Intent - 액티비티 호출(실행)

실습 테스트 환경 OS : Mac OS 10.x, Ubuntu 12.04, Windows XP Eclipse : Android Developer Tools Build: v22.0.5-757759 Project Build Target : Android 4.12 API Level 16 Emulator API Level : 본문 참조

[step1] File -> New -> Project -> Android Application Project

[step2] res -> values -> strings.xml

※ 프로젝트의 문자열은 리소스화(strings.xml)하여 사용하는 것이 원칙이나 예제파일에선 편의상 리터럴 사용

[step3] res -> layout -> activity_main.xml

1. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
2. android:layout_width="fill_parent"
3. android:layout_height="fill_parent"
4. android:orientation="vertical" >
6. <Button
7. android:id="@+id/button1"
8. android:layout_width="fill_parent"
9. android:layout_height="wrap_content"
10. android:text="액션 호출 Intent(암시적 호출)" />
12. <Button
13. android:id="@+id/button2"
14. android:layout_width="fill_parent"
15. android:layout_height="wrap_content"
16. android:text="액티비티 호출 Intent(명시적 호출)" />
18. <Button
19. android:id="@+id/button3"
20. android:layout_width="fill_parent"
21. android:layout_height="wrap_content"
22. android:text="호출시 값 전달 Intent" />
24. <Button
25. android:id="@+id/button4"
26. android:layout_width="fill_parent"
27. android:layout_height="wrap_content"
28. android:text="호출 후 값 받아오는 Intent" />
30. </LinearLayout>

[step4] res -> layout -> activity_sub.xml

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. android:layout_width="match_parent"
4. android:layout_height="match_parent"
5. android:orientation="vertical" >
7. <TextView
8. android:id="@+id/textView1"
9. android:layout_width="fill_parent"
10. android:layout_height="wrap_content"
11. android:text="SubActivity" />
13. <Button
14. android:id="@+id/response"
15. android:layout_width="fill_parent"
16. android:layout_height="wrap_content"
17. android:text="응답하기" />
19. </LinearLayout>

[step5] src -> package -> MainActivity.java

1. package zeroday.intent_test;
3. import android.app.Activity;
4. import android.content.Intent;
5. import android.net.Uri;
6. import android.os.Bundle;
7. import android.util.Log;
8. import android.view.View;
9. import android.widget.Button;
10. import android.widget.Toast;
12. public class MainActivity extends Activity {
13. public static final int REQUEST_CODE = 1;
14. private Button button1, button2, button3, button4;
16. @Override
17. protected void onCreate(Bundle savedInstanceState) {
18. super.onCreate(savedInstanceState);
19. setContentView(R.layout.activity_main);
21. // findViewById()
22. button1 = (Button)findViewById(R.id.button1);
23. button2 = (Button)findViewById(R.id.button2);
24. button3 = (Button)findViewById(R.id.button3);
25. button4 = (Button)findViewById(R.id.button4);
27. // 액션 호출 Intent(암시적 호출)
28. button1.setOnClickListener(new View.OnClickListener() {
29. @Override
30. public void onClick(View v) {
31. Uri uri = Uri.parse("http://cafe.naver.com/jjdev");
32. Intent intent = new Intent(Intent.ACTION_VIEW, uri);
33. // Uri uri = Uri.parse("tel:01012345678");
34. // Intent intent = new Intent(Intent.ACTION_DIAL, uri);
35. startActivity(intent);
36. }
37. });
39. // 액티비티 호출 Intent(명시적 호출)
40. button2.setOnClickListener(new View.OnClickListener() {
41. @Override
42. public void onClick(View v) {
43. Intent intent = new Intent(MainActivity.this, SubActivity.class);
44. startActivity(intent);
45. }
46. });
48. // 호출시 값 전달 Intent
49. button3.setOnClickListener(new View.OnClickListener() {
50. @Override
51. public void onClick(View v) {
52. Intent intent = new Intent(MainActivity.this, SubActivity.class);
53. intent.putExtra("name", "zeroDay");
54. startActivity(intent);
55. }
56. });
58. // 호출 후 값 받아오는 Intent -> 응답이 있으면 onActivityResult 메서드를 콜백
59. button4.setOnClickListener(new View.OnClickListener() {
60. @Override
61. public void onClick(View v) {
62. Intent intent = new Intent(MainActivity.this, SubActivity.class);
63. startActivityForResult(intent , REQUEST_CODE); // RESULT_CODE = 1 는 MainActivity final 변수
65. }
66. });
67. }
69. // 인텐트 호출 후 응답값이 있으면 콜백
70. @Override
71. protected void onActivityResult(int requestCode, int resultCode, Intent data){
72. super.onActivityResult(requestCode, resultCode, data);
74. Log.d("intent_test", "resultCode:"+resultCode);
75. Log.d("intent_test", "requestCode:"+requestCode);
77. if(resultCode == Activity.RESULT_OK){
78. if(requestCode == this.REQUEST_CODE){
79. Toast.makeText(this,
80. data.getStringExtra("result"),
81. Toast.LENGTH_LONG).show();
82. }
83. }
84. }
85. }

- 코드설명

[step6] src -> package -> SubActivity.java

1. package zeroday.intent_test;
3. import android.app.Activity;
4. import android.content.Intent;
5. import android.os.Bundle;
6. import android.view.View;
7. import android.widget.Button;
8. import android.widget.Toast;
10. public class SubActivity extends Activity {
11. Button response;
13. @Override
14. protected void onCreate(Bundle savedInstanceState) {
15. super.onCreate(savedInstanceState);
16. setContentView(R.layout.activity_sub);
18. Intent intent = getIntent();
19. Toast.makeText(this,
20. "NAME:"+intent.getStringExtra("name"),
21. Toast.LENGTH_LONG).show();
23. response = (Button)findViewById(R.id.response);
25. response.setOnClickListener(new View.OnClickListener() {
26. @Override
27. public void onClick(View v) {
28. Intent responseIntent = new Intent();
29. responseIntent.putExtra("result", "SubActivity로 부터 받은 값");
30. setResult(Activity.RESULT_OK, responseIntent);
31. finish();
32. }
33. });
34. }
35. }

- 코드설명

[step5] AndroidManifest.xml

1. <?xml version="1.0" encoding="utf-8"?>
2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"
3. package="zeroday.intent_test"
4. android:versionCode="1"
5. android:versionName="1.0" >
7. <uses-sdk
8. android:minSdkVersion="8"
9. android:targetSdkVersion="18" />
11. <application
12. android:allowBackup="true"
13. android:icon="@drawable/ic_launcher"
14. android:label="@string/app_name"
15. android:theme="@style/AppTheme" >
16. <activity
17. android:name="zeroday.intent_test.MainActivity"
18. android:label="@string/app_name" >
19. <intent-filter>
20. <action android:name="android.intent.action.MAIN" />
22. <category android:name="android.intent.category.LAUNCHER" />
23. </intent-filter>
24. </activity>
25. <activity
26. android:name="zeroday.intent_test.SubActivity"
27. android:label="SubActivity" >
28. </activity>
29. </application>
31. </manifest>

[step6] 실행