Ios file doc.txt and so on

1. uidocumentinteractioncontroller full screen display

#import <Foundation/Foundation.h>@interface LLFileVC : UIViewController<UIDocumentInteractionControllerDelegate>{        BOOL        _isShowing;    NSURL    *_docURL;}@property (nonatomic, retain) UIDocumentInteractionController *docInteractionController;-(id)initWithURL:(NSURL*)aURL;@end

#import "LLFileVC.h"@implementation LLFileVC@synthesize docInteractionController;-(id)initWithURL:(NSURL *)aURL{    if (self=[super init]) {        _isShowing = NO;        _docURL = [aURL retain];    }    return self;}-(void)dealloc{        [docInteractionController release];    [_docURL release];        [super dealloc];}-(void)showFile{    if (_docURL) {        self.docInteractionController = [UIDocumentInteractionController interactionControllerWithURL:_docURL];        self.docInteractionController.delegate = self;        if (![self.docInteractionController presentPreviewAnimated:YES]){        }            }}-(void)viewDidAppear:(BOOL)animated{    if (!_isShowing) {        [self showFile];    }else{        [self dismissModalViewControllerAnimated:NO];    }    [super viewDidAppear:animated];}#pragma mark -#pragma mark UIDocumentInteractionControllerDelegate- (UIViewController *)documentInteractionControllerViewControllerForPreview:(UIDocumentInteractionController *)controller{    return self;}- (UIView *)documentInteractionControllerViewForPreview:(UIDocumentInteractionController *)controller{    return self.view;}- (BOOL)documentInteractionController:(UIDocumentInteractionController *)controller canPerformAction:(SEL)action{    BOOL canPerform = NO;    if (action == @selector(copy:))        canPerform = YES;    return canPerform;}- (BOOL)documentInteractionController:(UIDocumentInteractionController *)controller performAction:(SEL)action{    BOOL handled = NO;    if (action == @selector(copy:)){        handled = YES;    }    return handled;}- (CGRect)documentInteractionControllerRectForPreview:(UIDocumentInteractionController*)controller{return self.view.frame;}- (void)documentInteractionControllerWillBeginPreview:(UIDocumentInteractionController *)controller{    _isShowing = YES;}- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {if (interfaceOrientation == UIInterfaceOrientationLandscapeLeft|| interfaceOrientation == UIInterfaceOrientationLandscapeRight) {return YES;}else {return NO;}}@end

// Call full screen browsing

NSString *rootPath = [self getDocumentsPath];            NSString *filePath = [NSString stringWithFormat:@"%@/doc/%@",rootPath,_downLoadName];            LLFileVC *aLLFileVC = [[[LLFileVC alloc] initWithURL:[NSURL fileURLWithPath:filePath]] autorelease];            AppDelegate *app  = (AppDelegate*)[UIApplication sharedApplication].delegate;            [app.window.rootViewController presentModalViewController:aLLFileVC animated:NO];

Ii. uiwebview display partial view

if (!_webView) {        _webView = [[UIWebView alloc] initWithFrame:_contentView.bounds];        _webView.scalesPageToFit = YES;        [_contentView addSubview:_webView];    }        NSString *rootPath = [self getDocumentsPath];    NSString *filePath = [NSString stringWithFormat:@"%@/weekdoc/%@",rootPath,[NSString stringWithFormat:@"%@",[aDic objectForKey:@"wjm"]]];    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL fileURLWithPath:filePath]];    [_webView loadRequest:request];