圖片縮放時java.lang.IllegalArgumentException: pointerIndex out of range解決方案

06-03 20:45:24.143: E/AndroidRuntime(1230): FATAL EXCEPTION: main
06-03 20:45:24.143: E/AndroidRuntime(1230): Java.lang.IllegalArgumentException: pointerIndex out of range
06-03 20:45:24.143: E/AndroidRuntime(1230): at Android.view.MotionEvent.nativeGetAxisValue(Native Method)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.MotionEvent.getX(MotionEvent.java:1981)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.support.v4.view.MotionEventCompatEclair.getX(MotionEventCompatEclair.java:32)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.support.v4.view.MotionEventCompat$EclairMotionEventVersionImpl.getX(MotionEventCompat.java:91)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.support.v4.view.MotionEventCompat.getX(MotionEventCompat.java:219)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.support.v4.view.ViewPager.onInterceptTouchEvent(ViewPager.java:1768)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1935)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2289)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2032)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2289)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2032)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2289)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2032)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2289)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2032)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2289)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2032)
06-03 20:45:24.143: E/AndroidRuntime(1230): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2020)
06-03 20:45:24.143: E/AndroidRuntime(1230): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1470)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.app.Activity.dispatchTouchEvent(Activity.java:2471)
06-03 20:45:24.143: E/AndroidRuntime(1230): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1968)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.View.dispatchPointerEvent(View.java:7396)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3251)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3196)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4238)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4217)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4309)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:171)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:163)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:4288)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:4328)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.Choreographer.doCallbacks(Choreographer.java:555)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.Choreographer.doFrame(Choreographer.java:523)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.os.Handler.handleCallback(Handler.java:615)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.os.Handler.dispatchMessage(Handler.java:92)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.os.Looper.loop(Looper.java:137)
06-03 20:45:24.143: E/AndroidRuntime(1230): at android.app.ActivityThread.main(ActivityThread.java:4803)
06-03 20:45:24.143: E/AndroidRuntime(1230): at java.lang.reflect.Method.invokeNative(Native Method)
06-03 20:45:24.143: E/AndroidRuntime(1230): at java.lang.reflect.Method.invoke(Method.java:511)
06-03 20:45:24.143: E/AndroidRuntime(1230): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
06-03 20:45:24.143: E/AndroidRuntime(1230): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
06-03 20:45:24.143: E/AndroidRuntime(1230): at dalvik.system.NativeStart.main(Native Method)
06-03 20:45:26.773: E/Trace(1281): error opening trace file: No such file or directory (2)

一個問題,兩天時間,搜破了百度沒有啥成效。只有這點東西,到處轉的,沒有說明怎麼用。幫助不大!百度上僅有的點內容如下:

=========================================================================================================

在做多點觸控放大縮小,操作自己所繪製的圖形時發生這個異常,如果是操作圖片的放大縮小多點觸控不會出現這個錯誤
 
這個bug是Android系統原因   所以第一種方式是:
 
修改frameworks\base\core\jni\android_view_MotionEvent.cpp的android_view_MotionEvent_nativeGetAxisValue方法
 
註釋掉
[java]
if (!validatePointerIndex(env, pointerIndex, pointerCount)) {return 0;} 
改完後需重新編譯整個系統,然後替換lib庫,重新編譯整個系統一般需要半個多小時,這個方法就比較麻煩了
 
第二種方法是:捕獲IllegalArgumentException(非法參數異常)異常 即如
[java] 
private float spacing(MotionEvent event) { 
        try { 
        x = event.getX(0) - event.getX(1); 
        y = event.getY(0) - event.getY(1); 
    } catch (IllegalArgumentException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
    } 
    第二種方法簡單有效

========================================================================================================

這種方法我不會用,不知道該用在哪兒。


接着用谷歌搜索,順着終於找到了解決方案。經歷了以下網站:

http://stackoverflow.com/questions/6919292/pointerindex-out-of-range-android-multitouch

https://code.google.com/p/android/issues/detail?id=18990

https://github.com/chrisbanes/PhotoView/issues/31


上面是搜索的過程,現在把精華內容揀出來:思路是自定義ViewPager,重寫onTouchEvent 和onInterceptTouchEvent。具體見下:

It's the android ViewPager's bug
stackoverflow's report: http://stackoverflow.com/questions/6919292/pointerindex-out-of-range-android-multitouch
android's report: http://code.google.com/p/android/issues/detail?id=18990

My simple's method to fix this bug:
You can extends the ViewPager class, your own ViewPager should override the onTouchEvent and the onInterceptTouchEvent methods, and try-catch the IllegalArgumentException exception. Then use your own ViewPager class in layout or others you want.

Examples:

[html] view plain copy
 在CODE上查看代碼片派生到我的代碼片
  1. /** Custom your own ViewPager to extends support ViewPager. java source: */  
  2. /** Created by azi on 2013-6-21.  */  
  3.   
  4. package com.chaokuadi.android.support.view;  
  5.   
  6. import android.content.Context;  
  7. import android.util.AttributeSet;  
  8. import android.view.MotionEvent;  
  9.   
  10. public class ViewPagerFixed extends android.support.v4.view.ViewPager {  
  11.   
  12.     public ViewPagerFixed(Context context) {  
  13.         super(context);  
  14.     }  
  15.   
  16.     public ViewPagerFixed(Context context, AttributeSet attrs) {  
  17.         super(context, attrs);  
  18.     }  
  19.   
  20.     @Override  
  21.     public boolean onTouchEvent(MotionEvent ev) {  
  22.         try {  
  23.             return super.onTouchEvent(ev);  
  24.         } catch (IllegalArgumentException ex) {  
  25.             ex.printStackTrace();  
  26.         }  
  27.         return false;  
  28.     }  
  29.   
  30.     @Override  
  31.     public boolean onInterceptTouchEvent(MotionEvent ev) {  
  32.         try {  
  33.             return super.onInterceptTouchEvent(ev);  
  34.         } catch (IllegalArgumentException ex) {  
  35.             ex.printStackTrace();  
  36.         }  
  37.         return false;  
  38.     }  
  39. }  
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