implement Drag and Drop in UITable view
**I need to implement Drag and Drop in my table view.I have a table View in left side of my screen and i have an image View on right side of an screen.
I need to Drag a image from my table view to right side image view.
let me explain ..
I have an class named as "myClass" which contains the properties iD, name and imageURL.
image url holds the photolibrary alasset url.
myClass.h
@interface myClass: NSObject {
NSInteger iD;
NSString *name;
NSString *imageURL;
}
@property (nonatomic, assign) NSInteger iD;
@property (nonatomic, assign) NSString *name;
@property (nonatomic, assign) NSString *imageURL;
myClass.m
@implementation myClass
@synthesize iD;
@synthesize name;
@synthesize imageURL;
@end
So I added 50 image details with iD, name, imageURL as myClass objects in to an NSMutableArray named as *BundleImagesArray *
i displayed it in a table view. my code is:
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger) section {
//getting all image details with iD,name,imageURL as **myClass** objects
BundleImagesArray = [staticDynamicHandler getImageFromBundle];
int count = [BundleImagesArray count];
for (int i = 0; i<count; i++) {
//this array for easy scrolling after first time the table is loaded.
[imageCollectionArrays addObject:[NSNull null]];
}
return count;
}
cellForRowAtIndexPath
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
//removing all the subviews
开发者_开发技巧 if ([cell.contentView subviews]) {
for (UIView *subview in [cell.contentView subviews]) {
[subview removeFromSuperview];
}
}
cell.selectionStyle = UITableViewCellSelectionStyleNone;
[cell setAccessoryType:UITableViewCellAccessoryNone];
myClass *temp = [BundleImagesArray objectAtIndex:indexPath.row];
//adding image view
UIImageView *importMediaSaveImage=[[[UIImageView alloc] init] autorelease];
importMediaSaveImage.frame=CGRectMake(0, 0, 200,135 );
[cell.contentView addSubview:importMediaSaveImage];
//adding image label
UILabel *sceneLabel=[[[UILabel alloc] initWithFrame:CGRectMake(220,0,200,135)] autorelease];
sceneLabel.font = [UIFont boldSystemFontOfSize:16.0];
sceneLabel.textColor=[UIColor blackColor];
[cell.contentView addSubview:sceneLabel];
sceneLabel.text = temp.name;
if([imageCollectionArrays objectAtIndex:indexPath.row] == [NSNull null]){
//getting photlibrary image thumbnail as NSDAta
NSData *myData = [self photolibImageThumbNailData::temp.imageURL]
importMediaSaveImage.image =[UIImage imageWithData:myData ];
[imageCollectionArrays replaceObjectAtIndex:indexPath.row withObject:importMediaSaveImage.image];
} else {
importMediaSaveImage.image = [imageCollectionArrays objectAtIndex:indexPath.row];
}
temp = nil;
return cell
}
I need to Drag a image from my table view to my right side image view.can any one provide me a good way to do it
Drag and drop is not a standard interaction mode on the iPad. Users will not understand what they are supposed to do. You should allow a user to select an item in the left-hand table view using a simple tap instead and then update the image view based on the selection. Take a look at the Human Interface Guidelines.
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