Problem
The [Titanium.UI.Picker.columns](
http://developer.appcelerator.com/apidoc/mobile/latest/Titanium.UI.Picker.columns-property.html) property causes an exception.
Test case
Ti.UI.backgroundColor = 'white';
var win = Ti.UI.createWindow({
exitOnClose: true,
layout: 'vertical'
});
var fruit = [ 'Bananas', 'Strawberries', 'Mangos', 'Grapes' ];
var color = [ 'red', 'green', 'blue', 'orange' ];
var column1 = Ti.UI.createPickerColumn();
for(var i=0, ilen=fruit.length; i<ilen; i++){
var row = Ti.UI.createPickerRow({
title: fruit[i]
});
column1.addRow(row);
}
var column2 = Ti.UI.createPickerColumn();
for(var i=0, ilen=color.length; i<ilen; i++){
var row = Ti.UI.createPickerRow({
title: color[i]
});
column2.addRow(row);
}
var picker = Ti.UI.createPicker({
top:50,
useSpinner: true,
columns: [column1, column2], // disable this to resolve issue
visibleItems: 3,
selectionIndicator: false
});
// picker.add([column1,column2]); // enable this to resolve issue
win.add(picker);
win.open();
// must be after picker has been displayed
picker.setSelectedRow(0, 2, false);
picker.setSelectedRow(1, 3, false);
Logs
605 AndroidRuntime D >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
605 AndroidRuntime D CheckJNI is ON
605 AndroidRuntime D --- registering native functions ---
60 ActivityManager I Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x
10000000 cmp=com.appcelerator.testing10/.Testing10Activity }
605 AndroidRuntime D Shutting down VM
60 ActivityManager I Start proc com.appcelerator.testing10 for activity com.appcelerator.testing10/.Testing10Activity: pid=61
