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嗨，我試圖加載片段時，返回到應用程序。我試圖通過在我的onResume（）中的onPause（）和session =「active」中設置系統偏好設置中的字符串來實現這一點，該字符串中的session =「not active」;問題是當我導航到一個新的活動，它也運行onPause（），因此設置會話不活動。結果是每次我從一個活動到另一個活動時，我的片段都會加載。我應該提及片段包含一個引腳輸入以保證數據的安全，這就是爲什麼我需要它。所以總結起來有沒有人知道如何檢測用戶是否返回到應用程序？當用戶重新打開應用程序時加載片段android
繼承人是我迄今試圖
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
EasyTracker.getInstance(this).activityStop(this); // Add this method.
saveStringToPreference(this, "user_session", "not_active");
Log.v("Homepage", "onStop");
Log.v("Homepage", "user_session= " + returnStringFromPreference(this, "user_session"));
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
saveStringToPreference(this, "user_session", "not_active");
Log.v("Homepage", "onDestroy");
Log.v("Homepage", "user_session= " + returnStringFromPreference(this, "user_session"));
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
saveStringToPreference(this, "user_session", "active");
ActionBar actionBar = getActionBar();
actionBar.hide();
Fragment pinFragment = new PinFragment();
FragmentManager pinFragmentManager = getFragmentManager();
pinFragmentManager.beginTransaction().replace(R.id.content_frame, pinFragment).commit();
Log.v("Homepage", "onResume");
Log.v("Homepage", "user_session= " + returnStringFromPreference(this, "user_session"));
}
public void userPin(){
if(userHasSetPin(this) == true){
if(returnStringFromPreference(this, "user_session").equals("active")){
fragment = new homePageFragment();
fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
}else{
ActionBar actionBar = getActionBar();
actionBar.hide();
Fragment pinFragment = new PinFragment();
FragmentManager pinFragmentManager = getFragmentManager();
pinFragmentManager.beginTransaction().replace(R.id.content_frame, pinFragment).commit();
}
}else{
ActionBar actionBar = getActionBar();
actionBar.hide();
Fragment pinSetupFragment = new PinSetupFragment();
FragmentManager pinSetupFragmentManager = getFragmentManager();
pinSetupFragmentManager.beginTransaction().replace(R.id.content_frame, pinSetupFragment).commit();
}
}
userPin（），然後在我的onCreate運行（）;