使用支持库中的GridLayout导致'NoSuchMethodError:android.support.v4.view.ViewCompat.getLayoutDirection'

Question

我在我的应用程序中使用GridLayout,它运行得很好.现在我也必须支持android 3.xx,所以我加入了android-support-library-v7.我刚刚在所有地方更改了GridLayout和LayoutParams的import语句.我现在可以构建项目,但是当我运行应用程序时,它会因NoSuchMethodError异常而崩溃.

我按照这些步骤来包含支持库

这是堆栈跟踪:

    03-27 13:37:13.454: E/AndroidRuntime(23016): FATAL EXCEPTION: main
03-27 13:37:13.454: E/AndroidRuntime(23016): java.lang.NoSuchMethodError: android.support.v4.view.ViewCompat.getLayoutDirection
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.support.v7.widget.GridLayout.isLayoutRtlCompat(GridLayout.java:675)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.support.v7.widget.GridLayout.getDefaultMargin(GridLayout.java:660)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.support.v7.widget.GridLayout.getMargin1(GridLayout.java:671)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.support.v7.widget.GridLayout$Axis.computeMargins(GridLayout.java:1547)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.support.v7.widget.GridLayout$Axis.getLeadingMargins(GridLayout.java:1558)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.support.v7.widget.GridLayout.getMargin(GridLayout.java:683)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.support.v7.widget.GridLayout.getTotalMargin(GridLayout.java:692)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.support.v7.widget.GridLayout.measureChildWithMargins2(GridLayout.java:897)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.support.v7.widget.GridLayout.measureChildrenWithMargins(GridLayout.java:911)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.support.v7.widget.GridLayout.onMeasure(GridLayout.java:950)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.measure(View.java:15848)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1052)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.onMeasure(LinearLayout.java:590)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.measure(View.java:15848)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.HorizontalScrollView.measureChildWithMargins(HorizontalScrollView.java:1229)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.HorizontalScrollView.onMeasure(HorizontalScrollView.java:301)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.measure(View.java:15848)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.measure(View.java:15848)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.measure(View.java:15848)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5008)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.measure(View.java:15848)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.ListView.setupChild(ListView.java:1918)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.ListView.makeAndAddView(ListView.java:1843)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.ListView.fillDown(ListView.java:675)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.ListView.fillSpecific(ListView.java:1333)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.ListView.layoutChildren(ListView.java:1633)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.AbsListView.onLayout(AbsListView.java:2012)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.layout(View.java:14289)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewGroup.layout(ViewGroup.java:4559)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1076)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.layout(View.java:14289)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewGroup.layout(ViewGroup.java:4559)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1076)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.layout(View.java:14289)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewGroup.layout(ViewGroup.java:4559)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.layout(View.java:14289)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewGroup.layout(ViewGroup.java:4559)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.layout(View.java:14289)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewGroup.layout(ViewGroup.java:4559)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.View.layout(View.java:14289)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewGroup.layout(ViewGroup.java:4559)
03-27 13:37:13.454: E/AndroidRuntime(23016):    at android.view.ViewRootImpl.perfor

编辑:代码

public class TableRenderingView extends GridLayout{

    private Context mContext;


    public TableRenderingView(Context context){
        super(context);
        mContext = context; 
        setUseDefaultMargins(true);
        setAlignmentMode(ALIGN_BOUNDS);
        setRowOrderPreserved(false);        
    }
...

}

当我尝试在LinearLayout中动态添加此扩展类时发生异常

TableRenderingView trv = new TableRenderingView(context);
                View v = trv.populate(gridRowData);
                LinearLayout ll = ((LinearLayout) tableContainerView.getChildAt(0));
                ll.removeAllViews();
                ll.addView(v);

Answer 1

所以这发生了,因为我的项目所指的android-support-v4库比最新版本更旧.由于我们必须手动将android-support-v4.jar库复制到我们项目的/ libs文件夹中,无论你更新sdk多少次,它都会产生很小的影响,直到我们手动覆盖项目文件夹中的支持库.jar .

哪里出错了？我的印象是我的项目目录中有最新的android-support-v4.jar.由于我所有尝试通过更改构建路径和顺序来解决此问题都失败了,作为最后的手段我在/ extras/android/support/v4/android中覆盖了项目/ libs中的android-support-v4.jar - 支持 - v4.jar.瞧它开始工作了.

这就是我将support-v7 gridlayout添加到我的项目中的方式

1. 将'gridlayout'文件夹从'\ extras\android\support\v7'复制到Android项目所在的位置
2. 将步骤1中复制的库作为android-library导入工作空间
3. 在android应用程序中引用step2中导入的库

注意:

1. 完成上述步骤后,检查'android-support-v7-gridlayour.jar'是否包含在Android应用程序项目下的"Android Dependencies"下.

2. 检查Android应用程序的'project.properties'中为'gridlayout'项目添加的新行.在我的情况下,添加了以下行

    android.library.reference.1=../gridlayout
   

3. 除了上面提到的步骤,我没有按照这里提到的任何其他步骤