Java R.id.container 未解决
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R.id.container not resolved
提问by Alexander
I bought book Bill Phillips & Brian Hardy "Android programming the big nerd ranch guide". And in the first chapter, I created Gradle solution using idea instead eclipse. This project generated by idea doesn't compile.
我买了一本书 Bill Phillips & Brian Hardy “Android 编程大书呆子牧场指南”。在第一章中，我使用idea而不是eclipse创建了Gradle解决方案。这个idea生成的项目无法编译。
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quiz);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new DummyFragment())
.commit();
}
}
xml:
xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".QuizActivity$DummyFragment">
<TextView
android:text="@string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
error: cannot find symbol variable container
错误：找不到符号变量容器
I have not changed anything, but project doesn't compile
我没有改变任何东西，但项目没有编译
Please help me.
请帮我。
采纳答案by Shayan Pourvatan
as i mention in comment you must add following code in to your layout:
正如我在评论中提到的，您必须将以下代码添加到您的布局中：
android:id = "@+id/container"
you get that error because you don't have containerid in your xmlfile
您收到该错误是因为您container的xml文件中没有id
回答by Chintan Soni
Adding android:id="@+id/container"to your RelativeLayout will remove the error.
添加android:id="@+id/container"到您的 RelativeLayout 将消除错误。
