在最近的專案中使用WebView載入網頁，開始時show載入框，結束時dismiss載入框，但是載入框不消失：

private Dialog dialog;


web.setWebViewClient(new WebViewClient() {
            @Override
            public void onPageStarted(WebView view, String url,
                    Bitmap favicon) {
                super.onPageStarted(view, url, favicon);
             dialog = CommonUtils.getCustomLoadingDialog(XXXXActivity.this
 
, "資料正在載入中,請稍後...");
                dialog.show();
            }

            @Override
            public void onPageFinished(WebView view, String url) {
                // TODO Auto-generated method stub
                super.onPageFinished(view, url);
                dialog.dismiss();//在這裡時
            }
        });
 

dialog中dismiss()方法原始碼如下：

public void dismiss() {
        if (Looper.myLooper() == mHandler.getLooper()) {
            dismissDialog();
        } else {
            mHandler.post(mDismissAction);
        }
    }

    void dismissDialog() {
        if (mDecor == null || !mShowing) {
            return
 
;
        }

        //我進行了debug除錯，到這裡發現mWindow已經Destroyed了，所以return
        if (mWindow.isDestroyed()) {
            Log.e(TAG, "Tried to dismissDialog() but the Dialog's window was already destroyed!");
            return;
        }

        try {
            mWindowManager.removeView(mDecor);
        } finally {
            if (mActionMode != null) {
                mActionMode.finish();
            }
            mDecor = null;
            mWindow.closeAllPanels();
            onStop();
            mShowing = false;

            sendDismissMessage();
        }
    }

谷歌了很多，發現一個已經被android廢棄的彈出框顯示消失方法，解決程式碼如下：

private Dialog dialog;


web.setWebViewClient(new WebViewClient() {

            @Override
            public void onPageStarted(WebView view, String url,
                    Bitmap favicon) {
                super.onPageStarted(view, url, favicon);
                showDialog(1);
            }

            @Override
            public void onPageFinished(WebView view, String url) {
                // TODO Auto-generated method stub
                super.onPageFinished(view, url);

                dismissDialog(1);
            }
        });
    }

    @Override
    @Deprecated
    protected Dialog onCreateDialog(int id) {
        if (id == 1) {
            if (dialog == null) {
                dialog = CommonUtils.getCustomLoadingDialog(XXXXActivity.this, "資料正在載入中,請稍後...");
            }
            return dialog;
        }
        return super.onCreateDialog(id);

    }