Android-TQC110動態密碼顯示

學習重點:
(1)在layout中，android:hint 標記設置顯示編輯文字的提示字
(2)在layout中，從background改變背景
(3)利用checkbox改變edittext狀態

---

package COM.TQC.GDD01;

import android.app.Activity;
import android.os.Bundle;
import android.text.method.HideReturnsTransformationMethod;
import android.text.method.PasswordTransformationMethod;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;

public class GDD01 extends Activity {
  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    
    final CheckBox cb = (CheckBox)findViewById(R.id.mCheck);
    final EditText et = (EditText)findViewById(R.id.mPassword);
    
    cb.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener(){

  @Override
  public void onCheckedChanged(CompoundButton arg0,boolean arg1) {
   // TODO Auto-generated method stub
   if(cb.isChecked())
   {
    et.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
   }
   else
   {
    et.setTransformationMethod(PasswordTransformationMethod.getInstance());
   }
  }
     
    });
    
  }
}