diff --git a/cmds/idmap/scan.cpp b/cmds/idmap/scan.cpp
index 4f19a74..7b25f73 100644
--- a/cmds/idmap/scan.cpp
+++ b/cmds/idmap/scan.cpp
@@ -73,7 +73,7 @@
             size_t len;
             String16 key(parser.getAttributeName(i, &len));
             if (key == String16("targetPackage")) {
-                const uint16_t *p = parser.getAttributeStringValue(i, &len);
+                const char16_t *p = parser.getAttributeStringValue(i, &len);
                 if (p != NULL) {
                     target = String16(p, len);
                 }
diff --git a/core/jni/android_hardware_Camera.cpp b/core/jni/android_hardware_Camera.cpp
index 4cff56d..c4f8f20 100644
--- a/core/jni/android_hardware_Camera.cpp
+++ b/core/jni/android_hardware_Camera.cpp
@@ -516,10 +516,12 @@
     jobject weak_this, jint cameraId, jint halVersion, jstring clientPackageName)
 {
     // Convert jstring to String16
-    const char16_t *rawClientName = env->GetStringChars(clientPackageName, NULL);
+    const char16_t *rawClientName = reinterpret_cast<const char16_t*>(
+        env->GetStringChars(clientPackageName, NULL));
     jsize rawClientNameLen = env->GetStringLength(clientPackageName);
     String16 clientName(rawClientName, rawClientNameLen);
-    env->ReleaseStringChars(clientPackageName, rawClientName);
+    env->ReleaseStringChars(clientPackageName,
+                            reinterpret_cast<const jchar*>(rawClientName));
 
     sp<Camera> camera;
     if (halVersion == CAMERA_HAL_API_VERSION_NORMAL_CONNECT) {
@@ -782,7 +784,8 @@
     const jchar* str = env->GetStringCritical(params, 0);
     String8 params8;
     if (params) {
-        params8 = String8(str, env->GetStringLength(params));
+        params8 = String8(reinterpret_cast<const char16_t*>(str),
+                          env->GetStringLength(params));
         env->ReleaseStringCritical(params, str);
     }
     if (camera->setParameters(params8) != NO_ERROR) {
diff --git a/core/jni/android_media_AudioSystem.cpp b/core/jni/android_media_AudioSystem.cpp
index 57290f0..bdeaf29 100644
--- a/core/jni/android_media_AudioSystem.cpp
+++ b/core/jni/android_media_AudioSystem.cpp
@@ -260,7 +260,9 @@
     const jchar* c_keyValuePairs = env->GetStringCritical(keyValuePairs, 0);
     String8 c_keyValuePairs8;
     if (keyValuePairs) {
-        c_keyValuePairs8 = String8(c_keyValuePairs, env->GetStringLength(keyValuePairs));
+        c_keyValuePairs8 = String8(
+            reinterpret_cast<const char16_t*>(c_keyValuePairs),
+            env->GetStringLength(keyValuePairs));
         env->ReleaseStringCritical(keyValuePairs, c_keyValuePairs);
     }
     int status = check_AudioSystem_Command(AudioSystem::setParameters(c_keyValuePairs8));
@@ -273,7 +275,8 @@
     const jchar* c_keys = env->GetStringCritical(keys, 0);
     String8 c_keys8;
     if (keys) {
-        c_keys8 = String8(c_keys, env->GetStringLength(keys));
+        c_keys8 = String8(reinterpret_cast<const char16_t*>(c_keys),
+                          env->GetStringLength(keys));
         env->ReleaseStringCritical(keys, c_keys);
     }
     return env->NewStringUTF(AudioSystem::getParameters(c_keys8).string());
diff --git a/core/jni/android_os_Debug.cpp b/core/jni/android_os_Debug.cpp
index 3e70eb0..c170351 100644
--- a/core/jni/android_os_Debug.cpp
+++ b/core/jni/android_os_Debug.cpp
@@ -916,7 +916,8 @@
     const jchar* str = env->GetStringCritical(fileName, 0);
     String8 fileName8;
     if (str) {
-        fileName8 = String8(str, env->GetStringLength(fileName));
+        fileName8 = String8(reinterpret_cast<const char16_t*>(str),
+                            env->GetStringLength(fileName));
         env->ReleaseStringCritical(fileName, str);
     }
 
