如何将数据库弹出列表中的数据传递到android的javascript界面，并在html webview上添加此值

popupdialog.java

public void showCustomRegionPopup() {
.
.
.
            listRegion.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                final String region = (String) listRegion.getItemAtPosition(position);
                SQLiteDatabase database = context.pdfDatabaseManager.getReadableDatabase();
                final Cursor c = database.rawQuery("Select * From " + PDFDatabaseManager.DATABASE_REGION_TABLE + " WHERE "+ PDFDatabaseManager.KEY_REGION +"='"+region+"'", null);
                String code = "";
                while (c.moveToNext()) code = c.getString(1);
                c.close();
                context.setCodeAndRegion(code,region);
                a.dismiss();

            }
        });

我想从popupdialog.java中获取数据库区域值，并将数据传递到androidaction.java，然后运行此代码将它们放到html中…

webview.post(new Runnable() {
        @Override
        public void run() {
            webview.evaluateJavascript("javascript:showCustomRegionPopup('".concat(region).concat("');"), null);
        }
    });
}

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检查此链接以了解如何定义javascript接口@EliasFazel我的问题是如何传递数据，我阅读了此链接，但暂时没有帮助我。。。

webview.post(new Runnable() {
        @Override
        public void run() {
            webview.evaluateJavascript("javascript:showCustomRegionPopup('".concat(region).concat("');"), null);
        }
    });
}