為什么我切換屏的時候不會調(diào)用onsaveInstance
public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) {
? ?super.onSaveInstanceState(outState, outPersistentState);
? ?outState.putString("data","lalalala");
? ?Log.d("tag", "onSaveInstanceState()!!!!!!");
}
@Override
protected void onCreate(Bundle savedInstanceState) {
? ?super.onCreate(savedInstanceState);
? ?setContentView(R.layout.activity_main);
? ?Log.d("tag", "MainActivity onCreate?。。。。。。。。。。。?);
? ?textView = (TextView) findViewById(R.id.text);
? ?if (savedInstanceState != null) {
? ? ? ?textView.setText( savedInstanceState.getString("data")+"1!!");
? ?}
}
2016-08-13
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
}
保存數(shù)據(jù)用的是這個方法，參數(shù)是只有一個Buddle類型的，你看一下你方法的參數(shù)。我剛學了這個。
2017-05-05
/** ?*?This?is?the?same?as?{@link?#onSaveInstanceState}?but?is?called?for?activities ?*?created?with?the?attribute?{@link?android.R.attr#persistableMode}?set?to ?*?<code>persistAcrossReboots</code>.?The?{@link?android.os.PersistableBundle}?passed ?*?in?will?be?saved?and?presented?in?{@link?#onCreate(Bundle,?PersistableBundle)} ?*?the?first?time?that?this?activity?is?restarted?following?the?next?device?reboot. ?* ?*?@param?outState?Bundle?in?which?to?place?your?saved?state. ?*?@param?outPersistentState?State?which?will?be?saved?across?reboots. ?* ?*?@see?#onSaveInstanceState(Bundle) ?*?@see?#onCreate ?*?@see?#onRestoreInstanceState(Bundle,?PersistableBundle) ?*?@see?#onPause ?*/ public?void?onSaveInstanceState(Bundle?outState,?PersistableBundle?outPersistentState)?{ ????onSaveInstanceState(outState); }2個參數(shù)的方法，內(nèi)部調(diào)用了1個參數(shù)的同名方法，所以是一樣的。
開頭也寫了，same as。
2016-08-14
我也是啊，抄老師的代碼經(jīng)常抄錯，一起努力！