搜索
搜索

子类化LinearLayout

Puchatek 发表于 Dev
20
呸

我在尝试创建LinearLayout的子类时遇到问题。我有这个布局的一个简单的片段

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/map_container"
            >

    <!-- Map view -->
    <org.osmdroid.views.MapView
        android:id="@+id/fragment_map_map_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clickable="true"/>


    <!-- Record description -->
    <com.example.SmallRecordDetailsWidget
        android:id="@+id/fragment_map_record_detail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />


</FrameLayout>

SmallRecordDetailsWidget是LinearLayout的子类。我的问题是我找不到正确的方法来实例化/膨胀它。

这是我的SmallRecordDetailsWidget现在的样子

public class SmallRecordDetailsWidget extends LinearLayout {


    private final int layoutID = R.layout.small_record_details;

    public SmallRecordDetailsWidget(Context context, AttributeSet attrs) {

        super(context, attrs);
        LayoutInflater.from(context).inflate(this.layoutID, this, true) ;

    }


}

然后在片段的onCreateView中，我正在做：

@Override
    public View onCreateView(
        LayoutInflater inflater, ViewGroup containter, Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.fragment_map, containter, false) ;

        this.mapView = (MapView)( view.findViewById(R.id.fragment_map_map_view) );
        this.recordDetailsWidget = (SmallRecordDetailsWidget)( view.findViewById(R.id.fragment_map_record_detail) ) ;

        return view;

    }

但这个代码刹车View view = inflater.inflate(...)带

android.view.InflateException: Binary XML file line #18: Error inflating class com.lexues.android.hari_prototype.views.SmallRecordDetailsWidget

我可以追踪到被扔在身上

LayoutInflater.from(context).inflate(this.layoutID, this, true) ;

行来自SmallRecordDetailsWidget的构造函数。充气机即使在简单的布局上也无法使用，就像这样

    <?xml version="1.0" encoding="utf-8"?>

    <!-- A widget with details of selected point of interest. This will be placed at the bottom of the map widget -->
    <com.lexues.android.hari_prototype.views.SmallRecordDetailsWidget xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/small_record_details_layout"
            android:layout_width="match_parent"
            android:layout_height="82dp">

    </com.lexues.android.hari_prototype.views.SmallRecordDetailsWidget>

现在，我将问题分解为能重现该问题的最小情况，所以看起来我在这里没有做任何有用的事情，但是目标是SmallRecordDetailsWidget要有一些简单的成员小部件，然后对它们进行一些工作。如果我能正确理解它们，只要它们会在布局文件中定义SmallRecordDetailsWidget为构造函数膨胀（作为root元素的子元素），那么它们也应该膨胀，以便以后可以使用进行掌握findViewById(...)。

编辑-添加了堆栈跟踪和一些额外的细节

堆栈跟踪为：

        09-01 09:24:18.661    6330-6330/com.lexues.android.hari_prototype E/AndroidRuntime﹕ FATAL EXCEPTION: main
        Process: com.lexues.android.hari_prototype, PID: 6330
        android.view.InflateException: Binary XML file line #18: Error inflating class com.lexues.android.hari_prototype.views.SmallRecordDetailsWidget
        at android.view.LayoutInflater.createView(LayoutInflater.java:626)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:702)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
        at com.lexues.android.hari_prototype.controllers.fragments.MapFragment.onCreateView(MapFragment.java:87)
        at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:938)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1115)
        at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
        at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1478)
        at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:478)
        at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
        at android.support.v4.view.ViewPager.populate(ViewPager.java:1068)
        at android.support.v4.view.ViewPager.populate(ViewPager.java:914)
        at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1436)
        at android.view.View.measure(View.java:17396)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
        at android.view.View.measure(View.java:17396)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
        at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:382)
        at android.view.View.measure(View.java:17396)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
        at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2505)
        at android.view.View.measure(View.java:17396)
        at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2175)
        at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1316)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1513)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1200)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6401)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:803)
        at android.view.Choreographer.doCallbacks(Choreographer.java:603)
        at android.view.Choreographer.doFrame(Choreographer.java:573)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:789)
        at android.os.Handler.handleCallback(Handler.java:733)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:157)
        at android.app.ActivityThread.main(ActivityThread.java:5335)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
        at dalvik.system.NativeStart.main(Native Method)

        Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Constructor.constructNative(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at android.view.LayoutInflater.createView(LayoutInflater.java:600)
                    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:702)
                    at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
                    at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
                    at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
                    at com.lexues.android.hari_prototype.controllers.fragments.MapFragment.onCreateView(MapFragment.java:87)
                    at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
                    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:938)
                    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1115)
                    at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
                    at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1478)
                    at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:478)
                    at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
                    at android.support.v4.view.ViewPager.populate(ViewPager.java:1068)
                    at android.support.v4.view.ViewPager.populate(ViewPager.java:914)
                    at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1436)
                    at android.view.View.measure(View.java:17396)
                    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
                    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
                    at android.view.View.measure(View.java:17396)
                    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
                    at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:382)
                    at android.view.View.measure(View.java:17396)
                    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
                    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
                    at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2505)
                    at android.view.View.measure(View.java:17396)
                    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2175)
                    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1316)
                    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1513)
                    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1200)
                    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6401)
                    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:803)
                    at android.view.Choreographer.doCallbacks(Choreographer.java:603)
                    at android.view.Choreographer.doFrame(Choreographer.java:573)
                    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:789)
                    at android.os.Handler.handleCallback(Handler.java:733)
                    at android.os.Handler.dispatchMessage(Handler.java:95)
                    at android.os.Looper.loop(Looper.java:157)
                    at android.app.ActivityThread.main(ActivityThread.java:5335)
                    at java.lang.reflect.Method.invokeNative(Native Method)
                    at java.lang.reflect.Method.invoke(Method.java:515)
                    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
                    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
                    at dalvik.system.NativeStart.main(Native Method)

