android ArrayAdapter要求资源ID为spinner中的TextView

时间：2015-04-27 10:00:48

标签： java android xml android-arrayadapter

我不知道发生了什么，但是当我在手机上测试运行我的应用程序时，我仍然会收到此错误。 

java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView
        at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:386)
        at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
        at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:197)
        at android.widget.Spinner.onMeasure(Spinner.java:507)
        at android.view.View.measure(View.java:17448)
        at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:727)
        at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:463)
        at android.view.View.measure(View.java:17448)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
        at android.view.View.measure(View.java:17448)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)
        at android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:453)
        at android.view.View.measure(View.java:17448)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
        at android.view.View.measure(View.java:17448)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)
        at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
        at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
        at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
        at android.view.View.measure(View.java:17448)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
        at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2560)
        at android.view.View.measure(View.java:17448)
        at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2031)
        at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1189)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1402)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1077)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5884)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
        at android.view.Choreographer.doCallbacks(Choreographer.java:580)
        at android.view.Choreographer.doFrame(Choreographer.java:550)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5312)
        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:901)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:696)
 Caused by: java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.TextView
        at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:379)
            at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
            at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:197)
            at android.widget.Spinner.onMeasure(Spinner.java:507)
            at android.view.View.measure(View.java:17448)
            at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:727)
            at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:463)
            at android.view.View.measure(View.java:17448)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)
            at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
            at android.view.View.measure(View.java:17448)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)
            at android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:453)
            at android.view.View.measure(View.java:17448)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)
            at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
            at android.view.View.measure(View.java:17448)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)
            at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
            at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
            at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
            at android.view.View.measure(View.java:17448)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5465)
            at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
            at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2560)
            at android.view.View.measure(View.java:17448)
            at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2031)
            at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1189)
            at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1402)
            at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1077)
            at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5884)
            at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
            at android.view.Choreographer.doCallbacks(Choreographer.java:580)
            at android.view.Choreographer.doFrame(Choreographer.java:550)
            at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5312)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)

我尝试了很多选项，包括为我的微调器arraylist创建一个baseAdapter，但似乎没有任何效果。这是我的自定义arrayadapter，我认为是问题，但我不知道：

public class SpinnerArrayAdapter extends ArrayAdapter<ContactsData> {
...
public View getCustomView(int position, ViewGroup parent, View convertView){

    View row = convertView;
    ContactsHolder holder = null;

    if(row == null){
        LayoutInflater inflater = ((Activity)context).getLayoutInflater();
        row = inflater.inflate(R.layout.row, parent, false);

        holder = new ContactsHolder();

        holder.name = (TextView)row.findViewById(R.id.contactName);
        holder.number = (TextView)row.findViewById(R.id.contactPhone);

        row.setTag(holder);
    }else{
        holder = (ContactsHolder)row.getTag();
    }

    ContactsData contactsData = data.get(position);

    holder.name.setText(contactsData.name);
    holder.number.setText(contactsData.number);
    return row;
}

static class ContactsHolder{
    TextView name;
    TextView number;
}

这是我的布局row.xml文件：

   <?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content">

    <TextView
        android:id="@+id/contactName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/contactPhone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

提前致谢。

在mainactivity.java中初始化arrayadapter 

ArrayList<ContactsData> contacts_data = new ArrayList<>();

    contacts_data.add(new ContactsData("lol", "2"));

    SpinnerArrayAdapter mAdapter = new SpinnerArrayAdapter(MainActivity.this, R.layout.row, contacts_data);

    mAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    mySpinner.setAdapter(mAdapter);

2 个答案:

答案 0 :(得分：1)

您需要添加您想要使用的TextView的ID

E.g。

SpinnerArrayAdapter mAdapter = new SpinnerArrayAdapter(MainActivity.this, R.layout.row, R.id. contactName, contacts_data);

当然

public class SpinnerArrayAdapter extends ArrayAdapter<ContactsData> {
   public SpinnerArrayAdapter(Context c, int layoutId, int textViewId, ArrayList<ContactsData> data) {
        super(c, layoutId, textViewId, data);
        // other stuff
  } 
}

这只是超类的解决方法，因为您正在处理getView

中的可视化

答案 1 :(得分：0)

您的布局文件应该只包含一个textview，并且不能在任何布局下包装，如下面的

<?xml version="1.0" encoding="utf-8"?>
        <TextView xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" 
        // other attributes of the TextView
        />

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