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public void clickHandler(View source)
    {

        //»ñÈ¡UI½çÃæÖÐIDΪR.id.showµÄÎı¾¿ò
        TextView tv=(TextView)findViewById(R.id.show);
        //¸Ä±äÎı¾¿òµÄÄÚÈÝ
        tv.setText("hello android-"+new java.util.Date());
    }

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תÔØÓÚ:https://www.cnblogs.com/hishark/p/7500455.html