致命异常 E/AndroidRuntime(535):java.lang.RuntimeException:无法实例化活动 ComponentInfo{com.This.Calculator/com.This.Calculator.BatteryCalculatorActivity}:java.lang.ClassNotFoundException:com.This.Calculator.ThisBatteryCalculatorActivity
我只是在关注 Android Developers for Tab View 的教程,我想我已经遵循了这个词......但似乎我没有。有人可以帮帮我吗?我正在使用日食顺便说一句。
这是我的代码:
对于 ThisBatteryCalculator
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);
}
}
对于我的清单:
<?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>
最后是我的 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>
任何帮助将不胜感激!谢谢!