こんにちは、私はこのオブジェクト PlistManager を実装して、プロジェクトで plist を読み書きします。 ]) 以前に入力したデータを読み取ることができます。
ポイントは、xcode でシミュレーションを停止して再度実行すると、plist が空になることです。なんで?
@interface ReadWritePlist : NSObject
+(void)writeToPlist:(NSString*)filePlist dic:(NSDictionary*)dic;
+ (NSMutableDictionary *)readPlist:(NSString*)filePlist;
@end
@implementation ReadWritePlist
+ (void)writeToPlist:(NSString*)filePlist dic:(NSDictionary*)dic
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
[dic writeToFile:[documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",filePlist]] atomically:YES];
}
+ (NSMutableDictionary *)readPlist:(NSString*)filePlist {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [[documentsDirectory stringByAppendingPathComponent:filePlist] stringByAppendingPathExtension:@"plist"];
NSMutableDictionary *dic=[[NSMutableDictionary alloc] initWithContentsOfFile:filePath];
return dic;
}
解決した
読み取り/書き込み plist のこれらの新しいメソッドを見つけたところ、動作しています。appdelegate (didFinishLaunchingWithOptions) 内に「initializeFileDic」メソッドを追加する必要がありました。
@implementation PlistManager
+ (NSMutableDictionary *)readPlist:(NSString*)filePlist {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [[documentsDirectory stringByAppendingPathComponent:filePlist] stringByAppendingPathExtension:@"plist"];
NSMutableDictionary *dic=[[NSMutableDictionary alloc] initWithContentsOfFile:filePath];
return dic;
}
+ (void)writeToPlist:(NSString*)filePlist dic:(NSDictionary*)dic
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
if ([dic writeToFile:[documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",filePlist]] atomically:YES]) {
NSLog(@"Ok done!");
}
else{
NSLog(@"Noo not done!");
}
}
+ (void)initializeFileDic:(NSString*)FileNameExt
{
NSString *path = [[NSBundle mainBundle] bundlePath];
NSString *startPath = [[path stringByAppendingPathComponent:FileNameExt]stringByAppendingPathExtension:@"plist"] ;
NSString *documentsDirectoryPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *filePath = [[documentsDirectoryPath stringByAppendingPathComponent:FileNameExt]stringByAppendingPathExtension:@"plist"];
NSLog(@"%@ \n,\n %@ ",startPath,filePath);
if([NSDictionary dictionaryWithContentsOfFile: startPath]){
NSLog(@"File %@ exists",filePath);
}
if (![[NSFileManager defaultManager] fileExistsAtPath:filePath]){
if([[NSDictionary dictionaryWithContentsOfFile:startPath] writeToFile:filePath atomically:NO])
NSLog(@"File copied inside App DocumentsDirectory\n\n");
else
NSLog(@"Error while trying to copy into DocumentsDirectory\n\n");
}
}
@end
誰が何が間違っていたのか説明できますか? ありがとう