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Commit 64f33524 authored by Diego Perez's avatar Diego Perez
Browse files

Add drawable caching 

Change-Id: I4de4b55c1eddfd43e53ead27e2a284a4c18cb3cb
(cherry picked from commit b0ee962da6fe994db45e2a8221896ab67c2604be)
parent 16560f6e

tools/layoutlib/bridge/src/android/content/res/Resources_Delegate.java

+21 −2
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ import android.content.res.Resources.Theme; 
import android.graphics.drawable.Drawable;

import android.util.AttributeSet;

import android.util.DisplayMetrics;

import android.util.LruCache;

import android.util.TypedValue;

import android.view.ViewGroup.LayoutParams;
@@ -58,6 +59,9 @@ import java.util.Iterator; 
public class Resources_Delegate {



    private static boolean[] mPlatformResourceFlag = new boolean[1];

    // TODO: This cache is cleared every time a render session is disposed. Look into making this

    // more long lived.

    private static LruCache<String, Drawable.ConstantState> sDrawableCache = new LruCache<>(50);



    public static Resources initSystem(BridgeContext context,

            AssetManager assets,
@@ -75,6 +79,7 @@ public class Resources_Delegate { 
     * would prevent us from unloading the library.

     */

    public static void disposeSystem() {

        sDrawableCache.evictAll();

        Resources.mSystem.mContext = null;

        Resources.mSystem.mLayoutlibCallback = null;

        Resources.mSystem = null;
@@ -137,9 +142,23 @@ public class Resources_Delegate { 
    @LayoutlibDelegate

    static Drawable getDrawable(Resources resources, int id, Theme theme) {

        Pair<String, ResourceValue> value = getResourceValue(resources, id, mPlatformResourceFlag);



        if (value != null) {

            return ResourceHelper.getDrawable(value.getSecond(), resources.mContext, theme);

            String key = value.getSecond().getValue();



            Drawable.ConstantState constantState = key != null ? sDrawableCache.get(key) : null;

            Drawable drawable;

            if (constantState != null) {

                drawable = constantState.newDrawable(resources, theme);

            } else {

                drawable =

                        ResourceHelper.getDrawable(value.getSecond(), resources.mContext, theme);



                if (key != null) {

                    sDrawableCache.put(key, drawable.getConstantState());

                }

            }



            return drawable;

        }



        // id was not found or not resolved. Throw a NotFoundException.