Java Code Examples for android.text.format.DateFormat#format()

/**
 * 使用相机拍照
 */
private void takePhoto() {

    // 图片路径
    tempPath = Environment.getExternalStorageDirectory() + "/DCIM/" + DateFormat.format("yyyyMMdd_hhmmss", Calendar.getInstance(Locale.CHINA)) + ".jpg";

    // 创建拍照时的临时文件
    File tempFile = new File(tempPath);
    try {
        if (tempFile.exists()) {
            tempFile.delete();
        }
        tempFile.createNewFile();
    } catch (IOException e) {
        e.printStackTrace();
    }

    // 指定照片保存路径（SD卡），image.jpg为一个临时文件，每次拍照后这个图片都会被替换
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    intent.putExtra("return-data", false);
    intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
    intent.putExtra("noFaceDetection", true);
    intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(tempFile));
    startActivityForResult(intent, TAKE_PICTURE);
    overridePendingTransition(R.anim.column_show, R.anim.column_bottom);
}
 

/**
 * Get the file to record to for a given remote contact. This will
 * implicitly get the current date in file name.
 * 
 * @param remoteContact The remote contact name
 * @return The file to store conversation
 */
private File getRecordFile(File dir, String remoteContact, int way) {
    if (dir != null) {
        // The file name is only to have an unique identifier.
        // It should never be used to store datas as may change.
        // The app using the recording files should rely on the broadcast
        // and on callInfo instead that is reliable.
        String datePart = (String) DateFormat.format("yy-MM-dd_kkmmss", new Date());
        String remotePart = sanitizeForFile(remoteContact);
        String fileName = datePart + "_" + remotePart;
        if (way != (SipManager.BITMASK_ALL)) {
            fileName += ((way & SipManager.BITMASK_IN) == 0) ? "_out" : "_in";
        }
        File file = new File(dir.getAbsoluteFile() + File.separator
                + fileName + ".wav");
        return file;
    }
    return null;
}
 

public void saveDataInDB(String title, String url, String body) {
    // ' (single apostrophe) doesn't work with sqlite database in insertion, instead of it, use ''(double apostrophe). tldr : store ' as '' otherwise it won't work
    title=title.replace("'","''");
    body=body.replace("'","''");
    Date date = new Date();
    CharSequence initTime = DateFormat.format("yyyy-MM-dd hh:mm:ss", date.getTime());
    String time = initTime.toString();
    DataBaseAdapter dbAdapter = new DataBaseAdapter(context);
    dbAdapter.createDatabase();
    dbAdapter.open();
    String query = "INSERT INTO webpage (title, url, desc, date) " +
            "VALUES ('" + title + "', '" + url + "', '" + body + "', '" + time + "')";
    dbAdapter.executeQuery(query);
    dbAdapter.close();
    Toast.makeText(context, "Data saved successfully", Toast.LENGTH_SHORT).show();
}
 

/**
 * 调用系统相机
 */
public void takePhoto() {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);// 调用系统相机
    new DateFormat();

    String name = DateFormat.format("yyyyMMdd_hhmmss",
            Calendar.getInstance(Locale.CHINA))
            + ".jpg";
    Uri imageUri = Uri.fromFile(new File(PATH, name));
    path = PATH + "/" + name;
    intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);

    startActivityForResult(intent, TAKE_PICTURE);
}
 

/**
 * Generates a description for a given time object. Since this
 * description will be spoken, the components are ordered by descending
 * specificity as DAY MONTH YEAR.
 *
 * @param day The day to generate a description for
 * @return A description of the time object
 */
protected CharSequence getItemDescription(int day) {
    mTempCalendar.set(mYear, mMonth, day);
    final CharSequence date = DateFormat.format(DATE_FORMAT,
            mTempCalendar.getTimeInMillis());

    if (day == mSelectedDay) {
        return getContext().getString(R.string.item_is_selected, date);
    }

