保存在android中的EditText信息

我想保留數據在我的Edittext視圖，使用onsaveinstancestate。用戶點擊「添加」按鈕，該按鈕應該保留Edittext視圖中的信息。點擊添加按鈕後，用戶將被帶回活動主界面。當選擇模塊進行編輯時，將顯示edit_module佈局，但沒有edittext視圖中的信息，我試圖保留這些信息。有任何想法嗎？？我想我可能會錯過一個步驟，是否還有比在onsaveinstancestate方法中保存字符串更重要，然後在調用活動時將這些字符串分配給Edittext視圖？ Android新手。保存在android中的EditText信息

NewModule.java

public class NewModule extends Activity{ 

// The EditText objects 

EditText ModuleCode; 
EditText ModuleName; 
EditText ModuleType; 
EditText DayOfWeek; 
EditText StartTime; 
EditText EndTime; 
EditText Location; 
EditText AdditionalInfo; 


@Override 
public void onCreate(Bundle savedInstanceState) { 


     // Get saved data if there is any 

    super.onCreate(savedInstanceState); 
    dbTools = new DBTools(this); 
    // Designate that add_module.xml is the interface used 

    setContentView(R.layout.add_module); 

    // Initialize the EditText objects 
    ModuleCode= (EditText) findViewById(R.id.modcodeet); 
    ModuleName = (EditText) findViewById(R.id.modnameet); 
    ModuleType = (EditText) findViewById(R.id.moduletypeet); 
    DayOfWeek = (EditText) findViewById(R.id.dowet); 
    StartTime = (EditText) findViewById(R.id.starttimeet); 
    EndTime = (EditText) findViewById(R.id.endtimeet); 
    Location = (EditText) findViewById(R.id.locationet); 
    AdditionalInfo = (EditText) findViewById(R.id.additionalinfoet); 



} 
public void addNewModule(View view) { 

    // Will hold the HashMap of values 

    HashMap<String, String> queryValuesMap = new HashMap<String, String>(); 




    // Get the values from the EditText boxes 

    queryValuesMap.put("ModuleCode", ModuleCode.getText().toString()); 
    queryValuesMap.put("ModuleName", ModuleName.getText().toString()); 
    queryValuesMap.put("ModuleType", ModuleType.getText().toString()); 
    queryValuesMap.put("DayOfWeek", DayOfWeek.getText().toString()); 
    queryValuesMap.put("StartTime", StartTime.getText().toString()); 
    queryValuesMap.put("EndTime", EndTime.getText().toString()); 
    queryValuesMap.put("Location", Location.getText().toString()); 
    queryValuesMap.put("AdditionalInfo", AdditionalInfo.getText().toString()); 

    // Call for the HashMap to be added to the database 

    dbTools.insertModule(queryValuesMap); 

    // Call for MainActivity to execute 

    this.callMainActivity(view); 


} 
public void callMainActivity(View view) { 
    Intent theIntent = new Intent(getApplicationContext(), MainActivity.class); 
    startActivity(theIntent); 
} 

public void onSaveInstanceState(Bundle savedInstanceState){ 


EditText editText = (EditText) findViewById(R.id.modcodeet); 
String code = editText.getText().toString(); 
savedInstanceState.putString("code", code); 


EditText editText2 = (EditText) findViewById(R.id.modnameet); 
String name = editText2.getText().toString(); 
savedInstanceState.putString("name", name); 

EditText editText3 = (EditText) findViewById(R.id.moduletypeet); 
String type = editText3.getText().toString(); 
savedInstanceState.putString("type", type); 


EditText editText4 = (EditText) findViewById(R.id.dowet); 
String dow = editText4.getText().toString(); 
savedInstanceState.putString("dow", dow); 

EditText editText5 = (EditText) findViewById(R.id.starttimeet); 
String messagesubject = editText5.getText().toString(); 
savedInstanceState.putString("start", messagesubject); 

EditText editText6 = (EditText) findViewById(R.id.endtimeet); 
String end = editText6.getText().toString(); 
savedInstanceState.putString("end",end); 

EditText editText7 = (EditText) findViewById(R.id.locationet); 
String location = editText7.getText().toString(); 
savedInstanceState.putString("location", location); 

