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  • java.lang.IllegalArgumentException: The observer is null.终于解决方式

    java.lang.IllegalArgumentException: The observer is null.终于解决方式

    在使用数据适配的时候的问题:

    java.lang.IllegalArgumentException: The observer is null.
    	at android.database.Observable.unregisterObserver(Observable.java:64)
    	at android.widget.BaseAdapter.unregisterDataSetObserver(BaseAdapter.java:42)
    	at android.widget.AbsListView.onDetachedFromWindow(AbsListView.java:2872)
    	at android.view.View.dispatchDetachedFromWindow(View.java:11908)
    	at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2647)
    	at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2645)
    	at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2645)
    	at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2645)
    	at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2645)
    	at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2645)
    	at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2645)
    	at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2645)
    	at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2645)
    	at android.view.ViewRootImpl.dispatchDetachedFromWindow(ViewRootImpl.java:2685)
    	at android.view.ViewRootImpl.doDie(ViewRootImpl.java:4044)
    	at android.view.ViewRootImpl.die(ViewRootImpl.java:4027)
    	at android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:375)
    	at android.view.WindowManagerImpl$CompatModeWrapper.removeViewImmediate(WindowManagerImpl.java:170)
    	at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3352)
    	at android.app.ActivityThread.access$1200(ActivityThread.java:140)
    	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1266)
    	at android.os.Handler.dispatchMessage(Handler.java:99)
    	at android.os.Looper.loop(Looper.java:137)
    	at android.app.ActivityThread.main(ActivityThread.java:4914)
    	at java.lang.reflect.Method.invokeNative(Native Method)
    	at java.lang.reflect.Method.invoke(Method.java:511)
    	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:808)
    	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:575)
    	at dalvik.system.NativeStart.main(Native Method)
    导致的问题所在是BaseAdapter
    解决方式:在extends BaseAdapter的时候加入例如以下代码就可以:

    	@Override
    	public void unregisterDataSetObserver(DataSetObserver observer) {
    		if (observer != null) {
    	        super.unregisterDataSetObserver(observer);
    	    }
    	}

    希望能帮助你,加油!

    这里也是我:我的eoe博客关于这个问题地址

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  • 原文地址:https://www.cnblogs.com/claireyuancy/p/6958138.html
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