Java MapUtils.openDiskCache方法代码示例

import com.google.samples.apps.iosched.util.MapUtils; //导入方法依赖的package包/类
@Override
public List<TileEntry> loadInBackground() {
    List<TileEntry> list = null;
    // Create a URI to get a cursor for all map tile entries.
    final Uri uri = ScheduleContract.MapTiles.buildUri();
    Cursor cursor = getContext().getContentResolver().query(uri,
            OverlayQuery.PROJECTION, null, null, null);

    if (cursor != null) {
        // Create a TileProvider for each entry in the cursor
        final int count = cursor.getCount();

        // Initialise the tile cache that is reused for all TileProviders.
        // Note that the cache *MUST* be closed when the encapsulating Fragment is stopped.
        DiskLruCache tileCache = MapUtils.openDiskCache(getContext());

        list = new ArrayList<>(count);
        cursor.moveToFirst();
        while (!cursor.isAfterLast()) {
            final int floor = cursor.getInt(OverlayQuery.TILE_FLOOR);
            final String file = cursor.getString(OverlayQuery.TILE_FILE);

            File f = MapUtils.getTileFile(getContext().getApplicationContext(), file);
            if (f == null || !f.exists()) {
                // Skip the file if it is invalid or does not exist.
                break;
            }

            CachedTileProvider provider;
            try {
                SVGTileProvider svgProvider = new SVGTileProvider(f, mDPI);
                // Wrap the SVGTileProvider in a CachedTileProvider for caching on disk.
                provider = new CachedTileProvider(Integer.toString(floor), svgProvider,
                        tileCache);
            } catch (IOException e) {
                LOGD(TAG, "Could not create Tile Provider.");
                break;
            }
            list.add(new TileEntry(floor, provider));
            cursor.moveToNext();
        }

        cursor.close();
    }

    return list;
}
 

import com.google.samples.apps.iosched.util.MapUtils; //导入方法依赖的package包/类
@Override
public void onStart() {
    super.onStart();
    // Open tile disk cache
    mTileCache = MapUtils.openDiskCache(getActivity());
}
 

import com.google.samples.apps.iosched.util.MapUtils; //导入方法依赖的package包/类
@Override
public List<TileEntry> loadInBackground() {
    List<TileEntry> list;

    // Create a TileProvider for each entry in the cursor
    final int count = floorTileFileMapping.size();

    // Initialise the tile cache that is reused for all TileProviders.
    // Note that the cache *MUST* be closed when the encapsulating Fragment is stopped.
    DiskLruCache tileCache = MapUtils.openDiskCache(getContext());

    list = new ArrayList<>(count);

    for (Map.Entry<Integer, String> entry : floorTileFileMapping.entrySet()) {
        final int floor = entry.getKey();
        final String file = entry.getValue();

        File f = MapUtils.getTileFile(getContext().getApplicationContext(), file);
        if (f == null || !f.exists()) {
            if (MapUtils.hasTileAsset(getContext(), file)) {
                MapUtils.copyTileAsset(getContext(), file);
            } else {
                break;
            }
        }

        CachedTileProvider provider;
        try {
            SVGTileProvider svgProvider = new SVGTileProvider(f, mDPI);
            // Wrap the SVGTileProvider in a CachedTileProvider for caching on disk.
            provider = new CachedTileProvider(Integer.toString(floor), svgProvider,
                    tileCache);
        } catch (IOException e) {
            LOGD(TAG, "Could not create Tile Provider.");
            break;
        }
        list.add(new TileEntry(floor, provider));
    }


    return list;
}
 

import com.google.samples.apps.iosched.util.MapUtils; //导入方法依赖的package包/类
@Override
public List<TileEntry> loadInBackground() {
    List<TileEntry> list = null;
    // Create a URI to get a cursor for all map tile entries.
    final Uri uri = ScheduleContract.MapTiles.buildUri();
    Cursor cursor = getContext().getContentResolver().query(uri,
            OverlayQuery.PROJECTION, null, null, null);

    if (cursor != null) {
        // Create a TileProvider for each entry in the cursor
        final int count = cursor.getCount();

        // Initialise the tile cache that is reused for all TileProviders.
        // Note that the cache *MUST* be closed when the encapsulating Fragment is stopped.
        DiskLruCache tileCache = MapUtils.openDiskCache(getContext());

        list = new ArrayList<>(count);
        cursor.moveToFirst();
        while (!cursor.isAfterLast()) {
            final int floor = cursor.getInt(OverlayQuery.TILE_FLOOR);
            final String file = cursor.getString(OverlayQuery.TILE_FILE);

            File f = MapUtils.getTileFile(getContext().getApplicationContext(), file);
            if (f == null || !f.exists()) {
                // Skip the file if it is invalid or does not exist.
                LOGE(TAG, "Tile file not found for floor " + floor);
                break;
            }

            CachedTileProvider provider;
            try {
                SVGTileProvider svgProvider = new SVGTileProvider(f, mDPI);
                // Wrap the SVGTileProvider in a CachedTileProvider for caching on disk.
                provider = new CachedTileProvider(Integer.toString(floor), svgProvider,
                        tileCache);
            } catch (IOException e) {
                LOGD(TAG, "Could not create Tile Provider.");
                break;
            }
            list.add(new TileEntry(floor, provider));
            cursor.moveToNext();
        }

        cursor.close();
    }

    return list;
}