首先，崩溃的原因是decorView的索引是-1，我们可以从Android源代码中知道，有代码片段:

类:android.view.WindowManagerGlobal 文件:WindowManagerGlobal.java

private int findViewLocked(View view, boolean required) {
        final int index = mViews.indexOf(view);
//here, view is decorView,comment by OF
        if (required && index < 0) {
            throw new IllegalArgumentException("View=" + view + " not attached to window manager");
        }
        return index;
    }

所以我们得到了跟随分辨率，只是判断decorView的索引，如果它大于0，那么继续，或者只是返回并放弃解散，代码如下:

try {
            Class<?> windowMgrGloable = Class.forName("android.view.WindowManagerGlobal");
            try {
                Method mtdGetIntance = windowMgrGloable.getDeclaredMethod("getInstance");
                mtdGetIntance.setAccessible(true);
                try {
                    Object windownGlobal = mtdGetIntance.invoke(null,null);
                    try {
                        Field mViewField = windowMgrGloable.getDeclaredField("mViews");
                        mViewField.setAccessible(true);
                        ArrayList<View> mViews = (ArrayList<View>) mViewField.get(windownGlobal);
                        int decorViewIndex = mViews.indexOf(pd.getWindow().getDecorView());
                        Log.i(TAG,"check index:"+decorViewIndex);
                        if (decorViewIndex < 0) {
                            return;
                        }
                    } catch (NoSuchFieldException e) {
                        e.printStackTrace();
                    }
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                } catch (InvocationTargetException e) {
                    e.printStackTrace();
                }
            } catch (NoSuchMethodException e) {
                e.printStackTrace();
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        if (pd.isShowing()) {
            pd.dismiss();
        }

@Override
public void onPause() {
    super.onPause();

    if(pDialog != null)
        pDialog .dismiss();
    pDialog = null;
}

提到这一点。

我们还在onPause方法或onDestroy方法上解散了对话框

@Override
protected void onPause() {
    super.onPause();
    dialog.dismiss();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    dialog.dismiss();
}

上面的解决方案都不适合我，因为我使用自定义对话类，我不想覆盖停止/销毁方法在我所有的活动，更容易添加一个参数到我的类，并从实例发送它，这个解决方案适合我

class CustomLoadingClass(var activity: Activity?, var lifecycle: Lifecycle? = null) {

lateinit var dialog: Dialog

fun show(cancelable: Boolean = false, title: String? = null) {
    lifecycle?.let {
        val defaultLifecycleObserver = object : DefaultLifecycleObserver {
            override fun onCreate(owner: LifecycleOwner) {
                super.onCreate(owner)
                activity?.let { it ->
                    if (!it.isFinishing && !it.isDestroyed) {
                        dialog = Dialog(it, android.R.style.Theme_Translucent_NoTitleBar)
                        dialog.setContentView(it.layoutInflater.inflate(R.layout.full_screen_progress_bar,null)!!)
                        dialog.setCancelable(cancelable)
                        dialog.show()
                    }
                }
            }
            override fun onPause(owner: LifecycleOwner) {
                super.onPause(owner)
                dismiss()
            }

            override fun onStop(owner: LifecycleOwner) {
                super.onStop(owner)
                dismiss()
            }

            override fun onDestroy(owner: LifecycleOwner) {
                super.onDestroy(owner)
                dismiss()
            }
        }
        it.addObserver(defaultLifecycleObserver)
    }
}

fun dismiss() {
    activity?.let { it ->
         if (!it.isFinishing && !it.isDestroyed) 
           dialog.dismiss()
    }
  }
}

看看准则是如何运作的:

调用异步任务后，异步任务将在后台运行。这是可取的。现在，这个异步任务有一个附加到Activity的进度对话框，如果你问如何查看代码:

pDialog = new ProgressDialog(CLASS.this);

你通过考试了。这是论点的背景。因此Progress对话框仍然附加到活动。

现在考虑一下这个场景: 如果我们尝试使用finish()方法完成活动，当异步任务正在进行时，是您试图访问附加到活动的资源的点，即活动不再存在时的进度条。

因此你得到:

java.lang.IllegalArgumentException: View not attached to the window manager

解决方法:

1)确保对话框在活动结束前被解除或取消。

2)完成活动，只有在对话框被解散后，即异步任务结束。

检查所有者活动是否仍然存在:

if (dialog.getOwnerActivity() ==null || dialog.getOwnerActivity().isFinishing()) {
    dialog.dismiss();
}