/**
* UncaughtException處理類,當程序發生Uncaught異常的時候,由該類來接管程序,並記錄發送錯誤報告.
*
* 需要在Application中註冊,爲了要在程序啓動器就監控整個程序。
* CrashHandler.getInstanc().init(this);
*/
public class CrashHandler implements Thread.UncaughtExceptionHandler {
public static final String TAG = "CrashHandler";
//系統默認的UncaughtException處理類
private Thread.UncaughtExceptionHandler mDefaultHandler;
//CrashHandler實例
private static CrashHandler instance;
//程序的Context對象
private Context mContext;
//用來存儲設備信息和異常信息
private Map<String, String> infos = new HashMap<String, String>();
//用於格式化日期,作爲日誌文件名的一部分
private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
/** 保證只有一個CrashHandler實例 */
private CrashHandler() {}
/** 獲取CrashHandler實例 ,單例模式 */
public static CrashHandler getInstance() {
if (instance == null) {
synchronized (CrashHandler.class) {
if (instance == null) {
synchronized (CrashHandler.class) {
instance = new CrashHandler();
}
}
}
}
return instance;
}
/**
* 初始化
*/
public void init(Context context) {
mContext = context;
//獲取系統默認的UncaughtException處理器
mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
//設置該CrashHandler爲程序的默認處理器
Thread.setDefaultUncaughtExceptionHandler(this);
}
/**
* 當UncaughtException發生時會轉入該函數來處理
*/
@Override
public void uncaughtException(Thread thread, Throwable ex) {
if (!handleException(ex) && mDefaultHandler != null) {
//如果用戶沒有處理則讓系統默認的異常處理器來處理
mDefaultHandler.uncaughtException(thread, ex);
} else {
// 已經人爲處理,系統自己退出
try {
Thread.sleep(3000);
} catch (InterruptedException e1) {
e1.printStackTrace();
}
Locator_Application.getInstance().finishAll();
}
}
/*private CountDownTimer countDownTimer = new CountDownTimer(3000, 1000) {
@Override
public void onTick(long millisUntilFinished) {
}
@Override
public void onFinish() {
//退出程序
Locator_Application.getInstance().finishAll();
}
};*/
/**
* 自定義錯誤處理,收集錯誤信息 發送錯誤報告等操作均在此完成.
*
* @param ex
* @return true:如果處理了該異常信息;否則返回false.
*/
private boolean handleException(Throwable ex) {
if (ex == null) {
return false;
}
//收集設備參數信息
collectDeviceInfo(mContext);
//使用Toast來顯示異常信息
new Thread() {
@Override
public void run() {
Looper.prepare();
Toast.makeText(mContext, "很抱歉,程序出現異常,即將退出.", Toast.LENGTH_SHORT).show();
Looper.loop();
}
}.start();
//保存日誌文件
saveCatchInfo2File(ex);
return true;
}
/**
* 收集設備參數信息
* @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 (PackageManager.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());
Log.d(TAG, field.getName() + " : " + field.get(null));
} catch (Exception e) {
Log.e(TAG, "an error occured when collect crash info", e);
}
}
}
/**
* 保存錯誤信息到文件中
*
* @param ex
* @return 返回文件名稱,便於將文件傳送到服務器
*/
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 (SDCardUtils.isSDCardEnable()) {
String path = SDCardUtils.getSDCardPaths(false).get(0) + "/miwa/crash/";
File dir = new File(path);
if (!FileUtils.createOrExistsDir(dir)) { // 判斷目錄是否存在,不存在則判斷是否創建成功
Logger.e(dir + "目錄創建失敗");
return "";
}
FileOutputStream fos = new FileOutputStream(path + fileName);
fos.write(sb.toString().getBytes());
//發送給開發人員
sendCrashLog2PM(path+fileName);
fos.close();
}
return fileName;
} catch (Exception e) {
Log.e(TAG, "an error occured while writing file...", e);
}
return null;
}
/**
* 將捕獲的導致崩潰的錯誤信息發送給開發人員
*
* 目前只將log日誌保存在sdcard 和輸出到LogCat中,並未發送給後臺。
*/
private void sendCrashLog2PM(String fileName){
if(!new File(fileName).exists()){
Toast.makeText(mContext, "日誌文件不存在!", Toast.LENGTH_SHORT).show();
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;
//由於目前尚未確定以何種方式發送,所以先打出log日誌。
Log.i("info", s.toString());
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{ // 關閉流
try {
reader.close();
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}