current image not deleting from array - iphone

Question

I stored multiple images in database. And i fetched the images using SQLite and added these to array. When i click the button it displays the array of images under scrollview. In scrollview when i click particular image it goes to center of the screen. Center of the screen images having another imageview. When i delete particular image from array, the current image is not deleting.
code:
SQLiteManager:
Table name: SimpleTbl
id sm descrip photo
1 sm1 ok BLOB(size:2345)
2 sm2 ok1 BLOB(size:3245)
3 sm3 ok2 BLOB(size:4535)
.h file:
#interface Mysof : NSObject{
NSInteger sofId;
NSString *sof;
NSString *rating;
UIImage *photo;
}
#property (nonatomic,retain)NSString *sofa;
#property (nonatomic, assign) NSInteger sofaId;
#property (nonatomic, retain)NSString *rating;
#property (nonatomic, retain) UIImage *photo;
.m file:
- (NSMutableArray *) getMylists{
NSMutableArray *sArray = [[NSMutableArray alloc] init];
#try {
NSFileManager *fileMgr = [NSFileManager defaultManager];
NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:#"Sample.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.");
}
;
const char *sql = "SELECT * FROM SimpleTbl";
NSLog(#"sql is %s", sql);
sqlite3_stmt *sqlStatement;
if(sqlite3_prepare(db, sql, -1, &sqlStatement, NULL) != SQLITE_OK)
{
NSLog(#"Problem with prepare statement");
}
//
while (sqlite3_step(sqlStatement)==SQLITE_ROW) {
Mysof *Mylist = [[Mysof alloc]init];
Mylist.sofId = sqlite3_column_int(sqlStatement, 0);
Mylist.sof = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement,1)];
Mylist.rating = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 2)];
const char *raw = sqlite3_column_blob(sqlStatement, 3);
int rawLen = sqlite3_column_bytes(sqlStatement, 3);
NSData *data = [NSData dataWithBytes:raw length:rawLen];
Mylist.photo = [[UIImage alloc] initWithData:data];
[sArray addObject:Mylist];
}
}
#catch (NSException *exception) {
NSLog(#"An exception occured: %#", [exception reason]);
}
#finally {
return sArray;
}
}
Then viewcontroller i display the fetching image to imageview via button click:
-(void)click:(id)sender{
for (int i = 0; i<[self.arraysofs count]; i++ ) {
NSLog(#"index %d",i);
// imgView1=[[UIButton alloc]initWithFrame:CGRectMake(20+(i*74), 500, 72, 72)];
imgView1=[[UIButton alloc]initWithFrame:CGRectMake(20+(i*74), 0, 72, 72)];
Width = Width + 20+(i*74);
[imgView1 setTag:i+1];
[imgView1 addTarget:self action:#selector(arraysofsClicked:) forControlEvents:UIControlEventTouchUpInside];
[imgView1 setImage:((Mysof *)[self.arraysofs objectAtIndex:i]).photo forState:UIControlStateNormal];
[scrollview addSubview:imgView1];
// [myScroll addSubview:imgView1];
}
}
It displays the center of the screen:
-(void)arraysofsClicked:(id)sender{
NSLog(#"button %d is clicked.", [sender tag]-1);
mmageView=[[UIImageView alloc]initWithFrame:CGRectMake(50,50,150,150)];
[mmageView setUserInteractionEnabled:YES];
[mmageView setImage:((Mysof *) [self.arraysofs objectAtIndex:[sender tag]-1]).photo];
[self.view addSubview:mmageView];
UILongPressGestureRecognizer *dblongpress=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:#selector(dblongPress:)];
[mmageView addGestureRecognizer:dblongpress];
}
Long press for deleting images from center of the screen:
-(void)dblongPress:(UILongPressGestureRecognizer*)sender{
// NSLog(#"button %d is clicked.", [send tag]-1);
// [mmageView setImage:((Mysof *) [self.sofas objectAtIndex:[send tag]-1]).photo];
[mmageView removeFromSuperview];
}
If two images on the center of the screen, when i click first images the second is removing.

Answer 1

The imageview you are seeing after deleting is the older one which you added earlier. This is because every time you press the button, it calls -(void)arraysofsClicked, and a new instance of the imageview is added there.
Solution is:
put this in viewDidLoad
mnageView = nil;
& Change this method
-(void)arraysofsClicked:(id)sender{
// chcek is mnageView is initialized before or not
if(mmageView == nil) {
mmageView=[[UIImageView alloc]initWithFrame:CGRectMake(50,50,150,150)];
[mmageView setUserInteractionEnabled:YES];
[self.view addSubview:mmageView];
UILongPressGestureRecognizer *dblongpress=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:#selector(dblongPress:)];
[mmageView addGestureRecognizer:dblongpress];
}
// change image here
[mmageView setImage:((Mysof *) [self.arraysofs objectAtIndex:[sender tag]-1]).photo];
}
declare the mnageView globally in case you are not doing so. but from your code it seems you are declaring it globally.