Example usage for android.support.v4.util LruCache put

Introduction

In this page you can find the example usage for android.support.v4.util LruCache put.

Prototype

public final V put(K key, V value) 

Source Link

Document

Caches value for key .

Usage

From source file:com.bobomee.android.common.util.ScreenUtil.java

/**
 * https://gist.github.com/PrashamTrivedi/809d2541776c8c141d9a
 *///w w w .  ja v a 2s.co m
public static Bitmap shotRecyclerView(RecyclerView view) {
    RecyclerView.Adapter adapter = view.getAdapter();
    Bitmap bigBitmap = null;
    if (adapter != null) {
        int size = adapter.getItemCount();
        int height = 0;
        Paint paint = new Paint();
        int iHeight = 0;
        final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);

        // Use 1/8th of the available memory for this memory cache.
        final int cacheSize = maxMemory / 8;
        LruCache<String, Bitmap> bitmaCache = new LruCache<>(cacheSize);
        for (int i = 0; i < size; i++) {
            RecyclerView.ViewHolder holder = adapter.createViewHolder(view, adapter.getItemViewType(i));
            adapter.onBindViewHolder(holder, i);
            holder.itemView.measure(View.MeasureSpec.makeMeasureSpec(view.getWidth(), View.MeasureSpec.EXACTLY),
                    View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
            holder.itemView.layout(0, 0, holder.itemView.getMeasuredWidth(),
                    holder.itemView.getMeasuredHeight());
            holder.itemView.setDrawingCacheEnabled(true);
            holder.itemView.buildDrawingCache();
            Bitmap drawingCache = holder.itemView.getDrawingCache();
            if (drawingCache != null) {

                bitmaCache.put(String.valueOf(i), drawingCache);
            }
            height += holder.itemView.getMeasuredHeight();
        }

        bigBitmap = Bitmap.createBitmap(view.getMeasuredWidth(), height, Bitmap.Config.ARGB_8888);
        Canvas bigCanvas = new Canvas(bigBitmap);
        Drawable lBackground = view.getBackground();
        if (lBackground instanceof ColorDrawable) {
            ColorDrawable lColorDrawable = (ColorDrawable) lBackground;
            int lColor = lColorDrawable.getColor();
            bigCanvas.drawColor(lColor);
        }

        for (int i = 0; i < size; i++) {
            Bitmap bitmap = bitmaCache.get(String.valueOf(i));
            bigCanvas.drawBitmap(bitmap, 0f, iHeight, paint);
            iHeight += bitmap.getHeight();
            bitmap.recycle();
        }
    }
    return bigBitmap;
}

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From source file:com.robopupu.api.component.BitmapManagerImpl.java

private void addBitmap(final String key, final String cacheName, final Bitmap bitmap,
        final boolean useFileCaching) {
    LruCache<String, Bitmap> cache = bitmapCaches.get(cacheName);

    if (cache == null) {
        cache = addCache(cacheName);/*  ww w .  j ava  2  s. com*/
    }

    cache.put(key, bitmap);

    if (useFileCaching) {
        final Context context = D.get(Context.class);
        final String applicationDirectory = AppToolkit.getApplicationDirectoryPath(context);
        final StringBuilder path = new StringBuilder();
        path.append(applicationDirectory);
        path.append("/");
        path.append(StringToolkit.encodeFileName(cacheName));

        final File cacheDirectory = new File(path.toString());

        if (!cacheDirectory.exists()) {
            if (!cacheDirectory.mkdirs()) {
                throw new IllegalStateException("Failed to create the cache directory");
            }
        }
        path.append("/");
        path.append(StringToolkit.encodeFileName(key));

        try {
            final FileOutputStream outputStream = new FileOutputStream(path.toString());
            bitmap.compress(Bitmap.CompressFormat.PNG, 90, outputStream);
        } catch (Exception e) {
            Log.d(TAG, "Failed to cache a pitmap: " + path);
        }
    }
}

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From source file:org.fuusio.api.graphics.BitmapManagerImpl.java

private void addBitmap(final String key, final String cacheName, final Bitmap bitmap,
        final boolean useFileCaching) {
    LruCache<String, Bitmap> cache = mBitmacaches.get(cacheName);

    if (cache == null) {
        cache = addCache(cacheName);/* w ww  .ja v a  2s . com*/
    }

    cache.put(key, bitmap);

    if (useFileCaching) {
        final File applicationDirectory = AppToolkit.getApplicationDirectory();
        final StringBuilder path = new StringBuilder(applicationDirectory.getAbsolutePath());
        path.append("/");
        path.append(StringToolkit.encodeFileName(cacheName));

        final File cacheDirectory = new File(path.toString());

        if (!cacheDirectory.exists()) {
            cacheDirectory.mkdirs();
        }

        assert (cacheDirectory.exists() && cacheDirectory.canWrite());

        path.append("/");
        path.append(StringToolkit.encodeFileName(key));

        try {
            final FileOutputStream outputStream = new FileOutputStream(path.toString());
            bitmap.compress(Bitmap.CompressFormat.PNG, 90, outputStream);
        } catch (final Exception e) {
            L.wtf(BitmapManagerImpl.class, "", e.toString());
        }
    }
}

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From source file:com.murrayc.galaxyzoo.app.IconsCache.java

private boolean reloadIcon(final String cssName, final LruCache<String, Bitmap> map) {
    //LruCache throws exceptions on null keys or values.
    if (TextUtils.isEmpty(cssName)) {
        return false;
    }/*from  ww  w  . j  a  v a 2s.  c o m*/

    //Log.info("reloadIcon:" + cssName);

    //Avoid loading and adding it again:
    if (map.get(cssName) != null) {
        return true;
    }

    /*
    Bitmap bitmap = null;
            
    //First get it from the cache, because that would be newer than the bundled asset:
    final String cacheFileUri = getCacheIconFileUri(cssName);
    if (TextUtils.isEmpty(cacheFileUri)) {
    return false;
    }
            
    final File cacheFile = new File(cacheFileUri);
    if (cacheFile.exists()) {
    bitmap = BitmapFactory.decodeFile(cacheFileUri);
    if (bitmap == null) {
        //The file contents are invalid.
        //Maybe the download was incomplete or something else odd happened.
        //Anyway, we should stop trying to use it,
        //And tell the caller about the failure,
        //so we can reload it by reloading and reparsing everything.
        Log.error("IconsCache.reloadIcon(): BitmapFactory.decodeFile() failed for file (now deleting it): ", cacheFileUri);
            
        final File file = new File(cacheFileUri);
        if (!file.delete()) {
            Log.error("IconsCache.reloadIcon(): Failed to delete invalid cache file.");
            return false;
        }
    }
    }
            
    if (bitmap == null) {
    */

    //We bundle the icons with the app,
    //so fall back to that:
    Bitmap bitmap = null;
    final InputStream inputStreamAsset = Utils.openAsset(getContext(), getIconAssetPath(cssName));
    if (inputStreamAsset != null) {
        bitmap = BitmapFactory.decodeStream(inputStreamAsset);
    }
    //}

    if (bitmap == null) {
        Log.error("reloadIcon(): Could not load icon: " + cssName);
        return false;
    }

    map.put(cssName, bitmap);
    return true;
}

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