app常用的封装工具类

crash处理

/**

• 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 /
  private static 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
    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) {
    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
    */
    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();
    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);
    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) {
    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);
    }
    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()) {
    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。
    CLog.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();
    }
    }
    }
    }

Dialog提醒

public static Dialog showDialog(Context ctx, int layViewID, int ThemeType) {
Dialog res = new Dialog(ctx, ThemeType);
res.setContentView(layViewID);
return res;
}

Toast提醒

public static void showToast(Context ctx, int id, String str) {
if (str == null) {
return;
}

    Toast toast = Toast.makeText(ctx, ctx.getString(id) + str, Toast.LENGTH_SHORT);
    toast.setGravity(Gravity.CENTER, 0, 0);
    toast.show();
}

public static void showToast(Context ctx, String errInfo) {
    if (errInfo == null) {
        return;
    }

    Toast toast = Toast.makeText(ctx, errInfo, Toast.LENGTH_SHORT);
    toast.setGravity(Gravity.CENTER, 0, 0);
    toast.show();
}