Android获取进程名

由于项目中涉及到多进程的原因，需要判断当前所属的进程，因此需要获取进程名，在网上搜罗了好多种获取进程名的方法，试了一下有以下两种能够正确获取当前进程的进程名：

• 利用Linux系统获取进程名

 public static String getCurrentProcessName() {
        FileInputStream in = null;
        try {
            String fn = "/proc/self/cmdline";
            in = new FileInputStream(fn);
            byte[] buffer = new byte[256];
            int len = 0;
            int b;
            while ((b = in.read()) > 0 && len < buffer.length) {
                buffer[len++] = (byte) b;
            }
            if (len > 0) {
                String s = new String(buffer, 0, len, "UTF-8");
                return s;
            }
        } catch (Throwable e) {
            e.printStackTrace();
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return null;
    }

• 利用Android系统获取进程名

   public static String getProcessName(Context cxt) {
        int pid = android.os.Process.myPid();
        ActivityManager am = (ActivityManager) cxt.getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningAppProcessInfo> runningApps = am.getRunningAppProcesses();
        if (runningApps == null) {
            return null;
        }
        for (ActivityManager.RunningAppProcessInfo procInfo : runningApps) {
            if (procInfo.pid == pid) {
                return procInfo.processName;
            }
        }
        return null;
    }

以上这两种方法能够正确获取当前进程名，还有一种通过反射获取进程名的方法，我试了一下，没有成功获取进程名。

   public static String getProcessName(Context cxt) {
        int pid = android.os.Process.myPid();
        ActivityManager am = (ActivityManager) cxt.getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningAppProcessInfo> runningApps = am.getRunningAppProcesses();
        if (runningApps == null) {
            return null;
        }
        for (ActivityManager.RunningAppProcessInfo procInfo : runningApps) {
            if (procInfo.pid == pid) {
                return procInfo.processName;
            }
        }
        return null;
    }