java - Android build crashes when looping through an 2D array - libGDX -

i point.
i'm working on little game, using libgdx library , have following problem.
everytime i'm trying execute loop:

for (int row = 0; row < currentmapheighttiles; row++) {         (int col = 0; col < 9; col++) {             if (currentmap[row][col] == 4 && (currentmapheight - position.y) >  row * 40 && (currentmapheight - position.y) < (row+1) * 40                     && position.x > col * 40 && position.x < (col+1) * 40) {                 gdx.app.log("wall collision", "found");                 collides = true;             } else if (currentmap[row][col] == 3 && (currentmapheight - position.y) >  row * 40 && (currentmapheight - position.y) < (row+1) * 40                     && position.x > col * 40 && position.x < (col+1) * 40) {                 gdx.app.log("gate collision", "found");                 collides = true;             }         }     } 

my android build crashes. works charm on desktop version, compiles on android, i'm executing it, phone says "my app stopped working".

simplified version of doesn't work well:

for (int row = 0; row < currentmapheighttiles; row++) {         (int col = 0; col < 9; col++) {             if (currentmap[row][col] == 4) {              } else if (currentmap[row][col] == 3) {              }         }     } 

and 1 doesn't anything, iterates through array.

2d array created method:

public int[][] getmap() throws exception {      string line;      scanner scanner = new scanner(new file("data/level_one.txt"));          (int row = 0; row < maph; row++) {             line = scanner.nextline();             string[] rowa = line.split(" ");             (int col = 0; col < 9; col++) {                 levelmap[row][col] = integer.parseint(rowa[col]);             }         }     return levelmap; } 

logs:

