Getting the crash log and send it as email

Question

From my search, i got the below code for getting the Crash Log .

try {
      Process process = Runtime.getRuntime().exec("logcat -d");
      BufferedReader bufferedReader = new BufferedReader(
      new InputStreamReader(process.getInputStream()));

      StringBuilder log=new StringBuilder();
      String line;
      while ((line = bufferedReader.readLine()) != null) 
      {
        log.append(line);
      }

But where do i add this code, so that i should get the crash report whenever my app crashes .

Also i want to email it or send to the server, but after the app getting crashed, how to call the action to send email/HTTP post method .

Please advise and thanks in advance .

Answer 1

The best way to handle crash logs is creating an UncaughtExceptionHandler and handling it as per your requirement. Create a BaseActivity class and extend all the Activities with that and put this code stuff in the BaseActivity class.

private Thread.UncaughtExceptionHandler handleAppCrash = 
                                         new Thread.UncaughtExceptionHandler() {
        @Override
        public void uncaughtException(Thread thread, Throwable ex) {
            Log.e("error", ex.toString());
            //send email here
        }
    };

Then just enable is inside onCreate() method of your BaseActivity by using

Thread.setDefaultUncaughtExceptionHandler(handleAppCrash);

So, now whenever there will be a crash in your Application uncaughtException() will be called and you will have to handle the crash accordingly.

Answer 2

I recommend you use ARCA https://github.com/ACRA/acra.

Include arca in your build.gradle--it uses the apache 2.0 license as of 10/29.

compile 'ch.acra:acra:4.9.0' //TODO:  Apache 2.0 license https://github.com/ACRA/acra

In your class that extends Application, drop this on top of the "class" declaration.

@ReportsCrashes(mailTo = "[email protected]",
        customReportContent = { ReportField.APP_VERSION_CODE, ReportField.APP_VERSION_NAME, ReportField.ANDROID_VERSION, ReportField.PHONE_MODEL, ReportField.CUSTOM_DATA, ReportField.STACK_TRACE, ReportField.LOGCAT },
        mode = ReportingInteractionMode.TOAST,
        resToastText = R.string.resToastText) //you get to define resToastText
public class MyApplication extends Application {

Then override the following method from the same Application class like so:

@Override
protected void attachBaseContext(Context base) {
    super.attachBaseContext(base);

    // The following line triggers the initialization of ACRA
    ACRA.init(this);
}

Answer 3

In my case I have a bug that i cant replicate on my phone I just want the stack trace back from a lone tester. The simplest way I could find to do this was to get it copied into the users clipboard and ask them to send it to me here is the code:

import android.app.Application;
import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.Context;

import java.io.PrintWriter;
import java.io.StringWriter;

/**
 * Copies the stack trace the exception that is causing your application to crash into the clip board.
 * Ask your testers to paste it into an email / text message to you.
 *
 * @author Stuart Clark
 */

public class CrashDebugApplication extends Application {
  @Override
  public void onCreate() {
    super.onCreate();

    Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
      @Override
      public void uncaughtException(Thread thread, Throwable e) {
        // Get the stack trace.
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        e.printStackTrace(pw);

        // Add it to the clip board and close the app
        ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
        ClipData clip = ClipData.newPlainText("Stack trace", sw.toString());
        clipboard.setPrimaryClip(clip);
        System.exit(1);
      }
    });

  }
}

Then set the android:name property in Android Manifesto i.e.

<application android:icon="@mipmap/ic_launcher" android:name=".CrashDebugApplication">