时间戳

首页 > 解决方案 > 我有一个 custom_list_view 的问题。错误就在那一行 setContentView(R.layout.activity_main);

android - 我有一个 custom_list_view 的问题。错误就在那一行 setContentView(R.layout.activity_main);

问题描述

2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.os.Looper.loop() (Looper.java:166)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:7555)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run() (RuntimeInit.java:469)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:963)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64: Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.View$OnUnhandledKeyEventListener" on path: DexPathList[[zip file "/data/app/com.ahmadraza.firstclass-9SuXVOmOZn38bdZOUd4YXw==/base.apk"],nativeLibraryDirectories=[/data/app/com.ahmadraza.firstclass-9SuXVOmOZn38bdZOUd4YXw==/lib/arm64, /system/lib64, /vendor/lib64, /product/lib64]]
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:125)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.support.v4.view.ViewCompat.setBackground(android.view.View, android.graphics.drawable.Drawable) (ViewCompat.java:2341)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.support.v7.widget.ActionBarContainer.<init>(android.content.Context, android.util.AttributeSet) (ActionBarContainer.java:62)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at java.lang.Object java.lang.reflect.Constructor.newInstance0(java.lang.Object[]) (Constructor.java:-2)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at java.lang.Object java.lang.reflect.Constructor.newInstance(java.lang.Object[]) (Constructor.java:334)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at android.view.View android.view.LayoutInflater.createView(java.lang.String, java.lang.String, android.util.AttributeSet) (LayoutInflater.java:658)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:801)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet) (LayoutInflater.java:741)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.view.LayoutInflater.rInflate(org.xmlpull.v1.XmlPullParser, android.view.View, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:874)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.view.LayoutInflater.rInflateChildren(org.xmlpull.v1.XmlPullParser, android.view.View, android.util.AttributeSet, boolean) (LayoutInflater.java:835)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at android.view.View android.view.LayoutInflater.inflate(org.xmlpull.v1.XmlPullParser, android.view.ViewGroup, boolean) (LayoutInflater.java:515)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup, boolean) (LayoutInflater.java:423)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup) (LayoutInflater.java:374)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at android.view.ViewGroup android.support.v7.app.AppCompatDelegateImpl.createSubDecor() (AppCompatDelegateImpl.java:607)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.support.v7.app.AppCompatDelegateImpl.ensureSubDecor() (AppCompatDelegateImpl.java:518)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.support.v7.app.AppCompatDelegateImpl.setContentView(int) (AppCompatDelegateImpl.java:466)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.support.v7.app.AppCompatActivity.setContentView(int) (AppCompatActivity.java:140)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void com.ahmadraza.firstclass.MainActivity.onCreate(android.os.Bundle) (MainActivity.java:22)
2019-07-24 23:25:56.172 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.app.Activity.performCreate(android.os.Bundle, android.os.PersistableBundle) (Activity.java:7343)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.app.Activity.performCreate(android.os.Bundle) (Activity.java:7333)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.app.Instrumentation.callActivityOnCreate(android.app.Activity, android.os.Bundle) (Instrumentation.java:1219)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:3271)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3429)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.app.ActivityThread.-wrap12(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:2009)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:109)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.os.Looper.loop() (Looper.java:166)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:7555)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run() (RuntimeInit.java:469)
2019-07-24 23:25:56.173 32051-32051/com.ahmadraza.firstclass I/zygote64:     at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:963)
2019-07-24 23:25:56.240 32051-32051/com.ahmadraza.firstclass D/HwGalleryCacheManagerImpl: mIsEffect:false

标签： androidcustom-controlsandroid-custom-viewlistactivity

解决方案

问题是 android.support.v4.view.ViewCompat 没有在新的 androidx 包结构中实现 View.OnUnhandledKeyEventListener 并且仅在支持 lib 结构中的 API 28 开始实现它（至少在版本 28.0.0 中）。因此，警告出现在 API <28 的设备上，而不出现在那些 >=28 的设备上。

这是来自支持包结构的 ViewCompat.class 类中的相关代码：##

@RequiresApi(28) 私有静态类 OnUnhandledKeyEventListenerWrapper 实现 OnUnhandledKeyEventListener { private ViewCompat.OnUnhandledKeyEventListenerCompat mCompatListener;

OnUnhandledKeyEventListenerWrapper(ViewCompat.OnUnhandledKeyEventListenerCompat listener) {
    this.mCompatListener = listener;
}

public boolean onUnhandledKeyEvent(View v, KeyEvent event) {
    return this.mCompatListener.onUnhandledKeyEvent(v, event);
}

} ##

推荐阅读