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[英]'willRotateToInterfaceOrientation' not working for my DetailViewController
[英]Sending data to detailViewController not working?
我有一个UITableview,该数据库中已填充了数据库中的数据,我知道该如何将数据发送到另一个视图(detailViewController),但是我无法使其正常工作,现在我正在通过- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
发送数据- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
方法。 我在下面有两个类UITableview类和detail类。 我还有一个NSObject类,用于保存数据库的对象。 请检查一下,这是我的代码:
UITableView类代码。:
Header File
#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface ExerciseViewController : UITableViewController {
NSMutableArray *theauthors;
sqlite3 * db;
}
@property(nonatomic,retain) NSMutableArray *theauthors;
-(NSMutableArray *) authorList;
@end
实施文件
#import "ExerciseViewController.h"
#import "sqlColumns.h"
#import <sqlite3.h>
#import "UIColor+FlatUI.h"
#import "ExerciseDetailViewController.h"
@interface ExerciseViewController ()
@end
@implementation ExerciseViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = @"Abdominal";
[self authorList];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.theauthors count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"exerciseCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
sqlColumns *author = [self.theauthors objectAtIndex:indexPath.row];
UILabel *exerciseName = (UILabel *)[cell viewWithTag:101];
exerciseName.text = author.Name;
UILabel *equipment = (UILabel *)[cell viewWithTag:102];
equipment.text = author.Equipment;
NSString *string = author.Equipment;
NSString *trimmedString = [string stringByTrimmingCharactersInSet:
[NSCharacterSet whitespaceCharacterSet]];
if ([trimmedString isEqualToString:@"null"]) {
equipment.text = @"No Equipment";
}
UILabel *difficulty = (UILabel *)[cell viewWithTag:103];
difficulty.text = author.Difficulty;
if ([difficulty.text isEqualToString:@"Easy"]) {
difficulty.textColor = [UIColor emerlandColor];
}
if ([difficulty.text isEqualToString:@"Intermediate"]) {
difficulty.textColor = [UIColor belizeHoleColor];
}
if ([difficulty.text isEqualToString:@"Hard"]) {
difficulty.textColor = [UIColor alizarinColor];
}
if ([difficulty.text isEqualToString:@"Very Hard"]) {
difficulty.textColor = [UIColor alizarinColor];
}
UIImageView *cellImageView = (UIImageView *)[cell viewWithTag:100];
cellImageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"%@",author.File]];
UIView *bgColorView = [[UIView alloc] init];
bgColorView.backgroundColor = [UIColor cloudsColor];
bgColorView.layer.masksToBounds = YES;
[cell setSelectedBackgroundView:bgColorView];
return cell;
}
-(NSMutableArray *) authorList{
_theauthors = [[NSMutableArray alloc] initWithCapacity:10];
@try {
NSFileManager *fileMgr = [NSFileManager defaultManager];
NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:@"StayhealthyExercises.sqlite"];
BOOL success = [fileMgr fileExistsAtPath:dbPath];
if(!success)
{
NSLog(@"Cannot locate database file '%@'.", dbPath);
}
if(!(sqlite3_open([dbPath UTF8String], &db) == SQLITE_OK))
{
NSLog(@"An error has occured: %s", sqlite3_errmsg(db));
}
const char *query = "SELECT * FROM strengthexercises WHERE primarymuscle LIKE '%abdominal%'";
const char *sql = query;
sqlite3_stmt *sqlStatement;
if(sqlite3_prepare(db, sql, -1, &sqlStatement, NULL) != SQLITE_OK)
{
NSLog(@"Problem with prepare statement: %s", sqlite3_errmsg(db));
}else{
while (sqlite3_step(sqlStatement)==SQLITE_ROW) {
sqlColumns * author = [[sqlColumns alloc] init];
author.Name = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement,1)];
author.Muscle = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement,2)];
author.Description = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 3)];
author.File= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 4)];
author.Sets= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 5)];
author.Reps= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 6)];
author.Equipment= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 7)];
author.PrimaryMuscle= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 8)];
author.SecondaryMuscle= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 9)];
author.Difficulty= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 10)];
[_theauthors addObject:author];
}
}
sqlite3_finalize(sqlStatement);
}
@catch (NSException *exception) {
NSLog(@"Problem with prepare statement: %s", sqlite3_errmsg(db));
}
@finally {
sqlite3_close(db);
return _theauthors;
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:@"detail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
sqlColumns *author = [self.theauthors objectAtIndex:indexPath.row];
ExerciseDetailViewController *destViewController = segue.destinationViewController;
destViewController.exerciseImage.image = [UIImage imageNamed:author.File];
destViewController.descriptionLabel.text = author.Description;
}
}
@end
现在,DetailViewController
头文件:
#import <UIKit/UIKit.h>
#import "sqlColumns.h"
@interface ExerciseDetailViewController : UIViewController
@property (weak, nonatomic) IBOutlet UIImageView *exerciseImage;
@property (weak, nonatomic) IBOutlet UILabel *descriptionLabel;
@property (nonatomic, strong) sqlColumns *author;
@end
实施文件
#import "ExerciseDetailViewController.h"
#import "ExerciseViewController.h"
@interface ExerciseDetailViewController ()
@end
@implementation ExerciseDetailViewController
@synthesize exerciseImage,descriptionLabel,author;
- (void)viewDidLoad
{
[super viewDidLoad];
descriptionLabel.text = author.Description;
NSLog(@"%@",author.Description);
}
@end
必须是一个小错误,任何帮助将不胜感激!
我认为问题在于您的门店数量为零。 您只能在调用viewDidLoad之后设置文本和图像。
尝试将您的信息保存在其他属性中,并在调用viewDidLoad之后,将此信息分配给标签和图像视图。
在准备进行测试时:
destViewController.image = [UIImage imageNamed:author.File];
destViewController.text = author.Description;
在标题中添加以下属性:
@property (strong, nonatomic) UIImage *image;
@property (strong, nonatomic) NSString *text;
然后在您的viewDidLoad中:
exerciseImage.image = self.image;
descriptionLabel.text = self.text;
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