[TQC+ Android] 2-8 我是誰? Use SharedPreferences

第一次開啟程式時姓名 , 電話與住址是空的 , 再輸入姓名電話及住址後離開 , 接下來進入程式時會顯示所輸入的值 , 程式碼如下。

package COM.TQC.GDD02;

import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class GDD02 extends Activity
{
 public static final String PREF_NAME = "GDD02_PREF";
 public static final String key01 = "key01";
 public static final String key02 = "key02";
 public static final String key03 = "key03";
 
 private EditText name;
 private EditText phone;
 private EditText address;
 private Button end;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        name = (EditText) this.findViewById(R.id.name);
        phone = (EditText) this.findViewById(R.id.phone); 
        address = (EditText) this.findViewById(R.id.address); 
        
        end = (Button) this.findViewById(R.id.end); 
        end.setOnClickListener(new Button.OnClickListener()
        {
   @Override
   public void onClick(View v)
   {
    // TODO Auto-generated method stub
    finish();
   }         
        });        
    }
    
    @Override
 protected void onResume()
    {
  // TODO Auto-generated method stub
  super.onResume(); 
  
  SharedPreferences sf = getSharedPreferences(PREF_NAME, 0);
  name.setText(sf.getString(key01, ""));
  phone.setText(sf.getString(key02, ""));
  address.setText(sf.getString(key03, ""));
 }

 @Override
 protected void onStop()
 {
  // TODO Auto-generated method stub
  super.onStop();
  
  SharedPreferences sf = getSharedPreferences(PREF_NAME,0);  
  SharedPreferences.Editor edit = sf.edit();
  edit.putString(key01, name.getText().toString());
  edit.putString(key02, phone.getText().toString());
  edit.putString(key03, address.getText().toString());
  edit.commit();  
 } 
}

Next, layout.xml

P.S. 題目中所要求的Variable和Method皆會保留 , 也會根據題目所要求的流程去實作 , 縱使題目要求繞遠路....