diff --git a/camera/common/1.0/default/CameraMetadata.cpp b/camera/common/1.0/default/CameraMetadata.cpp
index eb1bd1c..1da88ec 100644
--- a/camera/common/1.0/default/CameraMetadata.cpp
+++ b/camera/common/1.0/default/CameraMetadata.cpp
@@ -275,7 +275,7 @@
         return res;
     }
     // string.size() doesn't count the null termination character.
-    return updateImpl(tag, (const void*)string.string(), string.size() + 1);
+    return updateImpl(tag, (const void*)string.c_str(), string.size() + 1);
 }
 
 status_t CameraMetadata::update(const camera_metadata_ro_entry &entry) {
@@ -483,9 +483,9 @@
     size_t sectionLength = 0;
     size_t totalSectionCount = ANDROID_SECTION_COUNT + vendorSectionCount;
     for (size_t i = 0; i < totalSectionCount; ++i) {
-
-        const char *str = (i < ANDROID_SECTION_COUNT) ? camera_metadata_section_names[i] :
-                (*vendorSections)[i - ANDROID_SECTION_COUNT].string();
+        const char* str = (i < ANDROID_SECTION_COUNT)
+                                  ? camera_metadata_section_names[i]
+                                  : (*vendorSections)[i - ANDROID_SECTION_COUNT].c_str();
 
         ALOGV("%s: Trying to match against section '%s'", __FUNCTION__, str);
 
diff --git a/camera/common/1.0/default/CameraParameters.cpp b/camera/common/1.0/default/CameraParameters.cpp
index e707b08..a31b807 100644
--- a/camera/common/1.0/default/CameraParameters.cpp
+++ b/camera/common/1.0/default/CameraParameters.cpp
@@ -211,7 +211,7 @@
 
 void CameraParameters::unflatten(const String8 &params)
 {
-    const char *a = params.string();
+    const char* a = params.c_str();
     const char *b;
 
     mMap.clear();
@@ -277,7 +277,7 @@
     String8 v = mMap.valueFor(String8(key));
     if (v.length() == 0)
         return 0;
-    return v.string();
+    return v.c_str();
 }
 
 int CameraParameters::getInt(const char *key) const
@@ -469,7 +469,7 @@
         String8 k, v;
         k = mMap.keyAt(i);
         v = mMap.valueAt(i);
-        ALOGD("%s: %s\n", k.string(), v.string());
+        ALOGD("%s: %s\n", k.c_str(), v.c_str());
     }
 }
 
@@ -484,10 +484,10 @@
         String8 k, v;
         k = mMap.keyAt(i);
         v = mMap.valueAt(i);
-        snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string());
+        snprintf(buffer, 255, "\t%s: %s\n", k.c_str(), v.c_str());
         result.append(buffer);
     }
-    write(fd, result.string(), result.size());
+    write(fd, result.c_str(), result.size());
     return NO_ERROR;
 }
 
diff --git a/camera/common/1.0/default/VendorTagDescriptor.cpp b/camera/common/1.0/default/VendorTagDescriptor.cpp
index d2bee85..ba3fe39 100644
--- a/camera/common/1.0/default/VendorTagDescriptor.cpp
+++ b/camera/common/1.0/default/VendorTagDescriptor.cpp
@@ -100,7 +100,7 @@
     if (index < 0) {
         return VENDOR_SECTION_NAME_ERR;
     }
-    return mSections[mTagToSectionMap.valueAt(index)].string();
+    return mSections[mTagToSectionMap.valueAt(index)].c_str();
 }
 
 ssize_t VendorTagDescriptor::getSectionIndex(uint32_t tag) const {
@@ -112,7 +112,7 @@
     if (index < 0) {
         return VENDOR_TAG_NAME_ERR;
     }
-    return mTagToNameMap.valueAt(index).string();
+    return mTagToNameMap.valueAt(index).c_str();
 }
 
 int VendorTagDescriptor::getTagType(uint32_t tag) const {
@@ -130,13 +130,13 @@
 status_t VendorTagDescriptor::lookupTag(const String8& name, const String8& section, /*out*/uint32_t* tag) const {
     ssize_t index = mReverseMapping.indexOfKey(section);
     if (index < 0) {
-        ALOGE("%s: Section '%s' does not exist.", __FUNCTION__, section.string());
+        ALOGE("%s: Section '%s' does not exist.", __FUNCTION__, section.c_str());
         return BAD_VALUE;
     }
 
     ssize_t nameIndex = mReverseMapping[index]->indexOfKey(name);
     if (nameIndex < 0) {
-        ALOGE("%s: Tag name '%s' does not exist.", __FUNCTION__, name.string());
+        ALOGE("%s: Tag name '%s' does not exist.", __FUNCTION__, name.c_str());
         return BAD_VALUE;
     }
 
@@ -170,8 +170,8 @@
         int type = mTagToTypeMap.at(tag);
         const char* typeName = (type >= 0 && type < NUM_TYPES) ?
                 camera_metadata_type_names[type] : "UNKNOWN";
-        dprintf(fd, "%*s0x%x (%s) with type %d (%s) defined in section %s\n", indentation + 2,
-            "", tag, name.string(), type, typeName, sectionName.string());
+        dprintf(fd, "%*s0x%x (%s) with type %d (%s) defined in section %s\n", indentation + 2, "",
+                tag, name.c_str(), type, typeName, sectionName.c_str());
     }
 
 }