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3 일 동안 사용자 지정보기를 만들려고했습니다. 모든 튜토리얼을 따라 왔지만 "ClassNotFoundException"오류가 계속 발생합니다. 조이스틱을 만들고 싶지만이 질문을 단순화하기 위해 나는 Button을 확장하여 사용하려고 노력했습니다. 성공하지 못했습니다.Android 애플리케이션에서 맞춤보기를 만드는 방법은 무엇입니까?
MainActivity.java :
package com.stefan.example;
import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.AttributeSet;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
public class CustomButton extends Button
{
public CustomButton(Context context) {
super(context);
}
public CustomButton(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CustomButton(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
acitivity_main.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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.stefan.example.MainActivity">
<com.stefan.example.MainActivity.CustomButton
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
그것은 전혀 컴파일에 불평하지 않지만, 내가 응용 프로그램을 시작하자마자, 그것은이 오류와 함께 충돌 :
10-14 17:31:58.476 15869-15869/com.stefan.example E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.stefan.example, PID: 15869
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.stefan.example/com.stefan.example.MainActivity}: android.view.InflateException: Binary XML file line #12: Error inflating class com.stefan.example.MainActivity.CustomButton
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2306)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2366)
at android.app.ActivityThread.access$800(ActivityThread.java:149)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1284)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5297)
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:908)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)
Caused by: android.view.InflateException: Binary XML file line #12: Error inflating class com.stefan.example.MainActivity.CustomButton
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:757)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.stefan.example.MainActivity.onCreate(MainActivity.java:30)
at android.app.Activity.performCreate(Activity.java:6020)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2259)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2366)
at android.app.ActivityThread.access$800(ActivityThread.java:149)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1284)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5297)
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:908)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.stefan.example.MainActivity.CustomButton" on path: DexPathList[[zip file "/data/app/com.stefan.example-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
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:571)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.stefan.example.MainActivity.onCreate(MainActivity.java:30)
at android.app.Activity.performCreate(Activity.java:6020)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2259)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2366)
at android.app.ActivityThread.access$800(ActivityThread.java:149)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1284)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5297)
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:908)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)
Suppressed: java.lang.ClassNotFoundException: Didn't find class "com.stefan.example.MainActivity.CustomButton" on path: DexPathList[[dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-support-annotations-24.1.1_6ce5cf7d8fc68e278012c1fdb63847d6984b1a82-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-slice_9-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-slice_8-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-slice_7-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-slice_6-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-slice_5-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-slice_4-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-slice_3-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-slice_2-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-slice_1-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-slice_0-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-internal_impl-24.1.1_d7334ac7335287759c12e17e515a73749d4ea418-classes.dex", dex file "/data/data/com.stefan.example/files/instant-run/dex/slice-com.android.support-support-vector-drawable-24.1.1_e21575ccf9da39363d36f579d76036b9825e0829-classes.dex
<Button
class = "com.stefan.example.MainActivity.CustomButton"
android:layout_width="match_parent"
android:layout_height="match_parent" />
그것은 실행되지만보기는 일반 버튼처럼 동작하고 내 클래스가 사용되지 않는 :나는 XML 파일을 변경 시도했습니다.
다른 기기에서 앱을 사용해 보았습니다. 모두 동일한 예외를 제공합니다.
내가 뭔가를 잊어 버리십니까? 나는 단순한 실수를하기를 바란다. 미리 감사드립니다.
이 문제와 유사한 것 같습니다. dex 파일에 문제가 있습니다. http://stackoverflow.com/questions/10866431/android-activity-classnotfoundexception-tried-every – alan7678