小编MoM*_*oMo的帖子

我对这个问题感到非常沮丧.我一直得到它,我无法弄清楚为什么.这是我在src/jni中的Android.mk

LOCAL_PATH := $(call my-dir) 
include $(CLEAR_VARS)
LOCAL_MODULE    := tutorial01
LOCAL_SRC_FILES := tutorial01.c
LOCAL_LDLIBS := -llog -lz
LOCAL_SHARED_LIBRARIES := libavformat_static libavcodec_static libavutil_static 
include $(BUILD_SHARED_LIBRARY)
$(call import-module,ffmpeg-2.4.2/android/armv7-a)

这是我的/jni/ffmpeg-2.4.2/android/armv7-a中的Android.mk

LOCAL_PATH:= $(call my-dir)
#static version of libavcodec
include $(CLEAR_VARS)
LOCAL_MODULE:= libavcodec
LOCAL_SRC_FILES:= lib/libavcodec.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_STATIC_LIBRARY)
#static version of libavformat
include $(CLEAR_VARS)
LOCAL_MODULE:= libavformat
LOCAL_SRC_FILES:= lib/libavformat.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_STATIC_LIBRARY)
#static version of libswscale
include $(CLEAR_VARS)
LOCAL_MODULE:= libswscale
LOCAL_SRC_FILES:= lib/libswscale.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_STATIC_LIBRARY)
#static version of libavutil
include …

我正在尝试使用Linux机器上的ant构建android项目.该项目在我的Mac机器上构建时没有问题,但在linux机器上.似乎无法弄明白为什么!

我打字了

ant release

然后我收到以下消息:

 BUILD FAILED
/android/android-sdk-linux/tools/ant/build.xml:885: The following error occurred while executing this line:
/android/android-sdk-linux/tools/ant/build.xml:887: The following error occurred while executing this line:
/android/android-sdk-linux/tools/ant/build.xml:899: The following error occurred while executing this line:
/android/android-sdk-linux/tools/ant/build.xml:281: null returned: 137

以及build.xml文件中的行

275 <dex executable="${dx}"
276                    output="${intermediate.dex.file}"
277                    dexedlibs="${out.dexed.absolute.dir}"
278                    nolocals="@{nolocals}"
279                    forceJumbo="${dex.force.jumbo}"
280                    disableDexMerger="${dex.disable.merger}"
281                    verbose="${verbose}">
      <path path="${out.dex.input.absolute.dir}"/>
      <path refid="out.dex.jar.input.ref" />
      <external-libs />
    </dex>
.
.
.
.
.

884   <target name="-dex" depends="-compile, -post-compile, -obfuscate">
885      <do-only-if-manifest-hasCode elseText="hasCode = false. Skipping...">
886 …

假设我们有以下扩展函数：

class Helper {
  companion object {
    fun Int.plus(value: String) = Integer.valueOf(value).plus(this)
  }

}

如何plus从Helper另一个类中的类访问扩展函数。有没有办法让我们可以做这样的事情，例如：

class OtherClass {
  fun someMethod() {
    val eight = 7.Helper.Companion.plus("1")
  }

}