1.1 Java层

int pid = Binder.getCallingPid();
int uid = Binder.getCallingUid();
String callingApp = mContext.getPackageManager().getNameForUid(uid);

还可通过ActivityManager来跟进进程PID来获取进程名

public String getProcessNanmeByPid(int pid) {
    ActivityManager mActivityManager = (ActivityManager) getContext().getSystemService(Context.ACTIVITY_SERVICE);
    for (ActivityManager.RunningAppProcessInfo appProcess : mActivityManager
            .getRunningAppProcesses()) {
        if (appProcess.pid == pid) {
            return appProcess.processName;
        }
    }
    return null;
}

1.2 C++层

#include <binder/IPCThreadState.h>

int pid = IPCThreadState::self()->getCallingPid();
int uid = IPCThreadState::self()->getCallingUid();

获取进程名(需要有读取proc目录的权限)

static int getprocname(pid_t pid, char *buf, size_t len) {
    char filename[20];
    FILE *f;

    sprintf(filename, "/proc/%d/cmdline", pid);
    f = fopen(filename, "r");
    if (!f) { *buf = '\0'; return 1; }
    if (!fgets(buf, len, f)) { *buf = '\0'; return 2; }
    fclose(f);
    return 0;
}