FillBlankView.java 文件源码

@Override
public void onClick(final View widget) {
    View view = LayoutInflater.from(context).inflate(R.layout.layout_input, null);
    final EditText etInput = (EditText) view.findViewById(R.id.et_answer);
    Button btnFillBlank = (Button) view.findViewById(R.id.btn_fill_blank);

    // 显示原有答案
    String oldAnswer = answerList.get(position);
    if (!TextUtils.isEmpty(oldAnswer)) {
        etInput.setText(oldAnswer);
        etInput.setSelection(oldAnswer.length());
    }

    final PopupWindow popupWindow = new PopupWindow(view, LayoutParams.MATCH_PARENT, dp2px(40));
    // 获取焦点
    popupWindow.setFocusable(true);
    // 为了防止弹出菜单获取焦点之后，点击Activity的其他组件没有响应
    popupWindow.setBackgroundDrawable(new PaintDrawable());
    // 设置PopupWindow在软键盘的上方
    popupWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
    // 弹出PopupWindow
    popupWindow.showAtLocation(tvContent, Gravity.BOTTOM, 0, 0);

    btnFillBlank.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            // 填写答案
            String answer = etInput.getText().toString();
            fillAnswer(answer, position);
            popupWindow.dismiss();
        }
    });

    // 显示软键盘
    InputMethodManager inputMethodManager =
            (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
    inputMethodManager.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
}