Android仿iphone控件ClearEditText可抖动

功能：编辑时可清空文本框，可抖动，可设置右边图片，可设置edittext样式

package com.example.clearedittext;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.view.animation.Animation;
import android.view.animation.CycleInterpolator;
import android.view.animation.TranslateAnimation;
import android.widget.EditText;

public class ClearEditText extends EditText implements  
        OnFocusChangeListener, TextWatcher { 
 
    //删除按钮的引用 
    private Drawable mClearDrawable; 
     //控件是否有焦点 
    private boolean hasFoucs;
    
    private RigthClickEvent rigthClickEvent;
 
    public ClearEditText(Context context) { 
        this(context, null); 
    } 
 
    public ClearEditText(Context context, AttributeSet attrs) { 
         //这里构造方法也很重要，不加这个很多属性不能再XML里面定义  
        this(context, attrs, android.R.attr.editTextStyle); 
    } 
    
    public ClearEditText(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }
    
    
    private void init() { 
        //获取EditText的DrawableRight,假如没有设置我们就使用默认的图片  
        mClearDrawable = getCompoundDrawables()[2]; 
        if (mClearDrawable == null) { 
            mClearDrawable = getResources().getDrawable(R.drawable.fhs); 
        } 
        
        mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(), mClearDrawable.getIntrinsicHeight()); 
      //默认设置隐藏图标 
        setClearIconVisible(false); 
      //设置焦点改变的监听 
        setOnFocusChangeListener(this); 
      //设置输入框里面内容发生改变的监听 
        addTextChangedListener(this); 
    } 
 
 
    /** 
     * 因为我们不能直接给EditText设置点击事件，所以我们用记住我们按下的位置来模拟点击事件 
     * 当我们按下的位置 在  EditText的宽度 - 图标到控件右边的间距 - 图标的宽度  和 
     * EditText的宽度 - 图标到控件右边的间距之间我们就算点击了图标，竖直方向就没有考虑 
     */ 
    @Override 
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_UP) {
            if (getCompoundDrawables()[2] != null) {

                boolean touchable = event.getX() > (getWidth() - getTotalPaddingRight())
                        && (event.getX() < ((getWidth() - getPaddingRight())));
                
                if (touchable) {
                    //判断是否设置右图标点击事件
                    if(rigthClickEvent!=null){
                        rigthClickEvent.execute();
                    }else{
                        this.setText("");
                    }
                }
            }
        }

        return super.onTouchEvent(event);
    }
    /**
     * 调用此接口可以设置点击图标事件，默认为清空text内容
     * */
    public void setRigthClickEvent(RigthClickEvent rigthClickEvent){
        this.rigthClickEvent=rigthClickEvent;
    }
    public static interface RigthClickEvent{
        public void execute();
    }
    
    /** 
     * 当ClearEditText焦点发生变化的时候，判断里面字符串长度设置清除图标的显示与隐藏 
     */  
    @Override 
    public void onFocusChange(View v, boolean hasFocus) { 
        this.hasFoucs = hasFocus;
        if (hasFocus) { 
            setClearIconVisible(getText().length() > 0); 
        } else { 
            setClearIconVisible(false); 
        } 
    } 
 
 
    /** 
     * 设置清除图标的显示与隐藏，调用setCompoundDrawables为EditText绘制上去 
     * @param visible 
     */
    protected void setClearIconVisible(boolean visible) { 
        Drawable right = visible ? mClearDrawable : null; 
        setCompoundDrawables(getCompoundDrawables()[0], 
                getCompoundDrawables()[1], right, getCompoundDrawables()[3]); 
    } 
     
    
    /** 
     * 当输入框里面内容发生变化的时候回调的方法 
     */
    @Override 
    public void onTextChanged(CharSequence s, int start, int count, 
            int after) { 
                if(hasFoucs){
                    setClearIconVisible(s.length() > 0);
                }
    } 
 
    @Override 
    public void beforeTextChanged(CharSequence s, int start, int count, 
            int after) { 
         
    } 
 
    @Override 
    public void afterTextChanged(Editable s) { 
         
    } 
    
   
    /** 
     * 设置晃动动画 
     */  
    public void setShakeAnimation(){
        //this.setText("");可以让text的内容清空
        this.setAnimation(shakeAnimation(5));
    }
    /** 
     * 晃动动画 
     * @param counts 1秒钟晃动多少下 
     * @return 
     */  
    @SuppressLint("NewApi")
    public void setBackStyle(int sty){
        switch (sty) {
        case 0:
            //背景空
            this.setBackground(null);
            break;
        case 1:
            //圆形样式
            this.setBackgroundResource(R.drawable.bg_edittext);
            break;
        default:
            
            break;
        }

    }  
    /** 
     * 晃动动画 
     */
    public static Animation shakeAnimation(int counts){
        Animation translateAnimation = new TranslateAnimation(0, 10, 0, 0);
        translateAnimation.setInterpolator(new CycleInterpolator(counts));
        translateAnimation.setDuration(1000);
        return translateAnimation;
    }
 
 
}

样式文件bg_edittext.xml

<?xml version="1.0" encoding="UTF-8"?>   
<selector xmlns:android="http://schemas.android.com/apk/res/android">  
        <item android:state_window_focused="false" android:drawable="@drawable/bg_edittext_normal" />  
       <item android:state_focused="true" android:drawable="@drawable/bg_edittext_focused" />  
</selector> 

bg_edittext_normal.xml

<?xml version="1.0" encoding="UTF-8"?>   
<shape xmlns:android="http://schemas.android.com/apk/res/android">   
    <solid android:color="#FFFFFF" />   
    <corners android:radius="3dip"/>  
    <stroke    
        android:width="1dip"    
        android:color="#BDC7D8" />   
</shape>

bg_edittext_focused.xml

<?xml version="1.0" encoding="UTF-8"?>   
<shape xmlns:android="http://schemas.android.com/apk/res/android">   
    <solid android:color="#FFFFFF" />   
    <corners android:radius="3dip"/>  
    <stroke    
        android:width="1dip"    
        android:color="#BDC7D8" />   
</shape>