Android Life Cycle Issues

Troubleshooting android
1

I been playing around with a test app and must say I am very impressed so far. While playing around trying to learn the engine, I noticed some issues with handling the life cycle events.


  1. When I hit the home button and then resume the app, the game would resume correctly. However, when I added a picture to the guiNode, when I resumed the game I recevied the following:



    09-13 20:46:35.124: ERROR/AndroidHarness(12672): java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@4065af78

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): SEVERE AndroidHarness 8:46:35 PM Exception thrown in Thread[GLThread 9,5,main]: at android.graphics.Canvas.throwIfRecycled(955)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at android.graphics.Canvas.drawBitmap(1012)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at android.graphics.Bitmap.createBitmap(492)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at android.graphics.Bitmap.createScaledBitmap(379)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.android.TextureUtil.uploadTextureBitmap(95)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.android.TextureUtil.uploadTexture(123)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.android.OGLESShaderRenderer.updateTexImageData(1946)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.android.OGLESShaderRenderer.setTexture(1981)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.material.MatParamTexture.apply(46)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.material.Material.render(997)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.RenderManager.renderGeometry(656)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.queue.RenderQueue.renderGeometryList(301)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.queue.RenderQueue.renderQueue(354)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.RenderManager.renderViewPortQueues(918)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.RenderManager.flushQueue(849)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.RenderManager.renderViewPort(1125)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.renderer.RenderManager.render(1173)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.app.SimpleApplication.update(263)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at com.jme3.system.android.OGLESContext.onDrawFrame(418)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at android.opengl.GLSurfaceView$GLThread.guardedRun(1363)

    09-13 20:46:35.140: ERROR/AndroidHarness(12672): at android.opengl.GLSurfaceView$GLThread.run(1118)



    While searching through the jme3 source code for android, I found that OGLESShaderRenderer.setTexture had some commented-out code to handle recycled images. When I uncommented the code, the error went away and the games would resume correctly.



    Is there a reason why this code was commented-out?


  2. When the orientation mode in main game class (the class I have that extends AndroidHarness) is set to SCREEN_ORIENTATION_SENSOR, the game restarts when the phone is rotated and the orientation changes. I tried to figure out if there was a way to make the game pause and resume when the orientation changes, but I’m afraid that might be beyond what I understand about jme.



    Is there a way to make the game pause/resume when the orientation changes instead of restarting the game?
2

Hi



I just checked the simple textured demo - send it to the background with the home key - do some stuff - go back to beta1 demo:

It works - i remember to have fixed the recycled bitmap issue - thats why the code in the renderer is commented out.



But i didnt try it with a guiNode - i only tested it with normal textures.



Could you please post a simple test case, so im faster in reproducing it, because im rather occupied currently with a new job.

3

While creating the test case for you, I found out that using an image from the test-data jar file (Interfaces/icons/SmartMonkey128.png) does not have the issue while using my own picture from the assets directory does have the problem. I left both in for you below. When the app first displays, both pictures show correctly. After I hit the home key and then go back, I get the issue, but only if the second picture (the only from the assets directory) is used.



Hope this helps.





[java]

package com.interstatewebgroup.jmonkeytutorials;



import android.util.Log;



import com.jme3.app.SimpleApplication;

import com.jme3.ui.Picture;



public class RecycleTestGame extends SimpleApplication {



private String TAG = "RecycleTestGame";



private float iconWidth=128;

private float iconHeight = 128;

private float iconLocX = 0;

private float iconLocY = 0;



@Override

public void simpleInitApp() {

{

Picture pic = new Picture("pic");

pic.setImage(assetManager, "Interface/icons/SmartMonkey128.png", true);

iconLocX = settings.getWidth()/2 - iconWidth/2;

iconLocY = settings.getHeight()/2 - iconHeight/2;

pic.setWidth(iconWidth);

pic.setHeight(iconHeight);

pic.setPosition(iconLocX, iconLocY);

int picID = guiNode.attachChild(pic);

Log.d(TAG, "pic " + picID + " Loc: " + iconLocX + ", " + iconLocY);

}

{

Picture pic = new Picture("pic");

pic.setImage(assetManager, "DoubleUpOff.png", true);

iconLocX = 0 + 48;

iconLocY = settings.getHeight()/2 - 48;

pic.setWidth(iconWidth);

pic.setHeight(iconHeight);

pic.setPosition(iconLocX, iconLocY);

int picID = guiNode.attachChild(pic);

Log.d(TAG, "pic " + picID + " Loc: " + iconLocX + ", " + iconLocY);

}



}



@Override

public void simpleUpdate(float tpf) {

}



}

[/java]

4

Forget to add that even when I use pictures from the assests directory, when I add back in the code from OGLESShaderRenderer.setTexture both pictures display fine on the resume.

5

Perhaps your letter case is wrong? Is it “Interface/icons” or “Interface/Icons”?

6

I don’t think it is a path issue. The image from that directory works fine.



@larynx - Were you able to reproduce this?

7

I’m still having frequent issues with gui trying to use recycled bitmaps on resume of the app. If no one has any issues, can it be applied?



