臨時保存數據

@override
protected void onSaveInstanceState(Bundle outState) {
	super.onSaveInstanceState(outState);
	outState.putString("KEY",textView.getText().toString());
}

protected void onCreate(Bundle saveInstanceState) {
	super.onCreate(saveInstanceState);
	if(saveInstanceState != null) {
		String s = saveInstanceState.getString("key");
		textView.setText(s);
}