LimitedEditText is used to display live count of number of characters left in Android's EditText and restrict the end-user from exceeding the number of allowed characters.

LimitedEditText.java

/**
 * LimitedEditText
 *
 * Copyright (C) 2013-2015  Khaled Bakhit
 * 
 * 
 * LimitedEditText is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * LimitedEditText code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * Check <http://www.gnu.org/licenses/> for more details.
 */
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.text.Editable;
import android.text.InputFilter;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.widget.EditText;
/**
 * LimitedEditText is used to display live count of number of characters left in Android's EditText 
 * and restrict the end-user from exceeding the number of allowed characters.
 * 
 * @author Khaled Bakhit
 */
public class LimitedEditText extends EditText
{
	/**
	 * Paint Object used to paint limit text.
	 */
	private Paint limit_text_paint;
		
	/**
	 * Current size of text displayed in the EditView.
	 */
	private int current_text_size;
	/**
	 * Maximum text size allowed.
	 */
	private int maximum_text_size;
	/**
	 * Default limit indicator X margin used.
	 */
	private final int DEFAULT_X_MARGIN= 10;
	/**
	 * Default limit indicator Y margin used.
	 */
	private final int DEFAULT_Y_MARGIN= 20;
	/**
	 * Flag indicating text size limit is unlimited.
	 */
	public static final int UNLIMITED= -100;
	
	/**
	 * LimitedEditText constructor.
	 * @param context Context that will display this view.
	 * @param attrs Set of attributes defined for this view.
	 * @param defStyle Style defined for this view.
	 */
	public LimitedEditText(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		initComponents(attrs);
	}
	/**
	 * LimitedEditText constructor.
	 * @param context Context that will display this view.
	 * @param attrs Set of attributes defined for this view.
	 */
	public LimitedEditText(Context context, AttributeSet attrs){
		super(context, attrs);
		initComponents(attrs);
	}
	/**
	 * LimitedEditText constructor.
	 * @param context Context that will display this view.
	 */
	public LimitedEditText(Context context){
		super(context);
		initComponents(null);
	}
	
	/**
	 * Initialize the UI components.
	 * @param attrs Set of attributes defined for this view.
	 */
	private void initComponents(AttributeSet attrs){
		limit_text_paint= new Paint();
		limit_text_paint.setColor(Color.GRAY);
		limit_text_paint.setTextSize(20);
		maximum_text_size= UNLIMITED;
		current_text_size= 0;
		if(attrs!=null) //android:maxLength 
			maximum_text_size= attrs.getAttributeIntValue("android", "maxLength", UNLIMITED);
		
		super.addTextChangedListener(new  TextWatcher(){

			@Override
			public void afterTextChanged(Editable s) {
				if(maximum_text_size != UNLIMITED)
					current_text_size= getText().toString().length();
				invalidate();
			}
			@Override
			public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
			@Override
			public void onTextChanged(CharSequence s, int start, int before,int count) {}
		});
	}
	
	/**
	 * Set maximum text size for given EditText.
	 * @param max Maximum number of characters allowed.
	 */
	public void setMaxTextSize(int max){
		maximum_text_size= max;
		if(max== UNLIMITED)
			setFilters(null);
		else
			setFilters(new InputFilter[]{new InputFilter.LengthFilter(max)});
	}
	/**
	 * Remove text size limit. 
	 * This will stop drawing the amount of characters left.
	 */
	public void removeTextSizeLimit(){
		setMaxTextSize(UNLIMITED);
	}
	/**
	 * Get the X position of limit indicator.
	 * @param text Text to be drawn on the limit indicator.
	 * @return X position of limit indicator.
	 */
	protected float getLimitIndicatorX(String text){
		float widths[]= new float[text.length];
		limit_text_paint.getTextWidths(text, widths);
		
		float sum= 0;
		for(float w: widths)
			sum+= w;
		return getWidth() + getScrollX() - sum - DEFAULT_X_MARGIN;
	}
	/**
	 * Get the Y position of limit indicator.
	 * @param text Text to be drawn on the limit indicator.
	 * @return Y position of limit indicator.
	 */
	protected float getLimitIndicatorY(String text){
		return DEFAULT_Y_MARGIN + getScrollY();
	}
	
	
	@Override
	protected void onDraw(Canvas canvas){
		super.onDraw(canvas);
		if(maximum_text_size== UNLIMITED)
			return;
		
		String text= current_text_size+"/"+maximum_text_size;
		canvas.drawText(text, getLimitIndicatorX(text), getLimitIndicatorY(text), limit_text_paint);
	}
	
}

Initial release of LimitedEditText

float1 is not a type ?

float widths[]= new float1; is creating an error ? any suggestion?

resolved it thanks !

float widths[]= new float(text.length);