android - DrawerLayout 必须使用 MeasureSpec.EXACTLY 进行测量。在 android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java :994)

Question

这是我的 mainlayout 文件。

这是我编写与抽屉导航相关的代码的主要布局文件，还使用 ​​include 包含工具栏。

    <LinearLayout android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:android="http://schemas.android.com/apk/res/android">
        <android.support.v4.widget.DrawerLayout
            android:id="@+id/navigation_Drawerlayout"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            tools:openDrawer="start">
            <include layout="@layout/navigation_drawerlayout" />

            <android.support.design.widget.NavigationView
                android:id="@+id/navigation_View"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_gravity="start"
                android:fitsSystemWindows="true">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">

                    <include layout="@layout/navigation_headerview" />

                    <android.support.v7.widget.RecyclerView
                        android:id="@+id/navigationRecycleView"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"></android.support.v7.widget.RecyclerView>
                </LinearLayout>


            </android.support.design.widget.NavigationView>


        </android.support.v4.widget.DrawerLayout>










    </LinearLayout>

navigation_toolbarlayout.xml此布局定义了上面代码中使用的 toolbar 代码

    <?xml version="1.0" encoding="utf-8"?>
    <android.support.design.widget.CoordinatorLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.design.widget.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:theme="@style/ThemeOverlay.AppCompat.ActionBar">

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@color/colorPrimary"
                android:minHeight="?attr/actionBarSize"
                app:titleTextColor="@android:color/white">

                <!-- Screen title -->
                <TextView
                    android:id="@+id/toolbarTitle"
                    style="@style/TextAppearance.AppCompat.Widget.ActionBar.Title"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:text=""
                    android:textColor="@android:color/white"></TextView>
            </android.support.v7.widget.Toolbar>
        </android.support.design.widget.AppBarLayout>
    </android.support.design.widget.CoordinatorLayout>

日志

这是我的应用程序中出现的错误日志。此 logcat 错误将帮助您找出主要问题是什么

java.lang.IllegalArgumentException: DrawerLayout must be measured with MeasureSpec.EXACTLY. at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:994) at android.view.View.measure(View.java:18809) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) at android.widget.LinearLayout.measureVertical(LinearLayout.java:748) at android.widget.LinearLayout.onMeasure(LinearLayout.java:630) at android.view.View.measure(View.java:18809) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) at android.widget.LinearLayout.measureVertical(LinearLayout.java:748) at android.widget.LinearLayout.onMeasure(LinearLayout.java:630) at android.view.View.measure(View.java:18809) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5954)

Answer 1

根据你的问题

java.lang.IllegalArgumentException: DrawerLayout must be measured with MeasureSpec.EXACTLY

所以你应该为你的 DrawerLayout 设置 EXACTLY 宽度。

你可以设置android:layout_width="match_parent"再试一次。

改变

<android.support.v4.widget.DrawerLayout
            android:id="@+id/navigation_Drawerlayout"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            tools:openDrawer="start">
            <include layout="@layout/navigation_drawerlayout" />

到

<android.support.v4.widget.DrawerLayout
            android:id="@+id/navigation_Drawerlayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            tools:openDrawer="start">
            <include layout="@layout/navigation_drawerlayout" />