CrashHandler for android _Android

知是行的主意,行是知的功夫。这篇文章主要讲述CrashHandler for android相关的知识，希望能为你提供帮助。

package com.envy15.cherry.sys.log; 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; import java.io.File; import java.io.FileOutputStream; 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; /** * Created by envy15 on 2016/10/30. * 崩溃日志记录 * 参考： *http://blog.csdn.net/u012333411/article/details/49019415 *http://blog.csdn.net/wangyuexing_blog/article/details/39009069 CrashHandler.getInstance().init(this); */ @SuppressLint("SimpleDateFormat") public class CrashHandler implements Thread.UncaughtExceptionHandler { public static String TAG = "CherryCrash"; // 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> errInfo = 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"); /** * 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); 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 + ""; errInfo.put("versionName", versionName); errInfo.put("versionCode", versionCode); } } catch (PackageManager.NameNotFoundException e) { Log.e(TAG, "an error occur when collect package info", e); } Field[] fields = Build.class.getDeclaredFields(); for (Field field : fields) { try { field.setAccessible(true); errInfo.put(field.getName(), field.get(null).toString()); } catch (Exception e) { Log.e(TAG, "an error occur 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("\r\n" + date + "\n"); for (Map.Entry< String, String> entry : errInfo.entrySet()) { String key = entry.getKey(); String value = https://www.songbingjia.com/android/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 occur while writing file...", e); sb.append("an error occur while writing file...\r\n"); writeFile(sb.toString()); } return null; }private String writeFile(String sb) throws Exception { String time = formatter.format(new Date()); String fileName = "crash-" + time + ".log"; String path = getGlobalPath(); File dir = new File(path); if (!dir.exists()){ dir.mkdirs(); }FileOutputStream fos = new FileOutputStream(path + fileName, 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; }/** * 文件删除 * * @param autoClearDay 文件保存天数 */ public void autoClear(final int autoClearDay) { //FileUtil.delete(getGlobalPath(), new FilenameFilter() { // //@Override //public boolean accept(File file, String filename) { //String s = FileUtil.getFileNameWithoutExtension(filename); //int day = autoClearDay < 0 ? autoClearDay : -1 * autoClearDay; //String date = "crash-" + DateUtil.getOtherDay(day); //return date.compareTo(s) > = 0; //} //}); } }

【CrashHandler for android】