例外設置Android 2.3.4上的Imagebutton視圖

Question

我一直在Android 4.0上運行我的應用程序，它工作得很好。但是，我在運行Android 2.3.4的手機上測試了該應用，該應用崩潰了。

03-07 17:21:58.789: E/AndroidRuntime(5741): FATAL EXCEPTION: main 
03-07 17:21:58.789: E/AndroidRuntime(5741): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.motesclient/com.example.motesclient.ConnectActivity}: android.view.InflateException: Binary XML file line #22: Error inflating class android.widget.ImageButton 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.os.Handler.dispatchMessage(Handler.java:99) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.os.Looper.loop(Looper.java:130) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.app.ActivityThread.main(ActivityThread.java:3687) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at java.lang.reflect.Method.invoke(Method.java:507) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at dalvik.system.NativeStart.main(Native Method) 
03-07 17:21:58.789: E/AndroidRuntime(5741): Caused by: android.view.InflateException: Binary XML file line #22: Error inflating class android.widget.ImageButton 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.view.LayoutInflater.createView(LayoutInflater.java:518) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:623) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.view.LayoutInflater.inflate(LayoutInflater.java:408) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:209) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.app.Activity.setContentView(Activity.java:1657) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at com.example.motesclient.ConnectActivity.onCreate(ConnectActivity.java:27) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  ... 11 more 
03-07 17:21:58.789: E/AndroidRuntime(5741): Caused by: java.lang.reflect.InvocationTargetException 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at java.lang.reflect.Constructor.constructNative(Native Method) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at java.lang.reflect.Constructor.newInstance(Constructor.java:415) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.view.LayoutInflater.createView(LayoutInflater.java:505) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  ... 22 more 
03-07 17:21:58.789: E/AndroidRuntime(5741): Caused by: android.content.res.Resources$NotFoundException: Resource is not a Drawable (color or path): TypedValue{t=0x2/d=0x101030e a=-1} 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.content.res.Resources.loadDrawable(Resources.java:1681) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.content.res.TypedArray.getDrawable(TypedArray.java:601) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.view.View.<init>(View.java:1961) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.widget.ImageView.<init>(ImageView.java:112) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.widget.ImageButton.<init>(ImageButton.java:85) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  at android.widget.ImageButton.<init>(ImageButton.java:81) 
03-07 17:21:58.789: E/AndroidRuntime(5741):  ... 25 more 

這是ImageButton的：當它試圖設置ImageButton的觀點我拋出一個異常

<ImageButton 
    android:id="@+id/connect_button" 
    android:background="?android:attr/selectableItemBackground" 
    android:contentDescription="@string/connect_picture" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_gravity="center" 
    android:src="@drawable/connectxml"/> 

這裏是connectxml.xml文件，該文件被放置在繪製文件夾

<?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/connectbuttonpressed" /> <!-- pressed --> 
     <item android:state_focused="true" 
     android:drawable="@drawable/connectbuttonpressed" /> <!-- focused --> 
     <item android:drawable="@drawable/connectbutton" /> <!-- default --> 
</selector> 

任何想法如何解決它？

Answer 1

你使用的東西，並沒有API 9（2.3）存在：

android:background="?android:attr/selectableItemBackground" 

你可以去你的android平臺的文件夾，看看是否支持給定的版本。它位於：

android-sdk\platforms\android-9\data\res\values\attr.xml。

重新編輯

一個可能的解決辦法是刪除了有關問題的線路，而是添加：

style="@style/Custom.ImageButton" 

然後添加一個styles.xml到res/values看起來像這樣：

<resources> 
    <style name="Custom.ImageButton" parent="@android:style/Widget.ImageButton"> 
     <item name="android:background">@drawable/your_own_graphic</item> 
    </style> 
</resources> 

和styles.xml到res/values-14看起來像這樣：

<style name="Custom.ImageButton" parent="@android:style/Widget.ImageButton"> 
     <item name="android:background">?android:attr/selectableItemBackground</item> 
    </style> 

對於先前的建議是錯誤的，我很抱歉。

Answer 2

一切看起來都適合我。我會盡量清理這個項目。

假設你使用的是Eclipse：項目 - >清理 - >清理所有

有時日食失敗，並在最新的XML變化更新R.java。