    return date;
}
 

private void writeLogcat(String name) {
    CharSequence timestamp = DateFormat.format("yyyyMMdd_kkmmss", System.currentTimeMillis());
    String filename = name + "_" + timestamp + ".log";
    try {
        Logcat.writeLogcat(filename);
    } catch (IOException e) {
        Log.e(TAG, "Cannot write logcat to disk");
    }
}
 

private static double calculateWeightedAverage(List<Libre2RawValue> rawValues, long now) {
    double sum = 0;
    double weightSum = 0;
    DecimalFormat longformat = new DecimalFormat( "#,###,###,##0.00" );

    libre_calc_doku="";
    for (Libre2RawValue rawValue : rawValues) {
        double weight = 1 - ((now - rawValue.timestamp) / (double) SMOOTHING_DURATION);
        sum += rawValue.glucose * weight;
        weightSum += weight;
        libre_calc_doku += DateFormat.format("kk:mm:ss :",rawValue.timestamp) + " w:" + longformat.format(weight) +" raw: " + rawValue.glucose  + "\n" ;
       }
    return Math.round(sum / weightSum);
}
 

/**
 * Generates a description for a given virtual view.
 *
 * @param id the day to generate a description for
 * @return a description of the virtual view
 */
private CharSequence getDayDescription(int id) {
    if (isValidDayOfMonth(id)) {
        mTempCalendar.set(mYear, mMonth, id);
        return DateFormat.format(DATE_FORMAT, mTempCalendar.getTimeInMillis());
    }

    return "";
}
 

private static double calculateWeightedAverage(List<Libre2RawValue> rawValues, long now) {
    double sum = 0;
    double weightSum = 0;
    DecimalFormat longformat = new DecimalFormat( "#,###,###,##0.00" );

    libre_calc_doku="";
    for (Libre2RawValue rawValue : rawValues) {
        double weight = 1 - ((now - rawValue.timestamp) / (double) SMOOTHING_DURATION);
        sum += rawValue.glucose * weight;
        weightSum += weight;
        libre_calc_doku += DateFormat.format("kk:mm:ss :",rawValue.timestamp) + " w:" + longformat.format(weight) +" raw: " + rawValue.glucose  + "\n" ;
       }
    return Math.round(sum / weightSum);
}
 

@Override
public View getView(int position, View convertView, ViewGroup parent)
{
    LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View rowView = inflater.inflate(R.layout.note_item, parent, false);

    TextView noteTitle = (TextView) rowView.findViewById(R.id.note_title);
    TextView notePreview = (TextView) rowView.findViewById(R.id.note_preview);
    TextView noteDay = (TextView) rowView.findViewById(R.id.note_day);
    TextView noteMonth = (TextView) rowView.findViewById(R.id.note_month);
    TextView noteYear = (TextView) rowView.findViewById(R.id.note_year);

    String title = mNotes.get(position).getTitle();
    String preview = mNotes.get(position).getPreview();
    preview = Html.fromHtml(preview).toString();
    Date date = mNotes.get(position).getUpdatedAt();

    String day = (String) DateFormat.format("dd", date);
    String month = (String) DateFormat.format("MMM", date);
    String year = (String) DateFormat.format("yyyy", date);

    noteTitle.setText(title);
    noteTitle.setVisibility(title.length() == 0 ? View.GONE : View.VISIBLE);
    notePreview.setText(preview);
    noteDay.setText(day);
    noteMonth.setText(month);
    noteYear.setText(year);

    return rowView;
}
 

/**
 * Generates a description for a given time object. Since this
 * description will be spoken, the components are ordered by descending
 * specificity as DAY MONTH YEAR.
 *
 * @param day The day to generate a description for
 * @return A description of the time object
 */
protected CharSequence getItemDescription(int day) {
  mTempCalendar.set(mYear, mMonth, day);
  final CharSequence date = DateFormat.format(DATE_FORMAT, mTempCalendar.getTimeInMillis());

  if (day == mSelectedDay) {
    return getContext().getString(R.string.item_is_selected, date);
  }

  return date;
}
 

@Override
public String toString() {
    return "TwilightState {"
            + " sunrise=" + DateFormat.format("MM-dd HH:mm", mSunriseTimeMillis)
            + " sunset="+ DateFormat.format("MM-dd HH:mm", mSunsetTimeMillis)
            + " }";
}
 

private MultiHeaderEntity getChangeItem() {

        Random random = new Random();
        int itemType = random.nextInt(4);

