小编Rob*_*Rob的帖子

当使用LeftBarItems和RightBarItems时,我遇到了过多的UIBarButtonItem填充/间距(见下图).UIBarButtonItems上使用的图标不包含额外的填充.所以我想知道是什么导致了这个？

我正在尝试在VS2010中创建一个后期构建文件复制步骤,它在嵌入空格时处理路径宏.我试过用双引号括起复制命令,但是如果$(SolutionDir)包含空格则调用copy时会出错.错误消息中的回显命令行不显示双引号.

copy "$(SolutionDir)$(Configuration)\*" "$(TargetDir)"

我也单独尝试\",""但这两个导致2字符转义序列出现在echoed命令行？如何在构建步骤中正确地逃避双引号？

Nimbus通常看起来很棒,但对于某些颜色组合,结果是非最佳的.在我的情况下,a的背景JPopupMenu不适合,这就是我想手动设置的原因.

我在Java 7上,有趣的是,Nimbus完全忽略了UIManager(像PopupMenu.background)中某些属性的设置.所以我唯一的选择是创建JPopupMenu该覆盖的子类paintComponent(...).我知道,那很讨厌,但至少它起作用了.

但是,如果你添加一个JMenu到另一个菜单,它嵌入它自己的实例,JPopupMenu我无法弄清楚如何用我自己的子类替换它.

即使PopupMenuUI为嵌入式实例分配自己也没有带来任何结果.如果直接从JPopupMenuoverriden paint(...)方法继承而被调用,但是,无论我做了什么,都没有绘制.如果继承的javax.swing.plaf.synth.SynthPopupMenuUI paint甚至没有被调用,结果就是我根本没有设置自己PopupMenuUI.

所以简单的问题是:如何JPopupMenu使用Nimbus作为L&F,在Java 7上调整一个或者(如果这更容易)的背景颜色？

编辑:代码示例

看一下下面的代码和结果:

public static void main(final String[] args) {
    try {
        UIManager.setLookAndFeel(NimbusLookAndFeel.class.getCanonicalName());
        UIManager.getLookAndFeelDefaults().put("PopupMenu.background", Color.GREEN);
        UIManager.getLookAndFeelDefaults().put("Panel.background", Color.RED);
        UIManager.getLookAndFeelDefaults().put("List.background", Color.BLUE);
    } catch (ClassNotFoundException | InstantiationException
            | IllegalAccessException | UnsupportedLookAndFeelException e) {
        e.printStackTrace();
    }
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(200,200);

    JPanel panel = new JPanel(new BorderLayout());
    panel.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
    JList …

我正在为Windows 8构建一个metro风格的应用程序,我有一个zip文件,我从Web服务下载,我想提取它.

我已经看过压缩和解压缩的示例,但是需要压缩/解压缩一个文件.我有一个完整的目录结构,我需要提取.

这是我到目前为止:

var appData = ApplicationData.Current;
var file = await appData.LocalFolder.GetItemAsync("thezip.zip") as StorageFile;
var decompressedFile = await ApplicationData.Current.LocalFolder.CreateFileAsync("tempFileName", CreationCollisionOption.GenerateUniqueName);
using (var decompressor = new Decompressor(await file.OpenSequentialReadAsync()))
using (var decompressedOutput = await decompressedFile.OpenAsync(FileAccessMode.ReadWrite))
{
    var bytesDecompressed = await RandomAccessStream.CopyAsync(decompressor, decompressedOutput);
}

但这并不好,bytesDecompressed变量总是零大小,但zip文件是1.2MB

这里的任何帮助将不胜感激.

