android jni方法模拟高频按键点击

其实就是把sendevent的代码放到了jni层，这样速度很快，我用输入法试了一下，如果在android里执行sendevent命令发一个点击命令，从发送到上屏至少是800多ms，如果直接用jni调用也就10ms左右。

</pre><pre name="code" class="cpp">#include <jni.h>#include <errno.h>#include <fcntl.h>#include <linux/input.h>#include <stdint.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/ioctl.h>#include <unistd.h>extern "C" {    JNIEXPORT int JNICALL Java_sogou_test_kpi_TestActivity_sendevent(JNIEnv * env, jobject obj,int argc, jobjectArray strArray);}JNIEXPORT int JNICALL Java_sogou_test_kpi_TestActivity_sendevent(JNIEnv * env,jobject obj,int argc, jobjectArray strArray){jstring jstr;jsize len = argc;char **argv = (char **) malloc(len*sizeof(char *));jsize i=0;for (i=0 ; i<len; i++) {jstr = (jstring)env->GetObjectArrayElement(strArray, i);argv[i] = (char *)env->GetStringUTFChars(jstr, 0);}argc = len;    int fd;    ssize_t ret;    int version;struct input_event event;    if(argc != 5) {    close(fd);//fprintf(stderr, "use: %s device type code value\n", argv[0]);        return 1;    }    fd = open(argv[1], O_RDWR);    if(fd < 0) {    close(fd);//fprintf(stderr, "could not open %s, %s\n", argv[optind], strerror(errno));        return 2;    }    if (ioctl(fd, EVIOCGVERSION, &version)) {    close(fd);//fprintf(stderr, "could not get driver version for %s, %s\n", argv[optind], strerror(errno));        return 3;    }    memset(&event, 0, sizeof(event));    event.type = atoi(argv[2]);    event.code = atoi(argv[3]);    event.value = atoi(argv[4]);    ret = write(fd, &event, sizeof(event));    if(ret < (ssize_t) sizeof(event)) {    close(fd);        //fprintf(stderr, "write event failed, %s\n", strerror(errno));        return -1;    }    close(fd);    return 0;}

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