Blankj / Blankj/AndroidUtilCode

FragmentUtils方法 getPreFragment

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Description

## 描述需求

获取当前fragment的前一个fragment

## 可借鉴的
FragmentUtils.getPreFragment

获取目标fragment的前一个fragment
之前版本有这个方法,现在怎么没呢?我使用以下方法都无法获取到栈内fragment的集合

getFragments : 获取同级别的 fragment
getFragmentsInStack : 获取同级别栈中的 fragment
getAllFragments : 获取所有 fragment
getAllFragmentsInStack: 获取栈中所有 fragment

请指教,感谢

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