mac 开发： 打开电脑内安装应用和打开mac 浏览器

    NSTask *task = [[NSTask alloc] init];
    //应用路径
    [task setLaunchPath:@"/Applications/ImageOptim.app/Contents/MacOS/ImageOptim"];
    if (task.standardError) {
        //打开mac浏览器
        [[NSWorkspace sharedWorkspace] openURL:[NSURL URLWithString:@"https://imageoptim/mac"]];
    }else {
        [task launch];
    }