UITableView Scroll to the specified location in IOS _ios

The method is simple:

-(void) Scrolltorowatindexpath: (Nsindexpath *) Indexpath atscrollposition: (uitableviewscrollposition) Scrollposition animated: (BOOL) animated

There are some places to look for:

If you need to get tableview cell, height, or scrolling tableview immediately after reloaddata, then it is possible to execute code directly after Reloaddata.

Reloaddate does not wait for the TableView update to return, but immediately returns, then calculates the table height, obtains the cell and so on.

If the data in the table is very large and does not finish in a run loop cycle, then the operation that requires TableView view data will be problematic.

Apple does not provide reloaddata APIs directly, and if you want the program to be delayed until the end of the reloaddata operation, you can use the following methods:

Method One:

[Self.tableview Reloaddata];
[Self.tableview layoutifneeded];
Refresh Complete

Method Two:

[Self.tableview Reloaddata];
Dispatch_async (Dispatch_get_main_queue (), ^{
//Refresh complete
});

Reloaddate is executed in the primary queue, and Dispatch_get_main_queue waits for the opportunity until the home team column is idle.

Similar functions:

-(void) Scrolltorowatindexpath: (Nsindexpath *) Indexpath atscrollposition: (uitableviewscrollposition) Scrollposition animated: (BOOL) animated;
-(void) Scrolltonearestselectedrowatscrollposition: (uitableviewscrollposition) scrollposition animated: (BOOL) Animated;
-(void) Setcontentoffset: (Cgpoint) Contentoffset animated: (BOOL) animated; Animate at constant velocity to new offset
-(void) scrollRectToVisible: (cgrect) Rect animated: (BOOL) animated;

When you use [TableView reloaddata], you cannot use the above function directly after refreshing the data. Reload

The above is a small set to introduce the iOS UITableView scrolling to the designated location, I hope to help you, if you have any questions please give me a message, small series will promptly reply to everyone. Here also thank you very much for the cloud Habitat Community website support!