Android -
方法一.利用View.OnKeyListener"同步"显示EditTextmyEdit = (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); }@Overridepublic void afterTextChanged(Editable s) {// TODO Auto-generated method stub}@Overridepublic void beforeTextChanged(CharSequence s, int start, int count,int after) {// TODO Auto-generated method stub}@Overridepublic void onTextChanged(CharSequence s, int start, int before, int count) {// TODO Auto-generated method stubmyText.setText(myEdit.getText());} }
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