public class ClearEditText extends EditText implements TextWatcher, 
 OnFocusChangeListener { 
 
 /** 
 * 左右兩側圖片資源 
 */ 
 private Drawable left, right; 
 /** 
 * 是否獲取焦點，默認沒有焦點 
 */ 
 private boolean hasFocus = false; 
 /** 
 * 手指抬起時的X坐標 
 */ 
 private int xUp = 0; 
 
 public ClearEditText(Context context) { 
 this(context, null); 
 } 
 
 public ClearEditText(Context context, AttributeSet attrs) { 
 this(context, attrs, android.R.attr.editTextStyle); 
 } 
 
 public ClearEditText(Context context, AttributeSet attrs, int defStyle) { 
 super(context, attrs, defStyle); 
 initWedgits(); 
 } 
 
 /** 
 * 初始化各組件 
 * @param attrs 
 *  屬性集 
 */ 
 private void initWedgits() { 
 try { 
  // 獲取drawableLeft圖片，如果在布局文件中沒有定義drawableLeft屬性，則此值為空 
  left = getCompoundDrawables()[0]; 
  // 獲取drawableRight圖片，如果在布局文件中沒有定義drawableRight屬性，則此值為空 
  right = getCompoundDrawables()[2]; 
  initDatas(); 
 } catch (Exception e) { 
  e.printStackTrace(); 
 } 
 } 
 
 /** 
 * 初始化數(shù)據(jù) 
 */ 
 private void initDatas() { 
 try { 
  // 第一次顯示，隱藏刪除圖標 
  setCompoundDrawablesWithIntrinsicBounds(left, null, null, null); 
  addListeners(); 
 } catch (Exception e) { 
  e.printStackTrace(); 
 } 
 } 
 
 /** 
 * 添加事件監(jiān)聽 
 */ 
 private void addListeners() { 
 try { 
  setOnFocusChangeListener(this); 
  addTextChangedListener(this); 
 } catch (Exception e) { 
  e.printStackTrace(); 
 } 
 } 
 
 @Override 
 public void beforeTextChanged(CharSequence s, int start, int count, 
  int after) { 
 } 
 
 @Override 
 public void onTextChanged(CharSequence s, int start, int before, int after) { 
 if (hasFocus) { 
  if (TextUtils.isEmpty(s)) { 
  // 如果為空，則不顯示刪除圖標 
  setCompoundDrawablesWithIntrinsicBounds(left, null, null, null); 
  } else { 
  // 如果非空，則要顯示刪除圖標 
  if (null == right) { 
   right = getCompoundDrawables()[2]; 
  } 
  setCompoundDrawablesWithIntrinsicBounds(left, null, right, null); 
  } 
 } 
 } 
 
 @Override 
 public boolean onTouchEvent(MotionEvent event) { 
 try { 
  switch (event.getAction()) { 
  case MotionEvent.ACTION_UP: 
  // 獲取點擊時手指抬起的X坐標 
  xUp = (int) event.getX(); 
  // 當點擊的坐標到當前輸入框右側的距離小于等于getCompoundPaddingRight()的距離時，則認為是點擊了刪除圖標 
  // getCompoundPaddingRight()的說明：Returns the right padding of the view, plus space for the right Drawable if any. 
  if ((getWidth() - xUp) <= getCompoundPaddingRight()) { 
   if (!TextUtils.isEmpty(getText().toString())) { 
   setText(""); 
   } 
  } 
  break; 
  default: 
  break; 
  } 
 } catch (Exception e) { 
  e.printStackTrace(); 
 } 
 return super.onTouchEvent(event); 
 } 
 
 @Override 
 public void afterTextChanged(Editable s) { 
 } 
 
 @Override 
 public void onFocusChange(View v, boolean hasFocus) { 
 try { 
  this.hasFocus = hasFocus; 
 } catch (Exception e) { 
  e.printStackTrace(); 
 } 
 } 
} 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 
 xmlns:android="http://schemas.android.com/apk/res/android" 
 android:orientation="vertical" 
 android:layout_width="fill_parent" 
 android:layout_height="fill_parent" 
 android:background="#ffffff"> 
 <TextView 
 android:layout_width="fill_parent" 
 android:layout_height="wrap_content" 
 android:layout_margin="10dip" 
 android:text="@string/hello" 
 android:gravity="center" 
 android:textSize="20sp" 
 android:textColor="#000000" /> 
 
 <com.llew.e.clear.view.wedgit.ClearEditText 
 android:id="@+id/clearEditText" 
 android:layout_width="fill_parent" 
 android:layout_height="wrap_content" 
 android:layout_margin="10dip" 
 android:paddingRight="8dip" 
 android:paddingTop="5dip" 
 android:paddingBottom="5dip" 
 android:hint="請輸入QQ號碼" 
 android:background="@drawable/pay_widget_input" 
 android:drawableLeft="@drawable/super_qq" 
 android:drawableRight="@drawable/clear_normal_list" /> 
 
</LinearLayout> 

public class MainActivity extends Activity { 
 /** Called when the activity is first created. */ 
 @Override 
 public void onCreate(Bundle savedInstanceState) { 
 super.onCreate(savedInstanceState); 
 setContentView(R.layout.main); 
 } 
}