带有×的EditText

 

代码：

EditTextWithDel.java（直接复制）：

 1 package com.sunday.customs;
 2 
 3 
 4 import com.example.customs.R;
 5 
 6 import android.content.Context;
 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.util.Log;
13 import android.view.MotionEvent;
14 import android.widget.EditText;
15 
16 /**
17  * @author sunday
18  * 2013-12-04
19  */
20 public class EditTextWithDel extends EditText {
21     private final static String TAG = "EditTextWithDel";
22     private Drawable imgInable;
23     private Drawable imgAble;
24     private Context mContext;
25 
26     public EditTextWithDel(Context context) {
27         super(context);
28         mContext = context;
29         init();
30     }
31 
32     public EditTextWithDel(Context context, AttributeSet attrs, int defStyle) {
33         super(context, attrs, defStyle);
34         mContext = context;
35         init();
36     }
37 
38     public EditTextWithDel(Context context, AttributeSet attrs) {
39         super(context, attrs);
40         mContext = context;
41         init();
42     }
43     
44     private void init() {
45         imgInable = mContext.getResources().getDrawable(R.drawable.delete_gray);
46         imgAble = mContext.getResources().getDrawable(R.drawable.delete);
47         addTextChangedListener(new TextWatcher() {
48             @Override
49             public void onTextChanged(CharSequence s, int start, int before, int count) {}
50             @Override
51             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
52             @Override
53             public void afterTextChanged(Editable s) {
54                 setDrawable();
55             }
56         });
57         setDrawable();
58     }
59     
60     //设置删除图片
61     private void setDrawable() {
62         if(length() < 1)
63             setCompoundDrawablesWithIntrinsicBounds(null, null, imgInable, null);
64         else
65             setCompoundDrawablesWithIntrinsicBounds(null, null, imgAble, null);
66     }
67     
68      // 处理删除事件
69     @Override
70     public boolean onTouchEvent(MotionEvent event) {
71         if (imgAble != null && event.getAction() == MotionEvent.ACTION_UP) {
72             int eventX = (int) event.getRawX();
73             int eventY = (int) event.getRawY();
74             Log.e(TAG, "eventX = " + eventX + "; eventY = " + eventY);
75             Rect rect = new Rect();
76             getGlobalVisibleRect(rect);
77             rect.left = rect.right - 50;
78             if(rect.contains(eventX, eventY)) 
79                 setText("");
80         }
81         return super.onTouchEvent(event);
82     }
83 
84     @Override
85     protected void finalize() throws Throwable {
86         super.finalize();
87     }
88 
89 }

 

activity_main.xml：

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical">
 6 
 7     <com.sunday.customs.EditTextWithDel
 8         android:layout_width="match_parent"
 9         android:layout_height="wrap_content"
10         android:layout_margin="20dp"
11         android:hint="输入"
12         android:padding="7dp"
13         android:singleLine="true" />
14 
15     <com.sunday.customs.EditTextWithDel
16         android:layout_width="match_parent"
17         android:layout_height="wrap_content"
18         android:layout_margin="20dp"
19         android:hint="输入"
20         android:padding="7dp"
21         android:singleLine="true" />
22 
23 </LinearLayout>

 

MainActivity.java：

package com.sunday.customs;


import com.example.customs.R;

import android.os.Bundle;
import android.app.Activity;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}

 

posted on 2015-12-09 10:19  Z2  阅读(254)  评论(0)  编辑  收藏  举报

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