错误的状态类别-预期Android 1.5中具有自定义视图的视图状态异常 [英] Wrong state class -- expecting View State exception in Android 1.5 with Custom View

问题描述

当我切换到横向模式时，以下自定义视图会在Android 1.5r3纸杯蛋糕中引发异常:

When I switch to landscape mode, the following custom view throws an exception in Android 1.5r3 cupcake:

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.opentable/com.opentable.activity.SearchResults}: 
    java.lang.IllegalArgumentException: Wrong state class -- expecting View State

我的代码:

public class TextProgressBar extends LinearLayout {
    public TextProgressBar(Context context, AttributeSet attrs) {
        super(context, attrs);
        ((LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.text_progress_bar, this, true);
        setGravity(Gravity.CENTER);
    }

    public TextProgressBar(Context context) {
        this(context,null);
    }
}

此视图的XML非常简单:

The XML for this view is fairly straightforward:

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

    <ProgressBar
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:indeterminate="true"
        android:id="@+id/progress" />

    <TextView
        android:text="Loading..."
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

有什么想法吗?

推荐答案

啊，如最初所说，该问题将很难诊断.

Ah, the problem would have been difficult to diagnose as originally stated.

事实证明，在我的自定义视图中，我的ProgressBar被命名为@+id/progress，但是当我在布局中使用自定义视图TextProgressBar时，我也将其称为TextProgressBar @+id/progress，从而导致两个具有相同ID的视图.

Turns out that inside my custom view my ProgressBar was named @+id/progress, but when I used the custom view TextProgressBar in my layout I also called the TextProgressBar @+id/progress, resulting in two views with the same id.

重命名其中一个解决了该问题.

Renaming one of them fixed the problem.

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