QLPreviewController用法

从IOS4.0后，apple推出新的文件预览控件：QLPreveiewController,已经支持pdf文件阅读。

用法：

1.实现QLPreviewControllerDataSource

 

#import <Foundation/Foundation.h>
#import <QuickLook/QuickLook.h>


@interface PreviewDataSource : NSObject<QLPreviewControllerDataSource> {
    NSString *path;
}

@property (nonatomic, assign) NSString *path;

@end
#import "PreviewDataSource.h"


@implementation PreviewDataSource

@synthesize path;


- (NSInteger) numberOfPreviewItemsInPreviewController: (QLPreviewController *) controller
{
    return 1;
}


- (id <QLPreviewItem>)previewController: (QLPreviewController *)controller previewItemAtIndex:(NSInteger)index
{

    return [NSURL fileURLWithPath:path];
}



- (void)dealloc {
    [path release];
    [super dealloc];
}
@end

 2.调用方法：

 

Cpp代码  

QLPreviewController *previewoCntroller = [[[QLPreviewController alloc] init] autorelease];

                   PreviewDataSource *dataSource = [[[PreviewDataSource alloc]init] autorelease];
                   dataSource.path=[[NSString alloc] initWithString:appFile];
                   previewoCntroller.dataSource=dataSource;
                   [app.nav pushViewController: previewoCntroller animated:YES];
                   [previewoCntroller setTitle:fileName];
                   previewoCntroller.navigationItem.rightBarButtonItem=nil;

原文地址：http://wanggp.iteye.com/blog/1129059