在UIWebView中固定已保存的备注

Question

我有UIWebView用于显示HTML文章。当用户触摸UIWebView中的某个区域时，将显示UIMenuController。然后用户选择它显示UITextView的注释按钮，然后用户就可以编写一些文本，之后用户可以将文本存储到那个触摸区域，如Documents by Readdle app。我创建了最多写文本并保存到数据库。保存文本后，我需要在触摸区域上显示按钮。如何启用按钮？

UIWEbView显示文章页面：

在显示longpress UIMenuController后，然后选择备注

选择笔记后，会出现UITextView以写入一些笔记，然后单击“完成”按钮，UItextView将删除，然后将显示UIWebView。

我需要在uiwebview longpress位置显示小按钮或图标。在UIWebView上方，位置为Commences。在接近开始的文本中，我需要在单击完成按钮

后显示小图标

- (void)viewDidLoad
{
    [wbCont loadHTMLString:webString baseURL:nil];
    wbCont.userInteractionEnabled=YES;
    [self.view addSubview:wbCont];

    menuItem = [[UIMenuItem alloc] initWithTitle:@"Notes" action:@selector(note:)];
    [items addObject:menuItem];

}

在longpress UIMenuItem打开并单击note后再打开UItextView

- (void)note:(id)sender{

    NSLog(@"Note");

    self.navigationController.navigationBarHidden=YES;

    txtview = [[UITextView alloc]initWithFrame:CGRectMake(0,0,320,568)];

    txtview.font = [UIFont fontWithName:@"Helvetica" size:12];
    txtview.font = [UIFont boldSystemFontOfSize:12];
    txtview.backgroundColor = [UIColor whiteColor];
    txtview.scrollEnabled = YES;
    txtview.pagingEnabled = YES;
    txtview.editable = YES;

    [self.view addSubview:txtview];

    button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button addTarget:self
               action:@selector(click:)
    forControlEvents:UIControlEventTouchDown];
    [button setTitle:@"Done" forState:UIControlStateNormal];
    button.frame = CGRectMake(240.0, 20.0, 60.0, 40.0);
    [txtview addSubview:button];

}

然后点击完成按钮我保存文字：

-(void)click:(id)sender{

    NSLog(@"done");

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];

    // NSString *documentsDirectory = [paths objectAtIndex:1];

    NSString *path = [documentsDirectory stringByAppendingPathComponent:@"ohs.sqlite"];
    NSLog(@"filepath %@",path);


    if (sqlite3_open([path UTF8String], &database) == SQLITE_OK) {

        const char *sql = [[NSString stringWithFormat:@"SELECT textnotes FROM textnote where textnote = '%@'",txtview.text] cStringUsingEncoding:NSUTF8StringEncoding];

        NSLog(@"sql is %s",sql);

        BOOL favExist = false;

        sqlite3_stmt *statement, *addStmt;

        if (sqlite3_prepare_v2(database, sql, -1, &statement, NULL) == SQLITE_OK) {
            // We "step" through the results - once for each row.
            while (sqlite3_step(statement) == SQLITE_ROW) {

            favExist = true;
            }
        }

        if(!favExist){

            const char *sqlInsert = [[NSString stringWithFormat:@"insert into textnote (textnotes ) values ('%@')", txtview.text] cStringUsingEncoding:NSUTF8StringEncoding];

            NSLog(@"sql insert is %s",sqlInsert);

            // [catID release];

            if(sqlite3_prepare_v2(database, sqlInsert, -1, &addStmt, NULL) != SQLITE_OK)
                NSAssert1(0, @"Error while creating add statement. '%s'", sqlite3_errmsg(database));

            if(SQLITE_DONE != sqlite3_step(addStmt))
                NSAssert1(0, @"Error while inserting data. '%s'", sqlite3_errmsg(database));


       }else {

        }

    }

    [txtview removeFromSuperview];
    [button removeFromSuperview];

  }

保存文本后，我删除了textview，按钮。然后将显示UIWebView。 UIwebView tocuh定位如何显示用于通过readdle app保存文本的按钮。