[英]how to make a textField moves
当我按下它时,我可以在View中自由更改位置
-(IBAction)添加:(id)sender {
CGRect frame = CGRectMake(kLeftMargin, 8.0, kTextFieldWidth, kTextFieldHeight);
UITextField * textfieldToAdd = [[[UITextField alloc] initWithFrame:frame] autorelease];
textfieldToAdd.borderStyle = UITextBorderStyleRoundedRect;
textfieldToAdd.textColor = [UIColor blackColor];
textfieldToAdd.font = [UIFont systemFontOfSize:17.0];
textfieldToAdd.placeholder = @"";
textfieldToAdd.backgroundColor = [UIColor whiteColor];
textfieldToAdd.autocorrectionType = UITextAutocorrectionTypeNo ; // no auto correction support
textfieldToAdd.keyboardType = UIKeyboardTypeDefault; // use the default type input method (entire keyboard)
textfieldToAdd.returnKeyType = UIReturnKeyDone;
textfieldToAdd.clearButtonMode = UITextFieldViewModeWhileEditing; // has a clear 'x' button to the right
textfieldToAdd.tag = kViewTag; // tag this control so we can remove it later for recycled cells
textfieldToAdd.delegate = self; // let us be the delegate so we know when the keyboard's "Done" button is pressed
// Add an accessibility label that describes what the text field is for.
[textfieldToAdd setAccessibilityLabel:NSLocalizedString(@"textfieldToAdd", @"")];
[self.view addSubview:textfieldToAdd];
}
首先将gestureRecognizer添加到ViewDidLoad,然后创建函数
或最好在这里看MoveME示例
UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panPiece:)];
[panGesture setMaximumNumberOfTouches:2];
[panGesture setDelegate:self];
[self addGestureRecognizer:panGesture];
- (void)panPiece:(UIPanGestureRecognizer *)gestureRecognizer
{
if ([gestureRecognizer state] == UIGestureRecognizerStateBegan || [gestureRecognizer state] == UIGestureRecognizerStateChanged) {
CGPoint translation = [gestureRecognizer translationInView:self.view];
textfieldToAdd.center = CGPointMake([self center].x + translation.x, [self center].y + translation.y);
[gestureRecognizer setTranslation:CGPointZero inView:[self superview]];
}
}
我想拖动此textField
self.navigationItem.rightBarButtonItem = [[[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(add :)] autorelease];
}
-(IBAction)添加:(id)sender {
CGRect frame = CGRectMake(kLeftMargin, 8.0, kTextFieldWidth, kTextFieldHeight);
UITextField * textfieldToAdd = [[[UITextField alloc] initWithFrame:frame] autorelease];
textfieldToAdd.borderStyle = UITextBorderStyleRoundedRect;
textfieldToAdd.textColor = [UIColor blackColor];
textfieldToAdd.font = [UIFont systemFontOfSize:17.0];
textfieldToAdd.placeholder = @"";
textfieldToAdd.backgroundColor = [UIColor whiteColor];
textfieldToAdd.autocorrectionType = UITextAutocorrectionTypeNo ; // no auto correction support
textfieldToAdd.keyboardType = UIKeyboardTypeDefault; // use the default type input method (entire keyboard)
textfieldToAdd.returnKeyType = UIReturnKeyDone;
textfieldToAdd.clearButtonMode = UITextFieldViewModeWhileEditing; // has a clear 'x' button to the right
textfieldToAdd.tag = kViewTag; // tag this control so we can remove it later for recycled cells
textfieldToAdd.delegate = self; // let us be the delegate so we know when the keyboard's "Done" button is pressed
// Add an accessibility label that describes what the text field is for.
[textfieldToAdd setAccessibilityLabel:NSLocalizedString(@"textfieldToAdd", @"")];
[self.view addSubview:textfieldToAdd];
}
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