NSMutableArray *app = [NSMutableArray array];

    //获得私有的类

    Class LSApplicationWorkspace_class = objc_getClass("LSApplicationWorkspace");

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

    //获得所有的正在安装的app,得到的是个数组

    NSArray *apps = [workspace performSelector:@selector(placeholderApplications)];

    Class LSApplicationProxy_class = objc_getClass("LSApplicationProxy");

    //遍历数组，根据app的名称判断哪个app正在安装

    for (int i = ; i < apps.count; i++) {

        NSObject *temp = apps[i];

        if ([temp isKindOfClass:LSApplicationProxy_class]) {

            NSString *appName = [temp performSelector:NSSelectorFromString(@"localizedName")];

            BOOL b  = [temp performSelector:NSSelectorFromString(@"isPlaceholder")];

            NSLog(@"名称：%@++++%d",appName,b);

        }

    }