缘由
提供给老外的一个APP测试过程中出现异常，APP奔溃，千里之隔，时差有别，很绝望。。。只能再搞一个抓取日志的功能分析问题所在，基于懒人思想，先查，然后整合总结。有了下面的东西。
支持原作
我是从这里搬过来的，之后只做一个保留文件处的小修改而已：https://blog.csdn.net/omnispace/article/details/79833862
感谢大佬！感谢大佬！感谢大佬！
小提示
1.类中有一个方法getCrashFile（）是用来获取这个错误日志，获取后你就可以为所欲为。。。
2.CrashHandler.getInstance().init(this);在Application的中调用。。
直接上代码
import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Environment;
import android.util.Log;
import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.lang.reflect.Field;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.HashMap;
import java.util.Map;
/**
* Author: 蔡小树
* Time: 2018/12/11 17:26
* Description: 自己写的错误日志抓取工具
*/
public class CrashHandler implements Thread.UncaughtExceptionHandler {
private static CrashHandler crashUtils;
private Context mContext;
private Thread.UncaughtExceptionHandler mDefaultHandler;
private static final String TAG = "CrashHandler";
private CrashHandler() {
}
public static CrashHandler getInstance() {
if (crashUtils == null) {
crashUtils = new CrashHandler();
}
return crashUtils;
}
/**
* 初始化
*
* @param context
*/
public void init(Context context) {
mContext = context;
//获取系统默认的UncaughtException
mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
//将自己的Crash放进去
Thread.setDefaultUncaughtExceptionHandler(this);
}
@Override
public void uncaughtException(Thread t, Throwable ex) {
Log.e(TAG, "捕捉到了异常");
// 1. 获取信息
// 1.1 崩溃信息
// 1.2 手机信息
// 1.3 版本信息
// 2.写入文件
String crashFileName = saveInfoToSD(ex);
Log.e(TAG, "fileName --> " + crashFileName);
// 3. 缓存崩溃日志文件
cacheCrashFile(crashFileName);
// 系统默认处理
mDefaultHandler.uncaughtException(t, ex);
}
/**
* 缓存崩溃日志文件
*
* @param fileName
*/
private void cacheCrashFile(String fileName) {
SharedPreferences sp = mContext.getSharedPreferences("crash", Context.MODE_PRIVATE);
sp.edit().putString("CRASH_FILE_NAME", fileName).commit();
}
/**
* 获取崩溃文件名称
*
* @return
*/
public File getCrashFile() {
String crashFileName = mContext.getSharedPreferences("crash",
Context.MODE_PRIVATE).getString("CRASH_FILE_NAME", "");
return new File(crashFileName);
}
/**
* 保存获取的 软件信息，设备信息和出错信息保存在SDcard中
*
* @param ex
* @return
*/
private String saveInfoToSD(Throwable ex) {
String fileName = null;
StringBuffer sb = new StringBuffer();
for (Map.Entry<String, String> entry : obtainSimpleInfo(mContext)
.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
sb.append(key).append(" = ").append(value).append("\n");
}
sb.append(obtainExceptionInfo(ex));
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
try {
//这里我并不需要存很多错误日志，只能存一个
String path = mContext.getExternalFilesDir("log").getPath();
File dir = new File(path);
if (!dir.exists()) {
dir.mkdirs();
} else {
File[] files = dir.listFiles();
for (File file :
files) {
file.delete();
}
}
FileOutputStream fos = new FileOutputStream(path + "/error" + getAssignTime("yyyyMMdd-HH:mm") + ".log", true);
fos.write(sb.toString().getBytes());
fos.flush();
fos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return fileName;
}
/**
* 返回当前日期根据格式
**/
private String getAssignTime(String dateFormatStr) {
DateFormat dataFormat = new SimpleDateFormat(dateFormatStr);
long currentTime = System.currentTimeMillis();
return dataFormat.format(currentTime);
}
/**
* 获取一些简单的信息,软件版本，手机版本，型号等信息存放在HashMap中
*
* @return
*/
private HashMap<String, String> obtainSimpleInfo(Context context) {
HashMap<String, String> map = new HashMap<>();
PackageManager mPackageManager = context.getPackageManager();
PackageInfo mPackageInfo = null;
try {
mPackageInfo = mPackageManager.getPackageInfo(
context.getPackageName(), PackageManager.GET_ACTIVITIES);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
map.put("versionName", mPackageInfo.versionName);
map.put("versionCode", "" + mPackageInfo.versionCode);
map.put("MODEL", "" + Build.MODEL);
map.put("SDK_INT", "" + Build.VERSION.SDK_INT);
map.put("PRODUCT", "" + Build.PRODUCT);
map.put("MOBLE_INFO", getMobileInfo());
return map;
}
/**
* Cell phone information
*
* @return
*/
public static String getMobileInfo() {
StringBuffer sb = new StringBuffer();
try {
Field[] fields = Build.class.getDeclaredFields();
for (Field field : fields) {
field.setAccessible(true);
String name = field.getName();
String value = field.get(null).toString();
sb.append(name + "=" + value);
sb.append("\n");
}
} catch (Exception e) {
e.printStackTrace();
}
return sb.toString();
}
/**
* 获取系统未捕捉的错误信息
*
* @param throwable
* @return
*/
private String obtainExceptionInfo(Throwable throwable) {
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
throwable.printStackTrace(printWriter);
printWriter.close();
return stringWriter.toString();
}
}
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