Android崩溃异常捕获方法

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.Locale;
import java.util.Map;
import java.util.Map.Entry;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
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.util.Log;
import android.widget.Toast;
/**
* UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序,并记录发送错误报告.
* 
* @author user
* 
*/
@SuppressLint("SdCardPath")
public class CrashHandler implements UncaughtExceptionHandler {
public static final String TAG = "TEST";
// CrashHandler 实例
private static CrashHandler INSTANCE = new CrashHandler();
// 程序的 Context 对象
private Context mContext;
// 系统默认的 UncaughtException 处理类
private Thread.UncaughtExceptionHandler mDefaultHandler;
// 用来存储设备信息和异常信息
private Map<String, String> infos = new HashMap<String, String>();
// 用来显示Toast中的信息
private static String error = "程序错误，额，不对，我应该说，服务器正在维护中，请稍后再试";
private static final Map<String, String> regexMap = new HashMap<String, String>();
// 用于格式化日期,作为日志文件名的一部分
private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss",
Locale.CHINA);
/** 保证只有一个 CrashHandler 实例 */
private CrashHandler() {
//
}
/** 获取 CrashHandler 实例 ,单例模式 */
public static CrashHandler getInstance() {
initMap();
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);
Log.d("TEST", "Crash:init");
}
/**
* 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) {
// 如果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);
Log.d("TEST", "defalut");
} else {
try {
Thread.sleep();
} catch (InterruptedException e) {
Log.e(TAG, "error : ", e);
}
// 退出程序
android.os.Process.killProcess(android.os.Process.myPid());
// mDefaultHandler.uncaughtException(thread, ex);
System.exit();
}
}
/**
* 自定义错误处理，收集错误信息，发送错误报告等操作均在此完成
* 
* @param ex
* @return true：如果处理了该异常信息；否则返回 false
*/
private boolean handleException(Throwable ex) {
if (ex == null) {
return false;
}
// 收集设备参数信息
// collectDeviceInfo(mContext);
// 保存日志文件
saveCrashInfoFile(ex);
// 使用 Toast 来显示异常信息
new Thread() {
@Override
public void run() {
Looper.prepare();
Toast.makeText(mContext, error, Toast.LENGTH_LONG).show();
Looper.loop();
}
}.start();
return true;
}
/**
* 收集设备参数信息
* 
* @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中 *
* 
* @param ex
* @return 返回文件名称,便于将文件传送到服务器
*/
private String saveCrashInfoFile(Throwable ex) {
StringBuffer sb = getTraceInfo(ex);
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)) {
String path = Environment.getExternalStorageDirectory()
+ "/crash/";
File dir = new File(path);
if (!dir.exists()) {
dir.mkdirs();
}
FileOutputStream fos = new FileOutputStream(path + 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;
}
/**
* 整理异常信息
* @param e
* @return
*/
public static StringBuffer getTraceInfo(Throwable e) {
StringBuffer sb = new StringBuffer();
Throwable ex = e.getCause() == null ? e : e.getCause();
StackTraceElement[] stacks = ex.getStackTrace();
for (int i = ; i < stacks.length; i++) {
if (i == ) {
setError(ex.toString());
}
sb.append("class: ").append(stacks[i].getClassName())
.append("; method: ").append(stacks[i].getMethodName())
.append("; line: ").append(stacks[i].getLineNumber())
.append("; Exception: ").append(ex.toString() + "\n");
}
Log.d(TAG, sb.toString());
return sb;
}
/**
* 设置错误的提示语
* @param e
*/
public static void setError(String e) {
Pattern pattern;
Matcher matcher;
for (Entry<String, String> m : regexMap.entrySet()) {
Log.d(TAG, e+"key:" + m.getKey() + "; value:" + m.getValue());
pattern = Pattern.compile(m.getKey());
matcher = pattern.matcher(e);
if(matcher.matches()){
error = m.getValue();
break;
}
}
}
/**
* 初始化错误的提示语
*/
private static void initMap() {
// Java.lang.NullPointerException
// java.lang.ClassNotFoundException
// java.lang.ArithmeticException
// java.lang.ArrayIndexOutOfBoundsException
// java.lang.IllegalArgumentException
// java.lang.IllegalAccessException
// SecturityException
// NumberFormatException
// OutOfMemoryError 
// StackOverflowError 
// RuntimeException 
regexMap.put(".*NullPointerException.*", "嘿，无中生有~Boom!");
regexMap.put(".*ClassNotFoundException.*", "你确定你能找得到它？");
regexMap.put(".*ArithmeticException.*", "我猜你的数学是体育老师教的，对吧？");
regexMap.put(".*ArrayIndexOutOfBoundsException.*", "恩，无下限=无节操，请不要跟我搭话");
regexMap.put(".*IllegalArgumentException.*", "你的出生就是一场错误。");
regexMap.put(".*IllegalAccessException.*", "很遗憾，你的信用卡账号被冻结了，无权支付");
regexMap.put(".*SecturityException.*", "死神马上降临");
regexMap.put(".*NumberFormatException.*", "想要改变一下自己形象？去泰国吧，包你满意");
regexMap.put(".*OutOfMemoryError.*", "或许你该减减肥了");
regexMap.put(".*StackOverflowError.*", "啊，啊，憋不住了！");
regexMap.put(".*RuntimeException.*", "你的人生走错了方向，重来吧");
}
}

import android.app.Application;
public class CrashApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
CrashHandler crashHandler = CrashHandler.getInstance();
crashHandler.init(getApplicationContext());
}
} 

<application android:name=".CrashApplication" ... /> 

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