异常 android.content.res.Resources$NotFoundException：从可绘制资源ID中找不到文件res/drawable/my.xml

Question

这个xml文件有什么问题，我试图获取按钮按下的感觉。但是我遇到了一个异常，我不太理解。 ResourceNotFound

在我的layout.xml文件中：

<Button
    android:id="@+id/submit"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/submitbuttonpress"
    android:text="Submit"
    android:textColor="#eeeee4"
    android:typeface="monospace" />

我在drawable文件夹中有一个submitbuttonpress.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="false" android:background="#AAAAAA" />
    <item android:state_pressed="true" android:background="#777777" />
</selector>

异常（logcat）

07-17 19:07:25.072: E/AndroidRuntime(2225): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.taxeeta/com.itaxeeta.BookingExperience}: android.view.InflateException: Binary XML file line #326: Error inflating class android.widget.Button
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.app.ActivityThread.access$1500(ActivityThread.java:117)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.os.Handler.dispatchMessage(Handler.java:99)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.os.Looper.loop(Looper.java:130)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.app.ActivityThread.main(ActivityThread.java:3687)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at java.lang.reflect.Method.invokeNative(Native Method)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at java.lang.reflect.Method.invoke(Method.java:507)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at dalvik.system.NativeStart.main(Native Method)
07-17 19:07:25.072: E/AndroidRuntime(2225): Caused by: android.view.InflateException: Binary XML file line #326: Error inflating class android.widget.Button
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.createView(LayoutInflater.java:518)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:626)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:626)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:626)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:626)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:626)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:216)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.app.Activity.setContentView(Activity.java:1660)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at com.itaxeeta.BookingExperience.onCreate(BookingExperience.java:100)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
07-17 19:07:25.072: E/AndroidRuntime(2225):     ... 11 more
07-17 19:07:25.072: E/AndroidRuntime(2225): Caused by: java.lang.reflect.InvocationTargetException
07-17 19:07:25.072: E/AndroidRuntime(2225):     at java.lang.reflect.Constructor.constructNative(Native Method)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.LayoutInflater.createView(LayoutInflater.java:505)
07-17 19:07:25.072: E/AndroidRuntime(2225):     ... 27 more
07-17 19:07:25.072: E/AndroidRuntime(2225): Caused by: android.content.res.Resources$NotFoundException: File res/drawable/nextprevbuttonpress.xml from drawable resource ID #0x7f02003e
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.content.res.Resources.loadDrawable(Resources.java:1697)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.view.View.<init>(View.java:1951)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.widget.TextView.<init>(TextView.java:389)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.widget.Button.<init>(Button.java:108)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.widget.Button.<init>(Button.java:104)
07-17 19:07:25.072: E/AndroidRuntime(2225):     ... 30 more
07-17 19:07:25.072: E/AndroidRuntime(2225): Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line #3: <item> tag requires a 'drawable' attribute or child tag defining a drawable
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.graphics.drawable.StateListDrawable.inflate(StateListDrawable.java:167)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:787)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.graphics.drawable.Drawable.createFromXml(Drawable.java:728)
07-17 19:07:25.072: E/AndroidRuntime(2225):     at android.content.res.Resources.loadDrawable(Resources.java:1694)
07-17 19:07:25.072: E/AndroidRuntime(2225):     ... 35 more

- taxeeta

---

你不能像那样将一个原始颜色字符串粘贴到你的<item>中。你需要为每个状态创建形状可绘制对象，并在选择器中使用android:drawable引用它们。在这里检查<item>的有效属性：http://developer.android.com/guide/topics/resources/drawable-resource.html#StateList - Ken Wolf

谢谢，是的，它也在异常中，不知道为什么我错过了它。 - taxeeta

Answer 1

试一试

在选择器状态下，需要添加可绘制对象。在您的情况下，您想在选择器状态中添加颜色。因此，可以使用资源中的颜色创建可绘制对象。它将作为 ColorDrawable 起作用。

请检查下面的代码

<selector xmlns:android="http://schemas.android.com/apk/res/android">

        <item android:drawable="@drawable/clr_normal" android:state_pressed="false"/>
        <item android:drawable="@drawable/clr_pressed" android:state_pressed="true"/>

    </selector>

用于颜色的values/string.xml

 <drawable name="clr_normal">#AAAAAA</drawable>
<drawable name="clr_pressed">#777777</drawable>

- user1140237

---

太晚才来参加，我在 ShapeDrawable 中使用了位图，后来我用项的 drawable 属性替换了它。这解决了我的问题，顺便说一下，我本来有矢量可绘制对象。 - Murtaza Khursheed Hussain

Answer 2

属性android:background不存在。正确的方法是首先创建一个名为res/colors.xml的新资源文件，其内容如下：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="lt_gray">#AAAAAA</color>
    <color name="dk_gray">#777777</color>
</resources>

然后只需将您的 选择器 更改为以下内容：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="false" android:drawable="@color/lt_gray" />
    <item android:state_pressed="true" android:drawable="@color/dk_gray" />
</selector>

这将自动创建一个ColorDrawable并将其分配为该状态的可绘制对象。

- Phil

---

实际上，如果您将十六进制颜色值传递给 android:drawable，则此方法无法正常工作。相反，您应该在 style.xml 或 strings.xml 中创建一个 color 属性，然后像下面这样将颜色名称传递给 android:drawable: android:drawable="@color/bg_color"。 - Mehdiway

我收到一个“应定义颜色属性”的Lint错误。 - frankelot