Android 全局異常捕獲，顯示在手機內存文件

// 全局異常捕獲
		if (LogLevel.enableLog) {
			GlobalExceptionHanlder.getInstance().register(getApplicationContext());
		}

package com.utils;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
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.Locale;
import java.util.Map;

import android.content.Context;
import android.content.Intent;
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 com.***.***.R;
import com.utils.logging.LogUtil;

/**
 * 全局異常捕獲類
 * 
 * @author Eric.wsd
 * @since 2012-5-21
 */
public class GlobalExceptionHanlder implements UncaughtExceptionHandler {

	public static String ACTION = null;

	// 系統默認的UncaughtException處理類
	private Thread.UncaughtExceptionHandler mDefaultHandler;
	// GlobalExceptionHanlder實例
	private static GlobalExceptionHanlder mHandler;
	// 程序的Context對象
	private Context mContext;
	// 用來存儲設備信息和異常信息
	private Map<String, String> infos = new HashMap<String, String>();

	// 用於格式化日期,作爲日誌文件名的一部分
	private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss", Locale.getDefault());

	// 日誌位置
	private String logPath = null;

	// 異常信息等級

	public GlobalExceptionHanlder() {

	}

	/**
	 * 註冊異常處理
	 * 
	 * @param context
	 */
	public void register(Context context) {
		mContext = context;
		// 獲取系統默認的UncaughtException處理器
		mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
		// 設置該GlobalExceptionHanlder爲程序的默認處理器
		Thread.setDefaultUncaughtExceptionHandler(this);
		ACTION = context.getString(R.string.global_exception_action);
		logPath = Environment.getExternalStorageDirectory() + context.getString(R.string.global_exception_sdcard_dir);
	}

	/** 獲取GlobalExceptionHanlder實例 ,單例模式 */
	public static GlobalExceptionHanlder getInstance() {
		if (mHandler == null) {
			mHandler = new GlobalExceptionHanlder();
		}
		return mHandler;
	}

	@Override
	public void uncaughtException(Thread thread, Throwable ex) {
		// if (!HttpUtils.isNetworkConnected(mContext)) {
		// Toast.makeText(mContext, "網絡異常，請檢查網絡設置", Toast.LENGTH_LONG).show();
		// }
		if (!handleException(ex) && mDefaultHandler != null) {
			// 如果用戶沒有處理則讓系統默認的異常處理器來處理
			mDefaultHandler.uncaughtException(thread, ex);
		} else {
			try {
				Thread.sleep(3000);
			} catch (InterruptedException e) {
				LogUtil.e("error : " + e);
			}
			systemExit();
		}
	}

	/**
	 * 退出程序
	 */
	private void systemExit() {
		Intent intent = new Intent();
		intent.setAction(GlobalExceptionHanlder.ACTION);
		android.os.Process.killProcess(android.os.Process.myPid());
		System.exit(0);
	}

	/**
	 * 檢查SD卡是否可用
	 * 
	 * @return
	 */
	public static boolean checkSDCard() {
		if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
			return true;
		else
			return false;
	}

	/**
	 * 自定義錯誤處理,收集錯誤信息 發送錯誤報告等操作均在此完成.
	 * 
	 * @param ex
	 * @return true:如果處理了該異常信息;否則返回false.
	 */
	private boolean handleException(Throwable ex) {
		if (ex == null) {
			return true;
		}
		// 使用Toast來顯示異常信息
		new Thread() {
			@Override
			public void run() {
				Looper.prepare();
				// 初始化用戶信息
				// InfoBuyerStorage.newInstance(mContext).notifyDataSetChanged();
				Looper.loop();
			}
		}.start();
		// 收集設備參數信息
		collectDeviceInfo(mContext);
		boolean isEnable = Boolean.parseBoolean(mContext.getString(R.string.global_exception_enable));
		if (isEnable)
			saveCrashInfo2File(ex);// 保存日誌文件
		// 分類處理異常
		return true;
	}

	/**
	 * 收集設備參數信息
	 * 
	 * @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) {
			LogUtil.e("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());
				LogUtil.d(field.getName() + " : " + field.get(null));
			} catch (Exception e) {
				LogUtil.e("an error occured when collect crash info" + e);
			}
		}
	}

	/**
	 * 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);
		LogUtil.e(result);// 此處如果改成Log.d()；有些手機異常會打印不出來
		FileOutputStream fos = null;
		try {
			long timestamp = System.currentTimeMillis();
			String time = formatter.format(new Date());
			String fileName = mContext.getString(R.string.app_name) + "-" + time + "-" + timestamp + ".log";
			if (checkSDCard()) {
				File dir = new File(logPath);
				if (!dir.exists()) {
					dir.mkdirs();
				}
				fos = new FileOutputStream(logPath + fileName);

				fos.write(sb.toString().getBytes());
			}
			return fileName;
		} catch (Exception e) {
			LogUtil.e("an error occured while writing file..." + e);
		} finally {
			try {
				if (fos != null) {
					fos.close();
				}
			} catch (IOException e) {
				LogUtil.e("an error occured while close file..." + e);
			}
		}
		return null;
	}

	/**
	 * 刪除所有的日誌文件
	 */
	public void clearAllLogs(final Context ctx) {
		if (checkSDCard()) {
			try {
				File file = new File(logPath);
				if (file != null && file.exists()) {
					File[] files = file.listFiles();
					for (int i = 0; i < files.length; i++) {
						files[i].delete();
					}
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * 異步刪除所有日誌文件
	 * 
	 * @param ctx
	 */
	public void asynClearAllLogs(final Context ctx) {
		new Thread() {
			public void run() {
				clearAllLogs(ctx);
			}
		}.start();
	}
}

資源文件如下：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="global_exception_action">com.utils.GlobalExceptionHanlder</string>
    <string name="global_exception_sdcard_dir">/dir/log/</string>
    <string name="global_exception_enable">true</string>
</resources>