How can I create a big, red UIButton with iOS?

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一整个雨季
一整个雨季 2020-11-29 15:03

Using iOS, how would I go about creating a red \"delete\" button similar to the one used when deleting contacts on the iPhone?

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  •  野性不改
    2020-11-29 15:36

    You first start with a stretchable image:

    alt text http://grab.by/4lP

    Then you make a button with the stretched image as the background and apply text.

    UIButton *sampleButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [sampleButton setFrame:CGRectMake(kLeftMargin, 10, self.view.bounds.size.width - kLeftMargin - kRightMargin, 52)];
    [sampleButton setTitle:@"Button Title" forState:UIControlStateNormal];
    [sampleButton setFont:[UIFont boldSystemFontOfSize:20]];
    [sampleButton setBackgroundImage:[[UIImage imageNamed:@"redButton.png"] stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0] forState:UIControlStateNormal];
    [sampleButton addTarget:self action:@selector(buttonPressed) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:sampleButton];
    

    Obviously, you will need to adjust the frame origin and size to match your app, as well as the target, selector, and title.

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