iOS：截图保存到本地并保存到相册（最新）

之前只写过安卓保存图片到相册，iOS和安卓目前对于保存到相册的操作是很类似的，只不过是和Unity的交互方式是不一样的，废话不多说，下面上代码。文章源自大腿Plus-https://www.shijunzh.com/archives/1737

首先是头文件文章源自大腿Plus-https://www.shijunzh.com/archives/1737

// [!] important set UnityFramework in Target Membership for this file
// [!]           and set Public header visibility

#import <Foundation/Foundation.h>

// NativeCallsProtocol defines protocol with methods you want to be called from managed
@protocol NativeCallsProtocol
@required
- (void) showHostMainWindow:(NSString*)msg;
- (NSString*) getAppData:(NSString*)key;
@end

__attribute__ ((visibility("default")))
@interface FrameworkLibAPI : NSObject
// call it any time after UnityFrameworkLoad to set object implementing NativeCallsProtocol methods
+(void) registerAPIforNativeCalls:(id<NativeCallsProtocol>) aApi;

@end

@interface PhotoManager : NSObject
- ( void ) imageSaved: ( UIImage *) image didFinishSavingWithError:( NSError *)error 
    contextInfo: ( void *) contextInfo;
@end

接着是.mm文件文章源自大腿Plus-https://www.shijunzh.com/archives/1737

#import <Foundation/Foundation.h>
#import "NativeCallProxy.h"


@implementation FrameworkLibAPI

id<NativeCallsProtocol> api = NULL;
+(void) registerAPIforNativeCalls:(id<NativeCallsProtocol>) aApi
{
    api = aApi;
}

@end

@implementation PhotoManager
- ( void ) imageSaved: ( UIImage *) image didFinishSavingWithError:( NSError *)error
          contextInfo: ( void *) contextInfo
{
    NSLog(@"保存结束");
    if (error != nil) {
        NSLog(@"有错误");
    }
}
@end

extern "C" {
    //退出unity显示原生界面
    void showHostMainWindow(const char* msg) {
        UnityPause(true);
        return [api showHostMainWindow:[NSString stringWithUTF8String:msg]];
    }
    //获取原生界面数据
    const char* getAppData(const char* key) {
        NSString* data = [api getAppData:[NSString stringWithUTF8String:key]];
        return strdup([data cStringUsingEncoding:NSUTF8StringEncoding]);
    }
    void savePhoto(char *readAddr)
    {
        NSString *strReadAddr = [NSString stringWithUTF8String:readAddr];
        UIImage *img = [UIImage imageWithContentsOfFile:strReadAddr];
        NSLog([NSString stringWithFormat:@"w:%f, h:%f", img.size.width, img.size.height]);
        PhotoManager *instance = [PhotoManager alloc];
        UIImageWriteToSavedPhotosAlbum(img, instance,
                                    @selector(imageSaved:didFinishSavingWithError:contextInfo:), nil);
    }
}

iOS的这个工具类也会持续更新。敬请期待！文章源自大腿Plus-https://www.shijunzh.com/archives/1737