JNIEXPORT jint JNICALL Java_com_example_hellojni_HelloJni_testJniCallbackArray(
JNIEnv* env, jobject thiz, jintArray buf, int w, int h) {
__android_log_print(ANDROID_LOG_INFO, LOG_TAG, "------testJniCallbackArray-----");
jint *cbuf;
cbuf =(*env)->NewIntArray(env, w*h); //(*env)->GetIntArrayElements(env, buf, JNI_FALSE);
if (cbuf == NULL) {//申请内存
return 0;
} int i; //初始化数据
for(i=0;i<w*h;i++){
cbuf[i]=i;
} int alpha = 0xFF << 24;
for (i = 0; i < h; i++) { //修改数组，
int j;
for (j = 0; j < w; j++) {
// 获得像素的颜色
int color = cbuf[w * i + j];
int red = ((color & 0x00FF0000) >> 16);
int green = ((color & 0x0000FF00) >> 8);
int blue = color & 0x000000FF;
color = (red + green + blue) / 3;
color = alpha | (color << 16) | (color << 8) | color;
cbuf[w * i + j] = color;
}
} int size = w * h;
//分配传回数组内存
jintArray result = (*env)->NewIntArray(env,size);
//设置新的值 。
(*env)->SetIntArrayRegion(env,result, 0, size, cbuf);
//(*env)->ReleaseIntArrayElements(env, buf, cbuf, 0);
__android_log_print(ANDROID_LOG_INFO, LOG_TAG, "-----------"); jclass jclazz = (*env)->GetObjectClass(env, thiz);
jmethodID methodID = (*env)->GetMethodID(env, jclazz, "jniCallback2","([I)V");//回调，将数组传回。
(*env)->CallVoidMethod(env, thiz, methodID, result); return 1;
}java里就一个简单的：
public void jniCallback2(int[] arr) {
System.out.println("jniCallback2:"+arr);
}
+然后就一堆垃圾错误了：
04-26 14:34:39.484: I/DEBUG(11094): pid: 11387, tid: 11389 >>> com.example.hellojni <<<
04-26 14:34:39.484: I/DEBUG(11094): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr ff000020
04-26 14:34:39.484: I/DEBUG(11094): r0 00000000 r1 ff000000 r2 40009330 r3 400091e8
04-26 14:34:39.492: I/DEBUG(11094): r4 000057af r5 40009228 r6 40583f48 r7 aca9f60c
04-26 14:34:39.492: I/DEBUG(11094): r8 fffffe84 r9 80000000 10 400091e8 fp 40584000
04-26 14:34:39.496: I/DEBUG(11094): ip acaa4d48 sp 4625fd58 lr aca30910 pc aca2fc5c cpsr a0070010
04-26 14:34:39.500: I/DEBUG(11094): d0 00000000006835fe d1 00650072002b9161
04-26 14:34:39.500: I/DEBUG(11094): d2 002e00700070006c d3 0069007400630020
04-26 14:34:39.500: I/DEBUG(11094): d4 4428ef3c002a2890 d5 444710004428ef70
04-26 14:34:39.500: I/DEBUG(11094): d6 00581fe044471034 d7 000000314d88280e
04-26 14:34:39.500: I/DEBUG(11094): d8 00003d6aedea8504 d9 0000000000000000
04-26 14:34:39.500: I/DEBUG(11094): d10 0000000000000000 d11 0000000000000000
04-26 14:34:39.500: I/DEBUG(11094): d12 0000000000000000 d13 0000000000000000
04-26 14:34:39.500: I/DEBUG(11094): d14 0000000000000000 d15 0000000000000000
04-26 14:34:39.500: I/DEBUG(11094): d16 0000000000000000 d17 3fe999999999999a
