[英]When I rotate the second fragment, it goes back to the first
I have an activity with a FrameLayout that contains 3 fragments.我有一个包含 3 个片段的 FrameLayout 的活动。
When I rotate in landscape the second fragment, my activity reload and i see the first fragment.当我横向旋转第二个片段时,我的活动重新加载,我看到第一个片段。
How can i avoid this problem?我怎样才能避免这个问题?
MyActivity:我的活动:
<FrameLayout
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
MyActivity.java我的活动.java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_system_signup_user);
SignUpFragment fragmentOne = new SignUpFragment();
getSupportFragmentManager().beginTransaction().add(R.id.viewPager, fragmentOne).commit();
}
After recreation method onCreate
calling again, to prevent from adding fragment to container you can do :在重新调用onCreate
方法后,为了防止将片段添加到容器中,您可以执行以下操作:
...
if (savedInstanceState == null) {
SignUpFragment fragmentOne = new SignUpFragment();
getSupportFragmentManager().beginTransaction().add(R.id.viewPager, fragmentOne).commit();
}
...
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