[英]How to keep Maurycyw's StaggeredGridView position on setColumnCount when orientation changed
[英]Keep spinner position when screen orientation is changed
屏幕旋转时我想保持微调器位置
我已经在这里查看了一些答案,到目前为止,以下内容
目的-存储微调器的位置
protected void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
flav1Spinner = (Spinner)findViewById(R.id.Combo_InvChoice1);
Integer flav1 = flav1Spinner.getSelectedItemPosition();
savedInstanceState.putInt("cho1", flav1);
}
目标-恢复位置
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_calculation);
Locale.setDefault(Locale.US);
if (savedInstanceState != null){
flav1Spinner = (Spinner)findViewById(R.id.Combo_InvChoice1);
Integer flav1 = savedInstanceState.getInt("cho1");
flav1Spinner.setSelection(flav1);
}
但是,在调试时,我可以看到Integer Flav1正在为其分配一个值,并且正在检索数字,但是微调器没有更改其位置。 有什么建议么?
您可以通过onSaveInstanceState()
,如下所示
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("yourSpinner", yourSpinner.getSelectedItemPosition());
// do this for each of your Spinner
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
yourSpinner.setSelection(savedInstanceState.getInt("yourSpinner", 0));
// do this for every text views
}
}
选中保存活动状态 ,它将帮助您获取更多详细信息。
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