메뉴버튼 클릭시 class호출관련

Question

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@Override     public boolean onCreateOptionsMenu(Menu menu) {         menu.add("새로고침");         menu.add("캐시삭제");         menu.add("설정"); //20150827 휴대폰정보추가[모델명, 안드로이드버전, 앱버전]         return true;     }       @Override     public boolean onPrepareOptionsMenu(Menu menu) {         return true;     }           @Override     public boolean onOptionsItemSelected(MenuItem item) {         if ("새로고침" == item.getTitle())         {             mWebView.reload();         }                   if ("캐시삭제" == item.getTitle())         {             File cacheDir = context.getCacheDir();             clearCacheFiles(cacheDir);             Toast.makeText(context, "캐시가 삭제 되었습니다", Toast.LENGTH_SHORT).show();         }         if("설정" == item.getTitle())         {                       /*Intent intent = new Intent(MainActivity.this, VersionActivity.class);             intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);             startActivity(intent);*/                           Intent intent = new Intent(MainActivity.this, SettingsActivity.class);             intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);             startActivity(intent);           }                   return true;     }

 

 

 

메뉴 버튼을 누르면 설정 이라는게 나오도록 하는데요

 

설정이라는 메뉴를 눌렀을경우

 

startActivity(intent); 를 실행할때 어플이 종료가 되어 버리는데요..

 

이유가 뭘가요..

 

 

SettingsActivity 이거는 다른 어플에서 사용중인걸 그대로 가져와서 아무 문제가 없을거같은데요...

 

어떤거 살펴 봐야 할가요..?

Answer 1

JAVA 에서 문자 비교는 equals 로 하셔야 합니다.

Comments

그..새로고침이나 캐시삭제도 저렇게해도 정상작동을 하고

다른어플에도 저런식으로 작업을 해두었는데 정상작동한다면

지금 나는 에러가 equals문제는 아니지 않나요..?

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if(item.getTitle().equals("새로고침"))           
        {
            mWebView.reload();
        }
        
//        if ("캐시삭제" == item.getTitle())
        if(item.getTitle().equals("캐시삭제"))
        {
            File cacheDir = context.getCacheDir();
            clearCacheFiles(cacheDir);
            Toast.makeText(context, "캐시가 삭제 되었습니다", Toast.LENGTH_SHORT).show();
        }
//        if("설정" == item.getTitle())
        if(item.getTitle().equals("설정"))
        {           
            /*Intent intent = new Intent(MainActivity.this, VersionActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(intent);*/
           
            Intent intent = new Intent(MainActivity.this, SettingsActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(intent);

        }

이렇게 수정해보았습니다만..
설정을 누르면 어플이 그냥종료됩니다 ㅠㅠ

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로그한번올려보세용...

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if(item.getTitle().equals("설정"))
        {           
            /*Intent intent = new Intent(MainActivity.this, VersionActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(intent);*/
           
            Intent intent = new Intent(MainActivity.this, SettingsActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            Log.e("test","111111111111");
            startActivity(intent);
이렇게하고 설정눌럿을때 나오는 에러로그입니당..


08-28 15:02:27.072: E/test(22538): 111111111111
08-28 15:02:27.102: E/AndroidRuntime(22538): FATAL EXCEPTION: main
08-28 15:02:27.102: E/AndroidRuntime(22538): Process: com.entin.mobileentman, PID: 22538
08-28 15:02:27.102: E/AndroidRuntime(22538): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.entin.mobileentman/com.entin.mobileentman.SettingsActivity}; have you declared this activity in your AndroidManifest.xml?
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1777)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1499)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.app.Activity.startActivityForResult(Activity.java:3942)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.app.Activity.startActivityForResult(Activity.java:3889)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.app.Activity.startActivity(Activity.java:4213)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.app.Activity.startActivity(Activity.java:4181)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at com.entin.mobileentman.MainActivity.onOptionsItemSelected(MainActivity.java:232)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.app.Activity.onMenuItemSelected(Activity.java:3024)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:1199)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:761)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:155)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:904)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:894)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at com.android.internal.view.menu.IconMenuView.invokeItem(IconMenuView.java:468)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at com.android.internal.view.menu.IconMenuItemView.performClick(IconMenuItemView.java:129)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.view.View$PerformClick.run(View.java:20903)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.os.Handler.handleCallback(Handler.java:739)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.os.Handler.dispatchMessage(Handler.java:95)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.os.Looper.loop(Looper.java:145)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at android.app.ActivityThread.main(ActivityThread.java:5942)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at java.lang.reflect.Method.invoke(Native Method)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at java.lang.reflect.Method.invoke(Method.java:372)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
08-28 15:02:27.102: E/AndroidRuntime(22538):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)

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AndroidManifest.xml 에 SettingsActivity 를 등록해주세요

<activity android:name="패키지경로.SettingsActivity" />

그리고 equals 비교하지 않으시면 앱이 죽는걸 떠나서 저 조건문은 의미가 없어요

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android.content.ActivityNotFoundException: Unable to find explicit activity class {com.entin.mobileentman/com.entin.mobileentman.SettingsActivity}; have you declared this activity in your AndroidManifest.xml?
이렇게 친절하게 오류원인을 알려주는데....

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네.. 안드로이드 처음하다보니.. 아무것도 몰랏네요 ㅠㅠ