Android全局异常处理

*
* 要在Application初始化----记得要在Manifest.xml中的application --android：name=".Crashapplicastion"
* private CrashHandler mCrashHandler；
*
* onCreate------》 mCrashHandler = CrashHandler.getInstance（）；-----mCrashHandler.init(this);
*/

public class CrashHandler implements Thread.UncaughtExceptionHandler {
private Context mContext;

private static CrashHandler mInstance;

//默认处理异常
private Thread.UncaughtExceptionHandler mDefaultHandler;

//用来存储设备信息，异常信息
private Map mInfo = new HashMap<>();

//文件日期格式
private DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

public CrashHandler() {
}

/**
* 单利
*
* @return
*/
public static CrashHandler getmInstance() {
if (mInstance == null) {
synchronized (CrashHandler.class) {
if (mInstance == null) {
mInstance = new CrashHandler();
}
}
}
return mInstance;
}

/**
* 初始化
*
* @param context
*/
public void init(Context context) {
mContext = context;
mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
Thread.setDefaultUncaughtExceptionHandler(this);
}

@Override
public void uncaughtException(Thread t, Throwable e) {
// 1，收集错误信息
// 2，保存错误信息
// 3，上传到服务果自己没有处
if (!handleExcepotion(e)) {
//未处理，调用系统，默认的处理器处理
if (mDefaultHandler != null) {
mDefaultHandler.uncaughtException(t, e);
}

} else {
//已经人为处理
// 休眠一秒退出进程
try {
Thread.sleep(1000);
} catch (InterruptedException e1) {
e1.printStackTrace();
}
Process.killProcess(Process.myPid());
System.exit(1);

}

/**
* 人为处理异常
*
* @param e
* @return true ：已经处理 false ：没有处理
*/
private boolean handleExcepotion(Throwable e) {

if (e == null) {
return false;
}
new Thread() {
@Override
public void run() {
Looper.prepare();
// "UncaugthException"是给客户显示的内容这个可以自己定义显示什么，也可以让产品经理给的文案来设置
Toast.makeText(mContext, "UncaugthException", Toast.LENGTH_SHORT).show();
Looper.loop();
}
}.start();

// 收集错误信息
collectErrorInfo();
// 保存错误信息
saveErrorInfo(e);

return false;
}

/**
* 保存错误信息
*/
private void saveErrorInfo(Throwable e) {

StringBuffer stringBuffer = new StringBuffer();
for (Map.Entry entry : mInfo.entrySet()) {
String keyName = entry.getKey();
String value = entry.getValue();
stringBuffer.append(keyName + "=" + value + "\n");
}

Writer writer = new StringWriter();
PrintWriter printWriter = new PrintWriter(writer);
e.printStackTrace(printWriter);
Throwable cause = e.getCause();
while(cause !=null){
cause.printStackTrace(printWriter);
cause = e.getCause();
}
printWriter.close();

String result = writer.toString();
stringBuffer.append(result);

long curTime = System.currentTimeMillis();
String time = dateFormat.format(new Date());
String fileName = "crash-"+time +"-"+curTime+".log";
//判断有没有SD卡
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
String path ="/sdcard/crash";
File dir =new File(path);
if (!dir.exists()){
dir.mkdir();
}
FileOutputStream fos = null;
try {
fos = new FileOutputStream(path+fileName);

fos.write(stringBuffer.toString().getBytes());

} catch (FileNotFoundException e1) {
e1.printStackTrace();
}catch (IOException e1) {
e1.printStackTrace();
}finally {
try {
fos.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}

}
}

/**
* 收集错误信息
*/
private void collectErrorInfo() {
// 当前的包名是否是我应用的包名
PackageManager pm = mContext.getPackageManager();

try {
PackageInfo pi = pm.getPackageInfo(mContext.getPackageName(), PackageManager.GET_ACTIVITIES);

if (pi != null) {
String versionName = TextUtils.isEmpty(pi.versionName) ? "未设置版本名称" : pi.versionName;

String verSionCode = pi.versionCode + "";

mInfo.put("versioonName", versionName);
mInfo.put("versionCode", verSionCode);
}

Field[] fields = Build.class.getFields();
if (fields != null && fields.length > 0) {
for (Field field : fields) {
field.setAccessible(true);
try {
mInfo.put(field.getName(), field.get(null).toString());
} catch (IllegalAccessException e) {
e.printStackTrace();
}

}
}
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
//

}

/**
* 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。
*/
@SuppressLint("SimpleDateFormat")
public class DLCrashHandler 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 */
private static DLCrashHandler 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 infos = new HashMap();
/** 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 DLCrashHandler() {

}

/**
* 获取CrashHandler实例 ,单例模式
*
* @return
* @since V1.0
*/
public static DLCrashHandler getInstance() {
if (mCrashHandler == null)
mCrashHandler = new DLCrashHandler();
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
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 {
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
DLLogUtil.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
*/
private boolean handleException(Throwable ex) {
if (ex == null) {
return false;
}

// 收集设备参数信息
collectDeviceInfo(mContext);

// 使用Toast来显示异常信息
new Thread() {
@Override
public void run() {
Looper.prepare();
DLToastUtil.showToastShort(mContext, "很抱歉,程序出现异常,即将退出.");
Looper.loop();
}
}.start();

// 保存日志文件
saveCatchInfo2File(ex);
return true;
}

/**
* 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) {
Log.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());
DLLogUtil.d(TAG, field.getName() + " : " + field.get(null));
} catch (Exception e) {
Log.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 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 = DLFolderManager.getCrashLogFolder().getAbsolutePath();
File dir = new File(path,fileName);
FileOutputStream fos = new FileOutputStream(dir);
fos.write(sb.toString().getBytes());
// 发送给开发人员
sendCrashLog2PM(dir.getAbsolutePath());
fos.close();
}
return fileName;
} catch (Exception e) {
Log.e(TAG, "saveCatchInfo2File() an error occured while writing file... Exception:", e);
}
return null;
}

/**
* 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
*/
private void sendCrashLog2PM(String fileName) {
if (!new File(fileName).exists()) {
Log.e(TAG, "sendCrashLog2PM() 日志文件不存在");
return;
}
FileInputStream fis = null;
BufferedReader reader = null;
String s = null;
try {

   DLLogUtil.d(fileName);

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();
}
}
}
}

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