手机号码格式化显示自定义EditText控件

自定义EditText控件实现手机号码自动格式化显示，前3位数字后跟一个空格，之后每4位数字后加一个空格。

显示效果如下图所示：



使用方式如下所示：

1. xml中放置控件：

<com.rzc.NumberFormatEditText
android:id="@+id/testEditText"
android:layout_width="200dp"
android:layout_height="40dp"
android:textSize="16dp"/>

2. Activity中使用：

final NumberFormatEditText testEditText = (NumberFormatEditText) findViewById(R.id.testEditText);
testEditText.setText("13812345678");
findViewById(R.id.btTj).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
toast(testEditText.getRealNumber());//getRealNumber返回不带空格的真实号码
}
});

以下贴出控件源码：

package com.rzc;

import android.content.Context;
import android.text.Editable;
import android.text.InputType;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.widget.EditText;

/**
* Created by rzc on 18/1/31.
*/

public class NumberFormatEditText extends EditText {
private String mRealNumber;

public NumberFormatEditText(Context context) {
super(context);
init();
}

public NumberFormatEditText(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}

public String getRealNumber() {
return mRealNumber;
}

private void init() {
setInputType(InputType.TYPE_CLASS_NUMBER);
addTextChangedListener(new TextWatcher() {
private int mVaryType = 0;
private static final int VARY_ADD_ONE = 1;
private static final int VARY_CLEAR_ONE = 2;
private int mSelection = 0;

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
if (count == 0 && after == 1) {
mVaryType = VARY_ADD_ONE;
mSelection = start + 1;
} else if (count == 1 && after == 0) {
mVaryType = VARY_CLEAR_ONE;
mSelection = start;
} else {
mVaryType = 0;
}
}

@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {

}

@Override
public void afterTextChanged(Editable s) {
String currText = s.toString();
mRealNumber = currText.replaceAll("\\D", "");
String destText = getFormatStrByNumber(mRealNumber);

if (!currText.equals(destText)) {
if (destText == null) {
setText("");
} else {
int sel = destText.length();
if (mVaryType == VARY_ADD_ONE || mVaryType == VARY_CLEAR_ONE) {
sel = mSelection;

boolean nearBlank = false;
if (sel == 4 || (sel > 4 && (sel - 4) % 5 == 0)) {
nearBlank = true;
}
if (nearBlank) {
if (mVaryType == VARY_ADD_ONE) {
sel++;
} else {
sel--;
}
}

if (sel > destText.length()) {
sel = destText.length();
}
}
setText(destText);
setSelection(sel);
}
} else {
if (mVaryType == VARY_CLEAR_ONE) {
int sel = mSelection;
if (sel == 4 || (sel > 4 && (sel - 4) % 5 == 0)) {
sel--;
}
if (sel > destText.length()) {
sel = destText.length();
}
setSelection(sel);
}
}
}
});
}

private String getFormatStrByNumber(String realNumber) {
String destText = null;

if (realNumber == null) {
return null;
}

if (realNumber.length() <= 3) {
destText = realNumber;
} else if (realNumber.length() <= 7) {
destText = realNumber.substring(0, 3) + " " + realNumber.substring(3);
} else {
destText = realNumber.substring(0, 3);
int len = 3;
while (len < realNumber.length()) {
int tail = len + 4;
destText += " " + realNumber.substring(len,
tail <= realNumber.length() ? tail : realNumber.length());
len += 4;
}
}

return destText;
}
}