1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
| #include "com_ksnowlv_hellojniforjava_JavaCallJNI.h"
#include "PersonExtension.hpp"
#include "JNILog.h"
#include <stdlib.h>
#include <string.h>
JNIEXPORT jint JNICALL Java_com_ksnowlv_hellojniforjava_JavaCallJNI_showValue
(JNIEnv * enc, jclass cls , jint value) {
LOGI("jni value = %d",value);
value = value + 1;
LOGI("jni value +1 = %d",value);
return value;
}
/*
* Class: com_ksnowlv_hellojniforjava_JavaCallJNI
* Method: createPerson
* Signature: ()Ljava/lang/Object;
*/
JNIEXPORT jlong JNICALL Java_com_ksnowlv_hellojniforjava_JavaCallJNI_createPerson
(JNIEnv *env, jclass cls) {
void *p = createPerson();
return (jlong)p;
}
/*
* Class: com_ksnowlv_hellojniforjava_JavaCallJNI
* Method: destroyPerson
* Signature: (Ljava/lang/Object;)V
*/
JNIEXPORT void JNICALL Java_com_ksnowlv_hellojniforjava_JavaCallJNI_destroyPerson
(JNIEnv *env, jclass cls, jlong o) {
destroyPerson((void*)o);
}
/*
* Class: com_ksnowlv_hellojniforjava_JavaCallJNI
* Method: setPersonAge
* Signature: (Ljava/lang/Object;I)V
*/
JNIEXPORT void JNICALL Java_com_ksnowlv_hellojniforjava_JavaCallJNI_setPersonAge
(JNIEnv *env, jclass cls, jlong o, jint value) {
setPersonAge((void*)o,value);
}
/*
* Class: com_ksnowlv_hellojniforjava_JavaCallJNI
* Method: personAge
* Signature: (Ljava/lang/Object;)I
*/
JNIEXPORT jint JNICALL Java_com_ksnowlv_hellojniforjava_JavaCallJNI_personAge
(JNIEnv *env, jclass cls, jlong o) {
return personAge((void*)o);
}
/*
* Class: com_ksnowlv_hellojniforjava_JavaCallJNI
* Method: setPersonName
* Signature: (Ljava/lang/Object;Ljava/lang/String;)V
*/
JNIEXPORT void JNICALL Java_com_ksnowlv_hellojniforjava_JavaCallJNI_setPersonName
(JNIEnv *env, jclass cls, jlong o, jstring string) {
int length1 = (*env)->GetStringLength(env, string);
const jchar * jcstr = (*env)->GetStringChars(env, string, NULL);
jclass clsstring = (*env)->FindClass(env,"java/lang/String"); //String
jstring code = (*env)->NewStringUTF(env,"UTF-8"); //"UTF-8"
jmethodID methodID = (*env)->GetMethodID(env,clsstring, "getBytes", "(Ljava/lang/String;)[B"); //getBytes();
jbyteArray byteArray = (jbyteArray)(*env)->CallObjectMethod(env,string,methodID,code);
jsize length = (*env)->GetArrayLength(env,byteArray);
jbyte* bytes = (*env)->GetByteArrayElements(env,byteArray,JNI_FALSE);
if( length > 0){
char* buf = (char*)malloc(length+1); //"\0"
memcpy(buf,bytes,length);
buf[length]=0;
setPersonName((void*)o, buf);
LOGI("set name = %s",buf);
free(buf);
}else{
setPersonName((void*)o, NULL);
}
(*env)->ReleaseByteArrayElements(env,byteArray,bytes,0); //释放内存空间
}
/*
* Class: com_ksnowlv_hellojniforjava_JavaCallJNI
* Method: personName
* Signature: (Ljava/lang/Object;)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_com_ksnowlv_hellojniforjava_JavaCallJNI_personName
(JNIEnv *env, jclass cls, jlong o) {
LOGI("jni get name");
const char *name = personName((void*)o);
if ( name != NULL ) {
LOGI("jni name = %s",name);
return (*env)->NewStringUTF(env,name);
}else {
return (*env)->NewStringUTF(env,"");
}
}
|