如何让不同的布局ID [英] how to get id in different layout

问题描述

我有 ID@ +用户ID /呼叫在 single_item.xml 当我使用 findVewById 它（布局 setcontextview（R.layout.main））.the应用程序崩溃。如何修正这个错误

i have id "@+id/call" in single_item.xml when i use findVewById it (the layout setcontextview(R.layout.main)) .the app crash .how to fix the error

推荐答案

您正在努力寻找一个视图（R.id.call）即宣布R.layout.single_item在layour R.layout.main，所以我估计是抛出一个空指针异常。

You are trying to find a View (R.id.call) that is declared in R.layout.single_item in the layour R.layout.main, so I guess it is throwing a Null Pointer Exception.

您应该要么宣布在main.xml中的文件@ +用户ID /呼叫的元素，或上下文​​视图设置为R.layout.single_item

You should either declare your "@+id/call" element in your main.xml file, or set the context view to R.layout.single_item

这篇关于如何让不同的布局ID的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！