小编use*_*070的帖子

我已经更改了android ndk的HelloJni示例,我想写一些东西到stdout.这是Jni代码:

#include <stdlib.h>
#include <jni.h>
#include <stdio.h>

jstring
Java_com_example_hellojni_HelloJni_stringFromJNI( JNIEnv* env,
                                              jobject thiz )
{
    printf("Hello from C !\n");
    return (*env)->NewStringUTF(env, "Hello from JNI !");
}

这是我的日志:

09-28 13:07:02.906: I/ActivityManager(1650): START {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.example.hellojni/.HelloJni u=0} from pid 1790
09-28 13:07:03.007: D/dalvikvm(1650): GC_FOR_ALLOC freed 687K, 10% free 9300K/10247K, paused 62ms, total 62ms
09-28 13:07:03.070: D/dalvikvm(3562): Not late-enabling CheckJNI (already on)
09-28 13:07:03.085: I/ActivityManager(1650): Start proc com.example.hellojni for activity com.example.hellojni/.HelloJni: pid=3562 uid=10052 gids={1015, 1028}
09-28 13:07:03.101: I/dalvikvm(3562): Turning on JNI …