执行Android项目“活动类不存在”时出错.

概述我已经在Eclipse中创建了示例android项目,但在执行命令时却遇到错误：活动类{com.example.best/com.example.best.MainActivity}不存在.但是项目中存在MainActivity类packagecom.example.best;importandroid.os.Bundle;importandroid.app.Activity;importandroid.view.Men

我已经在Eclipse中创建了示例androID项目,但在执行命令时却遇到错误：活动类{com.example.best/com.example.best.MainActivity}不存在.

但是项目中存在MainActivity类

package com.example.best;import androID.os.Bundle;import androID.app.Activity;import androID.vIEw.Menu;public class MainActivity extends Activity {    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_main);    }    @OverrIDe    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);        return true;    }}

以下是控制台上打印的错误消息

[2015-03-01 22:01:58 - best] Starting activity com.example.best.MainActivity on device EAAZCY30C637[2015-03-01 22:01:59 - best] New package not yet registered with the system. Waiting 3 seconds before next attempt.[2015-03-01 22:02:02 - best] Starting activity com.example.best.MainActivity on device EAAZCY30C637[2015-03-01 22:02:02 - best] New package not yet registered with the system. Waiting 3 seconds before next attempt.[2015-03-01 22:02:05 - best] Starting activity com.example.best.MainActivity on device EAAZCY30C637[2015-03-01 22:02:05 - best] New package not yet registered with the system. Waiting 3 seconds before next attempt.[2015-03-01 22:02:08 - best] Starting activity com.example.best.MainActivity on device EAAZCY30C637[2015-03-01 22:02:08 - best] New package not yet registered with the system. Waiting 3 seconds before next attempt.[2015-03-01 22:02:11 - best] Starting activity com.example.best.MainActivity on device EAAZCY30C637[2015-03-01 22:02:12 - best] ActivityManager: Starting: Intent { act=androID.intent.action.MAIN cat=[androID.intent.category.LAUNCHER] cmp=com.example.best/.MainActivity }[2015-03-01 22:02:12 - best] ActivityManager: Error type 3[2015-03-01 22:02:12 - best] ActivityManager: Error: Activity class {com.example.best/com.example.best.MainActivity} does not exist.

这是我的清单文件的内容

<?xml version="1.0" enCoding="utf-8"?><manifest xmlns:androID="http://schemas.androID.com/apk/res/androID"    package="com.example.best"    androID:versionCode="1"    androID:versionname="1.0" >    <uses-sdk        androID:minSdkVersion="8"        androID:targetSdkVersion="18" />    <application        androID:allowBackup="true"        androID:icon="@drawable/ic_launcher"        androID:label="@string/app_name"        androID:theme="@style/Apptheme" >        <activity            androID:name="com.example.best.MainActivity"            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>

我应该怎么做才能解决这个问题

解决方法:

您的样本中没有错误.我已经在我的机器上对其进行了测试,并且工作正常.

请尝试以下步骤.
项目->清洁

如果不起作用,请尝试创建新的工作区.

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