片段内的 DrawerLayout 提供 Measure.EXACTLY 错误

Question

根据这个相关问题Make drawerlayout inside fragment full screen height 我不确定是对还是错，但似乎片段总是不是全屏的，即它只是复制其内容的布局属性并使用它，这就是为什么你可以在一个布局中拥有两个或多个片段的原因。

现在我在将Drawerlayout 的高度设置为match_parent 时遇到问题，我得到的错误的完整堆栈粘贴在下面。我已经尝试了所有我知道的强制设置布局参数的方法，但它只是不起作用，如果我给布局一个特定的 dp，比如500dp，它就会起作用。

FATAL EXCEPTION: main
                                                                       Process: whalescorp.fabuloxity, PID: 16319
                                                                       java.lang.IllegalArgumentException: DrawerLayout must be measured with MeasureSpec.EXACTLY.
                                                                           at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:1041)
                                                                           at android.view.View.measure(View.java:19857)
                                                                           at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                           at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                                                                           at android.view.View.measure(View.java:19857)
                                                                           at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                           at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
                                                                           at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
                                                                           at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
                                                                           at android.view.View.measure(View.java:19857)
                                                                           at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                           at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                                                                           at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
                                                                           at android.view.View.measure(View.java:19857)
                                                                           at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                           at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
                                                                           at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
                                                                           at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
                                                                           at android.view.View.measure(View.java:19857)
                                                                           at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                           at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                                                                           at android.view.View.measure(View.java:19857)
                                                                           at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                           at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464)
                                                                           at android.widget.LinearLayout.measureVertical(LinearLayout.java:758)
                                                                           at android.widget.LinearLayout.onMeasure(LinearLayout.java:640)
                                                                           at android.view.View.measure(View.java:19857)
                                                                           at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6083)
                                                                           at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                                                                           at com.android.internal.policy.DecorView.onMeasure(DecorView.java:689)
                                                                           at android.view.View.measure(View.java:19857)
                                                                           at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2275)
                                                                           at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1366)
                                                                           at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1619)
                                                                           at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
                                                                           at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6337)
                                                                           at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
                                                                           at android.view.Choreographer.doCallbacks(Choreographer.java:686)
                                                                           at android.view.Choreographer.doFrame(Choreographer.java:621)
                                                                           at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
                                                                           at android.os.Handler.handleCallback(Handler.java:751)
                                                                           at android.os.Handler.dispatchMessage(Handler.java:95)
                                                                           at android.os.Looper.loop(Looper.java:154)
                                                                           at android.app.ActivityThread.main(ActivityThread.java:6119)
                                                                           at java.lang.reflect.Method.invoke(Native Method)
                                                                           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
                                                                           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

Answer 1

这也可能由于新的 ConstraintLayout 而发生。确保抽屉布局不在 ConstraintLayout 的层次结构中。

这对于 Android 来说是一个非常愚蠢的错误。我会尝试为它提交一个错误。

Answer 2

我决定通过扩展 DrawerLayout 本身来创建一个自定义 DrawerLayout，除了复制 DrawerLayout 中的方法之外什么也没做。但我唯一做的就是@Override DrawerLayout 中的 onMeasure 方法。

下面是我的自定义 DrawerLayout 以及我在布局中如何调用它::

public class WhalesDrawerLayout extends DrawerLayout {

    public WhalesDrawerLayout(Context context) {
        super(context);
    }

    public WhalesDrawerLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public WhalesDrawerLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        widthMeasureSpec = MeasureSpec.makeMeasureSpec(
                MeasureSpec.getSize(widthMeasureSpec), MeasureSpec.EXACTLY);
        heightMeasureSpec = MeasureSpec.makeMeasureSpec(
                MeasureSpec.getSize(heightMeasureSpec), MeasureSpec.EXACTLY);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}

在你的布局中应该这样调用：

<whalescorp.projectname.packagename.WhalesDrawerLayout
    android:id="@+id/drawer"
    android:fitsSystemWindows="true"
    tools:openDrawer="start"
    android:layout_height="match_parent"
    android:layout_width="match_parent">

</whalescorp.projectname.packagename.WhalesDrawerLayout>

通过在你的activity.xml中输入类名，它会带来建议，你也可以很容易地得到它，同时你需要在它工作之前重建你的项目，你可以在你的代码中调用它这::

final WhalesDrawerLayout drawerLayout = l.findViewById(R.id.drawer);