Question

我想在我的应用程序中添加“为此应用评分”，我目前正在通过UIAlertView进行此操作。

警报显示正常，标题和取消/完成按钮。

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Rate this App"
                                                message:@"My message" delegate:self
                                      cancelButtonTitle:@"Cancel"
                                      otherButtonTitles:@"OK", nil];
[alert show];

我现在需要做的是用5个自定义按钮（星号）替换“我的消息”部分。

如何在uialertview的中间部分添加一行自定义按钮？！

Answer 1

您有两个选择

使用[alertView addSubview:[[UIButton alloc] init:...]]
从UIAlertView继承新视图并在内部执行

如果它只显示在一个地方，1是一个快速简便的解决方案。您可以为每个按钮设置标签并添加相同的点击事件

// Interface.h

NSArray *allButtons;

// Implementation.m

UIAlertView *alert = [[UIAlertView alloc] init:...];

UIButton *one = [UIButton buttonWithType:UIButtonTypeCustom];
UIButton *two = [UIButton buttonWithType:UIButtonTypeCustom];
...

// Load "empty star" and "filled star" images
UIImage *starUnselected = ...;
UIImage *starSelected = ...;

[one setImage:starUnselected forControlState:UIControlStateNormal];
[one setImage:starSelected forControlState:UIControlStateSelected];
// repeat for all buttons
...

[one setTag:1];
[two setTag:2];
...

[one addTarget:self action:@selector(buttonPressed:) 
     forControlEvents:UIControlEventTouchUpInside];

// repeat for all buttons

allButtons = [NSArray arrayWithObjects:one, two, three, four, five];

// all buttons should subscribe
- (void)buttonPressed:(UIButton)sender 
{
    int tag = [sender getTag]; // The rating value

    for (int i = 0; i < [allButtons length]; i++)
    {
        BOOL isSelected = i < tag;

        [(UIButton)[allButtons objectAtIndex:i] setSelected:isSelected];
    }

    // Set alertTag to store current set one
    // read [alert getTag] when OK button is pressed
    [alert setTag:tag];
}

uialertview添加了用于评级弹出窗口的按钮

1 个答案: