我有活动＆＃39; A＆＃39;和活动＆＃39;。在活动＆＃39; A＆＃39; ，如果我有6个EditText并且用户只输入3然后我退出我的应用程序点击onBackPressed按钮而不提交正在输入的EditText数据，然后每当我重新启动我的应用程序时我想要同样的活动＆＃39; A＆＃ 39;在启动时。但是，当我运行并只输入3个编辑文本和3个剩余时，我第一次退出我的应用程序并再次重新启动应用程序启动器活动＆＃39; A＆＃39;是开始，但是当我第二次做同样的事情时，它会拨打第二个活动＆＃39; B＆＃39;。我怎么能这样做。有人可以帮助我。感谢您的光临。
Hare是我的活动代码
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();
Log.e("Boolean Value" , " = " + appWidgetId);
}
}
});
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();
Log.e("Boolean Value" , " = " + appWidgetId);
}
}
});
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();
Log.e("Boolean Value" , " = " + appWidgetId);
}
}
});
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();
Log.e("Boolean Value" , " = " + appWidgetId);
}
}
});
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();
Log.e("Boolean Value" , " = " + appWidgetId);
}
}
});
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(A.this,B.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(A.this,B.class);
startActivity(iSubmit);
finish();
}
}
});
}
// validating email id
private boolean isValidEmail(String email) {
String EMAIL_PATTERN = "[a-zA-Z0-9\\+\\.\\_\\%\\-\\+]{1,256}" + "\\@"
+ "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" + "(" + "\\."
+ "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" + ")+";
Pattern pattern = Pattern.compile(EMAIL_PATTERN);
Matcher matcher = pattern.matcher(email);
return matcher.matches();
}
private boolean isValidUrl(String url) {
Pattern p = Patterns.WEB_URL;
Matcher m = p.matcher(url);
if(m.matches())
return true;
else
return false;
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK)) {
AlertDialog.Builder alertbox = new AlertDialog.Builder(Registration_Form.this);
alertbox.setTitle("Do you wish to exit ?");
alertbox.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface arg0, int arg1) {
// finish used for destroyed activity
finish();
}
});
alertbox.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface arg0, int arg1) {
// Nothing will be happened when clicked on no button
// of Dialog
}
});
alertbox.show();
}
return super.onKeyDown(keyCode, event);
}
}
答案 0 :(得分：0)
保存共享首选项中的变量，如果用户已经登录，我之前已经为登录模块执行了该操作，那么我的启动器活动将不会启动并且
SharedPreferences.Editor editor = mPrefs.edit();
editor.putInt("login",201);
editor.commit();
你可以在你的启动器活动中检查它
Intent intent;
if(checkFristLogin()){
intent = new Intent(SplashActivity.this, MyNewMainActivity.class);
}else{
intent = new Intent(SplashActivity.this,MainActivity.class);
}
startActivity(intent);
checkFirstLogin功能在这里
SharedPreferences mPrefs; // make this field in your activity class
private boolean checkFristLogin() {
// TODO Auto-generated method stub
if(mPrefs == null){
mPrefs = this.getSharedPreferences("MyGamePreferences", android.content.Context.MODE_PRIVATE);
}
if(mPrefs.getInt("login", -401)==201)return true;
else return false;
}
希望它能解决你的问题