iOS - 開發中加載本地word/pdf文檔說明

 

最近項目中要加載一個本地的word/pdf等文件比如《用戶隱私政策》《用戶注冊說明》,有兩種方法加載

1 > 用QLPreviewController控制器實現

   步驟 : 1 > 導入庫文件 : QuickLook.framework

            2 > 導入頭文件 : <QuickLook/QuickLook.h>

            3 > 創建我們的對象,然后設置dataSource

2 > 用webView來加載word文件

 

以上兩種方法都先把本地word/pdf文件拖入當我們的項目中

 

有時候會出現path為nil,看看是不是沒加進Build Phases-Copy Bundle Resources資源

 

/*
 方法1使用:
 1、導入庫文件:QuickLook.framework
 2、導入頭文件:<QuickLook/QuickLook.h>
 */
#import <QuickLook/QuickLook.h>

@interface ViewController ()<QLPreviewControllerDataSource,UIWebViewDelegate>

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // 方法1:用QLPreviewController控件實現
    [self QLPreviewControllerLoad];
    
    // 方法2:用WebView的方法加載word
    [self webViewLoad];
    
}

#pragma mark -- QLPreviewController
- (void)QLPreviewControllerLoad {
    self.view.backgroundColor = [UIColor lightGrayColor];
    QLPreviewController *qlpVC = [[QLPreviewController alloc] init];
    qlpVC.dataSource = self;
    [self presentViewController:qlpVC animated:YES completion:nil];
}

- (NSInteger)numberOfPreviewItemsInPreviewController:(QLPreviewController *)controller {
    return 1;//需要顯示文件的個數
}
- (id<QLPreviewItem>)previewController:(QLPreviewController *)controller previewItemAtIndex:(NSInteger)index {
    NSString *path = [[NSBundle mainBundle] pathForResource:@"順道用戶隱私政策.docx" ofType:nil];
    NSURL *url = [NSURL fileURLWithPath:path];
    return url;
}

#pragma mark -- WebView
- (void)webViewLoad {
    NSString *path = [[NSBundle mainBundle] pathForResource:@"順道用戶隱私政策" ofType:@"docx"];
    NSURL *url = [NSURL fileURLWithPath:path];
    UIWebView *webView = [[UIWebView alloc] init];
    webView.frame = CGRectMake(0, 0, kScreen_width, kScreen_height);
    webView.backgroundColor = [UIColor whiteColor];
    [webView loadRequest:[NSURLRequest requestWithURL:url]];
    [webView sizeToFit];
    webView.scalesPageToFit = YES;
    webView.delegate = self;
    [self.view addSubview:webView];
    
}

- (void)webViewDidFinishLoad:(UIWebView *)webView {
    NSLog(@"webViewDidFinishLoad");
    NSString *javascript = [NSString stringWithFormat:@"var script = document.createElement('script');"
                            "script.type = 'text/javascript';"
                            "script.text = \"function ResizeImages() { "
                            "var myimg;"
                            "var maxwidth=%f;" //縮放系數
                            "for(i=0;i <document.images.length;i++){"
                            "myimg = document.images[i];"
                            "if(myimg.width > maxwidth){"
                            "var scale = myimg.width/myimg.height;"
                            "myimg.width = maxwidth;"
                            "myimg.height = maxwidth/scale;"
                            "}"
                            "}"
                            "}\";"
                            "document.getElementsByTagName('head')[0].appendChild(script);",CGRectGetWidth(webView.frame)];
    [webView stringByEvaluatingJavaScriptFromString:javascript];
    
    //添加調用JS執行的語句
    [webView stringByEvaluatingJavaScriptFromString:@"ResizeImages();"];
}