Android：无法实例化活动ComponentInfo [英] Android: Unable to instantiate activity ComponentInfo

问题描述

我在android开发应用上有问题。我首先进行了研究，发现了我的错误，然后发现还有其他人也遇到与我相同的问题。我阅读了所有评论，尝试了所有内容，但仍然遇到相同的错误。

I have a problem on android developing app. I made a research first my error and i found out that there are other people who are having the same problem like me. I read all the comments a tried everything but still i'm having the same error.

这是我的错误

05-29 12:39:36.701: E/AndroidRuntime(823): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.georgepanayi.mixfmcyprus.radio/com.georgepanayi.mixfmcyprus.radio.Main_Activity}: java.lang.ClassNotFoundException: Didn't find class "com.georgepanayi.mixfmcyprus.radio.Main_Activity" on path: /data/app/com.georgepanayi.mixfmcyprus.radio-1.apk
05-29 12:39:36.701: E/AndroidRuntime(823):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
05-29 12:39:36.701: E/AndroidRuntime(823):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
05-29 12:39:36.701: E/AndroidRuntime(823):  at android.app.ActivityThread.access$600(ActivityThread.java:141)
05-29 12:39:36.701: E/AndroidRuntime(823):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
05-29 12:39:36.701: E/AndroidRuntime(823):  at android.os.Handler.dispatchMessage(Handler.java:99)
05-29 12:39:36.701: E/AndroidRuntime(823):  at android.os.Looper.loop(Looper.java:137)
05-29 12:39:36.701: E/AndroidRuntime(823):  at android.app.ActivityThread.main(ActivityThread.java:5041)
05-29 12:39:36.701: E/AndroidRuntime(823):  at java.lang.reflect.Method.invokeNative(Native Method)
05-29 12:39:36.701: E/AndroidRuntime(823):  at java.lang.reflect.Method.invoke(Method.java:511)
05-29 12:39:36.701: E/AndroidRuntime(823):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-29 12:39:36.701: E/AndroidRuntime(823):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-29 12:39:36.701: E/AndroidRuntime(823):  at dalvik.system.NativeStart.main(Native Method)
05-29 12:39:36.701: E/AndroidRuntime(823): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.georgepanayi.mixfmcyprus.radio.Main_Activity" on path: /data/app/com.georgepanayi.mixfmcyprus.radio-1.apk
05-29 12:39:36.701: E/AndroidRuntime(823):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
05-29 12:39:36.701: E/AndroidRuntime(823):  at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
05-29 12:39:36.701: E/AndroidRuntime(823):  at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
05-29 12:39:36.701: E/AndroidRuntime(823):  at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
05-29 12:39:36.701: E/AndroidRuntime(823):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
05-29 12:39:36.701: E/AndroidRuntime(823):  ... 11 more

我已阅读到清单上的活动存在问题，这是我的课程以及清单
的课程

I have read that the problem is with the activity on the manifest and here is my class and the manifest class

package com.georgepanayi.mixfmcyprus.radio;

import org.holoeverywhere.app.Activity;

import android.os.Bundle;

public class Main_Activity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_mix_fm__main);
    }

}

清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.georgepanayi.mixfmcyprus.radio"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/Theme.Mixfmradio" >
        <activity
            android:name=".Main_Activity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest>

我也在使用Holoeverywhere，SherlockActionBar 4.3.1和ViewPagerIndicator 2.4.1之类的库

Also I'm using libraries like Holoeverywhere, SherlockActionBar 4.3.1 and ViewPagerIndicator 2.4.1

有人可以找到问题吗？

can anyone find the problem?

谢谢

推荐答案

问题出在Holoeverywhere。为了解决该问题，我要做的是转到项目的属性-> Java构建路径->订单并导出，然后选择选项android私有库。然后我在清单中的标签内添加了android：name = org.holoeverywhere.app.Application。

The problem was with the Holoeverywhere. what I have done in order to solve the problem was to go to the properties of my project -> Java build path -> order and export and then select the option android private libraries. then i have added the android:name="org.holoeverywhere.app.Application" inside of the tag in the manifest.

这篇关于Android：无法实例化活动ComponentInfo的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！