使用PictureSelectorFragment时，点击图片预览图片时报错

#### 使用PictureSelectorFragment时，点击图片预览图片时报错

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原因：FragmentInjectManager.injectFragment使用了R.id.fragment_container，Activity中没有fragment_container的View
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解决方案：FragmentInjectManager.injectFragment更换为FragmentInjectManager.injectSystemRoomFragment
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临时解决方案：重写config.setPreviewInterceptListener，使用FragmentInjectManager.injectSystemRoomFragment打开
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Locate PictureSelectorFragment's preview flow and the FragmentInjectManager.injectFragment call described in the issue. Compare it with injectSystemRoomFragment, then verify that preview works in an Activity without a fragment_container view; the issue also identifies config.setPreviewInterceptListener as a temporary workaround to compare against.

Written by the indexing model from the issue text.