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;// 記錄游標的位置
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;
}
        }
    }

}

使用；；

直接在佈局中引用

<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" />

然後再activity中初始化

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();
}
        }
    }
});