如何調用插件主體類以外的類的方法

Question

我創建了一個插件，並且有一些名爲PluginPrincipalClass，ClassOne和ClassTwo的3個類。在我的類中有以下代碼片段。

#import <Cocoa/Cocoa.h> 

@interface PluginPrincipalClass : NSObject 

@end 


#import "PluginPrincipalClass.h" 

@implementation PluginPrincipalClass 


- (NSInteger)getDownloadPercentage 
{ 
    NSLog(@"getDownloadPercentage"); 
    return 10; 
} 

- (void)downloadSoftwareUpdate 
{ 
    NSLog(@"downloadSoftwareUpdate"); 
} 

@end 


#import <Cocoa/Cocoa.h> 

@interface ClassOne : NSObject 

@end 


#import "ClassOneh" 

@implementation ClassOne 


- (void)ClassOneMethod 
{ 
    NSLog(@"ClassOneMethod"); 

}  
@end 


#import <Cocoa/Cocoa.h> 

@interface ClassTwo : NSObject 

@end 


#import "ClassTwo.h" 

@implementation ClassTwo 


- (void)ClassTwoMethod 
{ 
    NSLog(@"ClassTwoMethod"); 

} 

@end 

在我BaseApplication加載插件，並呼籲主要類我有下面的代碼片段

NSString *zStrPlugInsPath = [[NSBundle mainBundle] builtInPlugInsPath]; 
NSArray *zAryBundlePaths = [NSBundle pathsForResourcesOfType:@"plugin" 
               inDirectory:zStrPlugInsPath]; 
NSString * zStrPathToPlugin = [zAryBundlePaths lastObject]; 
NSBundle *znsBundlePlugin = [NSBundle bundleWithPath:zStrPathToPlugin]; 

// instantiate the principal class and call the method 
Class zPrincipalClass = [znsBundlePlugin principalClass]; 
id zPrincipalClassObj = [[zPrincipalClass alloc]init]; 


NSInteger downloadPer = [zPrincipalClassObj getDownloadPercentage]; 

NSLog(@"downloadPer = %ld",downloadPer); 

[zPrincipalClassObj downloadSoftwareUpdate]; 

這是工作fine.If我想打電話給ClassOne或ClassTwo的方法。如何從我的基本應用程序實例化和調用這些方法。是否類似於創建對象ClassOne並使用該對象調用方法？

Answer 1

我（如果我正確地理解你的問題），要使用一個NSBundle的classNamed:方法:)

像這樣：

Class zSecondaryClass = [znsBundlePlugin classNamed: @"StudentClass"];