如何在iPhone的UItoolbar左侧制作按钮
问题描述：
如何在iPhone的UItoolbar左侧放置一个按钮?
How can I make a button that is placed in the left side of a UItoolbar on the iPhone?
答
例如，您需要类似的东西.
As an example, you need something like this.
UIBarButtonItem *fixedCenter = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
fixedCenter.width = 80.0f;
UIBarButtonItem *fixedLeft = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
fixedLeft.width = 40.0f;
UIBarButtonItem *left = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"left.png"] style:UIBarButtonItemStylePlain target:self action:@selector(moveBack:)];
UIBarButtonItem *right = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"right.png"] style:UIBarButtonItemStylePlain target:self action:@selector(moveForward:)];
[self setToolbarItems:[NSArray arrayWithObjects:fixedLeft, flex, left, fixedCenter, right, flex, action, nil]];