diff --git a/core/jni/android_os_Parcel.cpp b/core/jni/android_os_Parcel.cpp
index 5a8b4d2..4f29c50 100644
--- a/core/jni/android_os_Parcel.cpp
+++ b/core/jni/android_os_Parcel.cpp
@@ -277,7 +277,9 @@
         if (val) {
             const jchar* str = env->GetStringCritical(val, 0);
             if (str) {
-                err = parcel->writeString16(str, env->GetStringLength(val));
+                err = parcel->writeString16(
+                    reinterpret_cast<const char16_t*>(str),
+                    env->GetStringLength(val));
                 env->ReleaseStringCritical(val, str);
             }
         } else {
@@ -411,7 +413,7 @@
         size_t len;
         const char16_t* str = parcel->readString16Inplace(&len);
         if (str) {
-            return env->NewString(str, len);
+            return env->NewString(reinterpret_cast<const jchar*>(str), len);
         }
         return NULL;
     }
@@ -453,7 +455,8 @@
         jniThrowException(env, "java/lang/IllegalStateException", NULL);
         return NULL;
     }
-    String8 name8(str, env->GetStringLength(name));
+    String8 name8(reinterpret_cast<const char16_t*>(str),
+                  env->GetStringLength(name));
     env->ReleaseStringCritical(name, str);
     int flags=0;
     switch (mode&0x30000000) {
@@ -648,7 +651,9 @@
         // the caller expects to be invoking
         const jchar* str = env->GetStringCritical(name, 0);
         if (str != NULL) {
-            parcel->writeInterfaceToken(String16(str, env->GetStringLength(name)));
+            parcel->writeInterfaceToken(String16(
+                  reinterpret_cast<const char16_t*>(str),
+                  env->GetStringLength(name)));
             env->ReleaseStringCritical(name, str);
         }
     }
@@ -663,7 +668,8 @@
             IPCThreadState* threadState = IPCThreadState::self();
             const int32_t oldPolicy = threadState->getStrictModePolicy();
             const bool isValid = parcel->enforceInterface(
-                String16(str, env->GetStringLength(name)),
+                String16(reinterpret_cast<const char16_t*>(str),
+                         env->GetStringLength(name)),
                 threadState);
             env->ReleaseStringCritical(name, str);
             if (isValid) {
diff --git a/core/jni/android_util_AssetManager.cpp b/core/jni/android_util_AssetManager.cpp
index af4b8c8..21b4c3b 100644
--- a/core/jni/android_util_AssetManager.cpp
+++ b/core/jni/android_util_AssetManager.cpp
@@ -653,23 +653,29 @@
         return 0;
     }
 
-    const char16_t* defType16 = defType
-        ? env->GetStringChars(defType, NULL) : NULL;
+    const char16_t* defType16 = reinterpret_cast<const char16_t*>(defType)
+        ? reinterpret_cast<const char16_t*>(env->GetStringChars(defType, NULL))
+        : NULL;
     jsize defTypeLen = defType
         ? env->GetStringLength(defType) : 0;
-    const char16_t* defPackage16 = defPackage
-        ? env->GetStringChars(defPackage, NULL) : NULL;
+    const char16_t* defPackage16 = reinterpret_cast<const char16_t*>(defPackage)
+        ? reinterpret_cast<const char16_t*>(env->GetStringChars(defPackage,
+                                                                NULL))
+        : NULL;
     jsize defPackageLen = defPackage
         ? env->GetStringLength(defPackage) : 0;
 
     jint ident = am->getResources().identifierForName(
-        name16.get(), name16.size(), defType16, defTypeLen, defPackage16, defPackageLen);
+        reinterpret_cast<const char16_t*>(name16.get()), name16.size(),
+        defType16, defTypeLen, defPackage16, defPackageLen);
 
     if (defPackage16) {
-        env->ReleaseStringChars(defPackage, defPackage16);
+        env->ReleaseStringChars(defPackage,
+                                reinterpret_cast<const jchar*>(defPackage16));
     }
     if (defType16) {
-        env->ReleaseStringChars(defType, defType16);
+        env->ReleaseStringChars(defType,
+                                reinterpret_cast<const jchar*>(defType16));
     }
 
     return ident;
@@ -929,8 +935,11 @@
     const size_t N = res.getBasePackageCount();
     for (size_t i = 0; i < N; i++) {
         const String16 name = res.getBasePackageName(i);
-        env->CallVoidMethod(sparseArray, gSparseArrayOffsets.put, (jint) res.getBasePackageId(i),
-                env->NewString(name, name.size()));
+        env->CallVoidMethod(
+            sparseArray, gSparseArrayOffsets.put,
+            static_cast<jint>(res.getBasePackageId(i)),
+            env->NewString(reinterpret_cast<const jchar*>(name.string()),
+                           name.size()));
     }
     return sparseArray;
 }
@@ -1869,7 +1878,8 @@
                 str = env->NewStringUTF(str8);
             } else {
                 const char16_t* str16 = pool->stringAt(value.data, &strLen);
-                str = env->NewString(str16, strLen);
+                str = env->NewString(reinterpret_cast<const jchar*>(str16),
+                                     strLen);
             }
 