    06-03 15:34:42.195    1293-1293/com.mestru.game.android d/dalvikvm﹕ trying load lib /data/app-lib/com.mestru.game.android-1/libgdx.so 0xb1db73c8     06-03 15:34:42.265    1293-1293/com.mestru.game.android d/dalvikvm﹕ added shared lib /data/app-lib/com.mestru.game.android-1/libgdx.so 0xb1db73c8     06-03 15:34:42.265    1293-1293/com.mestru.game.android d/dalvikvm﹕ no jni_onload found in /data/app-lib/com.mestru.game.android-1/libgdx.so 0xb1db73c8, skipping init     06-03 15:34:42.425    1293-1293/com.mestru.game.android d/﹕ hostconnection::get() new host connection established 0xb8466920, tid 1293     06-03 15:34:42.965    1293-1293/com.mestru.game.android i/androidinput﹕ sensor listener setup     06-03 15:34:43.215    1293-1293/com.mestru.game.android w/egl_emulation﹕ eglsurfaceattrib not implemented     06-03 15:34:43.235    1293-1293/com.mestru.game.android d/openglrenderer﹕ enabling debug mode 0     06-03 15:34:43.385    1293-1306/com.mestru.game.android d/﹕ hostconnection::get() new host connection established 0xb85aba30, tid 1306     06-03 15:34:43.425    1293-1306/com.mestru.game.android w/gl2jniview﹕ creating opengl es 2.0 context     06-03 15:34:43.545    1293-1306/com.mestru.game.android d/dalvikvm﹕ trying load lib /data/app-lib/com.mestru.game.android-1/libgdx.so 0xb1db73c8     06-03 15:34:43.545    1293-1306/com.mestru.game.android d/dalvikvm﹕ shared lib '/data/app-lib/com.mestru.game.android-1/libgdx.so' loaded in same cl 0xb1db73c8     06-03 15:34:43.555    1293-1306/com.mestru.game.android i/gl2﹕ initialized 2     06-03 15:34:43.565    1293-1306/com.mestru.game.android i/androidgraphics﹕ ogl renderer: android emulator opengl es translator (amd radeon r9 200 series)     06-03 15:34:43.565    1293-1306/com.mestru.game.android i/androidgraphics﹕ ogl vendor: google (ati technologies inc.)     06-03 15:34:43.575    1293-1306/com.mestru.game.android i/androidgraphics﹕ ogl version: opengl es 2.0 (4.4.13283 compatibility profile context 14.501.1003.0)     06-03 15:34:43.625    1293-1306/com.mestru.game.android i/androidgraphics﹕ ogl extensions: gl_ext_debug_marker gl_oes_egl_image gl_oes_egl_image_external gl_oes_depth24 gl_oes_depth32 gl_oes_element_index_uint gl_oes_texture_float gl_oes_texture_float_linear gl_oes_compressed_paletted_texture gl_oes_compressed_etc1_rgb8_texture gl_oes_depth_texture gl_oes_texture_half_float gl_oes_texture_half_float_linear gl_oes_packed_depth_stencil gl_oes_vertex_half_float gl_oes_texture_npot gl_oes_rgb8_rgba8     06-03 15:34:43.625    1293-1306/com.mestru.game.android e/egl_emulation﹕ [getattribvalue] bad attribute idx     06-03 15:34:43.625    1293-1306/com.mestru.game.android e/egl_emulation﹕ tid 1306: eglgetconfigattrib(605): error 0x3004 (egl_bad_attribute)     06-03 15:34:43.635    1293-1306/com.mestru.game.android e/egl_emulation﹕ [getattribvalue] bad attribute idx     06-03 15:34:43.635    1293-1306/com.mestru.game.android e/egl_emulation﹕ tid 1306: eglgetconfigattrib(605): error 0x3004 (egl_bad_attribute)     06-03 15:34:43.635    1293-1306/com.mestru.game.android i/androidgraphics﹕ framebuffer: (5, 6, 5, 0)     06-03 15:34:43.635    1293-1306/com.mestru.game.android i/androidgraphics﹕ depthbuffer: (16)     06-03 15:34:43.635    1293-1306/com.mestru.game.android i/androidgraphics﹕ stencilbuffer: (0)     06-03 15:34:43.635    1293-1306/com.mestru.game.android i/androidgraphics﹕ samples: (0)     06-03 15:34:43.635    1293-1306/com.mestru.game.android i/androidgraphics﹕ coverage sampling: (false)     06-03 15:34:43.675    1293-1306/com.mestru.game.android i/androidgraphics﹕ managed meshes/app: { }     06-03 15:34:43.675    1293-1306/com.mestru.game.android i/androidgraphics﹕ managed textures/app: { }     06-03 15:34:43.685    1293-1306/com.mestru.game.android i/androidgraphics﹕ managed cubemap/app: { }     06-03 15:34:43.685    1293-1306/com.mestru.game.android i/androidgraphics﹕ managed shaders/app: { }     06-03 15:34:43.685    1293-1306/com.mestru.game.android i/androidgraphics﹕ managed buffers/app: { }     06-03 15:34:43.695    1293-1306/com.mestru.game.android i/mathsgame﹕ created     06-03 15:34:44.185    1293-1306/com.mestru.game.android w/system.err﹕ java.io.filenotfoundexception: /data/level_one.txt: open failed: enoent (no such file or directory)     06-03 15:34:44.185    1293-1306/com.mestru.game.android w/system.err﹕ @ libcore.io.iobridge.open(iobridge.java:409)     06-03 15:34:44.285    1293-1306/com.mestru.game.android w/system.err﹕ @ java.io.fileinputstream.<init>(fileinputstream.java:78)     06-03 15:34:44.285    1293-1306/com.mestru.game.android w/system.err﹕ @ java.util.scanner.<init>(scanner.java:158)     06-03 15:34:44.305    1293-1306/com.mestru.game.android w/system.err﹕ @ java.util.scanner.