title: Better way to Format Currency Input editText?
body: <p>I have an editText, starting value is $0.00. When you press 1, it changes to $0.01. Press 4, it goes to $0.14. Press 8, $1.48. Press backspace, $0.14, etc.</p>
  
  <p>That works, the problem is, if somebody manually positions the cursor, problems occur in the  formatting. If they were to delete the decimal, it won't come back. If they put the cursor in front of the decimal and type 2, it will display $02.00 instead of $2.00. If they try to delete the $ it will delete a digit instead, for example.</p>
  
  <p>Here is code I'm using, I'd appreciate any suggestions.</p>
  
  <pre><code>mEditPrice.setRawInputType(Configuration.KEYBOARD_12KEY);
      public void priceClick(View view) {
      mEditPrice.addTextChangedListener(new TextWatcher(){
          DecimalFormat dec = new DecimalFormat("0.00");
          @Override
          public void afterTextChanged(Editable arg0) {
          }
          @Override
          public void beforeTextChanged(CharSequence s, int start,
                  int count, int after) {
          }
          @Override
          public void onTextChanged(CharSequence s, int start,
                  int before, int count) {
              if(!s.toString().matches("^\\$(\\d{1,3}(\\,\\d{3})*|(\\d+))(\\.\\d{2})?$"))
              {
                  String userInput= ""+s.toString().replaceAll("[^\\d]", "");
                  if (userInput.length() &gt; 0) {
                      Float in=Float.parseFloat(userInput);
                      float percen = in/100;
                      mEditPrice.setText("$"+dec.format(percen));
                      mEditPrice.setSelection(mEditPrice.getText().length());
                  }
              }
          }
      });
  </code></pre>