Android Using Textwatcher To Replace Words

I have an editText, that you write in it something then when u click next .. the text u wrote gets written into another editText .. It's working perfectly .. But I want to use text

Solution 1:

Assign the Textwatcher to your editText then do something like

editText.setText(editText.getText().toString().replaceAll("S", "$"));

Here is the textWatcher with code applied

finalEditTextFirst= (EditText)findViewById(R.id.etFirst);
    StringstrFirst= First.getText().toString();
    finalTextViewdone= (TextView)findViewById(R.id.tvName);
    StringstrDone= done.getText().toString();
    ButtonTrans= (Button) findViewById(R.id.bTrans);

        Trans.setOnClickListener(newView.OnClickListener() {

            publicvoidonClick(View v) {
                //First EditTextif (First.getText().toString().equals("John")) {
                    done.setText("JOHN");
                } else {
                if (First.getText().toString().equals("Ahmed")) {
                    done.setText("AHMED");
                } else  {
                done.setText(First.getText());
                                }
                            }
                        };
                    });

        First.addTextChangedListener(newTextWatcher() {
            publicvoidonTextChanged(CharSequence s, int start, int before, int count) {
            }

            publicvoidbeforeTextChanged(CharSequence s, int start, int count, int after)    {
            }

            publicvoidafterTextChanged(Editable s) {
                Stringtext= First.getText().toString();
                text = text.replace('s', 'd'); // Any of the diffrent replace methods should work.
                text = text.replace('S', '$'); // This uses the char replace method. Note, the ' quotations
                text = text.replace('O', '@');
                text = text.replace('o', '@');
                done.setText(text);
            }
        });

Its possible that the error resided in the fact you are getting the old string again, and applying text.replace on it. Rather than the modified string. I would have expected it to have got the new string, but setText doesnt seem to fire immediately.

So if you get the string into a variable, then apply all your changes. Then put it back to your text box it will work fine. (I have tested and working code here Pasted above)

Solution 2:

When putting in the value of your first EditText into the value of the second EditText, you can use Java's replace() function for Strings. For example, the following code prints "$X@$$".

Stringvalue="SXOSS";
StringnewValue= value.replace("S", "$"); //replaces all instances of S with $
newValue = newValue.replace("O", "@"); //replaces all instances of O with @
System.out.println(newValue);