[TIMOB-1659] (Android) toImage functions blowing up with UI widgets

Calling toImage seems to blow up. I've tried it on buttons and views now and I get the same results. It seems to work fine on iPhone. (iOS 4.0.2 and Titanium Mobile SDK 1.4.1 from GitHub.)

var appDirName = Titanium.Filesystem.applicationDataDirectory;
var imageFile = Titanium.Filesystem.getFile(appDirName, 'image.jpg');

if (!imageFile.exists()) {
    Titanium.API.debug("File " + imageFile.name + " does not exist yet.");
}

var button = Titanium.UI.createButton({
    title:'Gargargar!',
    height:40,
    width:200,
    top:10
});

imageFile.write(button.toImage()); // blows up on Android

if (imageFile.exists()) {
    // Note: Titanium.Filesystem.File.size attribute not mentioned in the API docs
    Titanium.API.debug(imageFile.name + " exists, size: " + imageFile.size);
}

Android stack trace:

D/TiAPI   (  569): (kroll$1) [880,926] File image.jpg does not exist yet.
I/ActivityManager(   67): Displayed activity net.status.tstest/.TstestActivity: 4723 ms (total 4723 ms)
W/TiAnalyticsSvc(  569): (Thread-10) [517,1443] Analytics Service Started
D/AndroidRuntime(  569): Shutting down VM
W/dalvikvm(  569): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
E/TiUncaughtHandler(  569): (main) [123,1566] Sending event: exception on thread: main msg:java.lang.IllegalArgumentException: width and height must be > 0
E/TiUncaughtHandler(  569): java.lang.IllegalArgumentException: width and height must be > 0
E/TiUncaughtHandler(  569):     at android.graphics.Bitmap.nativeCreate(Native Method)
E/TiUncaughtHandler(  569):     at android.graphics.Bitmap.createBitmap(Bitmap.java:468)
E/TiUncaughtHandler(  569):     at org.appcelerator.titanium.util.TiUIHelper.viewToImage(TiUIHelper.java:417)
E/TiUncaughtHandler(  569):     at org.appcelerator.titanium.view.TiUIView.toImage(TiUIView.java:637)
E/TiUncaughtHandler(  569):     at org.appcelerator.titanium.proxy.TiViewProxy.handleToImage(TiViewProxy.java:435)
E/TiUncaughtHandler(  569):     at org.appcelerator.titanium.proxy.TiViewProxy.handleMessage(TiViewProxy.java:139)
E/TiUncaughtHandler(  569):     at android.os.Handler.dispatchMessage(Handler.java:95)
E/TiUncaughtHandler(  569):     at android.os.Looper.loop(Looper.java:123)
E/TiUncaughtHandler(  569):     at android.app.ActivityThread.main(ActivityThread.java:4627)
E/TiUncaughtHandler(  569):     at java.lang.reflect.Method.invokeNative(Native Method)
E/TiUncaughtHandler(  569):     at java.lang.reflect.Method.invoke(Method.java:521)
E/TiUncaughtHandler(  569):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
E/TiUncaughtHandler(  569):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
E/TiUncaughtHandler(  569):     at dalvik.system.NativeStart.main(Native Method)
D/dalvikvm(  569): GC_FOR_MALLOC freed 6846 objects / 392464 bytes in 117ms
D/TiApplication(  569): (main) [195,1761] Analytics Event: type=ti.crash
D/TiApplication(  569):  event=ti.crash
D/TiApplication(  569):  timestamp=2010-08-26T20:45:41.224-0800
D/TiApplication(  569):  mid=9774d56d682e549c
D/TiApplication(  569):  sid=715a773d-1c37-434d-b55d-09008336d89a
D/TiApplication(  569):  aguid=2ac80eec-55c8-4d03-9478-1b6255458ea5
D/TiApplication(  569):  isJSON=true
D/TiApplication(  569):  payload={"value":"thread_namemain\nthread_id1\nerror_msgjava.lang.IllegalArgumentException: width and height must be > 0\n<<<<<<<<<<<<<<< STACK TRACE >>>>>>>>>>>>>>>\nandroid.graphics.Bitmap.nativeCreate(Native Method)\nandroid.graphics.Bitmap.createBitmap(Bitmap.java:468)\norg.appcelerator.titanium.util.TiUIHelper.viewToImage(TiUIHelper.java:417)\norg.appcelerator.titanium.view.TiUIView.toImage(TiUIView.java:637)\norg.appcelerator.titanium.proxy.TiViewProxy.handleToImage(TiViewProxy.java:435)\norg.appcelerator.titanium.proxy.TiViewProxy.handleMessage(TiViewProxy.java:139)\nandroid.os.Handler.dispatchMessage(Handler.java:95)\nandroid.os.Looper.loop(Looper.java:123)\nandroid.app.ActivityThread.main(ActivityThread.java:4627)\njava.lang.reflect.Method.invokeNative(Native Method)\njava.lang.reflect.Method.invoke(Method.java:521)\ncom.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)\ncom.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)\ndalvik.system.NativeStart.main(Native Method)\n"}
E/AndroidRuntime(  569): FATAL EXCEPTION: main
E/AndroidRuntime(  569): java.lang.IllegalArgumentException: width and height must be > 0
E/AndroidRuntime(  569):    at android.graphics.Bitmap.nativeCreate(Native Method)
E/AndroidRuntime(  569):    at android.graphics.Bitmap.createBitmap(Bitmap.java:468)
E/AndroidRuntime(  569):    at org.appcelerator.titanium.util.TiUIHelper.viewToImage(TiUIHelper.java:417)
E/AndroidRuntime(  569):    at org.appcelerator.titanium.view.TiUIView.toImage(TiUIView.java:637)
E/AndroidRuntime(  569):    at org.appcelerator.titanium.proxy.TiViewProxy.handleToImage(TiViewProxy.java:435)
E/AndroidRuntime(  569):    at org.appcelerator.titanium.proxy.TiViewProxy.handleMessage(TiViewProxy.java:139)
E/AndroidRuntime(  569):    at android.os.Handler.dispatchMessage(Handler.java:95)
E/AndroidRuntime(  569):    at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(  569):    at android.app.ActivityThread.main(ActivityThread.java:4627)
E/AndroidRuntime(  569):    at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(  569):    at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime(  569):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
E/AndroidRuntime(  569):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
E/AndroidRuntime(  569):    at dalvik.system.NativeStart.main(Native Method)

Here's what happens on iPhone (also see attached image.jpg).

[DEBUG] File image.jpg does not exist yet.
[DEBUG] image.jpg exists, size: 6311