Nativescript doInBackground抛出并导致OutOfMemory错误

时间：2016-09-02 13:26:18

标签： android performance error-handling out-of-memory nativescript

我是nativescript的新手，并且开发了几个月的程序。我得到了同样的错误，我正在使用radList视图和Web图像缓存插件。我们得到了一个API发送产品及其图像和图像约500kb。我正在从他们的类别和类别制作标签我正在为每个类别制作一个列表视图并列出其中的产品。我的代码就是这样;

var tabView = page.getViewById("tabViewContainer"); var meal_list = config.meal_list; meal_list.forEach(function (item) { var items = new observable_array_1.ObservableArray(); item.meal_list.forEach(function (item2) { items.push(new DataItemWithImage(item2.meal_id, item2.meal_name, item2.meal_cost,"http://sezginserpen.com.tr/test_image/" + item2.meal_id + ".jpg")); // items.push(new DataItemWithImage(item2.meal_id, item2.meal_name, item2.meal_cost,"http://pngimg.com/upload/pizza_PNG7132.png")); }); var wrapLayout = new wrapLayoutModule.WrapLayout(); var radListView = new listViewModule.RadListView(); var layoutBase = new listViewModule.ListViewGridLayout(); layoutBase.scrollDirection = "Vertical"; layoutBase.spanCount = 2; wrapLayout.className = "item"; wrapLayout.orientation = "horizontal"; radListView.listViewLayout = layoutBase; radListView.items = items;//<IC:WebImage stretch="fill" height="250" class="my-image-1" src="{{ image }}></IC:WebImage> radListView.itemTemplate = '<Border xmlns:IC="nativescript-web-image-cache" borderWidth="0.5" borderColor="lightgray"><stack-layout orientation="vertical" height="250" ><IC:WebImage horizontalAlignment="center" src="{{ image }}"></IC:WebImage><stack-layout width="100%" height="50%"> <label id="product_id_label" text="{{ id }}" style="visibility: collapsed" /><label class="align_center product_label" textWrap="true" text="{{ itemName }}" /> <label class="align_center product_label" textWrap="true" style="color:lightgray" text="{{ itemDescription }}" /> <Border borderWidth="1" borderColor="green" borderRadius="2" style="height:22%;width:95%"> <label tap="add_to_basket" class="align_center" style="background-color:white;color:green;" text="Sepete Ekle" /> </Border> </stack-layout> </stack-layout> </Border>'; wrapLayout.addChild(radListView); var tabViewItem = new tabViewModule.TabViewItem(); tabViewItem.title = item.category.category_name, tabViewItem.view = wrapLayout; var tabView = page.getViewById("tabViewContainer"); tabView.items.push(tabViewItem); });

AND XML like;

<drawer:rad-side-drawer id="drawer"> <drawer:rad-side-drawer.mainContent> <!-- Home page contents --> <stack-layout loaded="contentLoaded"> <TabView id="tabViewContainer" selectedIndex="{{ index }}" selectedColor="#d43b2b" selectedIndexChanged="change" tabsBackgroundColor="#ffffff" > <TabView.items> </TabView.items> </TabView> </stack-layout> </drawer:rad-side-drawer.mainContent> <drawer:rad-side-drawer.drawerContent> <widgets:drawer-content /> </drawer:rad-side-drawer.drawerContent> </drawer:rad-side-drawer>

有什么理由导致这个？我正在使用ımagecache但每次都有这个。我的Stack Trace1之一：

                         java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:309)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)Caused by: java.lang.OutOfMemoryError: Failed to allocate a 14745612 byte allocation with 12939040 free bytes and 12MB until OOM
at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
at android.graphics.BitmapFactory.nativeDecodeByteArray(Native Method)
at android.graphics.BitmapFactory.decodeByteArray(BitmapFactory.java:763)
at org.nativescript.widgets.Async$Http$RequestResult.readResponseStream(Async.java:225)
at org.nativescript.widgets.Async$Http$HttpRequestTask.doInBackground(Async.java:303)
at org.nativescript.widgets.Async$Http$HttpRequestTask.doInBackground(Async.java:253)
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
... 3 more

