Android - TextView与EditText 同步显示

方法一.利用View.OnKeyListener"同步"显示

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EditText  myEdit = (EditText)findViewById(R.id.myEdit);TextView myText = (TextView)findViewById(R.id.myText);myEdit.setOnKeyListener(new EditText.OnClickListener(){public boolean onKey(View v , int keyCode  , KeyEvent event){       myText.setText(myEdit.getText());       return false;}});

方法二.? 利用TextWatcher,真正实现同步

import android.app.Activity;import android.os.Bundle;import android.text.Editable;import android.text.TextWatcher;import android.widget.EditText;import android.widget.TextView;public class TextWatcherDemo extends Activity implements TextWatcher{    /** Called when the activity is first created. */	private TextView myText;	private EditText myEdit;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                myText=(TextView)findViewById(R.id.text);        myEdit=(EditText)findViewById(R.id.edit);                myEdit.addTextChangedListener(this);    }	@Override	public void afterTextChanged(Editable s) {		// TODO Auto-generated method stub			}	@Override	public void beforeTextChanged(CharSequence s, int start, int count,			int after) {		// TODO Auto-generated method stub			}	@Override	public void onTextChanged(CharSequence s, int start, int before, int count) {		// TODO Auto-generated method stub		myText.setText(myEdit.getText());	}    }

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