如何从我的Android应用程序中获得崩溃数据(至少堆栈跟踪)?至少在我自己的设备上工作时可以通过电缆检索,但理想的情况是,从我的应用程序在野外运行的任何实例中都可以,这样我就可以改进它,使它更可靠。


当前回答

我在这里做了我自己的版本: http://androidblogger.blogspot.com/2009/12/how-to-improve-your-application-crash.html

这基本上是相同的事情,但我使用邮件而不是http连接来发送报告,更重要的是,我添加了一些信息,如应用程序版本,操作系统版本,手机型号,或可用内存到我的报告…

其他回答

我在这里做了我自己的版本: http://androidblogger.blogspot.com/2009/12/how-to-improve-your-application-crash.html

这基本上是相同的事情,但我使用邮件而不是http连接来发送报告,更重要的是,我添加了一些信息,如应用程序版本,操作系统版本,手机型号,或可用内存到我的报告…

使用这个来捕获异常细节:

String stackTrace = Log.getStackTraceString(exception); 

保存在数据库中,并维护日志。

We use our home-grown system inside the company and it serves us very well. It's an android library that send crash reports to server and server that receives reports and makes some analytics. Server groups exceptions by exception name, stacktrace, message. It helps to identify most critical issues that need to be fixed. Our service is in public beta now so everyone can try it. You can create account at http://watchcat.co or you can just take a look how it works using demo access http://watchcat.co/reports/index.php?demo.

好吧,我看了rrainn和Soonil提供的样本,我找到了一个解决方案 这不会破坏错误处理。

我修改了CustomExceptionHandler,以便它从我们关联的新线程中存储原始的UncaughtExceptionHandler。在新的“uncaughtException”的末尾- 方法,我只是使用存储的UncaughtExceptionHandler调用旧函数。

在DefaultExceptionHandler类中,你需要这样的东西:

public class DefaultExceptionHandler implements UncaughtExceptionHandler{
  private UncaughtExceptionHandler mDefaultExceptionHandler;

  //constructor
  public DefaultExceptionHandler(UncaughtExceptionHandler pDefaultExceptionHandler)
  {
       mDefaultExceptionHandler= pDefaultExceptionHandler;
  }
  public void uncaughtException(Thread t, Throwable e) {       
        //do some action like writing to file or upload somewhere         

        //call original handler  
        mStandardEH.uncaughtException(t, e);        

        // cleanup, don't know if really required
        t.getThreadGroup().destroy();
  }
}

在http://code.google.com/p/android-remote-stacktrace上对代码进行了修改 你有一个很好的工作基地,登录到你的web服务器或 sd卡。

For sample applications and debugging purposes, I use a simple solution that allows me to write the stacktrace to the sd card of the device and/or upload it to a server. This solution has been inspired by Project android-remote-stacktrace (specifically, the save-to-device and upload-to-server parts) and I think it solves the problem mentioned by Soonil. It's not optimal, but it works and you can improve it if you want to use it in a production application. If you decide to upload the stacktraces to the server, you can use a php script (index.php) to view them. If you're interested, you can find all the sources below - one java class for your application and two optional php scrips for the server hosting the uploaded stacktraces.

在上下文中(例如主活动),调用

if(!(Thread.getDefaultUncaughtExceptionHandler() instanceof CustomExceptionHandler)) {
    Thread.setDefaultUncaughtExceptionHandler(new CustomExceptionHandler(
            "/sdcard/<desired_local_path>", "http://<desired_url>/upload.php"));
}

CustomExceptionHandler

public class CustomExceptionHandler implements UncaughtExceptionHandler {

    private UncaughtExceptionHandler defaultUEH;

    private String localPath;

    private String url;

    /* 
     * if any of the parameters is null, the respective functionality 
     * will not be used 
     */
    public CustomExceptionHandler(String localPath, String url) {
        this.localPath = localPath;
        this.url = url;
        this.defaultUEH = Thread.getDefaultUncaughtExceptionHandler();
    }

    public void uncaughtException(Thread t, Throwable e) {
        String timestamp = TimestampFormatter.getInstance().getTimestamp();
        final Writer result = new StringWriter();
        final PrintWriter printWriter = new PrintWriter(result);
        e.printStackTrace(printWriter);
        String stacktrace = result.toString();
        printWriter.close();
        String filename = timestamp + ".stacktrace";

        if (localPath != null) {
            writeToFile(stacktrace, filename);
        }
        if (url != null) {
            sendToServer(stacktrace, filename);
        }

        defaultUEH.uncaughtException(t, e);
    }

    private void writeToFile(String stacktrace, String filename) {
        try {
            BufferedWriter bos = new BufferedWriter(new FileWriter(
                    localPath + "/" + filename));
            bos.write(stacktrace);
            bos.flush();
            bos.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void sendToServer(String stacktrace, String filename) {
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);
        List<NameValuePair> nvps = new ArrayList<NameValuePair>();
        nvps.add(new BasicNameValuePair("filename", filename));
        nvps.add(new BasicNameValuePair("stacktrace", stacktrace));
        try {
            httpPost.setEntity(
                    new UrlEncodedFormEntity(nvps, HTTP.UTF_8));
            httpClient.execute(httpPost);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

upload.php

<?php
    $filename = isset($_POST['filename']) ? $_POST['filename'] : "";
    $message = isset($_POST['stacktrace']) ? $_POST['stacktrace'] : "";
    if (!ereg('^[-a-zA-Z0-9_. ]+$', $filename) || $message == ""){
        die("This script is used to log debug data. Please send the "
                . "logging message and a filename as POST variables.");
    }
    file_put_contents($filename, $message . "\n", FILE_APPEND);
?>

index . php

<?php
    $myDirectory = opendir(".");
    while($entryName = readdir($myDirectory)) {
        $dirArray[] = $entryName;
    }
    closedir($myDirectory);
    $indexCount = count($dirArray);
    sort($dirArray);
    print("<TABLE border=1 cellpadding=5 cellspacing=0 \n");
    print("<TR><TH>Filename</TH><TH>Filetype</th><th>Filesize</TH></TR>\n");
    for($index=0; $index < $indexCount; $index++) {
        if ((substr("$dirArray[$index]", 0, 1) != ".") 
                && (strrpos("$dirArray[$index]", ".stacktrace") != false)){ 
            print("<TR><TD>");
            print("<a href=\"$dirArray[$index]\">$dirArray[$index]</a>");
            print("</TD><TD>");
            print(filetype($dirArray[$index]));
            print("</TD><TD>");
            print(filesize($dirArray[$index]));
            print("</TD></TR>\n");
        }
    }
    print("</TABLE>\n");
?>