[java]

This patch file was generated by NetBeans IDE

Following Index: paths are relative to: D:UserspotterecDocumentsjMonkeyProjectsjME3srcandroidcomjme3rendererandroid

This patch can be applied using context Tools: Patch action on respective folder.

It uses platform neutral UTF-8 encoding and n newlines.

Above lines and this line are ignored by the patching process.

Index: OGLESShaderRenderer.java

— OGLESShaderRenderer.java Base (BASE)

+++ OGLESShaderRenderer.java Locally Modified (Based On LOCAL)

@@ -82,6 +82,8 @@

import android.opengl.GLES11;

import android.opengl.GLES20;

import android.os.Build;

+import com.jme3.asset.TextureKey;

+import com.jme3.system.JmeSystem;

import java.util.ArrayList;



public class OGLESShaderRenderer implements Renderer {

@@ -1973,7 +1975,7 @@

public void setTexture(int unit, Texture tex) {

Image image = tex.getImage();

if (image.isUpdateNeeded()) {

  •        /*<br />

+// /*

Bitmap bmp = (Bitmap)image.getEfficentData();

if (bmp != null)

{

@@ -1985,7 +1987,7 @@

image.setEfficentData( textureReloaded.getImage().getEfficentData());

}

}

  •         */<br />

+// */

updateTexImageData(image, tex.getType(), tex.getMinFilter().usesMipMapLevels());

}





[/java]

8

I am seeing the same issue using Nifty GUI on Android. I am testing on a Motorola Xoom.



I see this crash when I resume the app:



E/AndroidHarness( 1879): java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@408d7908

E/AndroidHarness( 1879): SEVERE AndroidHarness 10:19:35 PM Exception thrown in Thread[GLThread 15,5,main]: at android.graphics.Canvas.throwIfRecycled(1012)

E/AndroidHarness( 1879): at android.graphics.Canvas.drawBitmap(1084)

E/AndroidHarness( 1879): at android.graphics.Bitmap.createBitmap(569)

E/AndroidHarness( 1879): at android.graphics.Bitmap.createScaledBitmap(437)

E/AndroidHarness( 1879): at com.jme3.renderer.android.TextureUtil.uploadTextureBitmap(95)

E/AndroidHarness( 1879): at com.jme3.renderer.android.TextureUtil.uploadTexture(123)

E/AndroidHarness( 1879): at com.jme3.renderer.android.OGLESShaderRenderer.updateTexImageData(1954)

E/AndroidHarness( 1879): at com.jme3.renderer.android.OGLESShaderRenderer.setTexture(1989)

E/AndroidHarness( 1879): at com.jme3.material.MatParamTexture.apply(46)

E/AndroidHarness( 1879): at com.jme3.material.Material.render(1002)

E/AndroidHarness( 1879): at com.jme3.font.BitmapText.render(360)

E/AndroidHarness( 1879): at com.jme3.niftygui.RenderDeviceJme.renderFont(225)

E/AndroidHarness( 1879): at de.lessvoid.nifty.render.NiftyRenderEngineImpl.renderText(258)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.render.TextRenderer.renderLine(291)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.render.TextRenderer.renderLines(192)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.render.TextRenderer.render(173)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.Element.renderElement(599)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.Element.render(584)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.Element.renderInternalChildElements(616)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.Element.renderChildren(609)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.Element.render(578)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.Element.renderInternalChildElements(616)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.Element.renderChildren(609)

E/AndroidHarness( 1879): at de.lessvoid.nifty.elements.Element.render(578)

E/AndroidHarness( 1879): at de.lessvoid.nifty.screen.Screen.renderLayers(313)

E/AndroidHarness( 1879): at de.lessvoid.nifty.Nifty.render(276)

E/AndroidHarness( 1879): at com.jme3.niftygui.NiftyJmeDisplay.postQueue(170)

E/AndroidHarness( 1879): at com.jme3.renderer.RenderManager.renderViewPort(1121)

E/AndroidHarness( 1879): at com.jme3.renderer.RenderManager.render(1167)

E/AndroidHarness( 1879): at com.jme3.app.SimpleApplication.update(266)

E/AndroidHarness( 1879): at com.jme3.system.android.OGLESContext.onDrawFrame(418)

E/AndroidHarness( 1879): at android.opengl.GLSurfaceView$GLThread.guardedRun(1425)

E/AndroidHarness( 1879): at android.opengl.GLSurfaceView$GLThread.run(1180)



I tried the above fix, but my jmonkey built from source had other issues so I went back to the Beta (nightly) release.

9

I finally got this resolved. The problem seems to be that my images were not sized with a power of 2. The original pictures were 48x48 pixels. When I resized the images to 64x64 pixels, the issues with trying to display recycled images on the GUI node when the game resumes went away. Does that make sense?

1 Like
10

@iwgeric Thanks a lot for the work around.



I have the same issue in the rootNode. Resizing the images to pot worked flawlessly.



Regards,

EsKoR.

11

@eskor glad it helped. took me a while to figure that one out.