;
@synthesize scrollView;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self setButtonsArray:[NSMutableArray array]];
[self setNumColumns:16];
[self setNumRows:21];
[self layoutButtons];
}
- (void)layoutButtons {
static int width = 100;
static int height = 37;
static int buffer = 8; // space between buttons (horiz. & vert.)
static int margin = 20;
CGPoint topLeft = CGPointMake(margin,margin); // standard "top left" in iOS
// Since you appear to be wanting to modify the number of columns,
// I'm going to make the multi-dimension array an array of columns,
// with each column containing an array of buttons (representing the rows)
// Iterate through how many columns SHOULD exist ([self numColumns])
for (int i = 0; i < [self numColumns]; i = i + 1) {
// Check if this "column" exists (does this index exist in [self buttonsArray]?)
if (i >= [[self buttonsArray] count]) {
// It doesn't exist, so we need to add a blank array
[[self buttonsArray] addObject:[NSMutableArray array]];
}
NSMutableArray *column = [[self buttonsArray] objectAtIndex:i];
// Now, we iterate through how many rows/buttons SHOULD exist ([self numRows])
for (int j = 0; j < [self numRows]; j = j + 1) {
// Check if this "row"/"cell"/"button" exists
if (j >= [column count]) {
// It doesn't exist, so we need to add a new button AND PLACE IT!
// Of course, you need to make your button type correctly
// This is just standard button code...
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setFrame:CGRectMake(topLeft.x,topLeft.y,width,height)];
// Do whatever else you need to do with the button...
// Set title...
[btn setTitle:[NSString stringWithFormat:@"(%d,%d)", i + 1, j + 1] forState:UIControlStateNormal];
// Add target actions...
[btn addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
// Add the button to the view
[[self buttonsView] addSubview:btn];
// Add the button to the array
[column addObject:btn];
}
// Increment topLeft to the next "row" for correct button placement...
topLeft = CGPointMake(topLeft.x, topLeft.y + height + buffer);
}
// Increment topLeft to the next "column" for correct button placement...
topLeft = CGPointMake(topLeft.x + width + buffer, margin);
}
// So, I'm assuming your "add columns" button will be placed equivalent to
// "(columnCount + 1, 1)", or at the top of the screen, just to the right
// of the right-most column of buttons
// [self addButtons] is the property to the UIButton that calls [self addFourMoreColumns]
[[self addButtons] setFrame:CGRectMake(topLeft.x, topLeft.y, [[self addButtons] frame].size.width, [[self addButtons] frame].size.height)];
// Now, update the view that holds the buttons to give it a new size (based on the buttons added)
CGRect viewFrame = CGRectMake(0, 0, CGRectGetMaxX([[self addButtons] frame]) + buffer, 20 + ([[self buttonsArray] count] * (height + buffer)));
[[self buttonsView] setFrame:viewFrame];
[[self scrollView] setContentSize:viewFrame.size];
// Redraw the view...
[[self view] setNeedsDisplay];
}
- (IBAction)addFourMoreColumns {
[self setNumColumns:[self numColumns] + 4];
[self layoutButtons];
}
// Shows in the log which button you pressed: "(col, row)"
- (void)buttonPressed:(id)sender {
for (int i = 0; i < [[self buttonsArray] count]; i = i + 1) {
NSMutableArray *col = [[self buttonsArray] objectAtIndex:i];
for (int j = 0; j < [col count]; j = j + 1) {
if (sender == [col objectAtIndex:j]) {
NSLog(@"button (%d,%d) pressed", i + 1, j + 1);
break;
}
}
}
}
@end
厦门国际银行的设置是基本具备：
View // tied to [ViewController view]
|
--->ScrollView // tied to [ViewController scrollView]
|
--->View // tied to [ViewController buttonsView]
|
--->UIButton // tied to [ViewController addButtons]
Answer 2:
this can be achieved using the scroll view UIScrollView and using two for loops to add required buttons at run time like
for(int col = 0; col < [max column]; col++)
{
for(int row = 0; row < [max row]; row++)
{
//add buttons assigning them proper frame size
}
}
Answer 3:
您将需要以编程方式使用2个循环添加按钮。 还识别按钮给它们分配其可通过列号和行号的组合提出了若干标签。 例如： - 在第1行1列按钮可以有标签为11.使用的变量值就可以找出被点击的按钮，并执行相应的动作。
文章来源: Generate grid of buttons with two parameters for iOS
