NSDictionary包含<nil>價值，同時閱讀plist文件

Question

我目前正在嘗試讀取一個plist文件，並試圖顯示在UITableView中的數據，但在閱讀plist文件時我得到零數據。

編輯

plist文件結構：

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> 
<plist version="1.0"> 
<array> 
    <dict> 
     <key>Title</key> 
     <string>Mr</string> 
     <key>First Name</key> 
     <string>xxxxxx</string> 
     <key>Last Name</key> 
     <string>yyyyyyy</string> 
     <key>Designation</key> 
     <string>Senior Engineer</string> 
    </dict> 
</array> 
</plist> 

現在代碼

NSString *path = [[NSBundle mainBundle] pathForResource:@"Data" ofType:@"plist"]; 

NSDictionary *dict = [[NSDictionary alloc] initWithContentsOfFile:path]; 

NSArray *valueArray = [dict allKeys]; 

/* 
Printing description of path: 
/Users/rock/Library/Application Support/iPhone Simulator/6.0/Applications/2567D2B3-56D4-4464-9EFC-CAB923ABE955/PlistTableView.app/Data.plist 
Printing description of dict: 
<nil> 
Printing description of valueArray: 
<nil> 
*/ 

現在，這兩個字典&數組不包含任何數據究竟是什麼原因呢？我如何在表格視圖中顯示兩個鍵&值？

Answer 1

你的plist文件裏面包含數組字典。因此，無論使用

NSArray *array = [[NSArray alloc] initWithContentsOfFile:path]; 
NSDictionary *dict = [array objectAtIndex:0]; 

或更改plist文件的結構

<plist version="1.0"> 
<dict> 
    <key>Title</key> 
    <string>Mr</string> 
    <key>First Name</key> 
    <string>xxxxxx</string> 
    <key>Last Name</key> 
    <string>yyyyyyy</string> 
    <key>Designation</key> 
    <string>Senior Engineer</string> 
</dict> 
</plist> 

Answer 2

在文件的開頭試試這個：

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> 
<plist version="1.0"> 

Answer 3

在頂部，你有一個<array>而不是<dict>。因此，它應該是這樣的......

NSString *path = [[NSBundle mainBundle] pathForResource:@"Data" ofType:@"plist"]; 
NSArray *array = [[NSArray alloc] initWithContentsOfFile:path]; 
NSDictionary *dict=[array objectAtIndex:0]; 
NSArray *valueArray = [dict allKeys];