今天测试遇到崩溃,而我又没办法查看,于是老司机教了我一招。
下面是CrashHandler类:
package com.bbk.bfcupload.bfcuploadtestdemo.util;
import android.annotation.SuppressLint;
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 com.eebbk.bfc.uploadsdk.uploadmanage.LogUtils;
import java.io.File;
import java.io.FileNotFoundException;
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.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
/**
* UncaughtException处理类,当程序发生Uncaught异常的时候,由该类来接管程序,并记录发送错误报告.
*
* @author way
*/
public class CrashHandler implements UncaughtExceptionHandler {
private Context mContext;
private UncaughtExceptionHandler mDefaultHandler; // 系统默认的UncaughtException处理类
private static CrashHandler INSTANCE = new CrashHandler(); // CrashHandler实例
private Map<String, String> info = new HashMap<String, String>(); // 用来存储设备信息和异常信息
/**
* 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;
}
/**
* 初始化
*
* @param context
*/
public void init(Context context) {
mContext = context.getApplicationContext();
mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();// 获取系统默认的UncaughtException处理器
Thread.setDefaultUncaughtExceptionHandler(this);// 设置该CrashHandler为程序的默认处理器
}
/**
* 当UncaughtException发生时会转入该重写的方法来处理
*/
@Override
public void uncaughtException(Thread thread, Throwable ex) {
if (mDefaultHandler != null) {
handleException(ex);// 如果自定义的没有处理则让系统默认的异常处理器来处理
mDefaultHandler.uncaughtException(thread, ex);// 退出程序
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 异常信息 <a
* href="\"http://www.eoeandroid.com/home.php?mod=space&uid=7300\""
* target="\"_blank\"">@return</a> true 如果处理了该异常信息;否则返回false.
*/
public boolean handleException(final Throwable ex) {
if (ex == null) return false;
LogUtils.e(ex, " uncaught exception !");
// 收集设备参数信息
collectDeviceInfo(mContext);
// 保存日志文件
final String exString = getCrashInfoString(ex);
saveCrashInfo2File(exString, mContext);
return true;
}
/**
* 收集设备参数信息
*
* @param context
*/
public void collectDeviceInfo(Context context) {
try {
PackageManager pm = context.getPackageManager();// 获得包管理器
PackageInfo pi = pm.getPackageInfo(context.getPackageName(), PackageManager.GET_ACTIVITIES);// 得到该应用的信息,即主Activity
if (pi != null) {
String versionName = pi.versionName == null ? "null" : pi.versionName;
String versionCode = pi.versionCode + "";
info.put("versionName", versionName);
info.put("versionCode", versionCode);
}
} catch (NameNotFoundException e) {
LogUtils.e("Error: " + e);
}
Field[] fields = Build.class.getDeclaredFields();// 反射机制
for (Field field : fields) {
try {
field.setAccessible(true);
info.put(field.getName(), field.get("").toString());
} catch (IllegalArgumentException e) {
LogUtils.e("Error: " + e);
} catch (IllegalAccessException e) {
LogUtils.e("Error: " + e);
}
}
}
private String getCrashInfoString(Throwable ex) {
StringBuffer sb = new StringBuffer();
for (Map.Entry<String, String> entry : info.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
sb.append(key).append("=").append(value).append("\r\n");
}
Writer writer = new StringWriter();
PrintWriter pw = new PrintWriter(writer);
ex.printStackTrace(pw);
Throwable cause = ex.getCause();
// 循环着把所有的异常信息写入writer中
while (cause != null) {
cause.printStackTrace(pw);
cause = cause.getCause();
}
pw.close();// 记得关闭
String result = writer.toString();
sb.append(result);
return sb.toString();
}
@SuppressLint("SimpleDateFormat")
public static String saveCrashInfo2File(String exString, Context context) {
long timetamp = System.currentTimeMillis();
String time = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date());
String fileName = "-crash-" + time + "-" + timetamp + ".log";
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
try {
//File dir = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + "SynChinese");
File dir = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + ".crash" + File.separator + context.getPackageName());
if (!dir.exists()) {
dir.mkdirs();
}
File outfile = new File(dir, fileName);
FileOutputStream fos = new FileOutputStream(outfile);
fos.write(exString.getBytes());
fos.close();
return outfile.getAbsolutePath();
} catch (FileNotFoundException e) {
LogUtils.e("Error: " + e);
} catch (IOException e) {
LogUtils.e("Error: " + e);
}
}
return null;
}
}
在application里面调用:
CrashHandler.getInstance().init(this);
则遇到崩溃时会自动创建.crash文件,不过文件不可见的需要用文件管理器才可以