安卓找不到处理意图MediaScanner的活动

<activity android:name=".MediaScannerActivity">
    <intent-filter>
        <action android:name="android.intent.action.MEDIA_SCANNER_SCAN_FILE" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>

import android.app.Activity;
import android.content.Intent;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Bundle;

public class MediaScannerActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // 获取传递的文件路径
        Intent intent = getIntent();
        Uri uri = intent.getData();
        String filePath = uri.getPath();

        // 使用MediaScannerConnection扫描并添加媒体文件
        MediaScannerConnection.scanFile(this, new String[]{filePath}, null, null);

        // 结束活动
        finish();
    }
}