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Show a fixed number of decimals
package mt.bnpp.com.bnpp_mt_android_bleu.utils;
import android.text.InputFilter;
import android.text.Spanned;
/**
* Created by A591108 on 05/11/2014.
*/
public class DecimalFilter implements InputFilter {
private int decimalDigits;
public DecimalFilter(int decimalDigits) {
this.decimalDigits = decimalDigits;
}
@Override
public CharSequence filter(CharSequence source, int i, int i2, Spanned spanned, int i3, int i4) {
int dotPos = -1;
int len = spanned.length();
for (int decimalsI = 0; decimalsI < len; decimalsI++) {
char c = spanned.charAt(decimalsI);
if (c == '.' || c == ',') {
dotPos = decimalsI;
break;
}
}
if (dotPos >= 0) {
// protects against many dots
if (source.equals(".") || source.equals(",")) {
return "";
}
// if the text is entered before the dot
if (i4 <= dotPos) {
return null;
}
if (len - dotPos > decimalDigits) {
return "";
}
}
return null;
}
}
package mt.bnpp.com.bnpp_mt_android_bleu.utils;
import android.text.InputFilter;
import android.text.Spanned;
/**
* Created by A591108 on 05/11/2014.
*/
public class InputFilterMinMax implements InputFilter {
private double min, max;
public InputFilterMinMax(double min, double max) {
this.min = Math.min(min, max);
this.max = Math.max(min, max);
}
@Override
public CharSequence filter(CharSequence source, int i, int i2, Spanned spanned, int i3, int i4) {
try {
double input = Double.parseDouble(spanned.toString() + source.toString());
if (isInRange(min, max, input)) {
return null;
}
} catch (NumberFormatException nfe) {
nfe.printStackTrace();
}
return "";
}
private boolean isInRange(double min, double max, double value) {
return value >= min && value <= max;
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp">
<mt.bnpp.com.bnpp_mt_android_bleu.ui.view.MoneyEditText
android:layout_width="match_parent"
android:layout_height="48dp"
android:inputType="numberDecimal"
android:ems="10"
app:min="1"
app:max="250"
app:decimals="2" />
</LinearLayout>
package mt.bnpp.com.bnpp_mt_android_bleu.ui.view;
import android.content.Context;
import android.content.res.TypedArray;
import android.text.InputFilter;
import android.util.AttributeSet;
import android.widget.EditText;
import java.util.ArrayList;
import mt.bnpp.com.bnpp_mt_android_bleu.R;
import mt.bnpp.com.bnpp_mt_android_bleu.utils.DecimalFilter;
import mt.bnpp.com.bnpp_mt_android_bleu.utils.InputFilterMinMax;
/**
* Created by A591108 on 05/11/2014.
*/
public class MoneyEditText extends EditText {
private int decimals = 2;
private float min = 0f;
private float max = 100f;
private InputFilter[] oldFilters;
public MoneyEditText(Context context) {
super(context);
init(null);
}
public MoneyEditText(Context context, AttributeSet attrs) {
super(context, attrs);
init(attrs);
}
public MoneyEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(attrs);
}
private void init(AttributeSet attrs) {
isInEditMode();
if (attrs != null) {
TypedArray a = getContext().getTheme().obtainStyledAttributes(attrs, R.styleable.MoneyEditText, 0, 0);
decimals = a.getInt(R.styleable.MoneyEditText_decimals, decimals);
min = a.getFloat(R.styleable.MoneyEditText_min, min);
max = a.getFloat(R.styleable.MoneyEditText_max, max);
}
oldFilters = getFilters();
addFilters();
}
private void addFilters() {
ArrayList<InputFilter> inputFilters = new ArrayList<InputFilter>(oldFilters.length + 1);
for (InputFilter filter : oldFilters) {
inputFilters.add(filter);
}
inputFilters.add(new InputFilterMinMax(1d, 250d));
inputFilters.add(new DecimalFilter(2));
setFilters(inputFilters.toArray(new InputFilter[inputFilters.size()]));
}
public void setMin(float min){
this.min = min;
addFilters();
}
public void setMax(float max){
this.max = max;
addFilters();
}
public void setDecimals(int decimals){
this.decimals = decimals;
addFilters();
}
}
@alorma

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@alorma alorma commented Apr 4, 2015

Nooo

@vtthach

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@vtthach vtthach commented Jul 8, 2017

This work perfect, thanks @alorma

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