我是iOS的新手。我正在使用UITabBarController创建iPhone应用程序。由于有5个标签项的限制，我在屏幕底部看到More...选项。
我想要的是显示底部的所有7个标签栏项目。主屏幕上的前5个并且有滚动选项，这样如果我滚动标签栏，我也可以看到第6和第7个标签。
有任何想法/建议如何完成这项工作？
-(void)addCustomElements
{
// Initialise our two images
UIImage *btnImage = [UIImage imageNamed:@"NavBar_01.png"];
UIImage *btnImageSelected = [UIImage imageNamed:@"NavBar_01_s.png"];
self.btn1 = [UIButton buttonWithType:UIButtonTypeCustom]; //Setup the button
btn1.frame = CGRectMake(0, 430, 80, 50); // Set the frame (size and position) of the button)
[btn1 setBackgroundImage:btnImage forState:UIControlStateNormal]; // Set the image for the normal state of the button
[btn1 setBackgroundImage:btnImageSelected forState:UIControlStateSelected]; // Set the image for the selected state of the button
[btn1 setTag:1]; // Assign the button a "tag" so when our "click" event is called we know which button was pressed.
[btn1 setSelected:true]; // Set this button as selected (we will select the others to false as we only want Tab 1 to be selected initially
// Now we repeat the process for the other buttons
btnImage = [UIImage imageNamed:@"NavBar_02.png"];
btnImageSelected = [UIImage imageNamed:@"NavBar_02_s.png"];
self.btn2 = [UIButton buttonWithType:UIButtonTypeCustom];
btn2.frame = CGRectMake(80, 430, 80, 50);
[btn2 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn2 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[btn2 setTag:2];
btnImage = [UIImage imageNamed:@"NavBar_03.png"];
btnImageSelected = [UIImage imageNamed:@"NavBar_03_s.png"];
self.btn3 = [UIButton buttonWithType:UIButtonTypeCustom];
btn3.frame = CGRectMake(160, 430, 80, 50);
[btn3 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn3 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[btn3 setTag:3];
btnImage = [UIImage imageNamed:@"NavBar_04.png"];
btnImageSelected = [UIImage imageNamed:@"NavBar_04_s.png"];
self.btn4 = [UIButton buttonWithType:UIButtonTypeCustom];
btn4.frame = CGRectMake(240, 430, 80, 50);
[btn4 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn4 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[btn4 setTag:4];
btnImage = [UIImage imageNamed:@"NavBar_05.png"];
btnImageSelected = [UIImage imageNamed:@"NavBar_05_s.png"];
self.btn5 = [UIButton buttonWithType:UIButtonTypeCustom];
btn5.frame = CGRectMake(340, 430, 80, 50);
[btn5 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn5 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[btn5 setTag:5];
scrlview = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 430, 400, 180)];
// set frame accordingly its random value
scrlview.backgroundColor = [UIColor colorWithRed:0.5 green:0.5 blue:0.5 alpha:1];
scrlview.contentSize = CGSizeMake(0, 430);
// Add my new buttons to the view
[scrlview addSubview:btn1];
[scrlview addSubview:btn2];
[scrlview addSubview:btn3];
[scrlview addSubview:btn4];
[scrlview addSubview:btn5];
[self.view addSubview:scrlview];
[scrlview release];
// Add my new buttons to the view
// [self.view addSubview:btn1];
// [self.view addSubview:btn2];
// [self.view addSubview:btn3];
// [self.view addSubview:btn4];
// [self.view addSubview:btn5];
// [self.view addSubview:]
// [scrlview addSubview:];
// Setup event handlers so that the buttonClicked method will respond to the touch up inside event.
[btn1 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn2 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn3 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn4 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn5 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
}
答案 0 :(得分：1)
创建自定义标签栏 的·H
@interface CustomTabBar : UITabBarController {
UIButton *btn1;
UIButton *btn2;
UIButton *btn3;
UIButton *btn4;
UIScrollView * scrlview;
}
-(void) hideTabBar;
-(void) addCustomElements;
@end
<强>的.m
-(void)addCustomElements
{
// initialsie scrollView and initialise contentOffset
// Initialise our two images
UIImage *btnImage = [UIImage imageNamed:@"NavBar_01.png"];
UIImage *btnImageSelected = [UIImage imageNamed:@"NavBar_01_s.png"];
btn1 = [UIButton buttonWithType:UIButtonTypeCustom]; //Setup the button
btn1.frame = CGRectMake(0, 430, 80, 50); // Set the frame (size and position) of the button)
[btn1 setBackgroundImage:btnImage forState:UIControlStateNormal]; // Set the image for the normal state of the button
[btn1 setBackgroundImage:btnImageSelected forState:UIControlStateSelected]; // Set the image for the selected state of the button
[btn1 setTag:0]; // Assign the button a "tag" so when our "click" event is called we know which button was pressed.
[btn1 setSelected:true]; // Set this button as selected (we will select the others to false as we only want Tab 1 to be selected initially
// Now we repeat the process for the other buttons
btnImage = [UIImage imageNamed:@"NavBar_02.png"];
btnImageSelected = [UIImage imageNamed:@"NavBar_02_s.png"];
btn2 = [UIButton buttonWithType:UIButtonTypeCustom];
btn2.frame = CGRectMake(80, 430, 160, 50);
[btn2 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn2 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[btn2 setTag:1];
btnImage = [UIImage imageNamed:@"NavBar_03.png"];
btnImageSelected = [UIImage imageNamed:@"NavBar_03_s.png"];
btn3 = [UIButton buttonWithType:UIButtonTypeCustom];
btn3.frame = CGRectMake(160, 430, 80, 50);
[btn3 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn3 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[btn3 setTag:2];
btnImage = [UIImage imageNamed:@"NavBar_04.png"];
btnImageSelected = [UIImage imageNamed:@"NavBar_04_s.png"];
btn4 = [UIButton buttonWithType:UIButtonTypeCustom];
btn4.frame = CGRectMake(240, 430, 80, 50);
[btn4 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn4 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[btn4 setTag:3];
// Add my new buttons to the view
[scrlview addSubview:btn1];
[scrlview addSubview:btn2];
[scrlview addSubview:btn3];
[scrlview addSubview:btn4];
[self.view addSubView: scrlview];
// Setup event handlers so that the buttonClicked method will respond to the touch up inside event.
[btn1 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn2 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn3 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[btn4 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
}
- (void)selectTab:(int)tabID
{
switch(tabID)
{
case 0:
[btn1 setSelected:true];
[btn2 setSelected:false];
[btn3 setSelected:false];
[btn4 setSelected:false];
break;
case 1:
[btn1 setSelected:false];
[btn2 setSelected:true];
[btn3 setSelected:false];
[btn4 setSelected:false];
break;
case 2:
[btn1 setSelected:false];
[btn2 setSelected:false];
[btn3 setSelected:true];
[btn4 setSelected:false];
break;
case 3:
[btn1 setSelected:false];
[btn2 setSelected:false];
[btn3 setSelected:false];
[btn4 setSelected:true];
break;
}
self.selectedIndex = tabID;
}
- (void)buttonClicked:(id)sender
{
int tagNum = [sender tag];
[self selectTab:tagNum];
}
请参阅Link
答案 1 :(得分：0)
您可以通过继承UITabBar并实现自己的自定义视图来实现此目的。应该相对简单。你可能会发现在UITabbar的子类化中有一些很好的信息...... How can I create my own UITabBar?