Android不被kill的Service与卸载之后跳转出反馈页面

最近看到很多android应用卸载之后，都会弹出一个网页来填写反馈。

参考了http://www.cnblogs.com/zealotrouge/archive/2013/09/24/3182617.html上的方法，我也做了一个。现把代码展示出来。

每次接收到进程中断的消息时，父进程会通过handler通知到子进程，在子进程1中fork一个子进程2，子进程2会sleep1秒，1秒过后判断data/data/下的数据是否存在，从而区分是被其他安全软件kill掉了还是被卸载了。

由于某些手机会直接kill掉子进程1，所以才在子进程1中再fork出子进程2。

<pre name="code" class="java">#include "apkObserver.h"
#ifdef __cplusplus
extern "C"
{
#endif

static jboolean isCopy = JNI_TRUE;
static char* rtn;
static char* url;
static char* action;
static jboolean isAvailable;
static jstring s_Searial;
static int ok = -1;
static const char OBSERVER_DIR[] = "/data/data/com.xxx.xxx";

void handler(int signo) {
if (-1 != ok) {
pid_t pid;
pid = fork();
if (0 == pid) {
LOG_INFO("Jimmy", "FORK");
sleep(1);
int lockFileDescriptor = open(OBSERVER_DIR, O_RDONLY);
if (lockFileDescriptor == -1) {
LOG_INFO("Jimmy", "EXIT");
//已被卸载，跳出反馈页面
if (isAvailable) {
if (s_Searial == NULL) {
execlp("am", "am", "start", "-n", action, "-a",
"android.intent.action.VIEW", "-d", url,
(char *) NULL);
} else {
execlp("am", "am", "start", "--user", rtn, "-a",
"android.intent.action.VIEW", "-n", action, "-d",
url, (char *) NULL);
}
} else {
if (s_Searial == NULL) {
execlp("am", "am", "start", "-a",
"android.intent.action.VIEW", "-d", url,
(char *) NULL);
} else {
execlp("am", "am", "start", "--user", rtn, "-a",
"android.intent.action.VIEW", "-d", url,
(char *) NULL);
}
}
}else{
LOG_INFO("Jimmy", "RESTART");
//发送intent把service重新启动起来
if (s_Searial == NULL) {
execlp("am", "am", "startservice", "-n",
"com.xxx.xxx/com.xxx.service.xxx",
(char *) NULL);
} else {
execlp("am", "am", "startservice", "--user", rtn, "-n",
"com.xxx.xxx/com.xxx.service.xxx",
(char *) NULL);
}

}
}else if(pid < 0){
LOG_INFO("Jimmy", "FORK ERROR");
exit(-1);
}else{
exit(0);
}
}
}

JNIEXPORT
int JNICALL
Java_com_xxx_xxx_MyApkObserver_init(JNIEnv *env, jobject obj,
jstring userSerial, jstring intentURL, jboolean isAvail,
jstring intentAction) {
s_Searial = userSerial;
isAvailable = isAvail;
if (userSerial != NULL) {
rtn = (*env)->GetStringUTFChars(env, userSerial, &isCopy);
}
if (intentURL != NULL) {
url = (*env)->GetStringUTFChars(env, intentURL, &isCopy);
}
if (isAvail && intentAction != NULL) {
action = (*env)->GetStringUTFChars(env, intentAction, &isCopy);
}
pid_t pp = getpid();
pid_t pid;
pid = fork();
if (0 == pid) {
signal(SIGCHLD, handler);
ptrace(PTRACE_ATTACH, pp, NULL, NULL);
wait(NULL);
ptrace(PTRACE_CONT, pp, NULL, NULL);
ok = 1;
pause();
}else if(pid < 0){
LOG_INFO("Jimmy", "MAIN FORK ERROR");
exit(-1);
}

}

#ifdef __cplusplus
}
#endif