与在Android Studio中的错误渲染选择图像按钮 [英] image button with selector in android studio error rendering

问题描述

我做了一个按钮与选择器pressed效果..我采用了android工作室，
当我使用月食其运行以及..
但是，当我尝试在Android Studio中，日志持续显示错误。

I made a button with a pressed effect with selector.. I am using android studio, when I use eclipse its running well.. but, when I try in android studio, the log keeps displaying error..

这是我的日志：

java.lang.NullPointerException
at android.graphics.Bitmap_Delegate.createBitmap(Bitmap_Delegate.java:614)
at android.graphics.Bitmap_Delegate.createBitmap(Bitmap_Delegate.java:122)
at android.graphics.Bitmap_Delegate.createBitmap(Bitmap_Delegate.java:104)
at com.android.layoutlib.bridge.impl.ResourceHelper.getDrawable(ResourceHelper.java:249)
at android.content.res.BridgeTypedArray.getDrawable(BridgeTypedArray.java:674)
at android.view.View.<init>(View.java:3730)
at android.widget.ImageView.<init>(ImageView.java:139)
at android.widget.ImageButton.<init>(ImageButton.java:86)
at android.widget.ImageButton.<init>(ImageButton.java:82)
at android.widget.ImageButton.<init>(ImageButton.java:78)
at sun.reflect.GeneratedConstructorAccessor75.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.
   newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
at android.view.LayoutInflater.createView(LayoutInflater.java:607)
at android.view.BridgeInflater.onCreateView(BridgeInflater.java:82)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:682)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:741)
at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:128)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:806)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:782)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:385)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:400)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:332)
at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:350)
at com.android.tools.idea.rendering.RenderService$5.compute(RenderService.java:688)
at com.android.tools.idea.rendering.RenderService$5.compute(RenderService.java:677)
at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:932)
at com.android.tools.idea.rendering.RenderService.createRenderSession(RenderService.java:677)
at com.android.tools.idea.rendering.RenderService.render(RenderService.java:815)
at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager.
   doRender(AndroidLayoutPreviewToolWindowManager.java:646)
at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager.
   access$1700(AndroidLayoutPreviewToolWindowManager.java:82)
at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7$1.
   run(AndroidLayoutPreviewToolWindowManager.java:589)
at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:178)
at com.intellij.openapi.progress.ProgressManager.executeProcessUnderProgress
   (ProgressManager.java:209)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress
   (ProgressManagerImpl.java:212)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess
    (ProgressManagerImpl.java:171)
at org.jetbrains.android.uipreview.AndroidLayoutPreviewToolWindowManager$7.run
   (AndroidLayoutPreviewToolWindowManager.java:584)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:320)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:310)
at com.intellij.util.ui.update.MergingUpdateQueue$2.run(MergingUpdateQueue.java:254)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:269)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:227)
at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:217)
at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
at com.intellij.util.Alarm$Request$1.run(Alarm.java:327)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

这是我的选择：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >

<item android:state_pressed="true" android:drawable="@drawable/press_pdgmap" /> <!-- pressed -->
<item android:state_focused="true" android:drawable="@drawable/hover_pdgmap2" /> <!-- hover -->

<item android:drawable="@drawable/hover_pdgmap" /> <!-- default -->

</selector>

在我的活动我使用：

<ImageButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/imageButton"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:background="@drawable/selector"
    android:clickable="true" />

在我的活动红色标记一直显示机器人：背景=@绘制/选择器行

In my activity a red marker keeps showing in "android:background="@drawable/selector" line.

我有移动图像和选择文件迪绘制，我究竟做错了什么？

I have move image and selector file di drawable, what am I doing wrong?

请注意：对不起，如果我的解释是坏的。

Note: sorry if my explanation is bad.

推荐答案

我改变code自定义选择器按钮，进入这个

I change code for custom selector for button into this

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

<item android:state_pressed="true">
    <bitmap android:src="@drawable/press" />
</item>

<item android:state_focused="true">
    <bitmap android:src="@drawable/notpress" />
</item>

<item>
    <bitmap android:src="@drawable/notpress" />
</item>
</selector>

和它的工作
你可以看到我的机器人工作室 PIC

注：我使用的Andr​​oid V1.0.1工作室和更新我的SDK到最新版本。

NB: i'm Using Android Studio v1.0.1 and Update my SDK into latest version

这篇关于与在Android Studio中的错误渲染选择图像按钮的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！