获得APK的图标

public static Drawable getApkIcon(String path, Context mContext) {
        Drawable icon = null;
        try {
            String apkPath = path;
            PackageParser packageParser = new PackageParser(apkPath);
            DisplayMetrics metrics = new DisplayMetrics();
            metrics.setToDefaults();
            PackageParser.Package mPkgInfo = packageParser.parsePackage(
                    new File(apkPath), apkPath, metrics, 0);
            ApplicationInfo info = mPkgInfo.applicationInfo;
            Resources pRes = mContext.getResources();
            AssetManager assmgr = new AssetManager();
            assmgr.addAssetPath(apkPath);
            Resources res = new Resources(assmgr, pRes.getDisplayMetrics(),
                    pRes.getConfiguration());
            if (info.icon != 0) {
                icon = res.getDrawable(info.icon);
                // bitmap = MyUtil.drawableToBitmap(icon);
            }
            packageParser = null;
            metrics = null;
            mPkgInfo = null;
            info = null;
            pRes = null;
            assmgr = null;
            res = null;
        } catch (Exception e) {
            icon = null;
        }
        return icon;
    }