PreferenceScreen发布活动

Question

我有一个活动，我想从首选项屏幕加载。我得到以下错误：

06-23 16:12:00.470: E/AndroidRuntime(3410): android.content.ActivityNotFoundException:    Unable to find explicit activity class {com.polygonattraction.app/com.polygonattraction.app.functions.GetImageActivity}; have you declared this activity in your AndroidManifest.xml?

我的首选项屏幕代码：

         <PreferenceScreen 
        android:title="Get faces"
        android:summary="Get the faces.">

        <intent 
            android:targetClass="com.polygonattraction.app.functions.GetImageActivity"
            android:targetPackage="com.polygonattraction.app" 
         />
    </PreferenceScreen>

我想加载的活动

public class GetImageActivity extends Activity 
{
public void onCreate()
{
    System.out.println("Started activity...");
            setContentView(R.layout.actilayout); //not done yet
}

}

这也是我的清单：

<uses-sdk android:minSdkVersion="7" />

<application 
    android:icon="@drawable/icon"
    android:label="@string/app_name"
    >

    <service
        android:label="@string/app_name"
        android:name=".LiveService"        
        android:permission="android.permission.BIND_WALLPAPER"
        >

        <intent-filter android:priority="1">
            <action android:name="android.service.wallpaper.WallpaperService" />
        </intent-filter>

        <meta-data android:name="android.service.wallpaper" android:resource="@xml/wallpaper" />
    </service>

    <activity
        android:label="settings"
        android:name="com.polygonattraction.app.functions.Settings"
        android:exported="true">
    </activity>

</application>

​

我不擅长Android XML，我习惯于触发器2d图形编程。为什么他们把它弄得这么乱？

Answer 1

在您的AndroidManifest文件中添加您的活动。

如下所示：

<activity android:name=".GetImageActivity"  />

希望这能有所帮助

Answer 2

您已经将该活动声明为com.polygonattraction.app.functions.Settings，而它的实际名称似乎是com.polygonattraction.app.functions.GetImageActivity。

尝试在清单中使用以下内容：

<activity
    android:label="settings"
    android:name="com.polygonattraction.app.functions.GetImageActivity"
    android:exported="true">
</activity>

而不是

<activity
    android:label="settings"
    android:name="com.polygonattraction.app.functions.Settings"
    android:exported="true">
</activity>

Answer 3

在manifest中也创建GetImageActivity条目，就像设置一样