private void test() {
final ThreadCallBack callBack = new ThreadCallBack() {
@Override
public void onMessage(String s) {
mTextView.setText(s);
}
};

new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(5000L);
} catch (InterruptedException e) {
e.printStackTrace();
}
callBack.onMessage(“This is a Test”);
}
}).start();
}

interface ThreadCallBack {
void onMessage(String message);
}

من تست کردم. این خطا رو داد:
CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.

این نشون میده که onMessage روی ترد ui اجرا نشده. درسته؟