ios - UITableView 背景颜色与 UITableViewCell 不同
<p><p>我将 tableView 背景颜色设置为与 tableViewCell 背景颜色相同，但颜色看起来不同。当设置为自定义颜色时，颜色看起来相同，但当没有自定义颜色设置时，它们是不同的。 isColorSet 在开始时为 0，因此两者都应设置为 <code>UIColor(red: 74/255, green: 187/255, blue: 224/255, alpha: 1.0)</code>。我怎样才能让颜色看起来一样？</p>
<p>设置tableView背景颜色:</p>
<pre><code>override func viewWillAppear(_ animated: Bool) {
//Set background color
if userDefaults.integer(forKey: "isColorSet") == 0 {
navigationController?.navigationBar.barTintColor = UIColor(red: 74/255, green: 187/255, blue: 224/255, alpha: 1.0)
tableView.backgroundColor = UIColor(red: 74/255, green: 187/255, blue: 224/255, alpha: 1.0)
} else if userDefaults.integer(forKey: "isColorSet") == 1 {
let red = CGFloat(userDefaults.float(forKey: "red"))
let green = CGFloat(userDefaults.float(forKey: "green"))
let blue = CGFloat(userDefaults.float(forKey: "blue"))
navigationController?.navigationBar.barTintColor = UIColor(red: red/255, green: green/255, blue: blue/255, alpha: 1.0)
tableView.backgroundColor = UIColor(red: red/255, green: green/255, blue: blue/255, alpha: 1.0)
}
}
</code></pre>
<p>设置tableViewCell背景颜色:</p>
<pre><code>override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "ideaCell") as! IdeaTableViewCell
cell.ideaTitleLabel.text = ideas.title
cell.ideaDescLabel.text = ideas.desc
//Set date
let date = userDefaults.object(forKey: "date.\(indexPath.section).\(indexPath.row)") as! Date
let month = Calendar.current.component(.month, from: date)
let day = Calendar.current.component(.day, from: date)
let year = Calendar.current.component(.year, from: date)
if userDefaults.string(forKey: "dateStyle") == "MDY" {
cell.ideaDateLabel.text = "\(month)/\(day)/\(year)"
} else if userDefaults.string(forKey: "dateStyle") == "DMY" {
cell.ideaDateLabel.text = "\(day)/\(month)/\(year)"
} else if userDefaults.string(forKey: "dateStyle") == "YMD" {
cell.ideaDateLabel.text = "\(year)/\(month)/\(day)"
}
//Set color
if userDefaults.integer(forKey: "isColorSet") == 0 {
cell.backgroundColor = UIColor(red: 74/255, green: 187/225, blue: 224/225, alpha: 1.0)
} else if userDefaults.integer(forKey: "isColorSet") == 1 {
let red = CGFloat(userDefaults.float(forKey: "red"))
let green = CGFloat(userDefaults.float(forKey: "green"))
let blue = CGFloat(userDefaults.float(forKey: "blue"))
cell.backgroundColor = UIColor(red: red/255, green: green/255, blue: blue/255, alpha: 1.0)
}
return cell
</code></pre>
<p>为 UserDefaults 设置 rgb 颜色:</p>
<pre><code>func HSBColorColorPickerTouched(sender: HSBColorPicker, color: UIColor, point: CGPoint, state: UIGestureRecognizer.State) {
setButton.backgroundColor = color
red = color.rgb()?.red
green = color.rgb()?.green
blue = color.rgb()?.blue
redLabel.text = "Red: \(red!)"
redSlider.value = Float(red)
greenLabel.text = "Green: \(green!)"
greenSlider.value = Float(green)
blueLabel.text = "Blue: \(blue!)"
blueSlider.value = Float(blue)
}
@IBAction func sliderValueChanged(_ sender: Any) {
red = redSlider.value
green = greenSlider.value
blue = blueSlider.value
if red != nil {
redLabel.text = "Red: \(red!)"
}
if green != nil {
greenLabel.text = "Green: \(green!)"
}
if blue != nil {
blueLabel.text = "Blue: \(blue!)"
}
setButton.backgroundColor = UIColor(red: CGFloat(red/255), green: CGFloat(green/255), blue: CGFloat(blue/255), alpha: 1.0)
}
@IBAction func setColor(_ sender: Any) {
userDefaults.removeObject(forKey: "red")
userDefaults.removeObject(forKey: "green")
userDefaults.removeObject(forKey: "blue")
userDefaults.set(red, forKey: "red")
userDefaults.set(green, forKey: "green")
userDefaults.set(blue, forKey: "blue")
if userDefaults.float(forKey: "isColorSet") == 0 {
userDefaults.set(1, forKey: "isColorSet")
}
_ = navigationController?.popToRootViewController(animated: true)
}
</code></pre>
<p> <a href="/image/szQfa.png" rel="noreferrer noopener nofollow">Screenshot with isColorSet = 0</a> </p>
<p> <a href="/image/VdL0T.png" rel="noreferrer noopener nofollow">Screenshot with isColorSet = 1</a> </p>
<p> <a href="/image/a4EwC.png" rel="noreferrer noopener nofollow">Screenshot of Color Picker</a> </p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>问题是以下行中的一个简单错字:</p>
<pre><code>cell.backgroundColor = UIColor(red: 74/255, green: 187/225, blue: 224/225, alpha: 1.0)
</code></pre>
<p>绿色和蓝色值的分母应该是 255。 </p></p>
<p style="font-size: 20px;">关于ios - UITableView 背景颜色与 UITableViewCell 不同，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/52709200/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/52709200/
</a>
</p>
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