EditText editText8 = (EditText) findViewById(R.id.additionalinfoet); 
String additionalinfo = editText8.getText().toString(); 
savedInstanceState.putString("additionalinfo", additionalinfo); 

super.onSaveInstanceState(savedInstanceState); 

} 

}

TIA

編輯Module.java

public class EditModule extends Activity{ 



EditText ModuleCode; 
EditText ModuleName; 
EditText ModuleType; 
EditText DayOfWeek; 
EditText StartTime; 
EditText EndTime; 
EditText Location; 
EditText AdditionalInfo; 

DBTools dbTools = new DBTools(this); 

public void onCreate(Bundle savedInstanceState){ 

    super.onCreate(savedInstanceState); 
    setContentView(R.layout.edit_module); 


    if (savedInstanceState != null) 
    { 
      String strValue = savedInstanceState.getString("code"); 
      if (strValue != null); 
      ModuleCode = (EditText)findViewById(R.id.modcodeet); 
      ModuleCode.setText(strValue); 

     strValue = savedInstanceState.getString("name"); 
      if (strValue != null); 
      ModuleName = (EditText)findViewById(R.id.modnameet); 
      ModuleName.setText(strValue); 

      strValue = savedInstanceState.getString("type"); 
     if(strValue != null); 
     ModuleType = (EditText)findViewById(R.id.moduletypeet); 
      ModuleType.setText(strValue); 

      strValue = savedInstanceState.getString("dow"); 
     if(strValue != null); 
     DayOfWeek = (EditText)findViewById(R.id.dowet); 
     DayOfWeek.setText(strValue); 

     strValue = savedInstanceState.getString("start"); 
     if (strValue != null); 
     StartTime = (EditText)findViewById(R.id.starttimeet); 
     StartTime.setText(strValue); 

     strValue = savedInstanceState.getString("end"); 
     if (strValue != null); 
     EndTime = (EditText)findViewById(R.id.endtimeet); 
     EndTime.setText(strValue); 

     strValue = savedInstanceState.getString("location"); 
     if (strValue != null); 
     Location = (EditText)findViewById(R.id.locationet); 
     Location.setText(strValue); 

     strValue = savedInstanceState.getString("additionalinfo"); 
     if (strValue != null); 
     AdditionalInfo = (EditText)findViewById(R.id.additionalinfoet); 
     AdditionalInfo.setText(strValue); 

    } 




public void editModule(View view){ 

    HashMap<String, String> queryValuesMap = new HashMap<String, String>(); 



    ModuleName = (EditText) findViewById(R.id.modnameet); 
    ModuleType = (EditText) findViewById(R.id.moduletypeet); 
    DayOfWeek = (EditText) findViewById(R.id.dowet); 
    StartTime = (EditText) findViewById(R.id.starttimeet); 
    EndTime = (EditText) findViewById(R.id.endtimeet); 
    Location = (EditText) findViewById(R.id.locationet); 
    AdditionalInfo = (EditText) findViewById(R.id.additionalinfoet); 



    this.callMainActivity(view); 

} 


public void callMainActivity(View view){ 

    Intent objIntent = new Intent(getApplication(), MainActivity.class); 

    startActivity(objIntent); 

} 



}

來源

2013-10-25 Daniel o Keeffe

你是否想將edittext數據傳遞給下一個活動？ – Tejas

它不是下一個活動，它從add_module活動到activity_main到edit_module活動。我希望add_module edittet字段中的信息顯示在edit_moule edittext字段中，但它不直接從add_module直接到edit_module ，如果這是有道理的，所以我不確定從以前的活動中獲得額外功能是否有效。 –

將它們存儲在add_module中的靜態字符串變量中。在edit_modules中通過類名來訪問它。 – Tejas

嘗試這樣的：

//intialization of shared preferences 
private SharedPreferences preferences; 

//in oncreate() give like this: 
preferences = PreferenceManager.getDefaultSharedPreferences(this); 

// store the edittext value in shared preferences 
Editor edit = preferences.edit(); 
edit.putString("edittextvalue", edittextvalue); 
edit.commit(); 

//whereever u want to get value and use 
String apptext = preferences.getString("edittextvalue","");

來源

2013-10-25 14:37:48

使用SharedPreferences保存的EditText值

來源

2013-10-25 14:21:57 user2862217

保存在android中的EditText信息

回答

相關問題