[android-developers] Re: SharedPreferences no work

Τη Παρασκευή, 14 Δεκεμβρίου 2012 9:15:12 π.μ. UTC+2, ο χρήστης Antonis Kanaris έγραψε:

Hello.I make an apk with two activities and use SharedPreferences for store user values but no work....the string url no store ....this is my code...Need something extra to manifest for work SharedPreferences?

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       
      

        if (savedInstanceState != null)
        {
          String strValue = savedInstanceState.getString("Url");
          if (strValue != null)
          {
              TextView text = (TextView) findViewById(R.id.text);
             
              //Sets the new text to TextView (runtime click event)
              text.setText(strValue);
          }
        }
       
    }
   
    public void Save(View view) {
       
         SharedPreferences preferences = getPreferences(MODE_PRIVATE);
          SharedPreferences.Editor editor = preferences.edit();  // Put the values from the UI
         
          EditText txtUrl = (EditText)findViewById(R.id.txtUrl);
          String strUrl = txtUrl.getText().toString();
         
         
         
          editor.putString("Url", strUrl); // value to store
           
          // Commit to storage
          editor.commit();
       
        Intent myIntent = new Intent(view.getContext(), Activity2.class);
        startActivityForResult(myIntent, 0);
    }


public class Activity2 extends Activity {

    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity2);

        if (savedInstanceState != null)
        {
          String strValue = savedInstanceState.getString("Url");
          if (strValue != null)
          {
              TextView text = (TextView) findViewById(R.id.texturl);
             
              //Sets the new text to TextView (runtime click event)
              text.setText(strValue);
          }
        }
    
    }
   
    public void Setup(View view) {
        Intent intent = new Intent();
        setResult(RESULT_OK, intent);
        finish();
    }

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