按钮onclick无法在Android中触发事件

Question

Here is my button on click listener. I am trying to listen to the onclick event firing. But it is not working. I have tried the method given in develop.android.com. But this method seems to be not working. Can anyone point out the mistake that I am doing here?

 public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
      Bundle args = getArguments();
      v = inflater.inflate(R.layout.product_fragment, container, false);          
    Button button = (Button) v.findViewById(R.id.buynow_button);
     button.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            Toast.makeText(getActivity(), "test", 2000);
        }
    });
    return v;
   }

Answer 1

您没有在Toast上调用show函数。

   Toast.makeText(getActivity(), "test", 2000).show();

Answer 2

Toast.makeText(getActivity(), "test", 2000);

需要更改为：

Toast.makeText(getActivity(), "test", Toast.LENGTH_SHORT).show();