带删除的edittext

  1 package com.sixin.view;
  2 
  3 import android.content.Context;
  4 import android.graphics.Canvas;
  5 import android.graphics.Color;
  6 import android.graphics.Paint;
  7 import android.graphics.Rect;
  8 import android.graphics.drawable.Drawable;
  9 import android.text.Editable;
 10 import android.text.TextWatcher;
 11 import android.util.AttributeSet;
 12 import android.view.MotionEvent;
 13 import android.widget.EditText;
 14 
 15 import com.sixin.R;
 16 
 17 /**
 18  * 带删除图标的EditText
 19  * 
 20  * @author shidongxue
 21  * 
 22  */
 23 public class EditTextWithDel extends EditText {
 24     private Drawable imgInable;
 25     private Context mContext;
 26     private Paint mPaint;
 27 
 28     public EditTextWithDel(Context context) {
 29         super(context);
 30         mContext = context;
 31         init();
 32     }
 33 
 34     public EditTextWithDel(Context context, AttributeSet attrs, int defStyle) {
 35         super(context, attrs, defStyle);
 36         mContext = context;
 37         init();
 38     }
 39 
 40     public EditTextWithDel(Context context, AttributeSet attrs) {
 41         super(context, attrs);
 42         mContext = context;
 43         init();
 44     }
 45 
 46     private void init() {
 47         mPaint = new Paint();
 48         mPaint.setStyle(Paint.Style.STROKE);
 49         mPaint.setColor(Color.GRAY);
 50         imgInable = mContext.getResources().getDrawable(R.drawable.btn_del);
 51         addTextChangedListener(new TextWatcher() {
 52             @Override
 53             public void onTextChanged(CharSequence s, int start, int before, int count) {
 54             }
 55 
 56             @Override
 57             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 58             }
 59 
 60             @Override
 61             public void afterTextChanged(Editable s) {
 62                 setDrawable();
 63             }
 64         });
 65         setDrawable();
 66     }
 67 
 68     // 设置删除图片
 69     public void setDrawable() {
 70         if (length() > 0 && isFocused()) {
 71             setCompoundDrawablesWithIntrinsicBounds(null, null, imgInable, null);
 72         } else {
 73             setCompoundDrawablesWithIntrinsicBounds(null, null, null, null);
 74         }
 75     }
 76 
 77     @Override
 78     protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
 79         super.onFocusChanged(focused, direction, previouslyFocusedRect);
 80         if (focused) {
 81             setCursorVisible(true);
 82         } else {
 83             setCursorVisible(false);
 84         }
 85         setDrawable();
 86     }
 87 
 88     // 处理删除事件
 89     @Override
 90     public boolean onTouchEvent(MotionEvent event) {
 91         if (imgInable != null && event.getAction() == MotionEvent.ACTION_UP) {
 92             int eventX = (int) event.getRawX();
 93             int eventY = (int) event.getRawY();
 94             Rect rect = new Rect();
 95             int r = getPaddingRight();
 96             getGlobalVisibleRect(rect);
 97             rect.left = rect.right - r - 60;
 98             rect.right = rect.right - r;
 99             if (rect.contains(eventX, eventY))
100                 setText("");
101         }
102         return super.onTouchEvent(event);
103     }
104 
105     @Override
106     protected void onDraw(Canvas canvas) {
107         super.onDraw(canvas);
108     }
109 
110     @Override
111     protected void finalize() throws Throwable {
112         super.finalize();
113     }
114 
115 }