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Update PLStreamingViewManager.java #20

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@zzkkss zzkkss commented Aug 8, 2020

因为view每次启动,都会重新调用createViewInstance,但是因为mCameraPreviewFrameView的问题,导致一旦stop或者页面切换之后,再次调用都会失败,所以加一个判断,可以解决重开页面调用白屏的问题。
---------以下是七牛技术支持的回复--------
组件是和 view 绑定的,但是退后台每次回来会执行 createViewInstance,但是没有走 onDropViewInstance,所以会重复创建一个 view 的界面出来,设置 singleTop 之后就不会执行 createViewInstance 了,便可以保证操作的唯一性。

因为view每次启动,都会重新调用createViewInstance,但是因为mCameraPreviewFrameView的问题,导致一旦stop或者页面切换之后,再次调用都会失败,所以加一个判断,可以解决重开页面调用白屏的问题。
---------以下是七牛技术支持的回复--------
组件是和 view 绑定的,但是退后台每次回来会执行 createViewInstance,但是没有走 onDropViewInstance,所以会重复创建一个 view 的界面出来,设置 singleTop 之后就不会执行 createViewInstance 了,便可以保证操作的唯一性。
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