             // If one of our NewString{UTF} calls failed due to memory, an
diff --git a/core/jni/android_util_Binder.cpp b/core/jni/android_util_Binder.cpp
index 10a5b5a..2496e70 100644
--- a/core/jni/android_util_Binder.cpp
+++ b/core/jni/android_util_Binder.cpp
@@ -935,7 +935,8 @@
     IBinder* target = (IBinder*) env->GetLongField(obj, gBinderProxyOffsets.mObject);
     if (target != NULL) {
         const String16& desc = target->getInterfaceDescriptor();
-        return env->NewString(desc.string(), desc.size());
+        return env->NewString(reinterpret_cast<const jchar*>(desc.string()),
+                              desc.size());
     }
     jniThrowException(env, "java/lang/RuntimeException",
             "No binder found for object");
diff --git a/core/jni/android_util_Process.cpp b/core/jni/android_util_Process.cpp
index 41fa681..1d70909 100644
--- a/core/jni/android_util_Process.cpp
+++ b/core/jni/android_util_Process.cpp
@@ -109,7 +109,8 @@
     const jchar* str16 = env->GetStringCritical(name, 0);
     String8 name8;
     if (str16) {
-        name8 = String8(str16, env->GetStringLength(name));
+        name8 = String8(reinterpret_cast<const char16_t*>(str16),
+                        env->GetStringLength(name));
         env->ReleaseStringCritical(name, str16);
     }
 
@@ -140,7 +141,8 @@
     const jchar* str16 = env->GetStringCritical(name, 0);
     String8 name8;
     if (str16) {
-        name8 = String8(str16, env->GetStringLength(name));
+        name8 = String8(reinterpret_cast<const char16_t*>(str16),
+                        env->GetStringLength(name));
         env->ReleaseStringCritical(name, str16);
     }
 
@@ -385,7 +387,8 @@
     const jchar* str = env->GetStringCritical(name, 0);
     String8 name8;
     if (str) {
-        name8 = String8(str, env->GetStringLength(name));
+        name8 = String8(reinterpret_cast<const char16_t*>(str),
+                        env->GetStringLength(name));
         env->ReleaseStringCritical(name, str);
     }
 
diff --git a/core/jni/android_util_XmlBlock.cpp b/core/jni/android_util_XmlBlock.cpp
index 2cccb83..57afc2b 100644
--- a/core/jni/android_util_XmlBlock.cpp
+++ b/core/jni/android_util_XmlBlock.cpp
@@ -267,19 +267,20 @@
     const char16_t* ns16 = NULL;
     jsize nsLen = 0;
     if (ns) {
-        ns16 = env->GetStringChars(ns, NULL);
+        ns16 = reinterpret_cast<const char16_t*>(env->GetStringChars(ns, NULL));
         nsLen = env->GetStringLength(ns);
     }
 
-    const char16_t* name16 = env->GetStringChars(name, NULL);
+    const char16_t* name16 = reinterpret_cast<const char16_t*>(
+        env->GetStringChars(name, NULL));
     jsize nameLen = env->GetStringLength(name);
 
     jint idx = static_cast<jint>(st->indexOfAttribute(ns16, nsLen, name16, nameLen));
 
     if (ns) {
-        env->ReleaseStringChars(ns, ns16);
+        env->ReleaseStringChars(ns, reinterpret_cast<const jchar*>(ns16));
     }
-    env->ReleaseStringChars(name, name16);
+    env->ReleaseStringChars(name, reinterpret_cast<const jchar*>(name16));
 
     return idx;
 }
diff --git a/core/jni/android_view_KeyCharacterMap.cpp b/core/jni/android_view_KeyCharacterMap.cpp
index 4eed5a7..7653f58 100644
--- a/core/jni/android_view_KeyCharacterMap.cpp
+++ b/core/jni/android_view_KeyCharacterMap.cpp
@@ -150,7 +150,9 @@
         return 0;
     }
 
-    char16_t result = map->getMap()->getMatch(keyCode, chars, size_t(numChars), metaState);
+    char16_t result = map->getMap()->getMatch(
+        keyCode, reinterpret_cast<char16_t*>(chars), size_t(numChars),
+        metaState);
 
     env->ReleasePrimitiveArrayCritical(charsArray, chars, JNI_ABORT);
     return result;
@@ -178,7 +180,9 @@
 
