Question

怎么在xcode工程中创建自己的plist文件

Answer 1

1.NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"plist.plist"]; NSFileManager *fileManager = [NSFileManager defaultManager];

if (![fileManager fileExistsAtPath: path])
{
path = [documentsDirectory stringByAppendingPathComponent: [NSString stringWithFormat: @"plist.plist"] ];
}

NSMutableDictionary *data = [[NSMutableDictionary alloc] initWithContentsOfFile: path];

NSFileManager *fileManager = [NSFileManager defaultManager];
NSMutableDictionary *data;

if ([fileManager fileExistsAtPath: path])
{
data = [[NSMutableDictionary alloc] initWithContentsOfFile: path];
}
else
{
// If the file doesn’t exist, create an empty dictionary
data = [[NSMutableDictionary alloc] init];
}

//To insert the data into the plist
int value = 5;
[data setObject:[NSNumber numberWithInt:value] forKey:@"value"];
[data writeToFile: path atomically:YES];
[data release];

//To reterive the data from the plist
NSMutableDictionary *savedStock = [[NSMutableDictionary alloc] initWithContentsOfFile: path];
int value1;
value1 = [[savedStock objectForKey:@"value"] intValue];
NSLog(@"%i",value1);
[savedStock release];

2. 如果你将要创建plist中没有编程的请按照下列步骤操作：1. Right Click on Files in Left Pane and Select 'New File...' option.
2. Choose Resources from OS X tab.
3. An option for Property List is available.
4. Select an give an appropriate name.

This gets added to your project.

Hope this might help. ![enter image description here][1]

3. 我们可以简单的理解有关的plist如下 现在你可以如下读取这些数据NSString *path = [[NSBundle mainBundle] pathForResource:@"Priority" ofType:@"plist"];
NSDictionary *dictPri = [NSDictionary dictionaryWithContentsOfFile:path];//mm
NSMutableArray *arrMarkets=[[NSMutableArray alloc] initWithArray:[dictPri valueForKey:@"List"]];
NSMutableArray *arrForTable=[[NSMutableArray alloc] init];
NSMutableArray *arrForTable1=[[NSMutableArray alloc] init];
for (NSDictionary *dict in arrMarkets)
{
NSString *strS1=nil;
strS1= [NSString stringWithFormat:@"%@",[dict valueForKey:@"Description"] ];
[arrForTable addObject:strS1];
}
NSLog(@"%@----------------- ",[arrForTable description]);
for (NSDictionary *dict in arrMarkets)
{
NSString *strS2=nil;
strS2= [NSString stringWithFormat:@"%@",[dict valueForKey:@"Name"] ];
[arrForTable1 addObject:strS2];
}
NSLog(@"%@----------------- ",[arrForTable1 description]);

4. 创建新的plist文件-NSArray *Arr = [NSArray arrayWithObjects:obj1,obj2,nil];
NSData *data = [NSPropertyListSerialization dataFromPropertyList:Arr format:NSPropertyListXMLFormat_v1_0 errorDescription:nil];

[data writeToFile:PlistDataFilePath atomically:YES];

阅读从这个plist文件的数据-NSData *data = [NSData dataWithContentsOfFile:PlistDataFilePath];
NSPropertyListFormat format;
NSArray *array = [NSPropertyListSerialization propertyListFromData:data mutabilityOption:NSPropertyListImmutable format:&format errorDescription:nil];