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我開始學習Android的工作室。我得到一個相對佈局的XML文件錯誤,請看看,另外我有一些丟失/刪除的XML內容,導致error.Please看看,並幫助我。 目前activity_main.xml中的代碼如下:什麼是在XML文件中,指出錯誤解析XML錯誤:沒有很好地形成(標記無效)在Android Studio中
<?xml version="1.0" encoding="utf-8"?>
android:fitsSystemWindows="true"
tools:context="com.mindbuzz.big.calculator.MainActivity"> <android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#ed0d0d"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_gravity="bottom|end"`enter code here`
android:layout_margin="@dimen/fab_margin "
app:srcCompat="@android:drawable/ic_dialog_email"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
<include layout="@layout/content_main"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignBottom="@+id/appBarLayout"
android:layout_below="@+id/appBarLayout" />
</ android:layout_width="wrap_content"
android:layout_height="wrap_content"> </android.support.design.widget.CoordinatorLayout>
赫斯是錯誤的預覽渲染: 呈現問題
注:
This project contains Java compilation errors, which can cause rendering failures for custom views. Fix compilation problems first.
注:
One or more layouts are missing the layout_width or layout_height attributes. These are required in most layouts.<br/
<android.support.design.widget.AppBarLayout> does not set the required layout_width attribute: Set to wrap_content, Set to match_parent<br />
<android.support.design.widget.AppBarLayout> does not set the required layout_height attribute: Set to wrap_content, Set to match_parent<br />
<android.support.v7.widget.Toolbar> does not set the required layout_width attribute: Set to wrap_content, Set to match_parent<br/
<android.support.v7.widget.Toolbar> does not set the required layout_height attribute: Set to wrap_content, Set to match_parent<br/
<android.support.design.widget.FloatingActionButton> does not set the required layout_width attribute: Set to wrap_content, Set to match_parent <br />
<android.support.design.widget.FloatingActionButton> does not set the required layout_height attribute: Set to wrap_content, Set to match_parent <br />
Or: Automatically add all missing attributes
Gradle構建顯示以下錯誤:
Error:(3) Error parsing XML: not well-formed (invalid token)
Error:(3) Error parsing XML: not well-formed (invalid token)
Error:Execution failed for task ':app:processDebugResources'.
> com.android.ide.common.process.ProcessException: Failed to execute aapt
謝謝。
爲什麼你有這樣的'安卓:layout_width = 「WRAP_CONTENT」 機器人:layout_height = 「WRAP_CONTENT」>'? – codeMagic
@codeMagic的嘖我是指具有描述它以包圍在當前佈局的所有內容使用它。 – BHASKAR
@BHASKAR,抱歉,註釋不語法或易懂的英語。 –