CrashHandler.java

package org.mortbay.ijetty;

import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;
import java.lang.reflect.Field;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.mortbay.ijetty.network.InterfaceOp;
import org.mortbay.ijetty.util.ApkUtils;

import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Build;
import android.os.Environment;
import android.os.Looper;
import android.os.SystemClock;
import android.util.Log;
import android.widget.Toast;

public class CrashHandler implements UncaughtExceptionHandler {

	public static final String TAG = "CrashHandler";

	private Thread.UncaughtExceptionHandler mDefaultHandler;
	private static CrashHandler INSTANCE = new CrashHandler();
	private Context mContext;
	private Map<String, String> infos = new HashMap<String, String>();

	private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");

	private CrashHandler() {
	}

	public static CrashHandler getInstance() {
		return INSTANCE;
	}

	public void init(Context context) {
		mContext = context;
		mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
		Thread.setDefaultUncaughtExceptionHandler(this);
	}

	public void uncaughtException(Thread thread, Throwable ex) {
		if (!handleException(ex) && mDefaultHandler != null) {
			mDefaultHandler.uncaughtException(thread, ex);
		} else {
			SystemClock.sleep(2000);
			android.os.Process.killProcess(android.os.Process.myPid());
			System.exit(1);
		}
	}

	private boolean handleException(Throwable ex) {
		if (ex == null) {
			return false;
		}
		InterfaceOp.protoHeartbeat(null);
		ex.printStackTrace();
		Log.e(TAG, ex.getClass().getSimpleName() + ":" + ex.getMessage());
		StackTraceElement[] stEles = ex.getStackTrace();
		for (StackTraceElement ele : stEles) {
			Log.e(TAG, "  "
					+ ele.getClassName()
					+ "."
					+ ele.getMethodName()
					+ "("
					+ ele.getFileName()
					+ ((ele.getLineNumber() > 0) ? (":" + ele.getLineNumber())
							: "") + ")");
		}
		new Thread() {
			@Override
			public void run() {
				Looper.prepare();
				Toast.makeText(mContext, "Restart", Toast.LENGTH_LONG).show();
				Looper.loop();
			}
		}.start();
		collectDeviceInfo(mContext);
		saveCrashInfo2File(ex);
		ApkUtils.startApk("org.mortbay.ijetty", ".IJetty");
		// NetworkUtil.sendUICrashBroadcase();
		return true;
	}

	public void collectDeviceInfo(Context ctx) {
		try {
			PackageManager pm = ctx.getPackageManager();
			PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(),
					PackageManager.GET_ACTIVITIES);
			if (pi != null) {
				String versionName = pi.versionName == null ? "null"
						: pi.versionName;
				String versionCode = pi.versionCode + "";
				infos.put("versionName", versionName);
				infos.put("versionCode", versionCode);
			}
		} catch (NameNotFoundException e) {
			Log.e(TAG, "an error occured when collect package info", e);
		}
		Field[] fields = Build.class.getDeclaredFields();
		for (Field field : fields) {
			try {
				field.setAccessible(true);
				infos.put(field.getName(), field.get(null).toString());
				Log.d(TAG, field.getName() + " : " + field.get(null));
			} catch (Exception e) {
				Log.e(TAG, "an error occured when collect crash info", e);
			}
		}
	}

	private String saveCrashInfo2File(Throwable ex) {

		StringBuffer sb = new StringBuffer();
		for (Map.Entry<String, String> entry : infos.entrySet()) {
			String key = entry.getKey();
			String value = entry.getValue();
			sb.append(key + "=" + value + "\n");
		}

		Writer writer = new StringWriter();
		PrintWriter printWriter = new PrintWriter(writer);
		ex.printStackTrace(printWriter);
		Throwable cause = ex.getCause();
		while (cause != null) {
			cause.printStackTrace(printWriter);
			cause = cause.getCause();
		}
		printWriter.close();
		String result = writer.toString();
		sb.append(result);
		try {
			long timestamp = System.currentTimeMillis();
			String time = formatter.format(new Date());
			String fileName = "crash-" + time + "-" + timestamp + ".log";
			if (Environment.getExternalStorageState().equals(
					Environment.MEDIA_MOUNTED)) {
				File dir = new File(AppConstants.getMediaSdFolder());
				if (!dir.exists()) {
					dir.mkdirs();
				}
				FileOutputStream fos = new FileOutputStream(
						dir.getAbsolutePath() + "/" + fileName);

				fos.write(sb.toString().getBytes());
				fos.close();
			}
			return fileName;
		} catch (Exception e) {
			Log.e(TAG, "an error occured while writing file...", e);
		}
		return null;
	}
}