2 uid=10040 gids={1015, 3003}
605 AndroidRuntime I NOTE: attach of thread 'Binder Thread #3' failed
612 TiApplication I (main) [0,0] checkpoint, app created.
612 TiApplication I (main) [787,787] Titanium 1.8.0.1 (2011/12/22 13:09 fbdc96f)
612 TiFastDev D (main) [189,976] Enabling Fastdev on port 53141
612 TiFastDev D (main) [21,997] sent tokens successfully
612 TiFastDev D (main) [1,998] Fastdev session handshake succesful.
612 TiApplication I (main) [6,1004] Titanium Javascript runtime: v8
612 TiApplication W (main) [166,1170] activity stack is emtpy, unable to get current activity
612 TiRootActivity I (main) [0,0] checkpoint, on root activity create, savedInstanceState: null
612 TiApplication W (main) [281,281] activity stack is emtpy, unable to get current activity
612 TiApplication W (main) [1,282] activity stack is emtpy, unable to get current activity
612 TiApplication W (main) [0,282] activity stack is emtpy, unable to get current activity
612 TiApplication E (KrollRuntimeThread) [1065,1347] APP PROXY: ti.modules.titanium.app.AppModule@44fcbc68
612 TiAssetHelper D Fetching "app.js" with Fastdev...
612 PickerColumnProxy W Unexpected type not added to picker column: ti.modules.titanium.ui.PickerColumnProxy
612 PickerColumnProxy W Unexpected type not added to picker column: ti.modules.titanium.ui.PickerColumnProxy
612 AndroidRuntime D Shutting down VM
612 TiApplication E (main) [946,2293] Sending event: exception on thread: main msg:java.lang.RuntimeException: Unable to sta
rt activity ComponentInfo{com.appcelerator.testing10/com.appcelerator.testing10.Testing10Activity}: java
.lang.NullPointerException; Titanium 1.8.0.1,2011/12/22 13:09,fbdc96f
612 TiApplication E java.lang.RuntimeException: Unable to start activity ComponentInfo{com.appcelerator.testing10/com.appcel
erator.testing10.Testing10Activity}: java.lang.NullPointerException
612 TiApplication E at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
612 TiApplication E at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
612 TiApplication E at android.app.ActivityThread.access$2300(ActivityThread.java:125)
612 TiApplication E at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
612 TiApplication E at android.os.Handler.dispatchMessage(Handler.java:99)
612 TiApplication E at android.os.Looper.loop(Looper.java:123)
612 TiApplication E at android.app.ActivityThread.main(ActivityThread.java:4627)
612 TiApplication E at java.lang.reflect.Method.invokeNative(Native Method)
612 TiApplication E at java.lang.reflect.Method.invoke(Method.java:521)
612 TiApplication E at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
612 TiApplication E at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
612 TiApplication E at dalvik.system.NativeStart.main(Native Method)
612 TiApplication E Caused by: java.lang.NullPointerException
612 TiApplication E at java.util.Arrays$ArrayList.<init>(Arrays.java:49)
612 TiApplication E at java.util.Arrays.asList(Arrays.java:171)
612 TiApplication E at ti.modules.titanium.ui.widget.picker.TextWheelAdapter.<init>(TextWheelAdapter.java:28)
612 TiApplication E at ti.modules.titanium.ui.widget.picker.TiUISpinnerColumn.refreshNativeView(TiUISpinnerColumn.java:180)
612 TiApplication E at ti.modules.titanium.ui.widget.picker.TiUISpinnerColumn.<init>(TiUISpinnerColumn.java:38)
612 TiApplication E at ti.modules.titanium.ui.PickerColumnProxy.createView(PickerColumnProxy.java:219)
612 TiApplication E at org.appcelerator.titanium.proxy.TiViewProxy.handleGetView(TiViewProxy.java:440)
612 TiApplication E at org.appcelerator.titanium.proxy.TiViewProxy.getOrCreateView(TiViewProxy.java:427)
612 TiApplication E at org.appcelerator.titanium.proxy.TiViewProxy.realizeViews(TiViewProxy.java:456)
612 TiApplication E at org.appcelerator.titanium.proxy.TiViewProxy.handleGetView(TiViewProxy.java:441)
612 TiApplication E at org.appcelerator.titanium.proxy.TiViewProxy.getOrCreateView(TiViewProxy.java:427)
612 TiApplication E at org.appcelerator.titanium.proxy.TiViewProxy.handleAdd(TiViewProxy.java:520)
612 TiApplication E at org.appcelerator.titanium.proxy.TiViewProxy.handleMessage(TiViewProxy.java:264)
612 TiApplication E at android.os.Handler.dispatchMessage(Handler.java:95)
612 TiApplication E at org.appcelerator.kroll.common.TiMessenger.dispatchMessage(TiMessenger.java:318)
612 TiApplication E at org.appcelerator.kroll.common.TiMessenger.dispatchPendingMessages(TiMessenger.java:303)
612 TiApplication E at org.appcelerator.kroll.common.TiMessenger$2.getResult(TiMessenger.java:188)
612 TiApplication E at org.appcelerator.kroll.common.TiMessenger.sendBlockingMessage(TiMessenger.java:215)
612 TiApplication E at org.appcelerator.kroll.common.TiMessenger.sendBlockingRuntimeMessage(TiMessenger.java:143)
612 TiApplication E at org.appcelerator.kroll.KrollProxy.fireSyncEvent(KrollProxy.java:417)
612 TiApplication E at org.appcelerator.titanium.TiBaseActivity.onCreate(TiBaseActivity.java:337)
