錯誤：無法找到符號變量relativeLayout

-1

我收到錯誤，當我運行該項目。我從我的java文件和gradle控制檯附加代碼這裏是代碼形式activity_funfacts.xml。有一個RelativeLayout標記這裏錯誤：無法找到符號變量relativeLayout

<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=".FunFactsMyActivity" 
    android:background="#ff51b46d"> 

    <TextView 
     android:text="Did you know" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:textSize="24dp" 
     android:textColor="#80ffffff" /> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Aint strech it when they wake up in the morning" 
     android:id="@+id/factTextView" 
     android:layout_centerVertical="true" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentStart="true" 
     android:textSize="24dp" /> 

    <Button 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="Show Another Fun Fact" 
     android:id="@+id/showFactbButton" 
     android:layout_alignParentBottom="true" 
     android:layout_centerHorizontal="true" 
     android:background="@android:color/white" /> 

</RelativeLayout>

輸出從搖籃控制檯

Executing tasks: [:app:assembleDebug] 

Configuration on demand is an incubating feature. 
:app:preBuild UP-TO-DATE 
:app:preDebugBuild UP-TO-DATE 
:app:compileDebugNdk UP-TO-DATE 
:app:checkDebugManifest 
:app:prepareDebugDependencies 
:app:compileDebugAidl UP-TO-DATE 
:app:compileDebugRenderscript UP-TO-DATE 
:app:generateDebugBuildConfig UP-TO-DATE 
:app:generateDebugAssets UP-TO-DATE 
:app:mergeDebugAssets UP-TO-DATE 
:app:generateDebugResValues UP-TO-DATE 
:app:generateDebugResources UP-TO-DATE 
:app:mergeDebugResources UP-TO-DATE 
:app:processDebugManifest UP-TO-DATE 
:app:processDebugResources UP-TO-DATE 
:app:generateDebugSources UP-TO-DATE 
:app:compileDebugJava 
/Users/AndroidStudioProjects/FunFacts/app/src/main/java/com/example/funfacts/FunFactsMyActivity.java:29: error: cannot find symbol 
     final RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.relativeLayout); 
                       ^
    symbol: variable relativeLayout 
    location: class id 
1 error 

FAILED 

FAILURE: Build failed with an exception. 

* What went wrong: 
Execution failed for task ':app:compileDebugJava'. 
> Compilation failed; see the compiler error output for details. 

* Try: 
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. 



    BUILD FAILED 

Total time: 5.252 secs

來源

2015-04-08 Sam Lot

您需要在RelativeLayout標記下定義一個標識爲android:id="@+id/relativeLayout"。

來源

2015-04-08 16:16:50

這個錯誤表明你沒有在你的佈局XML文件中的ID relativeLayout。

請檢查R.layout.activity_funfacts是否包含RelativeLayout的編號爲relativeLayout。

來源

2015-04-08 15:51:22 Knossos

更多問題而不是答案？ – Blackbelt

@Blackbelt：真的，改進的答案。 – Knossos

@Knossos：我在哪裏可以找到R.layout.activity_funfacts？ –

錯誤：無法找到符號變量relativeLayout

回答

相關問題