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為什么我切換屏的時候不會調用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!!");
? ?}
}

Brilliant

2016-08-12

源自：Android-重識Activity 3-1

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qq_獅想者_0 回答被采納 +3 積分
2016-08-13

@Override

protected void onSaveInstanceState(Bundle outState) {

super.onSaveInstanceState(outState);

}

保存數據用的是這個方法，參數是只有一個Buddle類型的，你看一下你方法的參數。我剛學了這個。

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Brilliant 提問者

非常感謝！是我太粗心啦

2016-08-13 回復有任何疑惑可以回復我~

放學路上的小學生
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個參數的方法，內部調用了1個參數的同名方法，所以是一樣的。

開頭也寫了，same as。

0 回復有任何疑惑可以回復我~

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