android 自定义EditText 整合删除

前言

对常用组件进行封装可以使开发事半功倍，比如这篇介绍的带删除功能和字符串格式功能的EditText

思路:

对多个系统View 进行整合，将具有删除功能的img封装到EditText中，然后可以对字符进行格式化的功能以接口
形式对外暴露，具体实现给调用方。方便多项目移植并且达到功能上解耦。

效果图

如上图， 手机号码进行 344 分割，获取焦点后 删除img显示，失去光标则消失 删除img。看到这里是不是已经有自己封装方式了。

源码

package com.nuoyuan.xd.widget;import android.content.Context;import android.graphics.drawable.Drawable;import android.support.v4.content.ContextCompat;import android.support.v4.graphics.drawable.DrawableCompat;import android.support.v7.widget.AppCompatEditText;import android.text.Editable;import android.text.TextWatcher;import android.util.AttributeSet;import android.util.Log;import android.view.MotionEvent;import android.view.View;import com.nuoyuan.xd.R;/** * by weichyang 2017/10/13 14:52 * 1.自包含删除图标 * 2.规则定制 */public class NyCompatEditText extends AppCompatEditText implements View.OnFocusChangeListener, View.OnTouchListener, TextWatcher {    /**     * 关闭图片     */    private Drawable mClearTextIcon;    /**     * 焦点监听回调     */    private OnFocusChangeListener mOnFocusChangeListener;    /**     * 规则接口     */    private EditerRuler editerRuler;    private OnTouchListener mOnTouchListener;    private Context mContext;    private Drawable dRight;    public NyCompatEditText(Context context) {        super(context);        init(context);    }    public NyCompatEditText(Context context, AttributeSet attrs) {        super(context, attrs);        init(context);    }    public NyCompatEditText(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        init(context);    }    private void init(Context context) {        this.mContext = context;        mClearTextIcon = getCompoundDrawables()[2];        if (mClearTextIcon == null) {            final Drawable drawable = ContextCompat.getDrawable(context, R.drawable.iconclose);            final Drawable wrapDrawable = DrawableCompat.wrap(drawable);            DrawableCompat.setTint(wrapDrawable, getCurrentHintTextColor());            mClearTextIcon = wrapDrawable;        }        mClearTextIcon.setBounds(0, 0, mClearTextIcon.getIntrinsicHeight(), mClearTextIcon.getIntrinsicHeight());        setClearIconVisible(false);        super.setOnFocusChangeListener(this);        super.setOnTouchListener(this);        addTextChangedListener(this);    }    public void setmOnFocusChangeListener(OnFocusChangeListener mOnFocusChangeListener) {        this.mOnFocusChangeListener = mOnFocusChangeListener;    }    public void setmOnTouchListener(OnTouchListener mOnTouchListener) {        this.mOnTouchListener = mOnTouchListener;    }    public void addEditerRuler(EditerRuler editerRuler) {        this.editerRuler = editerRuler;    }    private void setClearIconVisible(boolean visible) {        mClearTextIcon.setVisible(visible, false);        final Drawable[] compoundDrawables = getCompoundDrawables();        setCompoundDrawables(                compoundDrawables[0],                compoundDrawables[1],                visible ? mClearTextIcon : null,                compoundDrawables[3]);    }    @Override    public void onFocusChange(View v, boolean hasFocus) {        if (hasFocus) {            setClearIconVisible(getText().length() > 0);        } else {            setClearIconVisible(false);        }        if (mOnFocusChangeListener != null) {            mOnFocusChangeListener.onFocusChange(v, hasFocus);        }    }    @Override    public boolean onTouch(View v, MotionEvent motionEvent) {        int x = (int) motionEvent.getX();        if (mClearTextIcon.isVisible() && x > getWidth() - getPaddingRight() - mClearTextIcon.getIntrinsicWidth()) {            if (motionEvent.getAction() == motionEvent.ACTION_UP) {                setError(null);                setText("");            }            return true;        }        return (mOnTouchListener != null && mOnTouchListener.onTouch(v, motionEvent));    }    @Override    public void beforeTextChanged(CharSequence s, int start, int count, int after) {        Log.d("beforeTextChanged", " s:" + s + " start:" + start + " count:" + count + " after:" + after);    }    @Override    public void onTextChanged(CharSequence s, int start, int lengthBefore, int lengthAfter) {        if (isFocused()) {            setClearIconVisible(s.length() > 0);        }        if (s == null || s.length() == 0) return;        if (editerRuler != null) {            String[] afterRuler = editerRuler.runRulerForResult(s, start, lengthBefore);            if (afterRuler != null && (afterRuler.length > 0 && afterRuler.length == 2)) {                this.setText(afterRuler[0]);                this.setSelection(afterRuler[1] == null ? 0 : Integer.valueOf(afterRuler[1]));            }        }    }    @Override    public void afterTextChanged(Editable s) {    }}

关键地方就是针对 光标处理，以及规则获取。这里以接口形式对外发布规则接口。

规则接口

/** * Created by weichyang on 2017/10/13. */public interface EditerRuler {    /**     * 外部设置edit规则     * @param s 设置string     * @param start     * @param lengthBefore     */    String[] runRulerForResult(CharSequence s,                               int start,                               int lengthBefore);}

规则实现类

package com.nuoyuan.xd.widget;/** * Author: weichyang * Date:   2017/10/13 * Description: editer 规则实现类 * * 手机号码 * 身份证号码 */public class EditerRulerImpl implements EditerRuler {    @Override    public String[] runRulerForResult(CharSequence s, int start, int lengthBefore) {        return getFormatPhoneNum(s,start,lengthBefore);    }    /**     * 手机号码规则     * @param s     * @param start     * @param lengthBefore     * @return     */    private String[]  getFormatPhoneNum(CharSequence s, int start, int lengthBefore){        //手机号格式化xxx xxxx xxxx        String[] result= new String[2];        StringBuilder sb = new StringBuilder();        for (int i = 0; i < s.length(); i++) {            if (i != 3 && i != 8 && s.charAt(i) == ' ') {                continue;            } else {                sb.append(s.charAt(i));                if ((sb.length() == 4 || sb.length() == 9) && sb.charAt(sb.length() - 1) != ' ') {                    sb.insert(sb.length() - 1, ' ');                }            }        }        if (!sb.toString().equals(s.toString())) {            int index = start + 1;            if (sb.charAt(start) == ' ') {                if (lengthBefore == 0) {                    index++;                } else {                    index--;                }            } else {                if (lengthBefore == 1) {                    index--;                }            }            result[0]=sb.toString();            result[1]=String.valueOf(index);            return result;        }        return null;    }}

如上，所有规则定制，放入规则实现类。用到那个规则调用那个规则，这里这些了一个手机号码段分割规则。其他自行脑补。

调用地方

       editPhoneNumber.addEditerRuler(new EditerRulerImpl());

直接将规则实现类，传进入。ok