How to restrict to input time for edittext in android

Question

I have to allow user to input only time in ##:## format in edit text on the fly, is there any way to achieve it? I have used below code but it doest not working.

I a

Answer 1

I found this library for time EditText. The code is easy to use. I add some explanations from the code owner:

A custom EditText (actually derived from TextView) to input time in 24h format. Features:
- It always shows the currently set time, so it's never empty.

• Both virtual and physical keyboards can be used.

• The current digit is highlighted;

• when a number on the keyboard is pressed, the digit is replaced.

• Back key moves the cursor backward.

• Space key moves the cursor forward.

Here is the TimeEditText Class:

public class TimeEditText extends TextView {

private static final int POSITION_NONE = -1;

private int[] digits = new int[4];
private int currentPosition = POSITION_NONE;
private int mImeOptions;

public TimeEditText(Context context) {
    this(context, null, 0);
}

public TimeEditText(Context context, AttributeSet attrs) {
    this(context, attrs, 0);
}

public TimeEditText(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    setFocusableInTouchMode(true);

    if (attrs != null && !isInEditMode()) {
        mImeOptions = attrs.getAttributeIntValue("http://schemas.android.com/apk/res/android", "imeOptions", 0);
    }

    updateText();       
}

/**
 * @return the current hour (from 0 to 23)
 */
public int getHour() {
    return digits[0]*10+digits[1];
}

/**
 * @return the current minute
 */
public int getMinutes() {
    return digits[2]*10+digits[3];
}

/**
 * Set the current hour
 * @param hour hour (from 0 to 23)
 */
public void setHour(int hour) {
    hour = hour % 24;
    digits[0] = hour/10;
    digits[1] = hour%10;
    updateText();
}

/**
 * Set the current minute
 * @param min minutes (from 0 to 59)
 */
public void setMinutes(int min) {
    min = min % 60;
    digits[2] = min/10;
    digits[3] = min%10;
    updateText();
}

@Override
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
    // hide cursor if not focused
    currentPosition = focused ? 0 : POSITION_NONE;
    updateText();
    super.onFocusChanged(focused, direction, previouslyFocusedRect);
}   

private void updateText() {
    int bold = currentPosition > 1 ? currentPosition+1 : currentPosition;   
    int color = getTextColors().getDefaultColor();
    Spannable text = new SpannableString(String.format("%02d:%02d", getHour(), getMinutes()));
    if (bold >= 0) {
        text.setSpan(new ForegroundColorSpan(color & 0xFFFFFF | 0xA0000000), 0, 5, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        text.setSpan(new StyleSpan(Typeface.BOLD), bold, bold+1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        text.setSpan(new ForegroundColorSpan(Color.BLACK), bold, bold+1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        text.setSpan(new BackgroundColorSpan(0x40808080), bold, bold+1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    }
    setText(text);  
}

@Override
public boolean onTouchEvent(MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_UP) {
        requestFocusFromTouch();
        InputMethodManager imm = (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.showSoftInput(this,0);
        if (currentPosition == POSITION_NONE) {
            currentPosition = 0;
            updateText();
        }
    }
    return true;
}   

private boolean onKeyEvent(int keyCode, KeyEvent event) {
    if (event != null && event.getAction() != KeyEvent.ACTION_DOWN)
        return false;

    if (keyCode == KeyEvent.KEYCODE_DEL) {  
        // moves cursor backward
        currentPosition = currentPosition >= 0 ? (currentPosition+3)%4 : 3;
        updateText();
        return true;
    }

    if (keyCode == KeyEvent.KEYCODE_SPACE) {
        // moves cursor forward
        currentPosition = (currentPosition+1)%4;
        updateText();
        return true;
    }

    if (keyCode == KeyEvent.KEYCODE_ENTER) {
        View v = focusSearch(FOCUS_DOWN);
        boolean next = v!=null;
        if (next) {
            next = v.requestFocus(FOCUS_DOWN);
        }         
        if (!next) {
            hideKeyboard();
            currentPosition = POSITION_NONE;
            updateText();
        }
        return true;
    }       

    char c = (char) event.getUnicodeChar();  
    if (c >= '0' && c <= '9') {
        currentPosition = currentPosition == POSITION_NONE ? 0 : currentPosition;
        int n = c - '0';
        boolean valid = false;

        switch (currentPosition) {
            case 0: // first hour digit must be 0-2
                valid = n <= 2;
                break;
            case 1: // second hour digit must be 0-3 if first digit is 2
                valid = digits[0] < 2 || n <= 3;
                break;
            case 2: // first minute digit must be 0-6
                valid = n < 6;
                break;
            case 3: // second minuti digit always valid (0-9)
                valid = true;
                break;
        }

        if (valid) {
            if (currentPosition == 0 && n == 2 && digits[1] > 3) { // clip to 23 hours max
                digits[1] = 3;
            }

            digits[currentPosition] = n;
            currentPosition = currentPosition < 3 ? currentPosition+1 : POSITION_NONE;  // if it is the last digit, hide cursor
            updateText();
        }

        return true;
    }

    return false;
}

private void hideKeyboard() {
    InputMethodManager imm = (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
    imm.hideSoftInputFromWindow(getWindowToken(), 0);        
}


@Override
public boolean onKeyDown(int keyCode, KeyEvent event) { 
    // events from physical keyboard
    return onKeyEvent(keyCode, event);
}

@Override
public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
    // manage events from the virtual keyboard
    outAttrs.actionLabel = null;
    outAttrs.label = "time";
    outAttrs.inputType = InputType.TYPE_CLASS_NUMBER;
    outAttrs.imeOptions = mImeOptions | EditorInfo.IME_FLAG_NO_EXTRACT_UI;

    if ((outAttrs.imeOptions & EditorInfo.IME_MASK_ACTION) == EditorInfo.IME_ACTION_UNSPECIFIED) {
        if (focusSearch(FOCUS_DOWN) != null) {
            outAttrs.imeOptions |= EditorInfo.IME_ACTION_NEXT;
        } else {
            outAttrs.imeOptions |= EditorInfo.IME_ACTION_DONE;
        }
    }

    return new BaseInputConnection(this, false) {
        @Override
        public boolean performEditorAction(int actionCode) {
            if (actionCode == EditorInfo.IME_ACTION_DONE) {
                hideKeyboard();
                currentPosition = POSITION_NONE;
                updateText();
            } else if (actionCode == EditorInfo.IME_ACTION_NEXT){
                View v = focusSearch(FOCUS_DOWN);
                if (v!=null) {
                    v.requestFocus(FOCUS_DOWN);
                }
            }
            return true;
        }

        @Override
        public boolean deleteSurroundingText(int beforeLength, int afterLength) {
            onKeyEvent(KeyEvent.KEYCODE_DEL, null); 
            return true;
        }

        @Override
        public boolean sendKeyEvent(KeyEvent event) {
            onKeyEvent(event.getKeyCode(), event);
            return true;
        }           
     };
 }
}

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