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当一个旋转器被激活时,有办法得到通知吗?
原标题:Is there a way to get notified when a spinner is activated?

我希望当一个旋转器被激活并显示下调列表时有通知,但我找不到通知。 当第一次显示时, 我想更改列表中的条目。 我正使用一个与旋转器一起的阵列设计师。 谢谢 。

问题回答

听懂你的话我不知道

但只是设置一个旗帜,像这样:

boolean isTriggeredBefore = false;

如果这是假的, 请使用其他值来替换该阵列适应器, 例如 :

if(isTriggeredBefore)
     ArrayAdapter(this, R.array.list, R.id.tv);
else
     ArrayAdapter(this, R.array.listFirstTime, R.id.tv);

希望有帮助!





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