Crash统一捕获捕获并信息本地化保存

package com.dahe.mylibrary.utils;

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

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import java.io.File;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
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 static android.os.Environment.DIRECTORY_ALARMS;

/**

• 全局捕获异常

• 当程序发生Uncaught异常的时候,有该类来接管程序,并记录错误日志

*
*/
@SuppressLint(“SimpleDateFormat”)
public class CrashHandler implements Thread.UncaughtExceptionHandler {

public static String TAG = "MyCrash"; // 系统默认的UncaughtException处理类 private Thread.UncaughtExceptionHandler mDefaultHandler;  private static CrashHandler instance = new CrashHandler(); 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,作为日志文件名的一部分 private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  /** 保证只有一个CrashHandler实例 */ private CrashHandler() { }  /** 获取CrashHandler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);     FileUtil.removeFileByTime(getGlobalpath());

// autoClear(5);

}  /**  * 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);     } else {         SystemClock.sleep(3000);         // 退出程序         android.os.Process.killProcess(android.os.Process.myPid());         System.exit(1);     } }  /**  * 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;     try {         // 使用Toast来显示异常信息         new Thread() {              @Override             public void run() {                 Looper.prepare();                 Toast.makeText(mContext, "很抱歉,程序出现异常,即将重启.",                         Toast.LENGTH_LONG).show();                 Looper.loop();             }         }.start();         // 收集设备参数信息         collectDeviceInfo(mContext);         // 保存日志文件         saveCrashInfoFile(ex);         SystemClock.sleep(3000);     } catch (Exception e) {         e.printStackTrace();     }      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 + "";             String versionCode = pi.versionCode + "";             infos.put("versionName", versionName);             infos.put("versionCode", versionCode);         }     } catch (PackageManager.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());         } 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  * @throws Exception  */ private String saveCrashInfoFile(Throwable ex) throws Exception {     StringBuffer sb = new StringBuffer();     try {         SimpleDateFormat sDateFormat = new SimpleDateFormat(                 "yyyy-MM-dd HH:mm:ss");         String date = sDateFormat.format(new java.util.Date());         sb.append("rn" + date + "n");         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.flush();         printWriter.close();         String result = writer.toString();         sb.append(result);          String fileName = writeFile(sb.toString());         return fileName;     } catch (Exception e) {         Log.e(TAG, "an error occured while writing file...", e);         sb.append("an error occured while writing file...rn");         writeFile(sb.toString());     }     return null; }  private String writeFile(String sb) throws Exception {     String time = formatter.format(new Date());     String fileName = "crash-" + time + ".log";

// if (FileUtil.hasSdcard()) {

        String path = getGlobalpath();         File dir = new File(path);         if (!dir.exists())             dir.mkdirs();          String filePath = path + fileName;         File txtFile = new File(filePath);         if (!txtFile.exists())             txtFile.createNewFile();          FileOutputStream fos = new FileOutputStream(txtFile, true);         fos.write(sb.getBytes());         fos.flush();         fos.close();

// }

    return fileName; }  public static String getGlobalpath() {     return Environment.getExternalStorageDirectory().getAbsolutePath()             + File.separator + "crash" + File.separator; }  public static void setTag(String tag) {     TAG = tag; } 

}

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