cannot read file: /storage/emulated/0/

axbx...@gmail.com

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Sep 9, 2016, 4:26:40 PM9/9/16

to mapsforge-dev

Hi

i'm develop simple app with mapsforge, but when i run the app, show this error

E/MapFile: cannot read file: /storage/emulated/0/azerbaijan.map

org.mapsforge.map.reader.header.MapFileException: cannot read file: /storage/emulated/0/azerbaijan.map

at org.mapsforge.map.reader.MapFile.<init>(MapFile.java:227)

at org.mapsforge.map.reader.MapFile.<init>(MapFile.java:0)

at com.example.lifemakers.mapsforge.MainActivity.onCreate(MainActivity.java:46)

at android.app.Activity.performCreate(Activity.java:6237)

at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)

at android.app.ActivityThread.-wrap11(ActivityThread.java)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)

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

at android.os.Looper.loop(Looper.java:148)

at android.app.ActivityThread.main(ActivityThread.java:5417)

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

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

09-09 22:57:33.942 3008-3008/com.example.lifemakers.mapsforge E/MapFile: Attempt to invoke virtual method 'void java.io.RandomAccessFile.close()' on a null object reference

java.lang.NullPointerException: Attempt to invoke virtual method 'void java.io.RandomAccessFile.close()' on a null object reference

at org.mapsforge.map.reader.MapFile.closeFile(MapFile.java:288)

at org.mapsforge.map.reader.MapFile.<init>(MapFile.java:243)

at org.mapsforge.map.reader.MapFile.<init>(MapFile.java:0)

at com.example.lifemakers.mapsforge.MainActivity.onCreate(MainActivity.java:46)

at android.app.Activity.performCreate(Activity.java:6237)

at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)

at android.app.ActivityThread.-wrap11(ActivityThread.java)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)

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

at android.os.Looper.loop(Looper.java:148)

at android.app.ActivityThread.main(ActivityThread.java:5417)

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

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

also this one :-

09-09 22:57:33.942 3008-3008/com.example.lifemakers.mapsforge E/AndroidRuntime: FATAL EXCEPTION: main

Process: com.example.lifemakers.mapsforge, PID: 3008

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.lifemakers.mapsforge/com.example.lifemakers.mapsforge.MainActivity}: org.mapsforge.map.reader.header.MapFileException: cannot read file: /storage/emulated/0/azerbaijan.map

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)

at android.app.ActivityThread.-wrap11(ActivityThread.java)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)

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

at android.os.Looper.loop(Looper.java:148)

at android.app.ActivityThread.main(ActivityThread.java:5417)

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

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Caused by: org.mapsforge.map.reader.header.MapFileException: cannot read file: /storage/emulated/0/azerbaijan.map

at org.mapsforge.map.reader.MapFile.<init>(MapFile.java:244)

at org.mapsforge.map.reader.MapFile.<init>(MapFile.java:0)

at com.example.lifemakers.mapsforge.MainActivity.onCreate(MainActivity.java:46)

at android.app.Activity.performCreate(Activity.java:6237)

at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)

at android.app.ActivityThread.-wrap11(ActivityThread.java)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)

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

at android.os.Looper.loop(Looper.java:148)

at android.app.ActivityThread.main(ActivityThread.java:5417)

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

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

i have been tried more and more but i couldn't find solution

plz can anyone help me???

here is my code

and the manifest:-

gradl:-

also i have been pushed the .map file in to sdcard ..

what the solution for this problem ???

Emux

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Sep 10, 2016, 2:45:27 AM9/10/16

to mapsfo...@googlegroups.com

What "targetSdkVersion" have you in your build.gradle ?

Because if it is >22 you need to request permissions at run time (see Android docs).
Or you can use "targetSdkVersion 22" to skip that part.

--
Emux

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axbx...@gmail.com

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Sep 10, 2016, 1:34:01 PM9/10/16

to mapsforge-dev

my targetSdkVersion is 23 .. so how i can do request permissions at run time in my code sir ???

Emux

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Sep 10, 2016, 1:37:01 PM9/10/16

to mapsfo...@googlegroups.com

Well that's more Android related than Mapsforge. :)
I put above the Android documentation link to study.

Also you can have a look in mapsforge-samples-android app using the mapsforge-map-android-extras module, demonstrating an example for how to do it.

--
Emux

axbx...@gmail.com

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Sep 12, 2016, 10:14:46 AM9/12/16

to mapsforge-dev

thanx alot, it works for me

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