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9-patch无法正常工作。

androidnine-patch
4

我在Android上使用9-patch png遇到了奇怪的问题。 即使我尝试使用不同的目标（在7和14之间尝试了几个），它已经在Eclipse可视化编辑器中失败了。 错误日志显示消息main.xml：Index: 0，Size: 0 异常原因是：

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.RangeCheck(ArrayList.java:547)
at java.util.ArrayList.get(ArrayList.java:322)
at com.android.ninepatch.NinePatchChunk.draw(NinePatchChunk.java:185)
at com.android.ninepatch.NinePatchChunk.draw(NinePatchChunk.java:101)
at android.graphics.NinePatch_Delegate$1.draw(NinePatch_Delegate.java:219)
at com.android.layoutlib.bridge.impl.GcSnapshot.drawInLayer(GcSnapshot.java:613)
at com.android.layoutlib.bridge.impl.GcSnapshot.draw(GcSnapshot.java:583)
at android.graphics.NinePatch_Delegate.draw(NinePatch_Delegate.java:217)
at android.graphics.NinePatch_Delegate.nativeDraw(NinePatch_Delegate.java:170)
at android.graphics.NinePatch.nativeDraw(NinePatch.java)
at android.graphics.NinePatch.draw(NinePatch.java:120)
at android.graphics.drawable.NinePatchDrawable.draw(NinePatchDrawable.java:189)
at android.view.View.draw(View.java:10865)
at android.view.ViewGroup.drawChild(ViewGroup.java:2899)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2495)
at android.view.ViewGroup.drawChild(ViewGroup.java:2897)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2495)
at android.view.ViewGroup.drawChild(ViewGroup.java:2897)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2495)
at android.view.View.draw(View.java:10883)
at android.view.ViewGroup.drawChild(ViewGroup.java:2899)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2495)
at android.view.ViewGroup.drawChild(ViewGroup.java:2897)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2495)
at android.view.View.draw(View.java:10883)
at android.view.ViewGroup.drawChild(ViewGroup.java:2899)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2495)
at android.view.View.draw(View.java:10883)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.render(RenderSessionImpl.java:505)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:324)
at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:325)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.RenderService.createRenderSession(RenderService.java:372)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.renderWithBridge(GraphicalEditorPart.java:1323)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.recomputeLayout(GraphicalEditorPart.java:1077)
at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.activated(GraphicalEditorPart.java:903)
at com.android.ide.eclipse.adt.internal.editors.layout.LayoutEditor.pageChange(LayoutEditor.java:399)
at org.eclipse.ui.part.MultiPageEditorPart$2.widgetSelected(MultiPageEditorPart.java:290)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:240)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1282)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1267)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1061)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:2746)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1433)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:257)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3588)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3209)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)

9-patch是使用SDK中的draw9patch工具创建的。我在这个项目中使用的所有图像都存在问题。我之前在其他项目中使用过9-patch而没有遇到问题，因此我认为当前png格式可能存在特定问题。也许设计师使用的Photoshop创建的png会导致无效的9-patches。有人知道这里的问题是什么吗？
更新：
工作版本： enter image description here 不工作的版本： enter image description here
1
你能发布实际的9-patch吗？ - Kevin Coppock
4个回答
10

您刚错过了设置内容区域。

在您的9 patch png图像中绘制右边和底部的边框。输入图像描述

根据Android文档，你所谓的内容区域是可选填充框：http://developer.android.com/guide/topics/graphics/2d-graphics.html#nine-patch - iheanyi
是的，这对我有用，谢谢。虽然这是可选的，但没有它也可以工作，有了它就可以工作。+1 - shailesh
2
如果你只在一个文件夹中添加了9Patch图片，例如只在drawable-xhdpi中添加了，则会出现此类错误，你应该将它放置在drawable文件夹中或者所有文件夹中，如drawable-hdpi,drawable-mdpi,drawable-xhdpi,drawable-xxhdpi,等等。
1
没有尝试过，但看起来就是这样。 - didi_X8
0

看起来这里的问题是： 不工作的版本缺少2像素的透明边框。然而奇怪的是，draw9patch没有抱怨，并显示它是工作的。

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