android 日期时间格式转换；软键盘显示消失;获取系统title

获取activty title bar:

TextView actionTitle = (TextView) findViewById(com.android.internal.R.id.action_bar_title);

View actionTitle = getWindow().getDecorView().findViewById(getResources().getIdentifier("android:id/action_bar_title", null, null));

 

 

private static int flagsDate = DateUtils.FORMAT_SHOW_DATE;
private static int flagsTime = DateUtils.FORMAT_SHOW_TIME ;
private static int flagsWeek = DateUtils.FORMAT_SHOW_WEEKDAY;
String dateStr = (String)DateUtils.formatDateTime(context, System.currentTimeMillis(), flagsDate);//5月11日
String timeStr = (String)DateUtils.formatDateTime(context, System.currentTimeMillis(), flagsTime);//16：40
String weekStr = (String)DateUtils.formatDateTime(context, System.currentTimeMillis(), flagsWeek);//星期二

 

 

12小时格式时，获取上午还是下午：

String smPmStr = DateUtils.getAMPMString(Calendar.getInstance().get(Calendar.AM_PM));//上午（下午）

 

12小时时间格式时，只显示时间，不显示“上午“这样的字符串：

 

private final static String M12 = "h:mm";
private final static String M24 = "kk:mm";
formatTime = android.text.format.DateFormat.is24HourFormat(context)? M24 : M12;
String timeStr = (String) DateFormat.format(formatTime,System.currentTimeMillis());

 

 

将系统当前事件，转化为所需格式：

 

long dateTaken = System.currentTimeMillis();
            if (dateTaken != 0) {
                String datetime = DateFormat.format("yyyy:MM:dd kk:mm:ss", dateTaken).toString();
                Log.e(TAG,"datetime : " +  datetime);

            }

 

 

如果为今天，则显示时间，如果不是今天则显示日期

 

private String getDate(long dateTime)
        {
            int flags = 0;
            String date = "";

            if (DateUtils.isToday(dateTime))
            {
                flags = DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_24HOUR;
                date = (String)DateUtils.formatDateTime(mContext, dateTime, flags);
            }
            else
            {
                flags = DateUtils.FORMAT_SHOW_DATE;
                date = (String)DateUtils.formatDateTime(mContext, dateTime, flags);
            }
            return date;
        }

 

 

在源码短信息模块中MessageUtils.java中有这样一个函数，与上面的功能相同：

 

public static String formatTimeStampString(Context context, long when, boolean fullFormat) {
        Time then = new Time();
        then.set(when);
        Time now = new Time();
        now.setToNow();
        // Basic settings for formatDateTime() we want for all cases.
        int format_flags = DateUtils.FORMAT_NO_NOON_MIDNIGHT |
                           DateUtils.FORMAT_ABBREV_ALL |
                           DateUtils.FORMAT_CAP_AMPM;
        // If the message is from a different year, show the date and year.
        if (then.year != now.year) {
            format_flags |= DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_SHOW_DATE;
        } else if (then.yearDay != now.yearDay) {
            // If it is from a different day than today, show only the date.
            format_flags |= DateUtils.FORMAT_SHOW_DATE;
        } else {
            // Otherwise, if the message is from today, show the time.
            format_flags |= DateUtils.FORMAT_SHOW_TIME;
        }
        // If the caller has asked for full details, make sure to show the date
        // and time no matter what we've determined above (but still make showing
        // the year only happen if it is a different year from today).
        if (fullFormat) {
            format_flags |= (DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_TIME);
        }
        return DateUtils.formatDateTime(context, when, format_flags);
    }

 

 

软键盘显示消失及取反

 

InputMethodManager imm = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
             View view = getCurrentFocus();
             if (view != null){
                // imm.showSoftInput(view, 0); //显示软键盘
                 imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
                // imm.hideSoftInputFromWindow(view.getWindowToken(), 0);//隐藏软键盘  // InputMethodManager.HIDE_NOT_ALWAYS);
             }

 

 

或者

getWindow().setSoftInputMode(
               WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);

 

或者

 

public void hideInputMethod() {
        InputMethodManager imm = getInputMethodManager();
        if (imm != null) {
            imm.hideSoftInputFromWindow(getWindowToken(), 0);
        }
    }

 

 

 

public void showInputMethod() {
        InputMethodManager imm = getInputMethodManager();
        if (imm != null) {
            imm.showSoftInput(this, 0);
        }
    }