导航栏背景图像未扩展到搜索栏

Question

所以我以前将搜索控制器嵌入到导航栏中，以便导航栏的渐变也覆盖了搜索栏。

突然间，我相信通过XCode更新，我发现现在导航栏的背景色牢牢地停在搜索控制器的顶部。我很难查明发生这种情况的原因。

这是我当前的代码，以前有效。有什么想法吗？

Traceback (most recent call last):
  File "<>", line 7, in <module>
    wb.save('practicewb')
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\openpyxl\workbook\workbook.py", line 409, in save
    save_workbook(self, filename)
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\openpyxl\writer\excel.py", line 294, in save_workbook
    writer.save()
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\openpyxl\writer\excel.py", line 276, in save
    self.write_data()
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\openpyxl\writer\excel.py", line 76, in write_data
    self._write_worksheets()
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\openpyxl\writer\excel.py", line 216, in _write_worksheets
    self.write_worksheet(ws)
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\openpyxl\writer\excel.py", line 201, in write_worksheet
    writer.write()
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\openpyxl\worksheet\_writer.py", line 356, in write
    self.write_rows()
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\openpyxl\worksheet\_writer.py", line 124, in write_rows
    self.write_row(xf, row, row_idx)
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\openpyxl\worksheet\_writer.py", line 133, in write_row
    attrs.update(dims.get(row_idx, {}))
TypeError: 'int' object is not iterable
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\openpyxl\worksheet\_writer.py", line 33, in _openpyxl_shutdown
    os.remove(path)
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\philt\\AppData\\Local\\Temp\\openpyxl.gtzivgcp'

Process finished with exit code 1

Answer 1

该代码有两个问题。首先，停止入侵搜索栏：

self.searchController.searchBar.barTintColor = UIColor.clear // no
self.searchController.searchBar.backgroundImage = UIImage() // no
searchController.searchBar.backgroundColor = UIColor.clear // no
searchController.searchBar.barStyle = .blackTranslucent // no

第二，停止入侵导航栏：从您的代码中完全删除GradientView。

class GradientView: UIView { // no

只需使用框架提供的工具即可。设置导航栏的背景图像（为渐变图像）并 stop 。搜索控制器的搜索栏会自动自动将其正确集成到导航栏中：

编辑好的，事实证明，这仅是iOS 13的问题。那是因为您要做的不是在iOS 13中如何向导航栏添加背景图像。您必须将代码分叉：

    if #available(iOS 13.0, *) {
        let app = UINavigationBarAppearance()
        app.backgroundImage = im // the gradient image
        self.navigationController?.navigationBar.scrollEdgeAppearance = app
        self.navigationController?.navigationBar.standardAppearance = app
    } else {
        // your old code goes here
    }

Answer 2

可处理ios 12和13的Swift 5。

这是基于哑光的答案。

 if #available(iOS 13.0, *) {
        let app = UINavigationBarAppearance()
        app.backgroundImage = UIImage(named: "img")
        self.navigationController?.navigationBar.scrollEdgeAppearance = app
        self.navigationController?.navigationBar.standardAppearance = app
    } else {
       // iOS 12 to below
       if let navigationbar = self.navigationController?.navigationBar {
       navigationbar.barTintColor = UIColor(patternImage: UIImage(named: "img")!)
       navigationbar.isTranslucent = false
    }
   }