先导入#import <objc/runtime.h>头文件

//    Class LSApplicationWorkspace_class = objc_getClass("LSApplicationWorkspace");

//    NSObject* workspace = [LSApplicationWorkspace_class performSelector:@selector(defaultWorkspace)];

//

//    NSArray *arr = [workspace performSelector:@selector(allApplications)];

//

//    for (id obj in arr) {

//        NSLog(@"obj:%@", obj);

//    }

//    NSLog(@"apps: %@", [workspace performSelector:@selector(allApplications)]);

    Class LSApplicationWorkspace_class = objc_getClass("LSApplicationWorkspace");

    NSObject* workspace = [LSApplicationWorkspace_class performSelector:@selector(defaultWorkspace)];

    NSLog(@"apps: %@", [workspace performSelector:@selector(allApplications)]);