点击“在Instagram中打开"时崩溃在使用UIDocumentInteractionController时 [英] Crash wen tapping "Open in Instagram" while using UIDocumentInteractionController

问题描述

我有以下课程:

.h文件:

#import <Foundation/Foundation.h>

@interface CHTInstagramSharer : NSObject<UIDocumentInteractionControllerDelegate>
@property (nonatomic, retain) UIDocumentInteractionController *dic;
-(void) sharePic:(UIImage *)image;
@end

.m文件

#import "CHTInstagramSharer.h"
#import <UIKit/UIKit.h>
#import "BaseController.h"

@implementation CHTInstagramSharer


-(void) sharePic:(UIImage *)image{    

    NSString * jpgPath = [Utils saveImage:image toFile:@"cover.igo"];
    NSURL *url = [NSURL fileURLWithPath:jpgPath];
    self.dic = [UIDocumentInteractionController interactionControllerWithURL: url];
    self.dic.UTI = @"com.instagram.exclusivegram";
    self.dic.delegate = self;
    self.dic.annotation = [NSDictionary dictionaryWithObject:@"Caption Test" forKey:@"InstagramCaption"];
    [self.dic presentOpenInMenuFromRect:CGRectMake(0, 0, 320, 44)    inView:[BaseController sharedInstance].view animated: YES ];
}
@end

它为控制器提供了在Instagram中打开"选项，但是当我点击该按钮时，该应用程序将崩溃.

It presents the controller with the option "Open in Instagram", but when I tap on that, the app crashes.

知道为什么吗?

补充信息，当我在调试器中查看url时，会得到: 文件://localhost/var/mobile/Applications/53435781-3BAB-4B02-A80C-FC088F696AE8/Library/Caches/cover.igo

Complementary information, when I look at the url in the debugger, I get: file://localhost/var/mobile/Applications/53435781-3BAB-4B02-A80C-FC088F696AE8/Library/Caches/cover.igo

当我查看堆栈跟踪时，崩溃似乎发生在[_UIOpenWithAppActivity performActivity]中.

The crash seems to happen in [_UIOpenWithAppActivity performActivity] when I look in the stack trace.

推荐答案

似乎您没有保留文档控制器.我使用Instagram钩子是这样的:

It looks like you are not retaining the document controller. I use the Instagram hook like this:

为ARC修改

- (void)sharePic:(UIImage *)image {

    NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:@"Image.ig"];
    NSData *imageData = UIImageJPEGRepresentation(image, 0.8);
    [imageData writeToFile:savedImagePath atomically:YES];
    NSURL *imageUrl = [NSURL fileURLWithPath:savedImagePath];

    UIDocumentInteractionController *docController = [UIDocumentInteractionController interactionControllerWithURL:imageUrl];
    [docController retain];
    docController.UTI = @"com.instagram.exclusivegram";
    docController.delegate = self;
    docController.annotation = [NSDictionary dictionaryWithObject:@"Caption Test" forKey:@"InstagramCaption"];
    [docController presentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];
    docController = nil;
}

让我知道这是否有帮助.

Let me know if this helps.

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