TRACE2：

java.lang.OutOfMemoryError: Failed to allocate a 1508364 byte allocation with 301952 free bytes and 294KB until OOM
at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
at android.graphics.Bitmap.nativeCreate(Native Method)
at android.graphics.Bitmap.createBitmap(Bitmap.java:975)
at android.graphics.Bitmap.createBitmap(Bitmap.java:946)
at android.graphics.Bitmap.createBitmap(Bitmap.java:913)
at com.facebook.imagepipeline.memory.BitmapPool.alloc(BitmapPool.java:55)
at com.facebook.imagepipeline.memory.BitmapPool.alloc(BitmapPool.java:30)
at com.facebook.imagepipeline.memory.BasePool.get(BasePool.java:259)
at com.facebook.imagepipeline.platform.ArtDecoder.decodeStaticImageFromStream(ArtDecoder.java:137)
at com.facebook.imagepipeline.platform.ArtDecoder.decodeFromEncodedImage(ArtDecoder.java:81)
at com.facebook.imagepipeline.decoder.ImageDecoder.decodeStaticImage(ImageDecoder.java:128)
at com.facebook.imagepipeline.decoder.ImageDecoder.decodeImage(ImageDecoder.java:94)
at com.facebook.imagepipeline.producers.DecodeProducer$ProgressiveDecoder.doDecode(DecodeProducer.java:194)
at com.facebook.imagepipeline.producers.DecodeProducer$ProgressiveDecoder.access$200(DecodeProducer.java:97)
at com.facebook.imagepipeline.producers.DecodeProducer$ProgressiveDecoder$1.run(DecodeProducer.java:129)
at com.facebook.imagepipeline.producers.JobScheduler.doJob(JobScheduler.java:207)
at com.facebook.imagepipeline.producers.JobScheduler.access$000(JobScheduler.java:27)
at com.facebook.imagepipeline.producers.JobScheduler$1.run(JobScheduler.java:78)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at com.facebook.imagepipeline.core.PriorityThreadFactory$1.run(PriorityThreadFactory.java:43)
at java.lang.Thread.run(Thread.java:818)

这个是另一个，并没有关于这种类型的错误，但我也得到了这个：

                         java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.bringToFront()' on a null object reference
at com.telerik.android.primitives.widget.sidedrawer.transitions.DrawerTransitionBase.setProgress(DrawerTransitionBase.java:77)
at com.telerik.android.primitives.widget.sidedrawer.transitions.DrawerTransitionBase.onEnded(DrawerTransitionBase.java:226)
at com.telerik.android.primitives.widget.sidedrawer.transitions.DrawerTransitionBase.run(DrawerTransitionBase.java:221)
at android.view.ViewPropertyAnimator$AnimatorEventListener.onAnimationEnd(ViewPropertyAnimator.java:1119)
at android.animation.ValueAnimator.endAnimation(ValueAnimator.java:1239)
at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:766)
at android.animation.ValueAnimator$AnimationHandler$1.run(ValueAnimator.java:801)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:920)
at android.view.Choreographer.doCallbacks(Choreographer.java:695)
at android.view.Choreographer.doFrame(Choreographer.java:628)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:906)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7229)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

关于如何捕捉这类错误的任何想法？

感谢您的帮助。

1 个答案:

答案 0 :(得分：0)

下面附带的示例显示了如何从iOS和Android的NativeScirpt中删除TabView中的选项卡。

主page.xml 

LinearGradient linearGradient = new LinearGradient(20,30,40,50, new int[]    {Color.parseColor("#00a8d9"), Color.parseColor("#223595"), Color.parseColor("#f1328f"), Color.parseColor("#ee3031"), Color.parseColor("#f9e63a"), Color.parseColor("#009958")},new float[]{0,0,0,0,0,0},
    Shader.TileMode.REPEAT);
    textView.getPaint().setShader(linearGradient);

主page.ts 

<Page xmlns="http://schemas.nativescript.org/tns.xsd" navigatingTo="navigatingTo">
  <TabView id="tabViewContainer" loaded="tabviewLoaded">
      <TabView.items>
          <TabViewItem title="">
              <TabViewItem.view>
                  <Label text="This is Label in Tab 1" />
              </TabViewItem.view>
          </TabViewItem>
          <TabViewItem title="">
              <TabViewItem.view>
                  <Label text="This is Label in Tab 2" />
              </TabViewItem.view>
          </TabViewItem>
      </TabView.items>
  </TabView>
</Page>

主page.js 

  import { EventData } from "data/observable";
    import { Page } from "ui/page";
    import {TabView} from "ui/tab-view";
    import {isAndroid, isIOS} from "platform"



    export function tabviewLoaded(args:EventData){

        var tabview =<any> args.object;

         if(isAndroid){
            var tabViewgrid = tabview._grid;
            console.dump(tabViewgrid.removeViewAt(0));
         }

         if(isIOS){
            tabview._ios.tabBar.hidden = true;
         }
    }
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