content/browser/android/java/jni_helper.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_ANDROID_JAVA_JNI_HELPER_H_
   6 #define CONTENT_BROWSER_ANDROID_JAVA_JNI_HELPER_H_
   7
   8 #include <jni.h>
   9
  10 #include "content/common/content_export.h"
  11
  12 namespace content {
  13
  14 // Gets the method ID from the class name. Clears the pending Java exception
  15 // and returns NULL if the method is not found. Caches results.
  16 // Strings passed to this function are held in the cache and MUST remain valid
  17 // beyond the duration of all future calls to this function, across all
  18 // threads. In practice, this means that the function should only be used with
  19 // string constants.
  20 CONTENT_EXPORT jmethodID GetMethodIDFromClassName(JNIEnv* env,
  21                                                   const char* class_name,
  22                                                   const char* method,
  23                                                   const char* jni_signature);
  24
  25 }  // namespace content
  26
  27 #endif  // CONTENT_BROWSER_ANDROID_JAVA_JNI_HELPER_H_