MythouCrashHandler.java

package com.jasonchen.microlang.utils;

import android.os.Environment;
import android.text.format.DateFormat;
import android.util.Log;

import com.jasonchen.microlang.R;
import com.jasonchen.microlang.activitys.SettingActivity;
import com.jasonchen.microlang.debug.AppLogger;
import com.jasonchen.microlang.utils.file.FileManager;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;

/**
 * jasonchen
 * 15/06/03
 */
public class MythouCrashHandler implements Thread.UncaughtExceptionHandler
{
    private static final String TAG = "MythouCrashHandler---->";
    private Thread.UncaughtExceptionHandler defaultUEH;
    //构造函数，获取默认的处理方法
    public MythouCrashHandler()
    {
        this.defaultUEH = Thread.getDefaultUncaughtExceptionHandler();
    }
    //这个接口必须重写，用来处理我们的异常信息
    @Override
    public void uncaughtException(Thread thread, Throwable ex)
    {
        final Writer result = new StringWriter();
        final PrintWriter printWriter = new PrintWriter(result);
        //获取跟踪的栈信息，除了系统栈信息，还把手机型号、系统版本、编译版本的唯一标示
        StackTraceElement[] trace = ex.getStackTrace();
        StackTraceElement[] trace2 = new StackTraceElement[trace.length+3];
        System.arraycopy(trace, 0, trace2, 0, trace.length);
        trace2[trace.length+0] = new StackTraceElement("Android", "MODEL", android.os.Build.MODEL, -1);
        trace2[trace.length+1] = new StackTraceElement("Android", "VERSION", android.os.Build.VERSION.RELEASE, -1);
        trace2[trace.length+2] = new StackTraceElement("Android", "FINGERPRINT", android.os.Build.FINGERPRINT, -1);
        ex.setStackTrace(trace2);
        ex.printStackTrace(printWriter);
        String stacktrace = result.toString();
        printWriter.close();
        AppLogger.e(stacktrace);
        if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
        {
            String sdcardPath = FileManager.getLogDir();
            writeLog(stacktrace, sdcardPath);
        }
        defaultUEH.uncaughtException(thread, ex);
    }
    //写入Log信息的方法，写入到SD卡里面
    private void writeLog(String log, String name)
    {
        CharSequence timestamp = DateFormat.format("yyyyMMdd_kkmmss", System.currentTimeMillis());
        String filename = name + File.separator + timestamp + ".log";
        try
        {
            FileOutputStream stream = new FileOutputStream(filename);
            OutputStreamWriter output = new OutputStreamWriter(stream);
            BufferedWriter bw = new BufferedWriter(output);
            //写入相关Log到文件
            bw.write(log);
            bw.newLine();
            bw.close();
            output.close();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
    }

    private void buildLogSummary() {
        File cachedDir = GlobalContext.getInstance().getExternalCacheDir();
    }
}