612 TiApplication E at org.appcelerator.titanium.TiLaunchActivity.onCreate(TiLaunchActivity.java:117)
612 TiApplication E at org.appcelerator.titanium.TiRootActivity.onCreate(TiRootActivity.java:46)
612 TiApplication E at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
612 TiApplication E at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
612 TiApplication E ... 11 more
612 AndroidRuntime E FATAL EXCEPTION: main
612 AndroidRuntime E java.lang.RuntimeException: Unable to start activity ComponentInfo{com.appcelerator.testing10/com.appcel
erator.testing10.Testing10Activity}: java.lang.NullPointerException
612 AndroidRuntime E at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
612 AndroidRuntime E at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
612 AndroidRuntime E at android.app.ActivityThread.access$2300(ActivityThread.java:125)
612 AndroidRuntime E at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
612 AndroidRuntime E at android.os.Handler.dispatchMessage(Handler.java:99)
612 AndroidRuntime E at android.os.Looper.loop(Looper.java:123)
612 AndroidRuntime E at android.app.ActivityThread.main(ActivityThread.java:4627)
612 AndroidRuntime E at java.lang.reflect.Method.invokeNative(Native Method)
612 AndroidRuntime E at java.lang.reflect.Method.invoke(Method.java:521)
612 AndroidRuntime E at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
612 AndroidRuntime E at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
612 AndroidRuntime E at dalvik.system.NativeStart.main(Native Method)
612 AndroidRuntime E Caused by: java.lang.NullPointerException
612 AndroidRuntime E at java.util.Arrays$ArrayList.<init>(Arrays.java:49)
612 AndroidRuntime E at java.util.Arrays.asList(Arrays.java:171)
612 AndroidRuntime E at ti.modules.titanium.ui.widget.picker.TextWheelAdapter.<init>(TextWheelAdapter.java:28)
612 AndroidRuntime E at ti.modules.titanium.ui.widget.picker.TiUISpinnerColumn.refreshNativeView(TiUISpinnerColumn.java:180)
612 AndroidRuntime E at ti.modules.titanium.ui.widget.picker.TiUISpinnerColumn.<init>(TiUISpinnerColumn.java:38)
612 AndroidRuntime E at ti.modules.titanium.ui.PickerColumnProxy.createView(PickerColumnProxy.java:219)
612 AndroidRuntime E at org.appcelerator.titanium.proxy.TiViewProxy.handleGetView(TiViewProxy.java:440)
612 AndroidRuntime E at org.appcelerator.titanium.proxy.TiViewProxy.getOrCreateView(TiViewProxy.java:427)
612 AndroidRuntime E at org.appcelerator.titanium.proxy.TiViewProxy.realizeViews(TiViewProxy.java:456)
612 AndroidRuntime E at org.appcelerator.titanium.proxy.TiViewProxy.handleGetView(TiViewProxy.java:441)
612 AndroidRuntime E at org.appcelerator.titanium.proxy.TiViewProxy.getOrCreateView(TiViewProxy.java:427)
612 AndroidRuntime E at org.appcelerator.titanium.proxy.TiViewProxy.handleAdd(TiViewProxy.java:520)
612 AndroidRuntime E at org.appcelerator.titanium.proxy.TiViewProxy.handleMessage(TiViewProxy.java:264)
612 AndroidRuntime E at android.os.Handler.dispatchMessage(Handler.java:95)
612 AndroidRuntime E at org.appcelerator.kroll.common.TiMessenger.dispatchMessage(TiMessenger.java:318)
612 AndroidRuntime E at org.appcelerator.kroll.common.TiMessenger.dispatchPendingMessages(TiMessenger.java:303)
612 AndroidRuntime E at org.appcelerator.kroll.common.TiMessenger$2.getResult(TiMessenger.java:188)
612 AndroidRuntime E at org.appcelerator.kroll.common.TiMessenger.sendBlockingMessage(TiMessenger.java:215)
612 AndroidRuntime E at org.appcelerator.kroll.common.TiMessenger.sendBlockingRuntimeMessage(TiMessenger.java:143)
612 AndroidRuntime E at org.appcelerator.kroll.KrollProxy.fireSyncEvent(KrollProxy.java:417)
612 AndroidRuntime E at org.appcelerator.titanium.TiBaseActivity.onCreate(TiBaseActivity.java:337)
612 AndroidRuntime E at org.appcelerator.titanium.TiLaunchActivity.onCreate(TiLaunchActivity.java:117)
612 AndroidRuntime E at org.appcelerator.titanium.TiRootActivity.onCreate(TiRootActivity.java:46)
612 AndroidRuntime E at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
612 AndroidRuntime E at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
612 AndroidRuntime E ... 11 more
60 ActivityManager W Force finishing activity com.appcelerator.testing10/.Testing10Activity
60 ActivityManager W Force finishing activity com.appcelerator.titanium/org.appcelerator.titanium.TiActivity
60 ActivityManager W Activity pause timeout for HistoryRecord{44f478e0 com.appcelerator.testing10/.Testing10Activity}
329 TiBaseActivity E (main) [150281,528726] Layout cleanup.
60 ActivityManager W Activity destroy timeout for HistoryRecord{44f478e0 com.appcelerator.testing10/.Testing10Activity}
612 Process I Sending signal. PID: 612 SIG: 9
60 ActivityManager I Process com.appcelerator.testing10 (pid 612) has died.
Workaround
Use the
add() method rather than the
columns property (see test case for example)
Not sure why - cannot reproduce now. :/
Closing ticket as invalid.