Fixed for library loader in SoLoader sdk. (#148)

Summary:
Adding all supported abi path to load library from apk lib/[abi]/. Currently its adding path only for first supported abi. Due to this, few apps Lego Builder and Lingo Kids apps which uses library from arm64-v8a, but Soloader tries to load from first supported abi x86_64.

Pull Request resolved: #148

Test Plan:
~~Imported from GitHub, without a `Test Plan:` line.~~

- Add new test case `testPreferredAbiOrder()` to verify ABI ordering is preserved
`buck2 test fbsource//fbandroid/javatests/com/facebook/soloader:soloader -- SoLoaderDirectApkTest`

Reviewed By: adicatana, michalgr

Differential Revision: D94558731

Pulled By: danjin250

fbshipit-source-id: 9c024193e0157b69942ece2b6d90716e3415449d

Author: ankithbti52509

java/com/facebook/soloader/DirectApkSoSource.java

@@ -25,6 +25,7 @@
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.Map;
 import java.util.Set;
 import java.util.zip.ZipEntry;
@@ -117,27 +118,27 @@ public String getLibraryPath(String soName) throws IOException {
   }
 
   /*package*/ static Set<String> getDirectApkLdPaths(ApplicationInfo aInfo) {
-    Set<String> directApkPathSet = new HashSet<>();
+    Set<String> directApkPathSet = new LinkedHashSet<>();
 
     final String apkPath = aInfo.sourceDir;
-    final @Nullable String fallbackApkLdPath = getFallbackApkLdPath(apkPath);
-    if (fallbackApkLdPath != null) {
-      directApkPathSet.add(fallbackApkLdPath);
+    final @Nullable Set<String> fallbackApkLdPath = getFallbackApkLdPath(apkPath);
+    if (fallbackApkLdPath != null && !fallbackApkLdPath.isEmpty()) {
+      directApkPathSet.addAll(fallbackApkLdPath);
     }
 
     if (aInfo.splitSourceDirs != null) {
       for (String splitApkPath : aInfo.splitSourceDirs) {
-        final @Nullable String fallbackSplitApkLdPath = getFallbackApkLdPath(splitApkPath);
-        if (fallbackSplitApkLdPath != null) {
-          directApkPathSet.add(fallbackSplitApkLdPath);
+        final @Nullable Set<String> fallbackSplitApkLdPath = getFallbackApkLdPath(splitApkPath);
+        if (fallbackSplitApkLdPath != null && !fallbackSplitApkLdPath.isEmpty()) {
+          directApkPathSet.addAll(fallbackSplitApkLdPath);
         }
       }
     }
 
     return directApkPathSet;
   }
 
-  private static @Nullable String getFallbackApkLdPath(String apkPath) {
+  private static @Nullable Set<String> getFallbackApkLdPath(String apkPath) {
     final String[] supportedAbis = SysUtil.getSupportedAbis();
     if (apkPath == null || apkPath.isEmpty()) {
       LogUtil.w(
@@ -152,7 +153,11 @@ public String getLibraryPath(String soName) throws IOException {
               + ((supportedAbis == null) ? "null" : "empty"));
       return null;
     }
-    return apkPath + "!/lib/" + supportedAbis[0];
+    Set<String> apkLdPaths = new LinkedHashSet<>();
+    for (String supportedAbi : supportedAbis) {
+      apkLdPaths.add(apkPath + "!/lib/" + supportedAbi);
+    }
+    return apkLdPaths;
   }
 
   private void loadDependencies(