1 /* 2 * Copyright 2017 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 // Android's FindClass() is tricky because the app-specific ClassLoader is not 12 // consulted when there is no app-specific frame on the stack (i.e. when called 13 // from a thread created from native C++ code). These helper functions provide a 14 // workaround for this. 15 // http://developer.android.com/training/articles/perf-jni.html#faq_FindClass 16 17 #ifndef SDK_ANDROID_NATIVE_API_JNI_CLASS_LOADER_H_ 18 #define SDK_ANDROID_NATIVE_API_JNI_CLASS_LOADER_H_ 19 20 #include <jni.h> 21 22 #include "sdk/android/native_api/jni/scoped_java_ref.h" 23 24 namespace webrtc { 25 26 // This method should be called from JNI_OnLoad and before any calls to 27 // FindClass. This is normally called by InitAndroid. 28 void InitClassLoader(JNIEnv* env); 29 30 // This function is identical to JNIEnv::FindClass except that it works from any 31 // thread. This function loads and returns a local reference to the class with 32 // the given name. The name argument is a fully-qualified class name. For 33 // example, the fully-qualified class name for the java.lang.String class is: 34 // "java/lang/String". This function will be used from the JNI generated code 35 // and should rarely be used manually. 36 ScopedJavaLocalRef<jclass> GetClass(JNIEnv* env, const char* name); 37 38 } // namespace webrtc 39 40 #endif // SDK_ANDROID_NATIVE_API_JNI_CLASS_LOADER_H_ 41