Objective-C:如何让应用程序保持在停靠状态？

Question

我试图将我的应用程序保留在停靠位置，但我无法做到这一点。

我想怎么做？

@interface UserDefaultsHelper : NSUserDefaults

- (BOOL)addApplicationToDock:(NSString *)path;

- (BOOL)removeApplicationFromDock:(NSString *)name;

@end


@implementation UserDefaultsHelper

- (BOOL)addApplicationToDock:(NSString *)path {
    NSDictionary *domain = [self persistentDomainForName:@"com.apple.dock"];
    NSArray *apps = [domain objectForKey:@"persistent-apps"];
    NSArray *matchingApps = [apps filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"%K CONTAINS %@", @"tile-data.file-data._CFURLString", path]];
    if ([matchingApps count] == 0) {
        NSMutableDictionary *newDomain = [domain mutableCopy];
        NSMutableArray *newApps = [apps mutableCopy];
        NSDictionary *app = [NSDictionary dictionaryWithObject:[NSDictionary dictionaryWithObject:[NSDictionary dictionaryWithObjectsAndKeys:path, @"_CFURLString", [NSNumber numberWithInt:0], @"_CFURLStringType", nil] forKey:@"file-data"] forKey:@"tile-data"];
        [newApps addObject:app];
        [newDomain setObject:newApps forKey:@"persistent-apps"];
        [self setPersistentDomain:newDomain forName:@"com.apple.dock"];
        return [self synchronize];
    }
    return NO;
}

- (BOOL)removeApplicationFromDock:(NSString *)name {
    NSDictionary *domain = [self persistentDomainForName:@"com.apple.dock"];
    NSArray *apps = [domain objectForKey:@"persistent-apps"];
    NSArray *newApps = [apps filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"not %K CONTAINS %@", @"tile-data.file-data._CFURLString", name]];
    if (![apps isEqualToArray:newApps]) {
        NSMutableDictionary *newDomain = [domain mutableCopy];
        [newDomain setObject:newApps forKey:@"persistent-apps"];
        [self setPersistentDomain:newDomain forName:@"com.apple.dock"];
        return [self synchronize];
    }
    return NO;
}

@end

我从这里找到了上面的代码。 Code Source

上面的代码正在编译并运行，但是它正在将应用程序添加到应用程序的扩展坞中。

我是这里的新手。请对我宽容一点，因为我没有操作系统水平的知识。

提前非常感谢您的帮助和关注。

Answer 1

所提供的代码是正确的，唯一的问题是扩展坞没有刷新。所以我们只需要刷新DOCK

为了刷新扩展坞，我从 obj-c 调用终端命令

终端命令 killall dock

    ....code...
    [self runCommand:@"killall Dock"];   
} 

-(NSString*)runCommand:(NSString*)commandToRun;
{
    NSTask *task;
    task = [[NSTask alloc] init];
    [task setLaunchPath: @"/bin/sh"];

    NSArray *arguments = [NSArray arrayWithObjects:
                          @"-c" ,
                          [NSString stringWithFormat:@"%@", commandToRun],
                          nil];
    NSLog(@"run command: %@",commandToRun);
    [task setArguments: arguments];

    NSPipe *pipe;
    pipe = [NSPipe pipe];
    [task setStandardOutput: pipe];

    NSFileHandle *file;
    file = [pipe fileHandleForReading];

    [task launch];

    NSData *data;
    data = [file readDataToEndOfFile];

    NSString *output;
    output = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
    return output;
}