自定义异常类
- application （全局注册异常类）
package com.mrko.basic;
import android.app.Application;
import utils.MyException;
/**
* Author: Mrko
* Date: 2017/8/17
* Description：
*/
public class MyApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
MyException.getInstance().init(this);
}
}
- MyException (异常类)
package utils;
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: Mrko
* Date: 2017/8/17
* Description：
*/
public class MyException implements Thread.UncaughtExceptionHandler {
private static final String CRASH = "crash";
private static final String TAG = "MyException";
private static final String CREAT_FILE_NAME = "creat_file_name";
private Context mContext;
private Thread.UncaughtExceptionHandler mDefultExceptionHanlder;
private static MyException mInstance;
private MyException() {
}
public static MyException getInstance() {
if (mInstance == null) {
synchronized (MyException.class) {
if (mInstance == null) {
mInstance = new MyException();
}
}
}
return mInstance;
}
public void init(Context context) {
this.mContext = context;
Thread.currentThread().setUncaughtExceptionHandler(this);
mDefultExceptionHanlder = Thread.currentThread().getUncaughtExceptionHandler();
}
@Override
public void uncaughtException(Thread t, Throwable e) {
Log.e(TAG, "捕获到异常了");
mDefultExceptionHanlder.uncaughtException(t, e);
//写入文件 1，手机信息。2，应用信息包名版本。 3，崩溃的详细信息。 4，保存当前文件
String crashFileName = saveInfoToSD(e);
Log.e(TAG, "FileName-->" + crashFileName);
cacheCrashFile(crashFileName);
}
public void cacheCrashFile(String crashFileName) {
SharedPreferences sp = mContext.getSharedPreferences(CRASH, Context.MODE_PRIVATE);
sp.edit().putString(CREAT_FILE_NAME, crashFileName).commit();
}
public File getCrashFile() {
String crashFileName = mContext.getSharedPreferences(CRASH, Context.MODE_APPEND).getString(CREAT_FILE_NAME, "");
return new File(crashFileName);
}
/**
* 保存到文件的信息
*
* @param e
* @return
*/
private String saveInfoToSD(Throwable e) {
String fileName = null;
StringBuffer sb = new StringBuffer();
//1，应用信息包名版本 ,2,手机信息。
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");
}
//3，崩溃的详细信息。
sb.append(obtainExceptioninfo(e));
// 4，保存当前文件
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
File dir = new File(mContext.getFilesDir() + File.separator + CRASH + File.separator);
if (dir.exists()) {
deleteDir(dir);
}
if (!dir.exists()) {
dir.mkdir();
}
fileName = dir.toString() + File.separator + getAssignTime("yyyy_MM_dd_HH_mm_ss") + ".txt";
try {
FileOutputStream fos = new FileOutputStream(fileName);
fos.write(fileName.toString().getBytes());
fos.flush();
fos.close();
} catch (Exception e1) {
e1.printStackTrace();
}
}
return fileName;
}
/**
* 获取存入上传异常的上送 手机的信息
*
* @param context
* @return
*/
private HashMap<String, String> obtainSimpleInfo(Context context) {
HashMap<String, String> map = new HashMap<String, String>();
PackageManager mPackageManager = context.getPackageManager();//获得包管理工具
PackageInfo mPackageInfo = null;//定义一个包信息
try {
// 包信息就可以通过包的管理工具去得到包信息的实例、这样就可以调用包信息里的信息了。
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);
//需要获取手机信息
map.put("MOBLE_INFO", getMobleInfo());
return map;
}
/**
* 获取手机信息
* 通过反射去拿到Build 类中的数据了
*
* @return 返回String 手机信息
*/
private String getMobleInfo() {
StringBuffer info = new StringBuffer();
try {
//field意识是字段、
Field[] fields = Build.class.getDeclaredFields();
for (Field field : fields) {
field.setAccessible(true);
String name = field.getName();
String value = field.get(null).toString();
info.append(name + "*" + value + "\n");
}
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return info.toString();
}
//崩溃的详细信息。
private String obtainExceptioninfo(Throwable e) {
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
e.printStackTrace(printWriter);
printWriter.close();
return stringWriter.toString();
}
private boolean deleteDir(File dir) {
if (dir.isDirectory()) {
File[] children = dir.listFiles();
for (File child : children) {
child.delete();
}
}
return true;
}
private String getAssignTime(String dateFormatStr) {
DateFormat dateFormat = new SimpleDateFormat(dateFormatStr);
Long currentTime = System.currentTimeMillis();
return dateFormat.format(currentTime);
}
}
- BaseActivity父类进行捕获
//自定义异常类
File file = MyException.getInstance().getCrashFile();
if (file.exists()) {
try {
InputStreamReader isr = new InputStreamReader(new FileInputStream(file));
int len = 0;
char[] chars = new char[1024];
while ((len = isr.read(chars)) != -1) {
String message = new String(chars, 0, len);
Log.e("mrko",message);
}
} catch (Exception e) {
e.printStackTrace();
}
}
- 梳理思路
-
集成全局的Thread.UncaughtExceptionHandler类，实现uncaughtException构造方法。并提供给外界获取保存异常文件的方法。
-
uncaughtException类中进行四步的操作： a. 手机信息。b. 应用信息包名版本。 c. 崩溃的详细信息。 d. 保存当前文件
-
a.保存手机信息是通过反射build类来进行获取变量和值的。
-
b.通过packageInfo和packageManger来获取的包中的信息
-
c.将默认的异常信息也添加到StringBuffer中
-
d.保存获取到的信息、
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