捕獲android程式崩潰日誌，捕獲android日誌

捕獲android程式崩潰日誌，捕獲android日誌

主要類：

package com.example.callstatus;import java.io.File;import java.io.FileOutputStream;import java.io.PrintWriter;import java.io.StringWriter;import java.lang.Thread.UncaughtExceptionHandler;import java.lang.reflect.Field;import java.net.UnknownHostException;import java.text.DateFormat;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import java.util.Map;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.telephony.TelephonyManager;import android.text.TextUtils;import android.util.Log;import android.widget.Toast;/** * 捕獲android程式崩潰日誌<br> * UncaughtException處理類,當程式發生Uncaught異常的時候,有該類來接管程式. *  * @author PMTOAM *  */@SuppressLint("SimpleDateFormat")public class CrashHandler implements UncaughtExceptionHandler{public static final String TAG = CrashHandler.class.getCanonicalName();// 系統預設的UncaughtException處理類private Thread.UncaughtExceptionHandler mDefaultHandler;// CrashHandler執行個體private static CrashHandler INSTANCE = new CrashHandler();// 程式的Context對象private Context mContext;// 用來存放裝置資訊和異常資訊private Map<String, String> infos = new HashMap<String, String>();// 用于格式化日期,作為記錄檔名的一部分private DateFormat formatter = new SimpleDateFormat("yyyyMMdd_HHmmss");/** * 保證只有一個執行個體 */private CrashHandler(){}/** * 擷取執行個體 ，單例模式 */public static CrashHandler getInstance(){return INSTANCE;}/** * 初始化 *  * @param context */public void init(Context context){mContext = context;// 擷取系統預設的UncaughtException處理器mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();// 設定該CrashHandler為程式的預設處理器Thread.setDefaultUncaughtExceptionHandler(this);}/** * 當UncaughtException發生時會轉入該函數來處理 */@Overridepublic void uncaughtException(Thread thread, Throwable ex){if (!handleException(ex) && mDefaultHandler != null){// 如果使用者沒有處理則讓系統預設的異常處理器來處理mDefaultHandler.uncaughtException(thread, ex);}else{try{Thread.sleep(3000);}catch (InterruptedException e){Log.e(TAG, "error : ", e);}// 退出程式android.os.Process.killProcess(android.os.Process.myPid());System.exit(1);}}/** * 自訂錯誤處理,收集錯誤資訊 發送錯誤報表等操作均在此完成. *  * @param ex * @return true:如果處理了該異常資訊;否則返回false. */private boolean handleException(Throwable ex){if (ex == null){return false;}// 使用Toast來顯示異常資訊new Thread(){@Overridepublic void run(){Looper.prepare();Toast.makeText(mContext, "很抱歉，程式出現異常。", Toast.LENGTH_LONG).show();Looper.loop();}}.start();// 收集裝置參數資訊collectDeviceInfo(mContext);// 儲存記錄檔String str = saveCrashInfo2File(ex);Log.e(TAG, str);return false;}/** * 收集裝置參數資訊 *  * @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);}}}/** * 儲存錯誤資訊到檔案中 *  * @param ex * @return 返迴文件名稱,便於將檔案傳送到伺服器 */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");}sb.append("\n" + getStackTraceString(ex));try{String time = formatter.format(new Date());TelephonyManager mTelephonyMgr = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);String imei = mTelephonyMgr.getDeviceId();if (TextUtils.isEmpty(imei)){imei = "unknownimei";}String fileName = "CRS_" + time + "_" + imei + ".txt";File sdDir = null;if (Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))sdDir = Environment.getExternalStorageDirectory();File cacheDir = new File(sdDir + File.separator + "dPhoneLog");if (!cacheDir.exists())cacheDir.mkdir();File filePath = new File(cacheDir + File.separator + fileName);FileOutputStream fos = new FileOutputStream(filePath);fos.write(sb.toString().getBytes());fos.close();return fileName;}catch (Exception e){Log.e(TAG, "an error occured while writing file...", e);}return null;}/** * 擷取捕捉到的異常的字串 */public static String getStackTraceString(Throwable tr){if (tr == null){return "";}Throwable t = tr;while (t != null){if (t instanceof UnknownHostException){return "";}t = t.getCause();}StringWriter sw = new StringWriter();PrintWriter pw = new PrintWriter(sw);tr.printStackTrace(pw);return sw.toString();}}

使用方法：

package com.example.callstatus;import android.app.Application;public class MyApplication extends Application{@Overridepublic void onCreate(){super.onCreate();CrashHandler crashHandler = CrashHandler.getInstance();crashHandler.init(getApplicationContext());}}

要求的權限：

<uses-permission android:name="android.permission.READ_PHONE_STATE" /><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />

android 程式報錯後產生的日誌怎查看

如果程式出現強制關閉的錯誤，一般系統會保留出錯log，但是你需要root之後才能看得到，也可以運行sdk內建的debug工具：ddms.bat來看日誌。
如果你是開發人員，eclipse中就有logcat來看日誌
 
當程式崩潰怎擷取崩潰日記

串連裝置到電腦上，在xcode功能表列選擇window -->organizer--->Devices--->Device Logs