如果我有10个EditText并且用户只输入5然后我退出我的应用程序单击onBackPressed按钮而不提交正在输入的EditText数据，然后当我重新启动我的应用程序时我想在启动时进行相同的活动。感谢appriceat。
public class Registration_Form extends Activity {
EditText et_CompanyName;
EditText et_EmployeeName;
EditText et_CompanyWebsite;
EditText et_ContactNumber;
EditText et_Email_Id;
Button btnSubmit;
DatabaseHelper databaseHelper;
SQLiteDatabase db;
RadioGroup radioGroup_FinancialYaer;
RadioButton radioButton_FinancialYaer;
String strFinancialYear;
String appWidgetId = null;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.registration_details);
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
final SharedPreferences.Editor edit = prefs.edit();
boolean alldataSaved=prefs.getBoolean("SecondRun",false);
et_CompanyName = (EditText) findViewById(R.id.editText_CompanyName);
et_EmployeeName = (EditText) findViewById(R.id.editText_EmployeeName);
et_CompanyWebsite = (EditText) findViewById(R.id.editText_CompanyWebSite);
et_ContactNumber = (EditText) findViewById(R.id.editText_ConatctNo);
et_Email_Id = (EditText) findViewById(R.id.editText_EmailId);
et_CompanyName.setOnFocusChangeListener(new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
if(!hasFocus)
{
edit.putString("Company_Name"+appWidgetId,et_CompanyName.getText().toString());
edit.commit();
}
}
});
et_EmployeeName.setOnFocusChangeListener(new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
if(!hasFocus)
{
edit.putString("Employee_Name"+appWidgetId,et_EmployeeName.getText().toString());
edit.commit();
}
}
});
et_CompanyWebsite.setOnFocusChangeListener(new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
if(!hasFocus)
{
edit.putString("Company_Website"+appWidgetId,et_CompanyWebsite.getText().toString());
edit.commit();
}
}
});
et_ContactNumber.setOnFocusChangeListener(new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
if(!hasFocus)
{
edit.putString("Contact_Number"+appWidgetId,et_ContactNumber.getText().toString());
edit.commit();
}
}
});
et_Email_Id.setOnFocusChangeListener(new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
if(!hasFocus)
{
edit.putString("Email_Id"+appWidgetId,et_Email_Id.getText().toString());
edit.commit();
}
}
});
SharedPreferences settings=getSharedPreferences("prefs",0);
boolean firstRun=settings.getBoolean("firstRun",false);
if(firstRun==false)//if running for first time
{
SharedPreferences.Editor editor=settings.edit();
editor.putBoolean("firstRun",true);
editor.commit();
//execute your code for first time
}
else
{
if(alldataSaved == false)
{
SharedPreferences.Editor editor=prefs.edit();
editor.putBoolean("SecondRun",true);
editor.commit();
Log.e("Second"," Steps !!!!");
}
else
{
Intent iSubmit = new Intent(Registration_Form.this,Employee_List.class);
startActivity(iSubmit);
finish();
//Default Activity startActivity(a);
}
}
databaseHelper = new DatabaseHelper(this);
databaseHelper.onOpen(db);
radioGroup_FinancialYaer = (RadioGroup)findViewById(R.id.radioGroupFinanncialYear);
btnSubmit = (Button) findViewById(R.id.buttonSubmit);
btnSubmit.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
final String stringEmail_Id = et_Email_Id.getText().toString()
.trim();
final String stringCompanyWebsite = et_CompanyWebsite.getText()
.toString().trim();
if ((et_CompanyName.getText().toString().isEmpty()))
{
et_CompanyName.setError("Field Can Not Be Empty !");
}
else if (!et_CompanyName.getText().toString().trim()
.matches("[a-zA-Z ]+"))
{
et_CompanyName.setError("Accept Alphabets Only.");
}
else if ((et_EmployeeName.getText().toString().isEmpty()))
{
et_EmployeeName.setError("Field Can Not Be Empty !");
}
else if (!et_EmployeeName.getText().toString().trim()
.matches("[a-zA-Z ]+"))
{
et_EmployeeName.setError("Accept Alphabets Only.");
}