编辑:回答,谢谢 Mahantesh

这是解压缩文件的代码:

private async void UnZipFile()
{
    var folder = ApplicationData.Current.LocalFolder;

    using (var zipStream = await folder.OpenStreamForReadAsync("thezip.zip"))
    {
        using (MemoryStream zipMemoryStream = new MemoryStream((int)zipStream.Length))
        {
            await zipStream.CopyToAsync(zipMemoryStream);

            using (var archive = new ZipArchive(zipMemoryStream, …

我知道此类错误之前已多次提出,但我没有找到我的错误的解决方案.我正在使用xcode 4.0.我下载了ASIHTTPRequest zip和复制的classes文件夹以及两个'Reachability'文件.编译后,它给了我奇怪的错误,这是我无法弄清楚的.下面我为架构i386复制了未定义符号的错误文本.

Ld /Users/svp/Library/Developer/Xcode/DerivedData/Manual_BeforePres2-fahkeiivemkgpubswgvzglvndszw/Build/Products/Debug-iphonesimulator/Manual.app/Manual normal i386
cd "/Users/svp/Desktop/Manual nav before pres 2"
setenv MACOSX_DEPLOYMENT_TARGET 10.6
setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/llvm-gcc-4.2 -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk -L/Users/svp/Library/Developer/Xcode/DerivedData/Manual_BeforePres2-fahkeiivemkgpubswgvzglvndszw/Build/Products/Debug-iphonesimulator -F/Users/svp/Library/Developer/Xcode/DerivedData/Manual_BeforePres2-fahkeiivemkgpubswgvzglvndszw/Build/Products/Debug-iphonesimulator -filelist /Users/svp/Library/Developer/Xcode/DerivedData/Manual_BeforePres2-fahkeiivemkgpubswgvzglvndszw/Build/Intermediates/Manual_BeforePres2.build/Debug-iphonesimulator/Manual.build/Objects-normal/i386/Manual.LinkFileList -mmacosx-version-min=10.6 -Xlinker -objc_abi_version -Xlinker 2 -lz -framework SystemConfiguration -framework CFNetwork -framework UIKit -framework Foundation -framework CoreGraphics -o /Users/svp/Library/Developer/Xcode/DerivedData/Manual_BeforePres2-fahkeiivemkgpubswgvzglvndszw/Build/Products/Debug-iphonesimulator/Manual.app/Manual

 Undefined symbols for architecture i386:
"_UTTypeCreatePreferredIdentifierForTag", referenced from:
  +[ASIHTTPRequest mimeTypeForFileAtPath:] in ASIHTTPRequest.o
"_UTTypeCopyPreferredTagWithClass", referenced from:
  +[ASIHTTPRequest mimeTypeForFileAtPath:] in ASIHTTPRequest.o
"_kUTTagClassFilenameExtension", referenced from:
  +[ASIHTTPRequest mimeTypeForFileAtPath:] in ASIHTTPRequest.o
"_kUTTagClassMIMEType", referenced from:
  +[ASIHTTPRequest mimeTypeForFileAtPath:] in ASIHTTPRequest.o
ld: …

我有一个包含UILabel和UIImageView的自定义UIView.如何使我的UIView可点击？我想在用户开始按下UIView的任何时候改变UIView的背景.当用户抬起按钮时,颜色应该会改变.我还需要能够处理click事件.

在我的数据库中,我将行"已发布"设置为时间戳,但在尝试转换/格式化时我收到此通知:

Notice: A non well formed numeric value encountered

码:

$posted = date('d/m/Y H:i:s', $row['posted']);
    echo $posted;

我究竟做错了什么？

我正在使用C3P0和MS SQL JDBC 4驱动程序在数据库消失时自动故障转移到新的数据库镜像.如果它首先连接到主体数据库,则故障转移将起作用,并且无缝切换到镜像数据库.但是,如果主应用程序在应用程序启动时关闭,并且镜像数据库可用于连接(使用MSSQL Studio进行测试),则应用程序无法启动并无法连接到备份镜像.

这是连接URL:

jdbc:sqlserver://PRINCIPALDB;databaseName=app_space;port=99999;failoverPartner=MIRRORDB

我有c3p0.testConnectionOnCheckout和c3p0.preferredTestQuery设置,并c3p0.acquireRetryAttempts没有设置(使用默认值30).

当主体关闭时,为什么它最初不会连接到镜像DB？我们需要这个,因为如果电源关闭或主要数据库关闭,并且应用服务器需要回收,那么故障转移将无济于事.

参考:

http://www.mchange.com/projects/c3p0/#configuring_recovery

使用数据库镜像(JDBC)(MSDN在其URL中使用未转义的括号!)http://msdn.microsoft.com/en-US/library/aa342332 (v=sql.90 )

以下是该应用的一些日志.

<14>[APP]: INFO 20 Jul 2012 12:21:21,982 [main] net.sf.hibernate.connection.C3P0ConnectionProvider "C3P0 using driver: com.microsoft.sqlserver.jdbc.SQLServerDriver at URL: jdbc:sqlserver://PRINCIPAL;databaseName=APP_space;port=9999;failoverPartner=MIRRORDB"    
<14>[APP]: INFO 20 Jul 2012 12:21:21,982 [main] net.sf.hibernate.connection.C3P0ConnectionProvider "Connection properties: {user=USERNAME, password=PASSWORD}"    
<14>[APP]: INFO 20 Jul 2012 12:21:22,435 [main] net.sf.hibernate.transaction.TransactionFactoryFactory "Transaction strategy: net.sf.hibernate.transaction.JDBCTransactionFactory"
<14>[APP]: INFO 20 Jul 2012 12:21:22,450 [main] net.sf.hibernate.transaction.TransactionManagerLookupFactory "No TransactionManagerLookup configured (in JTA environment, use of process level read-write …

我正在创建一个应用程序,我试图获取当前触摸点的颜色,如果这个点不是黑色,那么它将运行迭代/递归并将所有非黑点存储在数组中.我正在使用此函数进行迭代:

-(void)function:(CGFloat)positiveX:(CGFloat)positiveY:(CGFloat)negativeX:(CGFloat)negativeY
{
    if (canDoPositiveX == YES)
    {
        //Checking in positive
        if (![[NSString stringWithFormat:@"%@",[self colorOfPoint:CGPointMake(positiveX, positiveY)]] isEqualToString:@"UIDeviceRGBColorSpace 0 0 0 1"])
        {
            CGPoint point = CGPointMake(positiveX, positiveY);
            [array addObject:[NSValue valueWithCGPoint:point]];
            [self function:positiveX+1 :positiveY :negativeX :negativeY];
        }
        else
        {
            canDoPositiveX = NO;
        }
    }

    if (canDoPositiveY == YES)
    {
        //Checking in positive
        if (![[NSString stringWithFormat:@"%@",[self colorOfPoint:CGPointMake(positiveX, positiveY)]] isEqualToString:@"UIDeviceRGBColorSpace 0 0 0 0"])
        {
            CGPoint point = CGPointMake(positiveX, positiveY);
            [array addObject:[NSValue valueWithCGPoint:point]];
            [self function:positiveX :positiveY+1 :negativeX :negativeY];
        }
        else
        {
            canDoPositiveY = …

如标题中所述.我有两个JPanels一个在另一个上面使用a BorderLayout().

import java.awt.*;
import javax.swing.*;

public class myForm(){
    public static void main(String[] args) {       
        JFrame myFrame = new JFrame("SingSong");
        myFrame.setLocation(100,100);
        myFrame.setSize(new Dimension(1024,800));
        myFrame.setLayout(new BorderLayout());
        JPanel jp = new JPanel();
        jp.setBackground(new Color(0x00FF00FF));
        JPanel jp2 = new JPanel(new BorderLayout());
        jp2.setBackground(new Color(0x00000000));

        jp.setPreferredSize(new Dimension(100,400));
        jp2.setPreferredSize(new Dimension(100,400));
        jp2.setLocation(0, 512);

        myFrame.add(jp2, BorderLayout.SOUTH);
        myFrame.add(jp, BorderLayout.NORTH);
    }
}        

它们各占一半,但我怎么能设置它以便它们总是占用JFrame的一半,即使调整大小？(PS我通常使用更好的变量名,我只是把它作为SSCCE)