04-26 14:34:39.500: I/DEBUG(11094): d18 42eccefa43de3400 d19 3fbc71c71c71c71c
04-26 14:34:39.500: I/DEBUG(11094): d20 4008000000000000 d21 3fd99a27ad32ddf5
04-26 14:34:39.500: I/DEBUG(11094): d22 3fd24998d6307188 d23 3fcc7288e957b53b
04-26 14:34:39.515: I/DEBUG(11094): d24 3fc74721cad6b0ed d25 3fc39a09d078c69f
04-26 14:34:39.515: I/DEBUG(11094): d26 0000000000000000 d27 0000000000000000
04-26 14:34:39.519: I/DEBUG(11094): d28 0000000000000000 d29 0000000000000000
04-26 14:34:39.519: I/DEBUG(11094): d30 0000000000000000 d31 0000000000000000
04-26 14:34:39.519: I/DEBUG(11094): scr 80000010
04-26 14:34:39.609: I/DEBUG(11094): #00 pc 0002fc5c /system/lib/libdvm.so
04-26 14:34:39.609: I/DEBUG(11094): #01 pc 0003090c /system/lib/libdvm.so (dvmHeapScanMarkedObjects)
04-26 14:34:39.609: I/DEBUG(11094): #02 pc 0001a780 /system/lib/libdvm.so (dvmCollectGarbageInternal)
04-26 14:34:39.609: I/DEBUG(11094): code around pc:
04-26 14:34:39.609: I/DEBUG(11094): aca2fc3c 0a000001 e1a01006 eb0145b1 e797c008
04-26 14:34:39.609: I/DEBUG(11094): aca2fc4c e5961000 e59c20ac e1510002 0a0000b5
04-26 14:34:39.609: I/DEBUG(11094): aca2fc5c e5912020 e3120101 0a000055 e3510000
04-26 14:34:39.609: I/DEBUG(11094): aca2fc6c e1a03001 0a000021 e5950010 e1510000
04-26 14:34:39.609: I/DEBUG(11094): aca2fc7c 3a00001e e5953000 e593c00c e5930010
04-26 14:34:39.609: I/DEBUG(11094): code around lr:
04-26 14:34:39.609: I/DEBUG(11094): aca308f0 e58de004 e16f2f17 e59d3004 e585b014
04-26 14:34:39.609: I/DEBUG(11094): aca30900 e1a01005 e1c77239 e0830182 ebfffcc0
04-26 14:34:39.609: I/DEBUG(11094): aca30910 e3570000 1afffff6 e598c010 e598100c
04-26 14:34:39.609: I/DEBUG(11094): aca30920 e061000c e1a02420 eaffffdb 0006eda8
04-26 14:34:39.609: I/DEBUG(11094): aca30930 fffffe84 e1a03001 e59f104c e92d4030
04-26 14:34:39.609: I/DEBUG(11094): stack:
04-26 14:34:39.609: I/DEBUG(11094): 4625fd18 0000000f
04-26 14:34:39.609: I/DEBUG(11094): 4625fd1c aca4e35f /system/lib/libdvm.so
04-26 14:34:39.609: I/DEBUG(11094): 4625fd20 4428ea84
04-26 14:34:39.609: I/DEBUG(11094): 4625fd24 46c6dfe4
04-26 14:34:39.613: I/DEBUG(11094): 4625fd28 aca83acb /system/lib/libdvm.so
04-26 14:34:39.613: I/DEBUG(11094): 4625fd28 aca83acb /system/lib/libdvm.so
04-26 14:34:39.613: I/DEBUG(11094): 4625fd2c fffffe84
04-26 14:34:39.613: I/DEBUG(11094): 4625fd30 46c6dfe4
04-26 14:34:39.613: I/DEBUG(11094): 4625fd34 0000535c
04-26 14:34:39.613: I/DEBUG(11094): 4625fd38 40009228
04-26 14:34:39.613: I/DEBUG(11094): 4625fd3c 4053ecb8
04-26 14:34:39.613: I/DEBUG(11094): 4625fd40 aca9f60c
04-26 14:34:39.613: I/DEBUG(11094): 4625fd44 fffffe84
