[Android] Android textClock

Android Developer連結

    android:id="@+id/cluster_tc_time"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="100px"
    android:layout_marginTop="47px"
    android:textSize="12sp"
    android:format24Hour="H:mm"
    android:format12Hour="h:mm"
    />

import android.widget.TextClock;
public class MainActivity extends AppCompatActivity {
private TextClock mtc_time = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mtc_time = findViewById(R.id.cluster_tc_time);
    }
}