        String date = (String) DateFormat.format("HH:mm:ss", System.currentTimeMillis());
        if (itemType == SimpleHelper.TYPE_ONE) {
            return new FirstItem("我的天，类型1被修改了 " + date);
        } else if (itemType == SimpleHelper.TYPE_THREE) {
            return new SecondItem("我的天，类型2被修改了 " + date);
        } else if (itemType == SimpleHelper.TYPE_FOUR) {
            return new ThirdItem("我的天，类型3被修改了 " + date);
        }
        return new FourthItem("我的天，类型4被修改了 " + date);
    }
 

private MultiHeaderEntity getAddItem() {
    Random random = new Random();
    int itemType = random.nextInt(4);
    String date = (String) DateFormat.format("HH:mm:ss", System.currentTimeMillis());
    if (itemType == SimpleHelper.TYPE_ONE) {
        return new FirstItem("我的天，类型1被增加了 " + date);
    } else if (itemType == SimpleHelper.TYPE_THREE) {
        return new SecondItem("我的天，类型2被增加了 " + date);
    } else if (itemType == SimpleHelper.TYPE_FOUR) {
        return new ThirdItem("我的天，类型3被增加了 " + date);
    }
    return new FourthItem("我的天，类型4被增加了 " + date);
}
 

/**
 * Generates a description for a given time object. Since this
 * description will be spoken, the components are ordered by descending
 * specificity as DAY MONTH YEAR.
 *
 * @param day The day to generate a description for
 * @return A description of the time object
 */
protected CharSequence getItemDescription(int day) {
    mTempCalendar.set(mYear, mMonth, day);
    final CharSequence date = DateFormat.format(DATE_FORMAT,
            mTempCalendar.getTimeInMillis());

    if (day == mSelectedDay) {
        return getContext().getString(R.string.mdtp_item_is_selected, date);
    }

    return date;
}
 

/**
 * Generates a description for a given virtual view.
 *
 * @param id the day to generate a description for
 * @return a description of the virtual view
 */
private CharSequence getDayDescription(int id) {
    if (isValidDayOfMonth(id)) {
        mTempCalendar.set(mYear, mMonth, id);
        return DateFormat.format(DATE_FORMAT, mTempCalendar.getTimeInMillis());
    }

    return "";
}
 

/**
 * Creates readable time from time in milliseconds
 */
public static CharSequence getFormattedTime(Context context, long time, boolean isSameDay,
        int userHandle) {
    String skeleton = (!isSameDay ? "EEE " : "")
            + (DateFormat.is24HourFormat(context, userHandle) ? "Hm" : "hma");
    final String pattern = DateFormat.getBestDateTimePattern(Locale.getDefault(), skeleton);
    return DateFormat.format(pattern, time);
}
 

@Override
public String getRowSecondaryString() {
    return "Due " + DateFormat.format("MMM dd", mDueDate);
}
 

/**
 * Set a timestamp pertaining to this notification.
 *
 * Only used for:
 * @see NotificationLocal
 * @see NotificationGlobal
 *
 * @param format
 * @param when
 */
public void setWhen(CharSequence format, long when) {
    if (format == null) format = DEFAULT_DATE_FORMAT;
    this.whenFormatted = DateFormat.format(format, when);
}
 

/**
 * 返回几天前的日期
 *
 * @param day 天数
 * @return 2017-03-11
 */
public static String getBeforeDate(int day) {
    CharSequence sysTimeStr = DateFormat.format("yyyy-MM-dd",
            (System.currentTimeMillis() - (24 * 60 * 60 * 1000) * day));
    return String.valueOf(sysTimeStr);
}