04-26 14:34:39.613: I/DEBUG(11094): 4625fd48 80000000 /system/lib/libnfc_ndef.so
04-26 14:34:39.613: I/DEBUG(11094): 4625fd4c 400091e8
04-26 14:34:39.613: I/DEBUG(11094): 4625fd50 df002777
04-26 14:34:39.613: I/DEBUG(11094): 4625fd54 e3a070ad
04-26 14:34:39.613: I/DEBUG(11094): #00 4625fd58 000057af
04-26 14:34:39.613: I/DEBUG(11094): 4625fd5c 40009228
04-26 14:34:39.613: I/DEBUG(11094): 4625fd60 0057b000
04-26 14:34:39.613: I/DEBUG(11094): 4625fd64 00000000
04-26 14:34:39.613: I/DEBUG(11094): 4625fd68 40009304
04-26 14:34:39.613: I/DEBUG(11094): 4625fd6c 80000000 /system/lib/libnfc_ndef.so
04-26 14:34:39.617: I/DEBUG(11094): 4625fd70 400091e8
04-26 14:34:39.617: I/DEBUG(11094): 4625fd74 aca30910 /system/lib/libdvm.so
04-26 14:34:39.617: I/DEBUG(11094): #01 4625fd78 acaa4d48
04-26 14:34:39.617: I/DEBUG(11094): 4625fd7c 40583f00
04-26 14:34:39.617: I/DEBUG(11094): 4625fd80 aca9f60c
04-26 14:34:39.617: I/DEBUG(11094): 4625fd84 400091e8
04-26 14:34:39.617: I/DEBUG(11094): 4625fd88 aca9f60c
04-26 14:34:39.617: I/DEBUG(11094): 4625fd8c 00000001
04-26 14:34:39.617: I/DEBUG(11094): 4625fd90 fffffe8c
04-26 14:34:39.617: I/DEBUG(11094): 4625fd94 fffffe84
04-26 14:34:39.617: I/DEBUG(11094): 4625fd98 00002710
04-26 14:34:39.617: I/DEBUG(11094): 4625fd9c acaa4d48
04-26 14:34:39.617: I/DEBUG(11094): 4625fda0 00000001
04-26 14:34:39.617: I/DEBUG(11094): 4625fda4 aca1a784 /system/lib/libdvm.so
04-26 14:34:40.222: I/BootReceiver(165): Copying /data/tombstones/tombstone_02 to DropBox (SYSTEM_TOMBSTONE)
04-26 14:34:40.234: E/InputDispatcher(165): channel '4077c518 com.example.hellojni/com.example.hellojni.HelloJni (server)' ~ Consumer closed input channel or an error occurred. events=0x8
04-26 14:34:40.234: E/InputDispatcher(165): channel '4077c518 com.example.hellojni/com.example.hellojni.HelloJni (server)' ~ Channel is unrecoverably broken and will be disposed!
04-26 14:34:40.234: D/Zygote(113): Process 11387 terminated by signal (11)
04-26 14:34:40.242: I/WindowManager(165): WIN DEATH: Window{4077c518 com.example.hellojni/com.example.hellojni.HelloJni paused=false}
04-26 14:34:40.242: I/ActivityManager(165): Process com.example.hellojni (pid 11387) has died.
04-26 14:34:40.269: W/InputManagerService(165): Got RemoteException sending setActive(false) notification to pid 11387 uid 10012
cbuf =(*env)->NewIntArray(env, w*h); //(*env)->GetIntArrayElements(env, buf, JNI_FALSE);
是这里出错了，
jintArray jints = (*env)->NewIntArray(env, w * h);
cbuf = (*env)->GetIntArrayElements(env, jints, NULL);
这样就可以了
用完 再释放一次
(*env)->DeleteLocalRef(env,jints);