     Vector<KeyEvent> events;
     jobjectArray result = NULL;
-    if (map->getMap()->getEvents(map->getDeviceId(), chars, size_t(numChars), events)) {
+    if (map->getMap()->getEvents(map->getDeviceId(),
+                                 reinterpret_cast<char16_t*>(chars),
+                                 size_t(numChars), events)) {
         result = env->NewObjectArray(jsize(events.size()), gKeyEventClassInfo.clazz, NULL);
         if (result) {
             for (size_t i = 0; i < events.size(); i++) {
diff --git a/libs/hwui/TextDropShadowCache.cpp b/libs/hwui/TextDropShadowCache.cpp
index 4eec462..96c09e6 100644
--- a/libs/hwui/TextDropShadowCache.cpp
+++ b/libs/hwui/TextDropShadowCache.cpp
@@ -40,7 +40,8 @@
     hash = JenkinsHashMix(hash, android::hash_type(italicStyle));
     hash = JenkinsHashMix(hash, android::hash_type(scaleX));
     if (text) {
-        hash = JenkinsHashMixShorts(hash, text, charCount);
+        hash = JenkinsHashMixShorts(
+            hash, reinterpret_cast<const uint16_t*>(text), charCount);
     }
     if (positions) {
         for (uint32_t i = 0; i < charCount * 2; i++) {
diff --git a/media/jni/android_media_MediaRecorder.cpp b/media/jni/android_media_MediaRecorder.cpp
index 3b1b1d7..9cadd86 100644
--- a/media/jni/android_media_MediaRecorder.cpp
+++ b/media/jni/android_media_MediaRecorder.cpp
@@ -462,11 +462,13 @@
     sp<JNIMediaRecorderListener> listener = new JNIMediaRecorderListener(env, thiz, weak_this);
     mr->setListener(listener);
 
-   // Convert client name jstring to String16
-    const char16_t *rawClientName = env->GetStringChars(packageName, NULL);
+    // Convert client name jstring to String16
+    const char16_t *rawClientName = reinterpret_cast<const char16_t*>(
+        env->GetStringChars(packageName, NULL));
     jsize rawClientNameLen = env->GetStringLength(packageName);
     String16 clientName(rawClientName, rawClientNameLen);
-    env->ReleaseStringChars(packageName, rawClientName);
+    env->ReleaseStringChars(packageName,
+                            reinterpret_cast<const jchar*>(rawClientName));
 
     // pass client package name for permissions tracking
     mr->setClientName(clientName);
diff --git a/media/jni/android_mtp_MtpDatabase.cpp b/media/jni/android_mtp_MtpDatabase.cpp
index 27f9916..ca5b3c7 100644
--- a/media/jni/android_mtp_MtpDatabase.cpp
+++ b/media/jni/android_mtp_MtpDatabase.cpp
@@ -818,7 +818,7 @@
     info.mAssociationType = MTP_ASSOCIATION_TYPE_UNDEFINED;
 
     jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
-    MtpString temp(str);
+    MtpString temp(reinterpret_cast<char16_t*>(str));
     info.mName = strdup((const char *)temp);
     env->ReleaseCharArrayElements(mStringBuffer, str, 0);
 
@@ -887,7 +887,8 @@
     }
 
     jchar* str = env->GetCharArrayElements(mStringBuffer, 0);
-    outFilePath.setTo(str, strlen16(str));
+    outFilePath.setTo(reinterpret_cast<char16_t*>(str),
+                      strlen16(reinterpret_cast<char16_t*>(str)));
     env->ReleaseCharArrayElements(mStringBuffer, str, 0);
 
     jlong* longValues = env->GetLongArrayElements(mLongBuffer, 0);
diff --git a/packages/services/PacProcessor/jni/com_android_pacprocessor_PacNative.cpp b/packages/services/PacProcessor/jni/com_android_pacprocessor_PacNative.cpp
index ca78bd4..2727338 100644
--- a/packages/services/PacProcessor/jni/com_android_pacprocessor_PacNative.cpp
+++ b/packages/services/PacProcessor/jni/com_android_pacprocessor_PacNative.cpp
@@ -48,7 +48,8 @@
 
 String16 jstringToString16(JNIEnv* env, jstring jstr) {
     const jchar* str = env->GetStringCritical(jstr, 0);
-    String16 str16(str, env->GetStringLength(jstr));
+    String16 str16(reinterpret_cast<const char16_t*>(str),
+                   env->GetStringLength(jstr));
     env->ReleaseStringCritical(jstr, str);
     return str16;
 }
@@ -57,7 +58,7 @@
     const char16_t* str = string.string();
     size_t len = string.size();
 
-    return env->NewString(str, len);
+    return env->NewString(reinterpret_cast<const jchar*>(str), len);
 }
 
 static jboolean com_android_pacprocessor_PacNative_createV8ParserNativeLocked(JNIEnv* /* env */,