<init>(scanner.java:138)     06-03 15:34:44.305    1293-1306/com.mestru.game.android w/system.err﹕ @ com.mestru.screens.levels.level_one.getmap(level_one.java:24)     06-03 15:34:44.315    1293-1306/com.mestru.game.android w/system.err﹕ @ com.mestru.gameworld.gameworld.initlevels(gameworld.java:45)     06-03 15:34:44.315    1293-1306/com.mestru.game.android w/system.err﹕ @ com.mestru.gameworld.gameworld.<init>(gameworld.java:35)     06-03 15:34:44.315    1293-1306/com.mestru.game.android w/system.err﹕ @ com.mestru.screens.gamescreen.<init>(gamescreen.java:19)     06-03 15:34:44.425    1293-1306/com.mestru.game.android w/system.err﹕ @ com.mestru.game.mathsgame.create(mathsgame.java:14)     06-03 15:34:44.425    1293-1306/com.mestru.game.android w/system.err﹕ @ com.badlogic.gdx.backends.android.androidgraphics.onsurfacechanged(androidgraphics.java:241)     06-03 15:34:44.435    1293-1306/com.mestru.game.android w/system.err﹕ @ android.opengl.glsurfaceview$glthread.guardedrun(glsurfaceview.java:1512)     06-03 15:34:44.435    1293-1306/com.mestru.game.android w/system.err﹕ @ android.opengl.glsurfaceview$glthread.run(glsurfaceview.java:1240)     06-03 15:34:44.435    1293-1306/com.mestru.game.android w/system.err﹕ caused by: libcore.io.errnoexception: open failed: enoent (no such file or directory)     06-03 15:34:44.435    1293-1306/com.mestru.game.android w/system.err﹕ @ libcore.io.posix.open(native method)     06-03 15:34:44.435    1293-1306/com.mestru.game.android w/system.err﹕ @ libcore.io.blockguardos.open(blockguardos.java:110)     06-03 15:34:44.435    1293-1306/com.mestru.game.android w/system.err﹕ @ libcore.io.iobridge.open(iobridge.java:393)     06-03 15:34:44.435    1293-1306/com.mestru.game.android w/system.err﹕ ... 11 more     06-03 15:34:44.885    1293-1306/com.mestru.game.android d/dalvikvm﹕ gc_for_alloc freed 232k, 9% free 3153k/3452k, paused 50ms, total 53ms     06-03 15:34:46.105    1293-1306/com.mestru.game.android d/dalvikvm﹕ gc_for_alloc freed 393k, 13% free 3253k/3716k, paused 41ms, total 42ms     06-03 15:34:46.525    1293-1306/com.mestru.game.android d/dalvikvm﹕ gc_for_alloc freed 67k, 11% free 3402k/3796k, paused 40ms, total 40ms     06-03 15:34:46.565    1293-1306/com.mestru.game.android i/gamescreen﹕ show called     06-03 15:34:46.565    1293-1306/com.mestru.game.android i/gamescreen﹕ resize called     06-03 15:34:46.565    1293-1306/com.mestru.game.android i/gamescreen﹕ resize called     06-03 15:34:54.915    1293-1306/com.mestru.game.android w/dalvikvm﹕ threadid=11: thread exiting uncaught exception (group=0xb1ad9ba8)     06-03 15:34:54.925    1293-1306/com.mestru.game.android e/androidruntime﹕ fatal exception: glthread 93         process: com.mestru.game.android, pid: 1293         java.lang.nullpointerexception             @ com.mestru.objects.player.checkcollision(player.java:143)             @ com.mestru.objects.player.update(player.java:56)             @ com.mestru.gameworld.gameworld.update_one(gameworld.java:83)             @ com.mestru.gameworld.gameworld.update(gameworld.java:71)             @ com.mestru.screens.gamescreen.render(gamescreen.java:32)             @ com.badlogic.gdx.game.render(game.java:46)             @ com.badlogic.gdx.backends.android.androidgraphics.ondrawframe(androidgraphics.java:422)             @ android.opengl.glsurfaceview$glthread.guardedrun(glsurfaceview.java:1523)             @ android.opengl.glsurfaceview$glthread.run(glsurfaceview.java:1240)     06-03 15:34:58.145    1293-1306/com.mestru.game.android i/process﹕ sending signal. pid: 1293 sig: 9 

so yeah, conclusing - everytime go through array, android build crashes. when i'm trying use try/catch, doesn't check collision @ all. use <3

edit. still can't work :<

edit2. luckily managed make work. i've replaced

 scanner scanner = new scanner(new file("data/level_one.txt")); 

with

filehandle file = gdx.files.internal("data/level_one.txt");  scanner scanner = new scanner(file.readstring()); 

and works charm :)

in line of code thinks 1 problem->

public int[][] getmap() throws exception {      string line;      scanner scanner = new scanner(new file("data/level_one.txt"));          (int row = 0; row < maph; row++) {             line = scanner.nextline();             string[] rowa = line.split(" ");             (int col = 0; col < 9; col++) {                 levelmap[row][col] = integer.parseint(rowa[col]);             }         }     return levelmap; } 

.

scanner scanner = new scanner(new file("data/level_one.txt"));

example:

scanner scanner = new scanner(gdx.files.internal("data/level_one.txt").file()); 

read , implement in code:

https://github.com/libgdx/libgdx/wiki/file-handling#reading-from-a-file

https://github.com/libgdx/libgdx/wiki/file-handling#obtaining-filehandles

maybe affecting in code, hope help, if not notify me , delete response