get list of asset folder

Question

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hi i wanna get list of one dir in asset with this code but every time i get this error:

Java

String path = "file:///android_asset/images/";

 Log.d("Files", "Path: " + path);
 File f = new File(path);


 File file[] = f.listFiles();

 for (int i = 0; i <file.length;i++) {
     Toast.makeText(this,file[i].toString(),Toast.LENGTH_LONG).show();
 }

05-17 13:12:20.255 3301-3301/mohammadi.behnam.telegramsticker E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{mohammadi.behnam.telegramsticker/mohammadi.behnam.telegramsticker.MainActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2295)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
at android.app.ActivityThread.access$700(ActivityThread.java:159)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5419)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at mohammadi.behnam.telegramsticker.MainActivity.onCreate(MainActivity.java:54)
at android.app.Activity.performCreate(Activity.java:5372)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2257)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
            at android.app.ActivityThread.access$700(ActivityThread.java:159)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:176)
            at android.app.ActivityThread.main(ActivityThread.java:5419)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:525)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
            at dalvik.system.NativeStart.main(Native Method)

Posted 16-May-15 22:57pm

Behnam Mohammadi

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Richard MacCutchan · Answer 1 · 2015-05-17T01:35:00

Solution 1

Please do not repost the same question.

Go to http://www.codeproject.com/KB/android/[^], where you will find many articles that explain storage access in Android.

Posted 17-May-15 1:35am

Richard MacCutchan