安卓获取线程id

错误的做法：

1     @Override
2     public void onCreate() {
3         mContext = getApplicationContext();
4         mHandler = new Handler();
5         mMainThreadid = android.os.Process.myPid();
6         super.onCreate();
7     }

正确的做法：

1     @Override
2     public void onCreate() {
3         mContext = getApplicationContext();
4         mHandler = new Handler();
5         mMainThreadid = android.os.Process.myTid();
6         super.onCreate();
7     }