else if ((et_CompanyWebsite.getText().toString().isEmpty()))
{
et_CompanyWebsite.setError("Field Can Not Be Empty !");
}
else if (!isValidUrl(stringCompanyWebsite))
{
et_CompanyWebsite.setError("Invalid URL");
}
else if ((et_ContactNumber.getText().toString().isEmpty()))
{
et_ContactNumber.setError("Field Can Not Be Empty !");
}
else if (!isValidEmail(stringEmail_Id))
{
et_Email_Id.setError("Invalid Email");
}
else
{
String stringCompanyName = et_CompanyName.getText()
.toString().trim();
String stringContactNumber = et_ContactNumber.getText()
.toString().trim();
String stringEmployeeName = et_EmployeeName.getText()
.toString().trim();
int selectedId = radioGroup_FinancialYaer.getCheckedRadioButtonId();
Log.e("selectedId "," = " + selectedId);
radioButton_FinancialYaer = (RadioButton) findViewById(selectedId);
strFinancialYear = radioButton_FinancialYaer.getText().toString().trim();
Log.e("strRadioButton "," = " + strFinancialYear);
databaseHelper.insertRegstrationDetails(stringCompanyName,
stringEmployeeName, stringCompanyWebsite,
stringContactNumber, stringEmail_Id, strFinancialYear);
System.out.println("Data Inserted Successfully !!! ");
Intent iSubmit = new Intent(Registration_Form.this,Staff_Employee_Details.class);
startActivity(iSubmit);
finish();
}
}
});
}
答案 0 :(得分：0)
您可以使用sharedPreference。您可以将每个edittext的值保存在一个sharedprefrerece中（每个edittext使用唯一键，并在焦点更改时设置值。请参阅示例:)
EditText txtEdit= (EditText) findViewById(R.id.edittxt);
txtEdit.setOnFocusChangeListener(new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
if(!hasFocus)
//do job here when Edittext lose focus
//means save value here
}
});
并在创建时加载这些保存的值。 希望你能从中得到一些想法
编辑：这是适合您的情况
if(firstRun==false)//if running for first time
{
SharedPreferences.Editor editor=settings.edit();
editor.putBoolean("firstRun",true);
editor.commit();
//execute your code for first time
}
else
{
if(alldataSaved==false)
{
//stay in this activiy
}
else
{
Intent iSubmit = new Intent(Registration_Form.this,Employee_List.class);
startActivity(iSubmit);
finish();
//Default Activity startActivity(a);
}
}
答案 1 :(得分：0)
你可以简单地使用这个
Intent intent = getIntent();
finish();
startActivity(intent);
我希望这可以工作
答案 2 :(得分：0)
这不是Android的工作方式。你无法恢复＆＃34;同样的活动以那种方式。然而，您可以保存EditText内容，例如在onPause（）或onStop（）函数中，将EditTexts的内容保存为字符串，将它们放入List中，然后将该List序列化为文件。在onResume（）或onStart（）方法中，从文件中反序列化此数据。
此处显示了此类序列化的示例，但我也会将其粘贴到此处： Put objects into bundle
序列化：
private List<String> list = new ArrayList<String>();
@Override
public void onPause()
{
super.onPause();
FileOutputStream out = null;
try
{
out = openFileOutput("ModelBackup",Context.MODE_PRIVATE);
try
{
ObjectOutputStream oos = new ObjectOutputStream(out);
oos.writeObject(list);
}
catch(IOException e)
{
Log.d(this.getClass().toString(), e.getMessage());
}
}
catch(FileNotFoundException e)
{
Log.d(this.getClass().toString(), e.getMessage());
}
finally
{
try
{
if(out != null) out.close();
}
catch(IOException e)
{
Log.d(this.getClass().toString(), e.getMessage());
}
}
}
反序列化：
@Override
public void onResume()
{
super.onResume();
FileInputStream in = null;
try
{
in = openFileInput("ModelBackup");
ObjectInputStream oos = new ObjectInputStream(in);
try
{
list = (List<String>)oos.readObject();
}
catch(ClassNotFoundException e)
{
list = null;
}
}
catch(IOException e)
{
Log.d(this.getClass().toString(), e.getMessage());
}
finally
{
try
{
if(in != null) in.close();
}
catch(IOException e) {}
}
}
答案 3 :(得分：0)
如果从片段重新启动活动，我会这样做：
new Handler().post(new Runnable() {
@Override
public void run()
{
Intent intent = getActivity().getIntent();
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_NO_ANIMATION);
getActivity().overridePendingTransition(0, 0);
getActivity().finish();
getActivity().overridePendingTransition(0, 0);
startActivity(intent);
}
});