갤럭시 s 시리즈 경로 오류 발생

Question

 

String root = Environment.getExternalStorageDirectory().toString();

file = new File( root + "/Sample/Input" );

list = file.listFiles();

이런식으로 이미지 불러오는데 다른 폰은 다 되는데 갤럭시 S 시리즈만 안되네요..(S노트 등등)

갤럭시 넥서스에서는 되는데 말이죠..

 

getAbsolutePath나 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) 을 통해서 DCIM에 Sample 폴더를 넣는 방식 등 다양하게 시도해봤지만.. 이유를 알 수 없이 경로 반환을 하지 못하는 것 같습니다.

다른 폰에서는 다 되는데 왜 갤럭시에서만 안되는지...

코드는 다음과 같습니다.

 

public class MainActivity extends Activity {

    private File file;

    File list[];

 

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

 

        String root = Environment.getExternalStorageDirectory().toString();

 

        file = new File( root + "/Sample/Input" );

        list = file.listFiles();

 

        Toast.makeText(getBaseContext(), "" + list.length, Toast.LENGTH_SHORT).show();

   }

}

 

 

로그캣 메세지는 아래와 같습니다.

 

05-20 22:22:26.016  16677-16677/com.example.hyub.imc D/ResourcesManager﹕ creating new AssetManager and set to /data/app/com.example.hyub.imc-2/base.apk

05-20 22:22:26.076  16677-16677/com.example.hyub.imc V/BitmapFactory﹕ DecodeImagePath(decodeResourceStream3) : res/drawable/android_author.png

05-20 22:22:26.076  16677-16677/com.example.hyub.imc V/BitmapFactory﹕ DecodeImagePath(decodeResourceStream3) : res/drawable/ggg.png

05-20 22:22:26.106  16677-16677/com.example.hyub.imc V/BitmapFactory﹕ DecodeImagePath(decodeResourceStream3) : res/drawable/android_version.png

05-20 22:22:26.106  16677-16677/com.example.hyub.imc E/File﹕ fail readDirectory() errno=13

05-20 22:22:26.116  16677-16677/com.example.hyub.imc D/AndroidRuntime﹕ Shutting down VM

05-20 22:22:26.116  16677-16677/com.example.hyub.imc E/AndroidRuntime﹕ FATAL EXCEPTION: main

    Process: com.example.hyub.imc, PID: 16677

    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.hyub.imc/com.example.hyub.imc.MainActivity}: java.lang.NullPointerException: Attempt to get length of null array

            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2658)

            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2723)

            at android.app.ActivityThread.access$900(ActivityThread.java:172)

            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1422)

            at android.os.Handler.dispatchMessage(Handler.java:102)

            at android.os.Looper.loop(Looper.java:145)

            at android.app.ActivityThread.main(ActivityThread.java:5832)

            at java.lang.reflect.Method.invoke(Native Method)

            at java.lang.reflect.Method.invoke(Method.java:372)

            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)

            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)

     Caused by: java.lang.NullPointerException: Attempt to get length of null array

            at com.example.hyub.imc.MainActivity.onCreate(MainActivity.java:93)

            at android.app.Activity.performCreate(Activity.java:6221)

            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)

            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2611)

            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2723)

            at android.app.ActivityThread.access$900(ActivityThread.java:172)

            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1422)

            at android.os.Handler.dispatchMessage(Handler.java:102)

            at android.os.Looper.loop(Looper.java:145)

            at android.app.ActivityThread.main(ActivityThread.java:5832)

            at java.lang.reflect.Method.invoke(Native Method)

            at java.lang.reflect.Method.invoke(Method.java:372)

            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)

            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)

05-20 22:22:29.696  16677-16677/com.example.hyub.imc I/Process﹕ Sending signal. PID: 16677 SIG: 9

 

 

 

 

Comments

ㅠㅠ..도와주십시오..간절합니다.

Answer 1

테스트하고 있는 단말에 외부 저장소가 존재하지 않는것 아닌가요?

getExternalStorageState() 메소드로 상태가 어떤값으로 넘어오는지 체크해보세여

Answer 2

http://developer.android.com/reference/java/io/File.html#listFiles%28%29