项目中的未捕获异常处理类 记录一下 方便以后使用
package com.example.****.******;
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.util.Log;
import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
/**
* 未捕获异常处理类
*
*/
public class CrashHandler implements UncaughtExceptionHandler {
public static final String TAG = "CrashHandler";
//异常文件夹名
private static String CommonAPP_DIR="/errApp";
//异常文件名
private static String LOGNAME="/errClass.text";
// 系统默认的UncaughtException处理类
private UncaughtExceptionHandler mDefaultHandler;
// CrashHandler实例
private static CrashHandler INSTANCE = new CrashHandler();
// 程序的Context对象
private Context mContext;
// 用来存储设备信息和异常信息
private Map<String, String> infos = new HashMap<String, String>();
/** 保证只有一个CrashHandler实例 */
private CrashHandler() {
}
/** 获取CrashHandler实例 ,单例模式 */
public static CrashHandler getInstance() {
return INSTANCE;
}
/**
* 获得手机信息
*/
public Map<String, String> phoneInfo() {
if (infos.size() == 0) {
collectDeviceInfo(mContext);
}
return infos;
}
/**
* 初始化
*
* @param context
*/
public void init(Context context) {
mContext = context;
// 获取系统默认的UncaughtException处理器
mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
// 设置该CrashHandler为程序的默认处理器
Thread.setDefaultUncaughtExceptionHandler(this);
}
/**
* 当UncaughtException发生时会转入该函数来处理
*/
@Override
public void uncaughtException(Thread thread, Throwable ex) {
if (!handleException(ex) && mDefaultHandler != null) {
// 如果用户没有处理则让系统默认的异常处理器来处理
mDefaultHandler.uncaughtException(thread, ex);
} else {
//MobclickAgent.onKillProcess(mContext);
System.exit(0);
android.os.Process.killProcess(android.os.Process.myPid());
}
}
/**
* 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.
*
* @param ex
* @return true:如果处理了该异常信息;否则返回false.
*/
private boolean handleException(Throwable ex) {
if (ex == null) {
return false;
}
// 收集设备参数信息
collectDeviceInfo(mContext);
// 保存日志文件
saveCrashInfo2File(ex);
return true;
}
/**
* 获取应用目录路径
*
* @return
*/
public static String getSaveDir() {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
return Environment.getExternalStorageDirectory() + CommonAPP_DIR;
}
return Environment.getDataDirectory().getAbsolutePath()
+ CommonAPP_DIR;
}
/**
* 收集设备参数信息
*
* @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) {
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());
// LogUtils.d(TAG, field.getName() + " : " + field.get(null));
} catch (Exception e) {
Log.e(TAG, "an error occured when collect crash info"+e);
}
}
}
/**
* 保存错误信息到文件中
*
* @param ex
* @return 返回文件名称,便于将文件传送到服务器
*/
private String saveCrashInfo2File(Throwable ex) {
StringBuilder sb = new StringBuilder();
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);
System.out.println(sb);
writeLog(sb.toString(), CrashHandler.LOGNAME, false);
return CrashHandler.LOGNAME;
}
/**
* 写入日志
*/
public static void writeLog(String log, String fileName, boolean bl) {
FileOutputStream fos=null;
try {
String time = "2019-01-22";
log = time + ":" + log + "\r\n";
if (isSDCardExist()) {
File dir = new File(getSaveDir());
if (!dir.exists()) {
dir.mkdirs();
}
fos= new FileOutputStream(getSaveDir()
+ fileName, bl);
fos.write(log.getBytes());
}
} catch (Exception e) {
e.printStackTrace();
}finally {
try {
if (fos!=null){fos.close();}
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* 是否存在SD卡
*
* @return
*/
public static boolean isSDCardExist() {
boolean sdCardExist = Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED);
return sdCardExist;
}
}