异常类捕捉
/**
* 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. 需要在Application中注册，为了要在程序启动器就监控整个程序。
*/
public class CrashHandler implements UncaughtExceptionHandler {
/** TAG */
public static final String TAG = "CrashHandler";
/** 系统默认的UncaughtException处理类 */
private Thread.UncaughtExceptionHandler mDefaultHandler;
/** CrashHandler实例 */
privatestatic CrashHandler mCrashHandler;
/** 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>();
/** 用于格式化日期,作为日志文件名的一部分 */
private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
/**
* 私有构造函数
*/private CrashHandler() {
}
/**
* 获取CrashHandler实例 ,单例模式
*
* @return
* @since V1.0
*/public static CrashHandler getInstance() {
if (mCrashHandler == null)
mCrashHandler = new CrashHandler();
return mCrashHandler;
}
/**
* 初始化
*
* @param context
* @since V1.0
*/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
publicvoid 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 {
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
CLog.e(TAG, "uncaughtException() InterruptedException:" + e);
}
// 退出程序
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(1);
}
}
/**
* 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.
* @since V1.0
*/privateboolean handleException(Throwable ex) {
if (ex == null) {
returnfalse;
}
// 收集设备参数信息
collectDeviceInfo(mContext);
// 使用Toast来显示异常信息new Thread() {
@Override
publicvoid run() {
Looper.prepare();
Toast.makeText(mContext, "很抱歉,程序出现异常,即将退出.",Toast.LENGTH_SHORT).show();
Looper.loop();
}
}.start();
// 保存日志文件
saveCatchInfo2File(ex);
returntrue;
}
/**
* 收集设备参数信息
*
* @param ctx
* @since V1.0
*/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) {
CLog.e(TAG, "collectDeviceInfo() an error occured when collect package info NameNotFoundException:", e);
}
Field[] fields = Build.class.getDeclaredFields();
for (Field field : fields) {
try {
field.setAccessible(true);
infos.put(field.getName(), field.get(null).toString());
CLog.d(TAG, field.getName() + " : " + field.get(null));
} catch (Exception e) {
CLog.e(TAG, "collectDeviceInfo() an error occured when collect crash info Exception:", 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 saveCatchInfo2File(Throwable ex) {
StringBuffer sb = new StringBuffer();
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);
try {
long timestamp = System.currentTimeMillis();
String time = formatter.format(new Date());
String fileName = "crash-" + time + "-" + timestamp + ".log";
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
String path = FilePathUtil.getiVMSDirPath() + "/crash/";
File dir = new File(path);
if (!dir.exists()) {
dir.mkdirs();
}
FileOutputStream fos = new FileOutputStream(path + fileName);
fos.write(sb.toString().getBytes());
// 发送给开发人员
sendCrashLog2PM(path + fileName);
fos.close();
}
return fileName;
} catch (Exception e) {
CLog.e(TAG, "saveCatchInfo2File() an error occured while writing file... Exception:", e);
}
returnnull;
}
/**
* 将捕获的导致崩溃的错误信息发送给开发人员 目前只将log日志保存在sdcard 和输出到LogCat中，并未发送给后台。
*
* @param fileName
* @since V1.0
*/privatevoid sendCrashLog2PM(String fileName) {
if (!new File(fileName).exists()) {
CLog.e(TAG, "sendCrashLog2PM() 日志文件不存在");
return;
}
FileInputStream fis = null;
BufferedReader reader = null;
String s = null;
try {
fis = new FileInputStream(fileName);
reader = new BufferedReader(new InputStreamReader(fis, "GBK"));
while (true) {
s = reader.readLine();
if (s == null)
break;
// 由于目前尚未确定以何种方式发送，所以先打出log日志。
Log.e(TAG, s);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally { // 关闭流try {
reader.close();
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
