如何从NSDocumentDirectory属性列表中获取数据?

Question

这是一个如何从:

读取文件的教程。

NSDictionary *dictRoot = [NSDictionary dictionaryWithContentsOfFile:[[NSBundle mainBundle]pathForResource:@"TestPlist" ofType:@"plist"]];

我想从文档中读取文件?

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

完整代码:

#import "ViewController.h"
@interface ViewController () {
NSMutableArray *subjectList;
NSMutableArray *contentList;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.

subjectList = [[NSMutableArray alloc]init];
contentList = [[NSMutableArray alloc]init];

NSDictionary *dictRoot = [NSDictionary dictionaryWithContentsOfFile:[[NSBundle mainBundle]pathForResource:@"TestPlist" ofType:@"plist"]];
NSArray *arrayList = [NSArray arrayWithArray:[dictRoot objectForKey:@"Data"]];
[arrayList enumerateObjectsUsingBlock:^(id obj, NSUInteger index, BOOL *stop) {
[subjectList addObject:[obj valueForKey:@"Title"]];
[contentList addObject:[obj valueForKey:@"Content"]];
}];
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [subjectList count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *simpleTableIdentifier = @"SimpleTableItem";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

if(cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:simpleTableIdentifier];
}

cell.textLabel.text = [subjectList objectAtIndex:indexPath.row];
cell.detailTextLabel.text = [contentList objectAtIndex:indexPath.row];

return cell;

}
@end

我该怎么做呢?提前感谢:(

Answer 1

已解决

解决方案后完整代码:

#import "ViewController.h"
@interface ViewController () {
NSMutableArray *subjectList;
NSMutableArray *contentList;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];

subjectList = [[NSMutableArray alloc]init];
contentList = [[NSMutableArray alloc]init];

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths firstObject];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"TestPlist.plist"];

NSURL *aUrl=[NSURL fileURLWithPath:path];
NSDictionary *aDict=[[NSDictionary alloc] initWithContentsOfURL:aUrl];

NSLog(@"%@", path);

NSArray *arrayList = [NSArray arrayWithArray:[aDict objectForKey:@"Data"]];
[arrayList enumerateObjectsUsingBlock:^(id obj, NSUInteger index, BOOL *stop) {
[subjectList addObject:[obj valueForKey:@"Title"]];
[contentList addObject:[obj valueForKey:@"Content"]];

}];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [subjectList count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *simpleTableIdentifier = @"SimpleTableItem";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];

if(cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:simpleTableIdentifier];
}

cell.textLabel.text = [subjectList objectAtIndex:indexPath.row];
cell.detailTextLabel.text = [contentList objectAtIndex:indexPath.row];

return cell;

}
@end