src/com/cooliris/cache/BootReceiver.java

package com.cooliris.cache;

import com.cooliris.media.LocalDataSource;
import com.cooliris.media.SingleDataSource;

import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.provider.MediaStore.Images;
import android.provider.MediaStore.Video;
import android.util.Log;

public class BootReceiver extends BroadcastReceiver {
    private static final String TAG = "BootReceiver";
    private final Handler mHandler = new Handler();

    @Override
    public void onReceive(final Context context, Intent intent) {
        final String action = intent.getAction();
        Log.i(TAG, "Got intent with action " + action);
        if (Intent.ACTION_MEDIA_SCANNER_FINISHED.equals(action)) {
            CacheService.markDirty(context);
            CacheService.startCache(context, true);
        } else if (Intent.ACTION_MEDIA_MOUNTED.equals(action)) {
            // Do nothing, wait for the mediascanner to be done after mounting.
            ;
        } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE)) {
            final Uri fileUri = intent.getData();
            final long bucketId = SingleDataSource.parseBucketIdFromFileUri(fileUri.toString());
            if (!CacheService.isPresentInCache(bucketId)) {
                CacheService.markDirty(context);
            }
        } else if (action.equals(Intent.ACTION_BOOT_COMPLETED)) {
            // We add special listeners for the MediaProvider
            final Handler handler = mHandler;
            final ContentObserver localObserver = new ContentObserver(handler) {
                public void onChange(boolean selfChange) {
                    if (!LocalDataSource.sObserverActive) {
                    	CacheService.senseDirty(context, null);
                    }
                }
            };
            // Start listening perpetually.
            Uri uriImages = Images.Media.EXTERNAL_CONTENT_URI;
            Uri uriVideos = Video.Media.EXTERNAL_CONTENT_URI;
            ContentResolver cr = context.getContentResolver();
            cr.registerContentObserver(uriImages, false, localObserver);
            cr.registerContentObserver(uriVideos, false, localObserver);
        }
    }
}