自定义查看充气错误
我有一个简单的自定义视图：
public class ScrollDisabledViewPager extends ViewPager {
public ScrollDisabledViewPager(Context context) {
super(context);
}
public ScrollDisabledViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
return false;
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
return false;
}
}
当我将此View放入我的XML布局时，它不会膨胀：
XML：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="com.lol.firebase.ui.SignUpActivity">
<com.lol.firebase.ui.SignUpActivity.ScrollDisabledViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.TabLayout
android:id="@+id/tab_dots"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
app:tabGravity="center"
app:tabIndicatorHeight="0dp"
app:tabBackground="@drawable/tab_indicator_selector" />
<Button
android:id="@+id/btn_back"
android:text="@string/back"
android:textColor="@color/colorPrimaryLight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:drawableLeft="@drawable/ic_back"
style="@style/Widget.AppCompat.Button.Borderless"
android:visibility="gone" />
<Button
android:id="@+id/btn_next_or_finish"
android:text="@string/next"
android:textColor="@color/colorPrimaryLight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:drawableRight="@drawable/ic_next"
style="@style/Base.Widget.AppCompat.Button.Borderless" />
</RelativeLayout>
Stacktrace：
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.lol.firebase/com.lol.firebase.ui.SignUpActivity}: android.view.InflateException: Binary XML file line #9: Error inflating class com.lol.firebase.ui.SignUpActivity.ScrollDisabledViewPager
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2660)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2730)
at android.app.ActivityThread.access$800(ActivityThread.java:185)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5847)
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:1010)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class com.lol.firebase.ui.SignUpActivity.ScrollDisabledViewPager
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:812)
at android.view.LayoutInflater.inflate(LayoutInflater.java:510)
at android.view.LayoutInflater.inflate(LayoutInflater.java:420)
at android.view.LayoutInflater.inflate(LayoutInflater.java:371)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:292)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.lol.firebase.ui.SignUpActivity.onCreate(SignUpActivity.java:29)
at android.app.Activity.performCreate(Activity.java:6117)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2613)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2730)
at android.app.ActivityThread.access$800(ActivityThread.java:185)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5847)
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:1010)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.lol.firebase.ui.SignUpActivity.ScrollDisabledViewPager" on path: DexPathList[[zip file "/data/app/com.lol.firebase-1/base.apk", zip file "/data/app/com.lol.firebase-1/split_lib_dependencies_apk.apk", zip file "/data/app/com.lol.firebase-1/split_lib_slice_0_apk.apk", zip file "/data/app/com.lol.firebase-1/split_lib_slice_1_apk.apk", zip file "/data/app/com.lol.firebase-1/split_lib_slice_2_apk.apk", zip file "/data/app/com.lol.firebase-1/split_lib_slice_3_apk.apk", zip file "/data/app/com.lol.firebase-1/split_lib_slice_4_apk.apk", zip file "/data/app/com.lol.firebase-1/split_lib_slice_5_apk.apk", zip file "/data/app/com.lol.firebase-1/split_lib_slice_6_apk.apk", zip file "/data/app/com.lol.firebase-1/split_lib_slice_7_apk.apk", zip file "/data/app/com.lol.firebase-1/split_lib_slice_8_apk.apk", zip file "/data/app/com.lol.firebase-1/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.lol.firebase-1/lib/arm64, /vendor/lib64, /system/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at android.view.LayoutInflater.createView(LayoutInflater.java:577)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:749)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:812)
at android.view.LayoutInflater.inflate(LayoutInflater.java:510)
at android.view.LayoutInflater.inflate(LayoutInflater.java:420)
at android.view.LayoutInflater.inflate(LayoutInflater.java:371)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:292)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.lol.firebase.ui.SignUpActivity.onCreate(SignUpActivity.java:29)
at android.app.Activity.performCreate(Activity.java:6117)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2613)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2730)
at android.app.ActivityThread.access$800(ActivityThread.java:185)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5847)
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:1010)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
Suppressed: java.lang.ClassNotFoundException: com.lol.firebase.ui.SignUpActivity.ScrollDisabledViewPager
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 23 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
Stacktrace显示了一个ClassNotFound异常，但我不明白为什么：该类是公共的，我有两个构造函数。
2 个答案:
答案 0 :(得分：0)
这里是相关性错误消息：
java.lang.ClassNotFoundException: Didn't find class "com.lol.firebase.ui.SignUpActivity.ScrollDisabledViewPager"
请确保课程ScrollDisabledViewPager位于包com.lol.firebase.ui.SignUpActivity
但是，我猜你的课程在com.lol.firebase.ui而不是com.lol.firebase.ui.SignUpActivity，如果我的猜测正确，你应该在xml布局中定义com.lol.firebase.ui.ScrollDisabledViewPager
...other xml layout
<com.lol.firebase.ui.ScrollDisabledViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
...other xml layout
答案 1 :(得分：0)
基于public class ScrollDisabledViewPager，我猜测这不是SignUpActivity.java的嵌套类
但是你的错误似乎是指它为一个。
com.lol.firebase.ui.SignUpActivity.ScrollDisabledViewPager
您可以尝试将类移到com.lol.firebase.ui包中，如果没有，但XML必须与package + "." + className匹配
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