带删除小图标的EditText

 import android.content.Context;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.text.Editable;
 import android.text.TextWatcher;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.MotionEvent;
 import android.widget.EditText;

 public class EditTextWithDel extends EditText {
     private final static String TAG = "EditTextWithDel";
     private Drawable imgInable;
     private Drawable imgAble;
     private Context mContext;

     public EditTextWithDel(Context context) {
         super(context);
         mContext = context;
         init();
     }

     public EditTextWithDel(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
         mContext = context;
         init();
     }

     public EditTextWithDel(Context context, AttributeSet attrs) {
         super(context, attrs);
         mContext = context;
         init();
     }

     private void init() {
         // 灰色叉号
         imgInable = mContext.getResources().getDrawable(R.drawable.delete_gray);
         // 带色叉号
         imgAble = mContext.getResources().getDrawable(R.drawable.delete);
         addTextChangedListener(new TextWatcher() {
             @Override
             public void onTextChanged(CharSequence s, int start, int before, int count) {}
             @Override
             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
             @Override
             public void afterTextChanged(Editable s) {
                 setDrawable();
             }
         });
         setDrawable();
     }

     //设置删除图片
     private void setDrawable() {
         if(length() < 1)
             setCompoundDrawablesWithIntrinsicBounds(null, null, imgInable, null);
         else
             setCompoundDrawablesWithIntrinsicBounds(null, null, imgAble, null);
     }

      // 处理删除事件
     @Override
     public boolean onTouchEvent(MotionEvent event) {
         if (imgAble != null && event.getAction() == MotionEvent.ACTION_UP) {
             int eventX = (int) event.getRawX();
             int eventY = (int) event.getRawY();
             Log.e(TAG, "eventX = " + eventX + "; eventY = " + eventY);
             Rect rect = new Rect();
             getGlobalVisibleRect(rect);
             rect.left = rect.right - 50;
             if(rect.contains(eventX, eventY))
                 setText("");
         }
         return super.onTouchEvent(event);
     }

     @Override
     protected void finalize() throws Throwable {
         super.finalize();
     }

 }

 <com.EditTextWithDel
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_margin="20dp"
         android:hint="输入"
         android:padding="7dp"
         android:singleLine="true" />