本身定義一個用於捕獲全局異常的類,繼承自 Thread.UncaughtException:java
給此類(CrashHandler)設計一個單例:
android
繼承UncaughtException後實現 uncaughtException(Thread thread, Throwable ex) 方法服務器
自定義抓取異常的處理操做: handleException(Throwable ex)
app
代碼以下:ide
public class CrashHandler implements Thread.UncaughtExceptionHandler { private static final String TAG = "CrashHandler"; private Thread.UncaughtExceptionHandler defaultHandler; private Context context; private DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss"); //用來存儲設備信息和異常信息 private Map<String, String> infos = new HashMap<String, String>(); //建立CrashHandler實例(單例模式); private static CrashHandler instance = new CrashHandler(); public static CrashHandler getInstance() { return instance; } /** * 私有化構造器保證只有一個對象 */ private CrashHandler() { } /** * 初始化 * * @param context */ public void init(Context context) { this.context = context; //獲取系統默認的uncaughtException處理器 defaultHandler = Thread.getDefaultUncaughtExceptionHandler(); //設置crashhandler爲程序默認的處理器 Thread.setDefaultUncaughtExceptionHandler(this); } /** * 當UncaughtException發生時會轉入該函數來處理 * * @param thread * @param ex */ @Override public void uncaughtException(Thread thread, Throwable ex) { if (!handleException(ex) && defaultHandler != null) { //若是用戶沒有處理則讓系統默認的異常處理器來處理 defaultHandler.uncaughtException(thread, ex); }else { try { Thread.sleep(3000); } catch (InterruptedException e) { Log.e(TAG, "uncaughtException: error",e ); } //退出程序 Process.killProcess(0); android.os.Process.killProcess(android.os.Process.myPid()); System.exit(1);//非正常退出; } } /** * 自定義錯誤處理,手機錯誤信息,發送錯誤拔高等操做均在此完成 * * @param ex * @return true; 若是處理了該異常信息; 不然返回false */ private boolean handleException(Throwable ex) { if (ex == null) { return false; } //使用Toast來顯示異常信息 new Thread() { @Override public void run() { Looper.prepare(); Toast.makeText(context, "很抱歉,程序出現異常,即將退出", Toast.LENGTH_SHORT).show(); Looper.loop(); } }.start(); //手機設備參數信息; collectDeviceInfo(context); //保存日誌文件: saveCrashInfo2File(ex); return true; } /** * 保存錯誤信息到文件中 * @param ex * @return 返回文件名稱,便於將文件傳送到服務器 */ 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); String fileName = null; try { long timestamp = System.currentTimeMillis(); String time = dateFormat.format(new Date()); fileName = "crash-" + time + "-" + timestamp + ".loge"; 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 (IOException e) { Log.e(TAG, "saveCrashInfo2File: an error occured while writing file", e); } return null; } /** * 手機設備參數信息 * * @param context */ private void collectDeviceInfo(Context context) { try { PackageManager packageManager = context.getPackageManager(); PackageInfo packageInfo = packageManager.getPackageInfo(context.getPackageName(), PackageManager.GET_ACTIVITIES); if (packageInfo != null) { String versinName = packageInfo.versionName == null ? "null" : packageInfo.versionName; String versionCode = packageInfo.versionCode + ""; infos.put("versionName", versinName); infos.put("versionCode", versionCode); } } catch (PackageManager.NameNotFoundException e) { Log.e(TAG, "an error occored when collect package info", e); } Field[] declaredFields = Build.class.getDeclaredFields(); for (Field field : declaredFields) { try { field.setAccessible(true); infos.put(field.getName(), field.get(null).toString()); Log.d(TAG, field.getName() + ":" + field.get(null)); } catch (IllegalAccessException e) { Log.e(TAG, "collectDeviceInfo: an error occured when collect crash info", e); } } } }
固然不要忘了在Application裏面初始化:函數
App Application { onCreate() { .onCreate(); CrashHandler crashHandler = CrashHandler.(); crashHandler.init(getApplicationContext()); } }
記得在menifest.xml給App添加 name
oop
文章轉自 http://blog.csdn.net/jdsjlzx/article/details/7606423
ui