Question

我正在使用swift for iPhone创建一个Todo应用程序。我希望tableview在tableview中显示任务的名称和时间。 Textlabel显示任务的正确名称，但detailTextLabel只显示详细信息，而不显示时间。

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {      
   var cell = tableView.dequeueReusableCell(withIdentifier: "cell") as UITableViewCell!   
    let task = tasks[indexPath.row]        

    if task.done {

        cell?.textLabel!.text = "‼️\(task.name!)"
        task.time = cell!.detailTextLabel!.text
    } else {            
        cell?.textLabel!.text = "\(task.name!)"
        task.time = cell!.detailTextLabel!.text
    }        
    return cell!
}

Answer 1

您对detailTextLabel的分配是向后的。

    function renderMediaUploader() {
    'use strict';

    var file_frame, image_data;

    /**
     * If an instance of file_frame already exists, then we can open it
     * rather than creating a new instance.
     */
    if ( undefined !== file_frame ) {

        file_frame.open();
        return;

    }

    /**
     * If we're this far, then an instance does not exist, so we need to
     * create our own.
     *
     * Here, use the wp.media library to define the settings of the Media
     * Uploader. We're opting to use the 'post' frame which is a template
     * defined in WordPress core and are initializing the file frame
     * with the 'insert' state.
     *
     * We're also not allowing the user to select more than one image.
     */
    file_frame = wp.media.frames.file_frame = wp.media({
         title: 'Select or Upload Media Of Your Chosen Persuasion',
          button: {
            text: 'Use this media'
          },
        multiple: true
    });

    //add items from thickbox to table
    file_frame.on( 'select', function() {

        var attachment = file_frame.state().get('selection').toJSON();

        jQuery.each(attachment, function(i, val){
            jQuery('table').show();
            jQuery('table tbody').append('<tr class="table_row"><td class="col-sm-2"><img class="img-responsive" src="'+val.url+'"></td><td class="col-sm-8"><input style=" display: block;" type="text" name="entry[url][]" value="'+ val.url +'"></td></tr>');
        });


    });

    // Now display the actual file_frame
    file_frame.open();

}

(function( $ ) {
    'use strict';

    $(function() {
        $( '#set-footer-thumbnail' ).on( 'click', function( evt ) {

            // Stop the anchor's default behavior
            evt.preventDefault();

            // Display the media uploader
            renderMediaUploader();

        });

    });

})( jQuery );

Answer 2

您实际上从未将细节标签文本设置为任何内容。您需要使用以下内容进行设置：

cell?.detailTextLabel!.text = task.time.longStyleDateString

以及日期延期：

extension Date { var longStyleDateString: String { let formatter = DateFormatter() formatter.dateStyle = .long return formatter.string(from: self) } }

tableview in swift ios detailTextLabel

2 个答案: