黑莓日志文件 [英] Blackberry log file

问题描述

有没有使用BlackBerry API创建日志文件的方法？

Is there a method for creating a log file using a blackberry api ?

喜欢的东西log4j的？

Something like log4j ?

我要保存运行模拟器在PC上此日志文件，这可能吗？

I'd like to save this log file on pc running the emulator, is this possible ?

推荐答案

目前Antair，我们的黑莓应用开发过程中，我们通常包括在开发调试控制台建立我们的应用程序。

At Antair, during development of our BlackBerry applications, we often include a debug console in the dev builds of our apps.

使用调试控制台，所有的调试输出命中输出画面时dev的版本是在模拟器上运行，而当开发构建物理试验设备上运行，调试输出自动依然存在，可查看在专用的屏幕，可以通过菜单选项或按钮上拉。随着一点点的code的修改，就可以轻松拥有的调试日志被重新路由到一个文件，通过电子邮件发送或通过网络连接发送。

With the debug console, all debug output hits the output screen when the dev build is running in the simulator, and when the dev build runs on a physical test device, the debug output is automatically persisted and is available to view on a dedicated screen that can be pulled up via a menu option or button. With a little code modification, you can easily have the debug log be rerouted to a file, emailed or sent over a network connection.

在code以下是我们在我们公司使用调试控制台的精简版。

The code below is a stripped-down version of the debug console we use at our company.

使用控制台是容易的。在项目中包含的code，填写 PERSISTENCE_GUID 作为您的应用程序中，调试日志将 TAGID 字符串，以确定您的应用程序名称，当你想输出调试语句，只需调用 Debug.print（事情发生在这里......）;

Using the console is easy. Include the code in your project, fill out the PERSISTENCE_GUID for your application, set the TAGID string to identify your application name in the debug logs, and when you want to output a debug statement, simply call Debug.print("Something happened here…");

调试输出的每一行，无论是在输出窗口在模拟器中运行时，并在设备上查看时调试控制台屏幕，将包含调试信息，在其上进行呼叫的线程数（用线程/ UI调试），以及日期/日志报表的时间，用毫秒时间戳性能分析。

Each line of the debug output, both in the output window when running in a simulator, and in the debug console screen when viewed on a device, will contain your debug message, the thread number on which the call was made (useful for thread/ui debugging), and the date/time of the log statement, with a millisecond timestamp for performance profiling.

要查看真实设备的调试控制台中，将简单的在一个呼叫 pushScreen（新AntairLogScreen（））。屏幕上有一个内置的菜单项，清除持久日志信息，并会解雇自己像一个普通的应用程序屏幕。

To view the debug console on a real device, simple put in a call to pushScreen(new AntairLogScreen()). The screen has a built-in menu item to clear the persisted log messages, and will dismiss itself like a regular application screen.

如果您正在运行的RIM编译器preprocessor开发，QA​​之间切换，并且产品构建，您可以简单地把在呼叫设置的 Debug.ENABLED = FALSE 作为一切，但在开发版本，并调试控制台将在那里当你需要调试和悄悄离去，当你不需要它。

If you’re running the RIM compiler preprocessor to switch between development, QA, and production builds, you can simply put in a call to set Debug.ENABLED = false for everything but the development builds, and the debug console will be there when you need to debug and go away quietly when you don’t need it.

在code如下。

// ---------------------------------------------------------------------------
// Antair Debug Log (for the BlackBerry API)
// http://www.antair.com
// ---------------------------------------------------------------------------

package com.antair.examples.debug;

import net.rim.device.api.i18n.SimpleDateFormat;
import java.util.Date;
import net.rim.device.api.collection.util.BigVector;
import net.rim.device.api.system.PersistentObject;
import net.rim.device.api.system.PersistentStore;
import net.rim.device.api.ui.MenuItem;
import net.rim.device.api.ui.component.Menu;
import net.rim.device.api.ui.component.RichTextField;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.util.Persistable;

final class Debug implements Persistable
{
    final static boolean ENABLED = true;
    final static String TAGID = "MY_PROJECT";
    final static long PERSISTENCE_GUID = /* YOUR OWN PERSISTENCE GUID */;

    private BigVector _messages = new BigVector();

    static String print(String str)
    {
        if ( Debug.ENABLED )
        {
            StringBuffer sb = new StringBuffer();
            sb.append(TAGID);
            sb.append("\n");
            sb.append(Thread.currentThread().toString());
            sb.append("\n");
            sb.append(new SimpleDateFormat("MM/dd/yy HH:mm:ss:SSS").format(
                new Date()));
            sb.append("\n");
            sb.append(str); sb.append("\n");
            str = sb.toString();

            System.out.println(str);
            System.out.flush();

            Debug d = load();
            d._messages.addElement(str);
            save(d);
        }

        return str;
    }

    static BigVector getPersistedMessages()
    {
        return load()._messages;
    }

    static void clearPersistedMessages()
    {
        save(new Debug());
    }

    private static Debug load()
    {
        Debug d = null;

        try
        {
            PersistentObject po =     
                PersistentStore.getPersistentObject(Debug.PERSISTENCE_GUID);

            synchronized(po)
            {
                Object obj = po.getContents();
                d = (obj == null) ? new Debug() : (Debug)obj;
            }
        }

        catch ( Exception e )
        {
            d = new Debug();
        }

        return d;
    }

    private static void save(Debug d)
    {
        try
        {
            PersistentObject po = 
              PersistentStore.getPersistentObject(Debug.PERSISTENCE_GUID);

            synchronized(po)
            {
                po.setContents(d);
                po.commit();
            }
        }
        catch ( Exception e )
        {
        }
    }
}

final class ClearAntairLogScreenMenuItem extends MenuItem
{
    ClearAntairLogScreenMenuItem(int position)
    {
        super("Clear Log", position, 0);
    }

    public void run()
    {
        Debug.clearPersistedMessages();
    }
}

final class AntairLogScreen extends MainScreen
{
    AntairLogScreen()
    {
        super(MainScreen.DEFAULT_CLOSE|MainScreen.DEFAULT_MENU);

        StringBuffer text = new StringBuffer();

        BigVector logItems = Debug.getPersistedMessages();

        for ( int i = 0 ; i < logItems.size() ; ++i )
        {
            text.append((String)logItems.elementAt(i) + "\n");
        }

        add(new RichTextField(text.toString()));
    }

    protected void makeMenu ( Menu menu, int instance )
    {
        menu.add(new ClearAntairLogScreenMenuItem(100000));
    }
}

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