我该如何解决这个按钮它无法进入活动页面？答案

【问题标题】：how can I fix this button it can not go to the activity page?我该如何解决这个按钮它无法进入活动页面？
【发布时间】：2019-03-11 17:57:16
【问题描述】：

public class select_fragment extends Fragment {

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_select, null);


    }
    private void button_parking(){

        Intent myIntent = new Intent(f, parking.class);
        startActivity(myIntent);
    }
}

【问题讨论】：

标签： java android android-button

【解决方案1】：

试试这个...

public class select_fragment extends Fragment {

@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup 
container, @Nullable Bundle savedInstanceState) {

    Button your_button = (Button) getActivity.findViewById(R.id.your_id_button)

    your_button.setOnClickListener(new OnClickListener() {
    public void onClick(View v)
    {
       button_parking();
    } 
    });
    return inflater.inflate(R.layout.fragment_select, null);

    }

    private void button_parking(){
    Intent myIntent = new Intent(getActivity(), parking.class);
    startActivity(myIntent);
}

}

【讨论】：

【解决方案2】：

您尚未将视图绑定到您的片段，因此单击按钮无法工作。您需要将视图与findViewById() 绑定。通常您需要通过覆盖 onViewCreated() 来进行绑定，如下所示：

public class select_fragment extends Fragment {

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_select, null);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

         // bind the view here.
         Button button = findViewById(R.id.your_button);
         button.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
                 //call button method here
                 button_parking();
             }
         });
    }

    private void button_parking() {
        Intent myIntent = new Intent(f, parking.class);
        startActivity(myIntent);
    }
}

【讨论】：