Android 重写系统Crash处理类，保存Crash信息到SD卡

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 com.yrz.atourong.AtrApplication;
import com.yrz.atourong.impl.CrashHandlerImpl;
import com.yrz.atourong.model.BaseJson;
import com.yrz.atourong.service.HttpCrashHandlerService;

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.widget.Toast;
/**
* @author Stay 在Application中统一捕获异常，保存到文件中下次再打开时上传
*/
public class CrashHandler implements UncaughtExceptionHandler ,CrashHandlerImpl{
/**
* 是否开启日志输出,在Debug状态下开启, 在Release状态下关闭以提示程序性能
* */
public static final boolean DEBUG = true;
/** 系统默认的UncaughtException处理类 */
private Thread.UncaughtExceptionHandler mDefaultHandler;
/** CrashHandler实例 */
private static CrashHandler INSTANCE;
/** 程序的Context对象 */
private Context mContext;
private AtrApplication mApplication;
HttpCrashHandlerService hchs;
private Map<String, String> infos = 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");
private static final String SDCARD_ROOT = Environment.getExternalStorageDirectory().toString();
/** 保证只有一个CrashHandler实例 */
private CrashHandler() {
}

/** 获取CrashHandler实例 ,单例模式 */
public static CrashHandler getInstance() {
if (INSTANCE == null) {
INSTANCE = new CrashHandler();
}
return INSTANCE;
}

/**
* 初始化,注册Context对象, 获取系统默认的UncaughtException处理器, 设置该CrashHandler为程序的默认处理器
*
* @param ctx
*/
public void init(Context ctx,AtrApplication app) {
mContext = ctx;
hchs = new HttpCrashHandlerService(mContext, this);
mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
Thread.setDefaultUncaughtExceptionHandler(this);
mApplication = app;
}

/**
* 当UncaughtException发生时会转入该函数来处理
*/
@Override
public void uncaughtException(Thread thread, Throwable ex) {
if (ex != null) {
//收集设备参数信息
collectDeviceInfo(mContext);
//保存日志文件
saveCrashInfo2File(ex);
String msg = ex.getLocalizedMessage();
if(null!=msg&&msg.indexOf("com.baidu.android.pushservice.PushService")!=-1){
return;
}
}
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
// android.os.Process.killProcess(android.os.Process.myPid());
//			Intent i = mContext.getPackageManager().getLaunchIntentForPackage(
//					mContext.getPackageName());
//			i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
//			mContext.startActivity(i);
mDefaultHandler.uncaughtException(thread, ex);
System.exit(10);
} else { // 如果自己处理了异常，则不会弹出错误对话框，则需要手动退出app
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
}
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(10);
}
}

/**
* 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. 开发者可以根据自己的情况来自定义异常处理逻辑
*
* @return true代表处理该异常，不再向上抛异常，
*         false代表不处理该异常(可以将该log信息存储起来)然后交给上层(这里就到了系统的异常处理)去处理，
*         简单来说就是true不会弹出那个错误提示框，false就会弹出
*/
private boolean handleException(final Throwable ex) {
if (ex == null) {
return false;
}
final String msg = ex.getLocalizedMessage();
final StackTraceElement[] stack = ex.getStackTrace();
// final String message = ex.getMessage();
// 使用Toast来显示异常信息
new Thread() {
@Override
public void run() {
Looper.prepare();
// 可以只创建一个文件，以后全部往里面append然后发送，这样就会有重复的信息，个人不推荐
try {
//					if(BuildConfig.DEBUG){
//						InitData updataUtil = new InitData();
//						updataUtil.createSDFolder(InitData.getSDPath() + "/log");
//						String fileName = InitData.getSDPath() + "/log/" + "F10" + DataUtil.getNOWDateMSS();
//						File file = new File(fileName);
//						FileOutputStream fos = new FileOutputStream(file, true);
//						fos.write(msg != null ? msg.getBytes() : "".getBytes());
//						for (int i = 0; i < stack.length; i++) {
//							fos.write(stack[i].toString().getBytes());
//						}
//						fos.flush();
//						fos.close();
//					}else{
StringBuilder str_ex = new StringBuilder();
if(msg != null && msg.length() > 0){
str_ex.append(msg);
}
for (int i = 0; i < stack.length; i++) {
str_ex.append(stack[i].toString());
}
postReport(str_ex.toString());
//						FileUtils.writeFileWithBugLog(mContext, str_ex.toString());

//					}
} catch (Exception e) {
e.getStackTrace();
}
Looper.loop();
}

}.start();
return false;
}
// TODO 使用HTTP Post 发送错误报告到服务器 这里不再赘述
private void postReport(String message) {
String model = android.os.Build.MODEL;
String release = android.os.Build.VERSION.RELEASE;
String versionName=getVersion();
hchs.gainCrashHandler(model,release,versionName,message);
/* RequestParams rq = new RequestParams();
rq.put("phone_type", model);
rq.put("phone_ver", "Android版本" + release+(versionName.equals("")?"":("@ver"+versionName)));
rq.put("msg", message);
mApplication.post(HttpServiceURL.EXCEPTION_LOG, rq, new JsonHttpResponseHandler(){

@Override
public void onSuccess(int statusCode,Header[] headers, JSONObject response) {
try {
if (response != null) {
if(!response.isNull("boolen")){
String result = response.getString("boolen");
if (result.equals("1")) {
if(mContext != null)
Toast.makeText(mContext, "程序出错,反馈日志已经发送到服务端.",Toast.LENGTH_LONG).show();
}
}
}
} catch (Exception e) {
}
}
});	*/
}

/**
* 获取版本号
* @return 当前应用的版本号
*/
public String getVersion() {
try {
PackageManager manager = mApplication.getPackageManager();
PackageInfo info = manager.getPackageInfo(mApplication.getPackageName(), 0);
String version = info.versionName;
return version;
} catch (Exception e) {
e.printStackTrace();
return "";
}
}

@Override
public void gainCrashHandlersuccess(BaseJson response) {
// TODO Auto-generated method stub
try {
if (response != null) {
if(response.getBoolen()!=null){
String result = response.getBoolen();
if (result.equals("1")) {
if(mContext != null)
Toast.makeText(mContext, "程序出错,反馈日志已经发送到服务端.",Toast.LENGTH_LONG).show();
}
}
}
} catch (Exception e) {
}
}

@Override
public void gainCrashHandlerfail() {
// TODO Auto-generated method stub

}

/**
* 为我们的应用程序设置自定义Crash处理
*/
public void setCustomCrashHanler(Context context){
mContext = context;
Thread.setDefaultUncaughtExceptionHandler(this);
}

/**
* 显示提示信息，需要在线程中显示Toast
* @param context
* @param msg
*/
private void showToast(final Context context, final String msg){
new Thread(new Runnable() {

@Override
public void run() {
Looper.prepare();
Toast.makeText(context, msg, Toast.LENGTH_LONG).show();
Looper.loop();
}
}).start();
}

/**
* 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);
}
}
}

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)) {

String path = "/sdcard/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) {
}
return null;
}
}