/**将JAVA字符串数组转C char字符数组（俗称字符串）的数组**/
char** stringArrToCharArr(JNIEnv * env, jclass jc, jobjectArray strArray ){
jstring jstr;
jsize len = (*env)->GetArrayLength(env, strArray);
char **pstr = (char **) malloc(len * sizeof(char *));
int i=0;
for (i=0 ; i < len; i++) {
jstr = (*env)->GetObjectArrayElement(env, strArray, i);
pstr[i] = (char *)(*env)->GetStringUTFChars(env, jstr, 0);
}
return pstr;
}
/**按路径文件列表打开文件并进行拼接**/
jobject Java_com_cjz_image_ImageUtil_init(JNIEnv *env, jobject obj, jobjectArray pathArray){
char** pathArr = stringArrToCharArr(env, obj, pathArray);
int pathArrSize = (*env)->GetArrayLength(env, pathArray);
int i;
for(i = 0; i < pathArrSize; i++){
LOGI("filePath:%s\n", pathArr[i]);
}
return NULL;
}
MakeFile如下：
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_LDLIBS := -lm -llog -ljnigraphics
LOCAL_MODULE := JNIBitmapUtil
LOCAL_SRC_FILES := BitmapUtil.c
include $(BUILD_SHARED_LIBRARY)
要显示LOG要注意LOCAL_LDLIBS里面一定要有-llog参数，使得LOG库能顺利被编译进去
