更改PopupWindow中TextView的文本无法正常工作

Question

我有动态改变文本的问题TextView在PopupWindowAndroid中.我已使用a 引用了TextView内部元素,但文本未更新.任何帮助将非常感谢!:)PopupWindowLayoutInflaterViewGroup

我的代码如下:

private void popupWindow() {
        try {
            LayoutInflater inflater = (LayoutInflater) SwingSpeed.this
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View layout = inflater.inflate(R.layout.popup_recording,
                    (ViewGroup) findViewById(R.id.popup_element));
            pw = new PopupWindow(inflater.inflate(R.layout.popup_recording,
                    null, false), 480, 800, true);
            pw.showAtLocation(findViewById(R.id.swingspeed), Gravity.CENTER, 0,
                    0);
            recording_text = (TextView) layout
                    .findViewById(R.id.recording_text);
            recording_text.setText("Recording"); //Update the TextView  
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

Answer 1

问题是:您要将布局膨胀两次,而不是:

recording_text = (TextView) layout.findViewById(R.id.recording_text);

做这个:

recording_text = (TextView) pw.getContentView().
                 findViewById(R.id.recording_text);

而且,你根本不需要这一行:

View layout = inflater.inflate(R.layout.popup_recording,
                (ViewGroup) findViewById(R.id.popup_element));