因此,我一直在用iOS作爲新手來戰鬥這個遊戲 - 我確定它不是我缺少的一個基本概念,或者是我還沒有碰到的一個屬性,我需要引用它。當沒有self.view時,如何找到UIView?
場景:視圖控制器創建一個UIScrollView。 UIView作爲多個UILabels(描述事件,地點和時間)的容器而創建。重複調用方法在塊內創建這些UILabel。逐個創建這些標籤可以很好地工作 - 只需將每個標籤添加到視圖中 - 但是當我將代碼移動到某個方法並重用它時,抽象出諸如文本大小,縮進等東西,我無法引用相同的父視圖(因爲它不是視圖控制器?),或者使用viewWithTag(不返回任何內容)來查找父級。
這是一個簡單的修復,還是我的基本結構有缺陷?非常感謝您的時間!
頁眉:
//
// ScheduleColumn.h
//
#import <Foundation/Foundation.h>
@interface ScheduleColumn : UIView {
}
- (void)makeTextBlock:(int)parentViewID label:(NSString*)label textSize:(int)textSize indent:(int)indent y:(int)y width:(int)width height:(int)height;
@end
實現:
//
// ScheduleColumn.m
//
#import "ScheduleColumn.h"
@implementation ScheduleColumn
// makeTextBlock: type, text, textSize, indent, build_y, width, height
// type: 0 = Title, 1 = Subtitle, 2 = Times
// text: Line content
// textSize: self-explanatory
// indent: indent from left side of parent
// build_y: # of units down from top of parent view to build
// width & height: self-explanatory
- (void)makeTextBlock:(int)parentViewID label:(NSString*)label textSize:(int)textSize indent:(int)indent y:(int)y width:(int)width height:(int)height {
double unixTime;
unixTime = [[NSDate date] timeIntervalSince1970];
NSLog(@"makeTextBlock called");
NSLog(@"parentViewID: %u", parentViewID);
NSLog(@"label: %@", label);
NSLog(@"textSize: %u", textSize);
NSLog(@"indent: %u", indent);
NSLog(@"y: %u", y);
NSLog(@"width: %u", width);
NSLog(@"height: %u", height);
NSLog(@"time: %u", unixTime);
UILabel *textView = [[UILabel alloc] initWithFrame:CGRectMake(indent, y, width, height)];
textView.backgroundColor = [UIColor clearColor];
textView.textColor = [UIColor whiteColor];
textView.lineBreakMode = UILineBreakModeWordWrap;
textView.numberOfLines = 0;
textView.tag = unixTime;
textView.font = [UIFont fontWithName:@"PetitaMedium" size: textSize];
textView.text = label;
CGSize constraintTextSize;
constraintTextSize.width = width;
constraintTextSize.height = MAXFLOAT;
CGSize theTextSize = [label sizeWithFont:[UIFont fontWithName:@"PetitaMedium" size: textSize] constrainedToSize:constraintTextSize lineBreakMode:UILineBreakModeWordWrap];
CGRect newTextFrame = textView.frame;
newTextFrame.size.height = theTextSize.height;
textView.frame = newTextFrame;
UIView *parentView = (UIView *)[self.view viewWithTag:parentViewID];
[parentView addSubview:textView];
[textView release];
NSLog(@"--- break ---");
}
..最後,從視圖控制器的呼叫:
int build_y;
int subtitle_indent;
build_y = 30;
subtitle_indent = 20;
UIView *blockView = [[UIView alloc] initWithFrame: CGRectMake (0, build_y, 185, 50)];
blockView.tag = 100;
[FireworksContent addSubview:blockView];
// Add top line
UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, blockView.bounds.size.width, 0.5)];
lineView.backgroundColor = [UIColor whiteColor];
[blockView addSubview:lineView];
// Add Block Text
ScheduleColumn *blockText = [ScheduleColumn alloc];
[blockText makeTextBlock:blockView.tag label:@"Venue" textSize:18 indent:subtitle_indent y:build_y width:blockView.bounds.size.width height:20];
[blockText makeTextBlock:blockView.tag label:@"ShowTitle" textSize:12 indent:subtitle_indent y:build_y width:blockView.bounds.size.width height:20];
[blockText makeTextBlock:blockView.tag label:@"Showtime" textSize:36 indent:subtitle_indent y:build_y width:blockView.bounds.size.width height:20];
[lineView release];
[blockText release];
[blockView release];
...的viewWithTag線失敗,因爲「自我「沒有觀點...將類更改爲UIViewController讓它運行,但仍然沒有喜悅。
.... aaaand這就是爲什麼我喜歡上網。先生,你是個紳士。我需要在對象中思考,而不是腳本!順便說一句,在那之後需要冒號「addSubview」。 :) 非常感謝你花時間陪伴! – JSpread 2011-04-20 15:20:01