在TableView中对单元格重新排序时获取索引路径？

Question

I want change the cells order in my tableview

I am using following code

-(void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath  
{    
    [tableView moveRowAtIndexPath:path1 toIndexPath:path2];
}

here path1 indexpath of row which user selected now I want find the indexpath of the row the user drop that cell so how can I find that toIndexPath(path2).

Answer 1

I think you're confused with the purpose of this method - this is a callback function of the UITableViewDataSource that's designed to notify the data model of changes in the table. From the docs:

Tells the data source to move a row at a specific location in the table view to another location.

The UITableView object sends this message to the data source when the user presses the reorder control in fromRow.

This means that what you need to do here is to make sure your model (Usually an array) is rearranged to sync properly with these changes.

Hope this gives you a good direction.

Answer 2

You should implement:

- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
return YES;
}

& also:

- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
 //do whatever you want after the row has been moved
}

Here is an example of drag N drop:

https://github.com/coderDove/UITableView-Drag-n-Drop

Hope this Helps!!!