iPhone：当用户摇动时修改视图 [英] iPhone: modifying view when user shakes

问题描述

我正在开发一个iPhone应用程序，当用户摇晃手机时从表视图中删除行。我创建了一个基于导航的项目。现在，当用户摇动iPhone，我想要导航栏的标题更改为删除和删除按钮出现在导航栏上，在同一视图。否则，当用户选择特定行时，它应该移动到下一个视图。我写了以下代码，但它不工作。请帮助我。

   - （void）tableView：（UITableView *）tableView didSelectRowAtIndexPath：（NSIndexPath *）indexPath 
 {
 if（isShaked == NO）
 {
 //移动到下一个视图的逻辑就在这里。 
} 
 else 
 {
 
 self.title = @删除行; 
 delete = [[UIBarButtonItem alloc] initWithTitle：@Delete rowsstyle：
 UIBarButtonItemStyleBordered target：self action：@selector（deleteItemsSelected）]; 
 
 self.navigationItem.rightBarButtonItem = self.delete; 
 MyTableCell * targetCustomCell =（MyTableCell *）[tableView cellForRowAtIndexPath：indexPath]; 
 [targetCustomCell checkAction]; 
 [self.tempArray addObject：[myModal.listOfStates objectAtIndex：indexPath.row]]; 
 
 // [delete addTarget：self action：@selector（deleteItemsSelected :) forControlEvents：UIControlEventTouchUpInside]; 
 
 self.tempTableView = tableView; 
} 
} 
 
  - （void）deleteItemsSelected 
 {
 [myModal.listOfStates removeObjectsInArray：tempArray]; 
 [tempTableView reloadData]; 
} 
  

checkAction

解决方案

检查这些方法/ API：

   - （void）motionBegan：（UIEventSubtype）motion withEvent：（UIEvent *）event 
 
  - motionEancelled：（UIEventSubtype）motion withEvent：（UIEvent *）event 
 
  - （void）motionEnded：（UIEventSubtype）motion withEvent：（UIEvent *）event 
  / pre> 
 
 
这些是为运动识别提供的事件处理程序。在使用这些文档之前，请先阅读文档。
 
I am developing an iPhone application which deletes rows from a table view when the user shakes the phone. I have created a navigation-based project. Now when the user shakes the iPhone I want the title of the navigation bar to change to "DELETE" and a delete button to appear on the navigation bar, in the same view. Otherwise, when a user selects a particular row it should move to the next view. I have written the following code but it's not working. Please help me out.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{
    if (isShaked == NO) 
    {       
    //logic to move to next view goes here.
    }   
    else 
    {

        self.title = @"Delete Rows";
        delete=[[UIBarButtonItem alloc] initWithTitle:@"Delete rows" style:  
UIBarButtonItemStyleBordered  target:self action:@selector(deleteItemsSelected)] ;

                 self.navigationItem.rightBarButtonItem=self.delete;
        MyTableCell *targetCustomCell = (MyTableCell *)[tableView  cellForRowAtIndexPath:indexPath];
        [targetCustomCell checkAction];
        [self.tempArray addObject: [myModal.listOfStates objectAtIndex:indexPath.row]];

        //[delete addTarget:self action:@selector(deleteItemsSelected:) forControlEvents:UIControlEventTouchUpInside];

        self.tempTableView = tableView;
    }
}

-(void)deleteItemsSelected
{
    [myModal.listOfStates removeObjectsInArray:tempArray];
    [tempTableView reloadData];
}
checkAction method is a custom cell method which is used to put a tickmark on the row selected.
解决方案
Check these methods/APIs:
- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event

- (void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event

- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
These are event handlers provided for motion recognition. Go through the document before using these.

                        
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