Android 我不断收到错误致命异常。无法实例化活动
致命异常 E/AndroidRuntime535:java.lang.RuntimeException:无法实例化活动组件信息{com.This.Calculator/com.This.Calculator.BatteryCalculatorActivity}:java.lang.ClassNotFoundException:com.This.Calculator.ThisBatteryCalculatorActivity 我只是在学习Android开发者关于Tab View的教程,我想我是按照这个教程来学习的。。。但我似乎没有。有人能帮我吗? 顺便说一句,我正在使用eclipse 这是我的密码: 对于ThisBatteryCalculatorAndroid 我不断收到错误致命异常。无法实例化活动,android,Android,致命异常 E/AndroidRuntime535:java.lang.RuntimeException:无法实例化活动组件信息{com.This.Calculator/com.This.Calculator.BatteryCalculatorActivity}:java.lang.ClassNotFoundException:com.This.Calculator.ThisBatteryCalculatorActivity 我只是在学习Android开发者关于Tab View的教程,我想我是按照
package com.This.Calculator;
import android.app.TabActivity;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.widget.TabHost;
@SuppressWarnings("deprecation")
public class ThisBatteryCalculator extends TabActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Resources res = getResources(); // Resource object to get Durables
TabHost tabHost = getTabHost(); // The activity TabHost
TabHost.TabSpec spec; // Reusable TabSpec for each tab
Intent intent; // Reusable Intent for each tab
// Create an Intent to launch an Activity for the tab (to be reused)
intent = new Intent().setClass(this, ArtistsActivity.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("artists").setIndicator("Artists",
res.getDrawable(R.drawable.ic_tab_artists))
.setContent(intent);
tabHost.addTab(spec);
// Do the same for the other tabs
intent = new Intent().setClass(this, AlbumsActivity.class);
spec = tabHost.newTabSpec("albums").setIndicator("Albums",
res.getDrawable(R.drawable.ic_tab_albums))
.setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, SongActivity.class);
spec = tabHost.newTabSpec("songs").setIndicator("Songs",
res.getDrawable(R.drawable.ic_tab_songs))
.setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(2);
}
}
对于我的舱单:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.This.Calculator"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="15" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".ThisBatteryCalculatorActivity"
android:label="@string/app_name" >
android:theme="@android:style/Theme.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".ArtistsActivity"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar">
</activity>
<activity android:name=".SongActivity"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar">
</activity>
<activity android:name=".AlbumsActivity"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar">
</activity>
</application>
</manifest>
最后,对于my main.xml:
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp">
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp" />
</LinearLayout>
</TabHost>
任何帮助都将不胜感激!谢谢大家! 在清单中,您将ThisBatteryCalculator活动作为活动类的名称 在源代码中,您将ThisBatteryCalculator作为活动类的名称 此BatteryCalculator活动和此BatteryCalculator不相同。它们必须是一样的。你选择哪一个取决于你自己。将该类重命名为ThisBatteryCalculator活动或调整清单以引用ThisBatteryCalculator