Question

我刚刚完成了我的第一个应用程序，虽然它适用于我的nexus 5（API 21），当我尝试在较旧的API中测试它时，它会在启动屏幕（实现按钮）后崩溃，我使用AppCompat库我的风格和清单设置得当。请查找我的XML文件的附加部分以及我的stacktrace。任何关于什么是有缺陷的嘘声或建议都非常感谢！非常感谢，提前！ PS.I试图删除按钮，它似乎工作。任何提示？

layout.xml

<Button
    android:id="@+id/finalize"
    android:layout_width="160dp"
    android:layout_height="50dp"
    android:background="@drawable/finalize_button"
    android:text="@string/finalize_workout"
    android:textColor="#FFFFFF"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:layout_marginBottom="40dp"
    android:visibility="gone"/>

<Button
    android:id="@+id/feedbackButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/myrect2"
    android:text="@string/feedback_button"
    android:textColor="@color/colorPrimaryDark"
    style="?android:attr/borderlessButtonStyle"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:layout_marginTop="56dp"
    android:layout_marginRight="26dp"
    android:textSize="12sp"/>

finalize_button.xml drawable

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape xmlns:android="http://schemas.android.com/apk/res/android"
           android:shape="rectangle">
        <solid android:color="@color/colorPrimary"/>
        <corners android:radius="6dp"/>
    </shape>
</item>
<item android:drawable="?android:selectableItemBackground"/>

堆栈跟踪

11-16 02:52:15.060    1844-1844/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.thanoschatz.quench/com.thanoschatz.quench.NewWorkoutActivity}: android.view.InflateException: Binary XML file line #53: Error inflating class android.widget.Button
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
        at android.app.ActivityThread.access$600(ActivityThread.java:130)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:4745)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
        at dalvik.system.NativeStart.main(Native Method)
 Caused by: android.view.InflateException: Binary XML file line #53: Error inflating class android.widget.Button

 Caused by: java.lang.reflect.InvocationTargetException

 Caused by: android.content.res.Resources$NotFoundException: File res/drawable/finalize_button.xml from drawable resource ID #0x7f02003b

 Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line #9: <item> tag requires a 'drawable' attribute or child tag defining a drawable

向后兼容性错误，膨胀class.widget.button

0 个答案: