Crash when setCacheEnabled(..) is set to true

[braj008]

When I load app with setCacheEnabled(..) to true, its crashing at below method

  private void addBitmapToMemoryCache( String key, Bitmap bitmap ) {        
    if ( getBitmapFromMemoryCache( key ) == null ) {
    // crashing here
        memoryCache.put( key, bitmap );
    }
}

Here, both key and bitmap are null. May be some null check should work.

[klattimer]

If you're seeing this you're probably getting out of memory errors first, if your app is memory intensive then you may want to try adding largeHeap to the android manifest. I had this problem caused by loading up an apk extension file which required the zip decompressor in memory, thus leading to an oom error and then to this.

I think a simple null check here would help too.

[braj008]

I am sure it's not about OOM error. Logcat message clearly shows its a NullPointerException as below

08-23 13:08:22.172: E/AndroidRuntime(22880): FATAL EXCEPTION: AsyncTask
08-23 13:08:22.172: E/AndroidRuntime(22880): java.lang.RuntimeException: An error occured while executing doInBackground()
08-23 13:08:22.172: E/AndroidRuntime(22880): at com.qozix.os.AsyncTask$3.done(AsyncTask.java:276)
08-23 13:08:22.172: E/AndroidRuntime(22880): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
08-23 13:08:22.172: E/AndroidRuntime(22880): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
08-23 13:08:22.172: E/AndroidRuntime(22880): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
08-23 13:08:22.172: E/AndroidRuntime(22880): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
08-23 13:08:22.172: E/AndroidRuntime(22880): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
08-23 13:08:22.172: E/AndroidRuntime(22880): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
08-23 13:08:22.172: E/AndroidRuntime(22880): at java.lang.Thread.run(Thread.java:856)
08-23 13:08:22.172: E/AndroidRuntime(22880): Caused by: java.lang.NullPointerException: key == null || value == null
08-23 13:08:22.172: E/AndroidRuntime(22880): at android.support.v4.util.LruCache.put(LruCache.java:117)
08-23 13:08:22.172: E/AndroidRuntime(22880): at com.qozix.tileview.tiles.TileCache.addBitmapToMemoryCache(TileCache.java:117)
08-23 13:08:22.172: E/AndroidRuntime(22880): at com.qozix.tileview.tiles.TileCache.addBitmap(TileCache.java:72)
08-23 13:08:22.172: E/AndroidRuntime(22880): at com.qozix.tileview.tiles.Tile.decode(Tile.java:75)
08-23 13:08:22.172: E/AndroidRuntime(22880): at com.qozix.tileview.tiles.TileManager.decodeIndividualTile(TileManager.java:308)
08-23 13:08:22.172: E/AndroidRuntime(22880): at com.qozix.tileview.tiles.TileRenderTask.doInBackground(TileRenderTask.java:51)
08-23 13:08:22.172: E/AndroidRuntime(22880): at com.qozix.tileview.tiles.TileRenderTask.doInBackground(TileRenderTask.java:1)
08-23 13:08:22.172: E/AndroidRuntime(22880): at com.qozix.os.AsyncTask$2.call(AsyncTask.java:262)
08-23 13:08:22.172: E/AndroidRuntime(22880): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
08-23 13:08:22.172: E/AndroidRuntime(22880): ... 4 more

[moagrius]

Thanks for the note - I'll take a look as soon as I have some time - I probably just missed something when migrating. If you find a fix before then please post.

[yolapop]

anyone found the fix?

Thx b4

[moagrius]

I just tried and am unable to reproduce - it works fine for me. I suspect there's probably a bad file request (perhaps the result over overly-aggressive intersection detection, which was slightly modified from the previous version).

If either of you @yolapop or @braj008 want to post a problem app somewhere, I'd be interested in taking a look / debugging - otherwise I'd suggest trying the null checks mentioned earlier:

private void addBitmapToMemoryCache( String key, Bitmap bitmap ) {        
    if ( key == null || bitmap == null ) {
        return;
    }
    if ( getBitmapFromMemoryCache( key ) == null ) {
    // crashing here
        memoryCache.put( key, bitmap );
    }

If that works, post back and I'll update the repo.

Thanks

[yolapop]

Worked for me 👯

[moagrius]

cool - I've committed the change as well. will leave issue open for a while in case anyone wants to post an app for debug

[braj008]

Above mentioned solution is enough to solve the problem. I have been using following solution.

private void addBitmapToMemoryCache( String key, Bitmap bitmap ) {

    if ( getBitmapFromMemoryCache( key ) == null && bitmap != null ) {
        memoryCache.put( key, bitmap );
    }
} 

[Tristus1er]

I would better suggest this fix:

In: DetailLevel in getIntersections function:

Replace

        int startingRow = (int) Math.floor( viewport.top / offsetHeight );
        int endingRow = (int) Math.ceil( viewport.bottom / offsetHeight );
        int startingColumn = (int) Math.floor( viewport.left / offsetWidth );
        int endingColumn = (int) Math.ceil( viewport.right / offsetWidth );

By:

        int startingRow = (int) Math.floor( viewport.top / offsetHeight );
        int endingRow = (int) Math.ceil( viewport.bottom / offsetHeight ) - 1;
        int startingColumn = (int) Math.floor( viewport.left / offsetWidth );
        int endingColumn = (int) Math.ceil( viewport.right / offsetWidth ) - 1;

As tailes are from 0 to n

[moagrius]

awesome, big thanks - i'll try this out soon and if it works consistently i'll post a new commit

[braj008]

@Tristus1er solution worked. Shall I close the issue?

[moagrius]

@braj008 i'll leave it open as a reminder until i test and commit the patch. thanks

[moagrius]

updated in the latest release