滚动后折叠工具栏，tabLayout和ViewPager无法正常工作

时间：2015-09-21 09:46:11

标签： android android-viewpager android-tablayout android-collapsingtoolbarlayout android-scrolling

enter image description here

我正在尝试在我的应用中为用户个人资料屏幕创建类似的布局。 这就是我需要的： 1.后退，加号和图像按钮应位于工具栏中的折叠状态和展开状态。 2.工具栏在展开状态下应该是透明的，并在折叠时更改为内容稀松布的颜色。 3.服务（180）和熟（300）文本应该是可点击的，并导致其他活动。 4.在折叠时，tabLayout应固定在工具栏下方。 5.附加到选项卡的ViewPager应该可以正常工作，它包含listview。

这是我的尝试：

<?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"
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#231f20"
    android:fitsSystemWindows="true">

    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="?attr/actionBarSize"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    <android.support.design.widget.TabLayout
        android:id="@+id/tabs"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:layout_gravity="bottom"
        android:background="#231f20"
        app:layout_anchor="@+id/appbar"
        app:layout_anchorGravity="bottom"
        app:tabGravity="fill"
        app:tabMode="fixed" />

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            app:contentScrim="#FAC80A"
            app:layout_scrollFlags="scroll|exitUntilCollapsed"
            app:expandedTitleMarginStart="200dp"
            app:expandedTitleMarginBottom="110dp">


            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fitsSystemWindows="true"
                app:layout_collapseMode="parallax">

                // Contains the background image, profile pic,textview etc.

            </RelativeLayout>

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light">

            </android.support.v7.widget.Toolbar>

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

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


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

问题：在开始时点击折叠工具栏的内容（相对布局内）中的任何位置都不会引起任何问题，但只要我进行一些滚动（折叠工具栏，滚动浏览器内容，更改标签）和再次回到展开状态的折叠工具栏，然后单击它上面的任意位置，应用程序崩溃。我收到以下错误：

09-21 07:28:38.740    5462-5462/com.galleri5.android E/InputEventReceiver﹕ Exception dispatching input event.
09-21 07:28:38.741    5462-5462/com.galleri5.android E/MessageQueue-JNI﹕ Exception in MessageQueue callback: handleReceiveCallback
09-21 07:28:38.744    5462-5462/com.galleri5.android E/MessageQueue-JNI﹕ java.lang.NullPointerException: Attempt to invoke virtual method 'float android.view.MotionEvent.getX()' on a null object reference
            at android.view.View.onTouchEvent(View.java:9321)
            at android.support.design.widget.CoordinatorLayout.onTouchEvent(CoordinatorLayout.java:449)
            at android.view.View.dispatchTouchEvent(View.java:8388)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2424)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2158)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2569)
            at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1743)
            at android.app.Activity.dispatchTouchEvent(Activity.java:2739)
            at android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:60)
            at android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:60)
            at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2530)
            at android.view.View.dispatchPointerEvent(View.java:8578)
            at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4028)
            at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3894)
            at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3456)
            at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3509)
            at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3475)
            at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3585)
            at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3483)
            at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3642)
            at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3456)
            at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3509)
            at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3475)
            at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3483)
            at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3456)
            at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5708)
            at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5682)
            at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5653)
            at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5798)
            at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
            at android.os.MessageQueue.nativePollOnce(Native Method)
            at android.os.MessageQueue.next(MessageQueue.java:143)
            at android.os.Looper.loop(Looper.java:122)
            at android.app.ActivityThread.main(ActivityThread.java:5254)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:693)
09-21 07:28:38.747    5462-5462/com.galleri5.android E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.galleri5.android, PID: 5462
    java.lang.NullPointerException: Attempt to invoke virtual method 'float android.view.MotionEvent.getX()' on a null object reference
            at android.view.View.onTouchEvent(View.java:9321)
            at android.support.design.widget.CoordinatorLayout.onTouchEvent(CoordinatorLayout.java:449)
            at android.view.View.dispatchTouchEvent(View.java:8388)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2424)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2158)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
            at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2119)
            at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2569)
            at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1743)
            at android.app.Activity.dispatchTouchEvent(Activity.java:2739)
            at android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:60)
            at android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:60)
            at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2530)
            at android.view.View.dispatchPointerEvent(View.java:8578)
            at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4028)
            at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3894)
            at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3456)
            at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3509)
            at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3475)
            at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3585)
            at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3483)
            at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3642)
            at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3456)
            at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3509)
            at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3475)
            at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3483)
            at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3456)
            at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5708)
            at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5682)
            at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5653)
            at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5798)
            at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
            at android.os.MessageQueue.nativePollOnce(Native Method)
            at android.os.MessageQueue.next(MessageQueue.java:143)
            at android.os.Looper.loop(Looper.java:122)
            at android.app.ActivityThread.main(ActivityThread.java:5254)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:693)

此行为的原因是什么？如何纠正此问题。

1 个答案:

答案 0 :(得分：0)

这是android support library的问题。

请参阅此链接了解详情CoordinatorLayout NullPointerException in onTouchEvent

根据上述链接，此问题已在android support library version-23.0.1

中修复

更新您的Android支持库以解决错误。

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