[안드로이드] 외부 class파일에서 액티비티의 view 콘트롤 호출하기

외부 java class 에서 main activity 의 콘트롤 findViewById 
 
http://www.androidpub.com/428203   

1.package SoundExam.Android;

1.import android.app.Activity;

2.import android.os.Bundle;

3.import android.view.View;

4.import android.widget.Button;

01.public class SoundExamActivity extends Activity {

02./** Called when the activity is first created. */

03.@Override

04.public void onCreate(Bundle savedInstanceState) {

05.super.onCreate(savedInstanceState);

06.setContentView(R.layout.main);       

07.SoundExam.InitExam(this);

08.}

09.}

그리고 여기서 참조하는 SoundExam 클래스는 다음과 같습니다.

1.package SoundExam.Android;

1.public class SoundExam {

2.static Context mMain;

1.public static void InitExam(Context main) {

2.mMain = main;

3.}

1.public static void NextSound() {

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print?

1.((EditText) ((Activity) mMain).findViewById(R.id.txtSound)).setText("Downloaded!");

2.}

3. 

4.

}