MainActivity.java

package com.example.myviewedittext;

import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

	private TextView tv;
	private EditTextWithClearBtn etc;
	
	private String text;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		tv = (TextView) findViewById(R.id.tv);
		text = tv.getText().toString();
		
		etc = (EditTextWithClearBtn) findViewById(R.id.etc);
		etc.addTextChangedListener(new TextWatcher() {
			@Override
			public void onTextChanged(CharSequence s, int start, int before, int count) {
				tv.setText(text + s.length());
			}
			
			@Override
			public void beforeTextChanged(CharSequence s, int start, int count,
					int after) {
				
			}
			
			@Override
			public void afterTextChanged(Editable s) {
				
			}
		});

		findViewById(R.id.btn).setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				Toast.makeText(MainActivity.this, etc.getText().toString(), Toast.LENGTH_SHORT).show();
			}
		});
	}

}