        Caused by: android.view.InflateException: Binary XML file line #5: Error inflating class <unknown>
        at android.view.LayoutInflater.createView(LayoutInflater.java:626)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:702)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:470)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
        at com.lexues.android.hari_prototype.views.SmallRecor
        09-01 09:24:19.381     882-6350/? E/android.os.Debug﹕ !@Dumpstate > sdumpstate -k -t -z -d -o /data/log/dumpstate_app_error
        09-01 09:24:20.361      267-267/? E/SMD﹕ DCD ON

如我发布的代码中所述，在SmallRecordDetailsWidgetI inflate layout的构造函数中，定义小部件的xmlR.layout.small_record_details在哪里small_record_details.xml（而com.lexues.android.hari_prototype.views.SmallRecordDetailsWidget其根标签的名称则是）。

只是为了阐明我的目标-我想创建一个包含其他一些小部件。我希望在xml中为“复合窗口小部件”定义所有它们，然后在构造函数中获取对子窗口小部件的引用，以便客户端可以执行诸如SmallRecordDetailsWidget.titleTextWidget.setText(...)等操作。

呸

因此，在使用更好的关键字（用custom View代替extending ViewGroup）进行了更多挖掘之后，这篇文章对我有所帮助：http : //www.tiemenschut.com/how-to-create-compound-controls-for-android/

我的问题是我用作com.lexues.android.hari_prototype.views.SmallRecordDetailsWidget定义我的自定义窗口小部件的布局的根元素的名称。我应该简单地使用LinearLayout或根据需要使用任何其他布局。想到它是有道理的，否则我将在完成定义之前引用该元素。傻我

本文收集自互联网，转载请注明来源。

如有侵权，请联系[email protected] 删除。

编辑于
0

我来说两句

0条评论
登录后参与评论

相关文章

来自分类Dev

子类化的子类LinearLayout类

来自分类Dev

子类化LinearLayout，如何确定重力是LEFT还是RIGHT

来自分类Dev

子类化NSManagedObject的子类

来自分类Dev

子类化未来类

来自分类Dev

Python动态子类化

来自分类Dev

子类化按钮

来自分类Dev

子类化Avro记录？

来自分类Dev

子类化SKSpriteNode

来自分类Dev

如何子类化NSTextAttachment？

来自分类Dev

SKSpriteNode子类化Swift

来自分类Dev

子类化UIVisualEffectView的问题

来自分类Dev

子类化UIAlertController

来自分类Dev

如何子类化UIViewControllers？

来自分类Dev

子类化SCNNode

来自分类Dev

如何子类化SKScene

来自分类Dev

子类化UITableView

来自分类Dev

子类化按钮

来自分类Dev

子类化UIAlertController

来自分类Dev

子类化SCNNode

来自分类Dev

子类化UICollectionView

来自分类Dev

子类化PFUser

来自分类Dev

如何子类化UIView？

来自分类Dev

子类化未来类

来自分类Dev

子类化 UITableViewController 以在 Swift 中再次子类化

来自分类Dev

为QAudioDecoder子类化QIODevice

来自分类Dev

子类化numpy.ndarray

来自分类Dev

子类化UIButton并设置fontSize

来自分类Dev

子类化OpenerDirector的Pythonic方法

来自分类Dev

在Swift中子类化CIFilter

Related 相关文章

  1. 1

    子类化的子类LinearLayout类

  2. 2

    子类化LinearLayout，如何确定重力是LEFT还是RIGHT

  3. 3

    子类化NSManagedObject的子类

  4. 4

    子类化未来类

  5. 5

    Python动态子类化

  6. 6

    子类化按钮

  7. 7

    子类化Avro记录？

  8. 8

    子类化SKSpriteNode

  9. 9

    如何子类化NSTextAttachment？

  10. 10

    SKSpriteNode子类化Swift

  11. 11

    子类化UIVisualEffectView的问题

  12. 12

    子类化UIAlertController

  13. 13

    如何子类化UIViewControllers？

  14. 14

    子类化SCNNode

  15. 15

    如何子类化SKScene

  16. 16

    子类化UITableView

  17. 17

    子类化按钮

  18. 18

    子类化UIAlertController

  19. 19

    子类化SCNNode

  20. 20

    子类化UICollectionView

  21. 21

    子类化PFUser

  22. 22

    如何子类化UIView？

  23. 23

    子类化未来类

  24. 24

    子类化 UITableViewController 以在 Swift 中再次子类化

  25. 25

    为QAudioDecoder子类化QIODevice

  26. 26

    子类化numpy.ndarray

  27. 27

    子类化UIButton并设置fontSize

  28. 28

    子类化OpenerDirector的Pythonic方法

  29. 29

    在Swift中子类化CIFilter

热门标签

归档