package com.jixiong.teen.view;import android.content.Context;import android.text.Editable;import android.text.Selection;import android.text.TextWatcher;import android.util.AttributeSet;import android.widget.EditText;/** * Created by christy on 16/12/22. */public class MoblieEditText extends EditText {  public MoblieEditText(Context context) {    super(context);    this.addTextChangedListener(new MoblieWatcher());  }  public MoblieEditText(Context context, AttributeSet attrs) {    super(context, attrs);    this.addTextChangedListener(new MoblieWatcher());  }  public MoblieEditText(Context context, AttributeSet attrs, int defStyleAttr) {    super(context, attrs, defStyleAttr);    this.addTextChangedListener(new MoblieWatcher());  }  class MoblieWatcher implements TextWatcher {    int beforeTextLength = 0;    int onTextLength = 0;    boolean isChanged = false;    int location = 0;// 記錄光標的位置    private char[] tempChar;    private final StringBuffer buffer = new StringBuffer();    int konggeNumberB = 0;    @Override    public void beforeTextChanged(CharSequence s, int start, int count,                   int after) {      beforeTextLength = s.length();      if (buffer.length() > 0) {        buffer.delete(0, buffer.length());      }      konggeNumberB = 0;      for (int i = 0; i < s.length(); i++) {        if (s.charAt(i) == ' ') {          konggeNumberB++;        }      }    }    @Override    public void onTextChanged(CharSequence s, int start, int before, int count) {      onTextLength = s.length();      buffer.append(s.toString());      if (onTextLength == beforeTextLength || onTextLength <= 3 || isChanged) {        isChanged = false;        return;      }      isChanged = true;    }    @Override    public void afterTextChanged(Editable s) {      if (isChanged) {        location = getSelectionEnd();        int index = 0;        while (index < buffer.length()) {          if (buffer.charAt(index) == ' ') {            buffer.deleteCharAt(index);          } else {            index++;          }        }        index = 0;        int konggeNumberC = 0;        while (index < buffer.length()) {          if ((index == 3 || index == 8)) {            buffer.insert(index, ' ');            konggeNumberC++;          }          index++;        }        if (konggeNumberC > konggeNumberB) {          location += (konggeNumberC - konggeNumberB);        }        tempChar = new char[buffer.length()];        buffer.getChars(0, buffer.length(), tempChar, 0);        String str = buffer.toString();        if (location > str.length()) {          location = str.length();        } else if (location < 0) {          location = 0;        }        setText(str);        Editable etable = getText();        Selection.setSelection(etable, location);        isChanged = false;      }    }  }}

<com.jixiong.teen.view.MoblieEditText  android:id="@+id/etUserNums"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:background="@null"  android:hint="@string/user_name"  android:inputType="number"  android:maxLines="1"  android:paddingLeft="@dimen/margin_twenty"  android:singleLine="true"  android:textColorHint="@color/hint_color"  android:textSize="@dimen/sp_14" />

etUserNums.addTextChangedListener(new TeenEmptyWatcher() {  @Override  public void onTextChanged(CharSequence s, int start, int before, int count) {  }  @Override  public void afterTextChanged(Editable s) {    if (s != null && s.length() == 13) {      if (etUserNums.isFocused()) {        etUserNums.clearFocus();        etUserPwd.requestFocus();      }    }  }});