主要类别：

package com.example.callstatus;

import java.io.File;

import java.io.FileOutputStream;

import java.io.PrintWriter;

import java.io.StringWriter;

import java.lang.Thread.UncaughtExceptionHandler;

import java.lang.reflect.Field;

import java.net.UnknownHostException;

import java.text.DateFormat;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.HashMap;

import java.util.Map;

import android.annotation.SuppressLint;

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.telephony.TelephonyManager;

import android.text.TextUtils;

import android.util.Log;

import android.widget.Toast;

/**

 * 捕获android程序崩溃日志<br>

 * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序.

 *

 * @author PMTOAM

 *

 */

@SuppressLint("SimpleDateFormat")

public class CrashHandler implements UncaughtExceptionHandler

{

	public static final String TAG = CrashHandler.class.getCanonicalName();

	// 系统默认的UncaughtException处理类

	private Thread.UncaughtExceptionHandler mDefaultHandler;

	// CrashHandler实例

	private static CrashHandler INSTANCE = new CrashHandler();

	// 程序的Context对象

	private Context mContext;

	// 用来存储设备信息和异常信息

	private Map<String, String> infos = new HashMap<String, String>();

	// 用于格式化日期,作为日志文件名称的一部分

	private DateFormat formatter = new SimpleDateFormat("yyyyMMdd_HHmmss");

	/**

	 * 保证仅仅有一个实例

	 */

	private CrashHandler()

	{

	}

	/**

	 * 获取实例 ，单例模式

	 */

	public static CrashHandler getInstance()

	{

		return INSTANCE;

	}

	/**

	 * 初始化

	 *

	 * @param context

	 */

	public void init(Context context)

	{

		mContext = context;

		// 获取系统默认的UncaughtException处理器

		mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();

		// 设置该CrashHandler为程序的默认处理器

		Thread.setDefaultUncaughtExceptionHandler(this);

	}

	/**

	 * 当UncaughtException发生时会转入该函数来处理

	 */

	@Override

	public void uncaughtException(Thread thread, Throwable ex)

	{

		if (!handleException(ex) && mDefaultHandler != null)

		{

			// 假设用户没有处理则让系统默认的异常处理器来处理

			mDefaultHandler.uncaughtException(thread, ex);

		}

		else

		{

			try

			{

				Thread.sleep(3000);

			}

			catch (InterruptedException e)

			{

				Log.e(TAG, "error : ", e);

			}

			// 退出程序

			android.os.Process.killProcess(android.os.Process.myPid());

			System.exit(1);

		}

	}

	/**

	 * 自己定义错误处理,收集错误信息 发送错误报告等操作均在此完毕.

	 *

	 * @param ex

	 * @return true:假设处理了该异常信息;否则返回false.

	 */

	private boolean handleException(Throwable ex)

	{

		if (ex == null)

		{

			return false;

		}

		// 使用Toast来显示异常信息

		new Thread()

		{

			@Override

			public void run()

			{

				Looper.prepare();

				Toast.makeText(mContext, "非常抱歉。程序出现异常。

", Toast.LENGTH_LONG)

						.show();

				Looper.loop();

			}

		}.start();

		// 收集设备參数信息

		collectDeviceInfo(mContext);

		// 保存日志文件

		String str = saveCrashInfo2File(ex);

		Log.e(TAG, str);

		return false;

	}

	/**

	 * 收集设备參数信息

	 *

	 * @param ctx

	 */

	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);

			}

		}

	}

	/**

	 * 保存错误信息到文件里

	 *

	 * @param ex

	 * @return 返回文件名称称,便于将文件传送到server

	 */

	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");

		}

		sb.append("\n" + getStackTraceString(ex));

		try

		{

			String time = formatter.format(new Date());

			TelephonyManager mTelephonyMgr = (TelephonyManager) mContext

					.getSystemService(Context.TELEPHONY_SERVICE);

			String imei = mTelephonyMgr.getDeviceId();

			if (TextUtils.isEmpty(imei))

			{

				imei = "unknownimei";

			}

			String fileName = "CRS_" + time + "_" + imei + ".txt";

			File sdDir = null;

			if (Environment.getExternalStorageState().equals(

					android.os.Environment.MEDIA_MOUNTED))

				sdDir = Environment.getExternalStorageDirectory();

			File cacheDir = new File(sdDir + File.separator + "dPhoneLog");

			if (!cacheDir.exists())

				cacheDir.mkdir();

			File filePath = new File(cacheDir + File.separator + fileName);

			FileOutputStream fos = new FileOutputStream(filePath);

			fos.write(sb.toString().getBytes());

			fos.close();

			return fileName;

		}

		catch (Exception e)

		{

			Log.e(TAG, "an error occured while writing file...", e);

		}

		return null;

	}

	/**

	 * 获取捕捉到的异常的字符串

	 */

	public static String getStackTraceString(Throwable tr)

	{

		if (tr == null)

		{

			return "";

		}

		Throwable t = tr;

		while (t != null)

		{

			if (t instanceof UnknownHostException)

			{

				return "";

			}

			t = t.getCause();

		}

		StringWriter sw = new StringWriter();

		PrintWriter pw = new PrintWriter(sw);

		tr.printStackTrace(pw);

		return sw.toString();

	}

}

用法：

package com.example.callstatus;

import android.app.Application;

public class MyApplication extends Application

{

	@Override

	public void onCreate()

	{

		super.onCreate();

		CrashHandler crashHandler = CrashHandler.getInstance();

		crashHandler.init(getApplicationContext());

	}

}

所需权限：

<uses-permission android:name="android.permission.READ_PHONE_STATE" />

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />