布局XML文件:

android:inputType="numberDecimal"

源代码：

editMoney = (EditText) findViewById(R.id.EditMoney);
   editMoney.addTextChangedListener(new TextWatcher() 
   {
       public void afterTextChanged(Editable edt) 
       {
           String temp = edt.toString();
           int posDot = temp.indexOf(".");
           if (posDot <= 0) return;
           if (temp.length() - posDot - 1 > 2)
           {
               edt.delete(posDot + 3, posDot + 4);
           }
       }      public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {}
      public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {}
   });

布局XML文件:

android:inputType="numberDecimal"

源代码：

editMoney = (EditText) findViewById(R.id.EditMoney);
   editMoney.addTextChangedListener(new TextWatcher() 
   {
       public void afterTextChanged(Editable edt) 
       {
           String temp = edt.toString();
           int posDot = temp.indexOf(".");
           if (posDot <= 0) return;
           if (temp.length() - posDot - 1 > 2)
           {
               edt.delete(posDot + 3, posDot + 4);
           }
       }      public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {}
      public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {}
   });