Invalidate callers of all methods overridden by XTypedArray

This is necessary because it's similar to a hook. Without this, some
calls to these methods might still be inlined with the original
implementation, not with the code in XTypedArray.

This is only necessary for SDK24+, previously inlining was disabled
completely.

Author: rovo89

app/src/main/java/de/robv/android/xposed/XposedBridge.java

@@ -506,6 +506,8 @@ public static Object invokeOriginalMethod(Member method, Object thisObject, Obje
 	/*package*/ static native void closeFilesBeforeForkNative();
 	/*package*/ static native void reopenFilesAfterForkNative();
 
+	/*package*/ static native void invalidateCallersNative(Member[] methods);
+
 	/** @hide */
 	public static final class CopyOnWriteSortedSet<E> {
 		private transient volatile Object[] elements = EMPTY_ARRAY;

app/src/main/java/de/robv/android/xposed/XposedHelpers.java

@@ -21,8 +21,10 @@
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Set;
 import java.util.WeakHashMap;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.zip.ZipFile;
@@ -1663,6 +1665,52 @@ protected AtomicInteger initialValue() {
 		}
 	}
 
+	//#################################################################################################
+
+	/**
+	 * Returns the method that is overridden by the given method.
+	 * It returns {@code null} if the method doesn't override another method or if that method is
+	 * abstract, i.e. if this is the first implementation in the hierarchy.
+	 */
+	/*package*/ static Method getOverriddenMethod(Method method) {
+		int modifiers = method.getModifiers();
+		if (Modifier.isStatic(modifiers) || Modifier.isPrivate(modifiers)) {
+			return null;
+		}
+
+		String name = method.getName();
+		Class<?>[] parameters = method.getParameterTypes();
+		Class<?> clazz = method.getDeclaringClass().getSuperclass();
+		while (clazz != null) {
+			try {
+				Method superMethod = clazz.getDeclaredMethod(name, parameters);
+				modifiers = superMethod.getModifiers();
+				if (!Modifier.isPrivate(modifiers) && !Modifier.isAbstract(modifiers)) {
+					return superMethod;
+				} else {
+					return null;
+				}
+			} catch (NoSuchMethodException ignored) {
+				clazz = clazz.getSuperclass();
+			}
+		}
+		return null;
+	}
+
+	/**
+	 * Returns all methods which this class overrides.
+	 */
+	/*package*/ static Set<Method> getOverriddenMethods(Class<?> clazz) {
+		Set<Method> methods = new HashSet<>();
+		for (Method method : clazz.getDeclaredMethods()) {
+			Method overridden = getOverriddenMethod(method);
+			if (overridden != null) {
+				methods.add(overridden);
+			}
+		}
+		return methods;
+	}
+
 	//#################################################################################################
 	// TODO helpers for view traversing
 	/*To make it easier, I will try and implement some more helpers:

app/src/main/java/de/robv/android/xposed/XposedInit.java

@@ -26,10 +26,13 @@
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.lang.ref.WeakReference;
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Map;
+import java.util.Set;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
 
@@ -50,6 +53,7 @@
 import static de.robv.android.xposed.XposedHelpers.findFieldIfExists;
 import static de.robv.android.xposed.XposedHelpers.getBooleanField;
 import static de.robv.android.xposed.XposedHelpers.getObjectField;
+import static de.robv.android.xposed.XposedHelpers.getOverriddenMethods;
 import static de.robv.android.xposed.XposedHelpers.getParameterIndexByType;
 import static de.robv.android.xposed.XposedHelpers.setObjectField;
 import static de.robv.android.xposed.XposedHelpers.setStaticBooleanField;
@@ -351,6 +355,12 @@ protected void afterHookedMethod(MethodHookParam param) throws Throwable {
 			}
 		}
 
+		// Invalidate callers of methods overridden by XTypedArray
+		if (Build.VERSION.SDK_INT >= 24) {
+			Set<Method> methods = getOverriddenMethods(XResources.XTypedArray.class);
+			XposedBridge.invalidateCallersNative(methods.toArray(new Member[methods.size()]));
+		}
+
 		// Replace TypedArrays with XTypedArrays
 		hookAllConstructors(TypedArray.class, new XC_MethodHook() {
 			@Override