onclick 在 android 中的自定义 AlertDialog 中不起作用

Question

你好，在下面的代码中，如果它是空的，点击保存应该显示一些错误，否则应该移动到下一个 step.but 它不起作用。在 frgament 中，我正在调用 openDiag() 方法。

谁能帮帮我

public class HomeNurseFragment extends Fragment {

 @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.activity_coordinatorhome, container, false);

        openDialog(rootView);

    public void openDialog(View view) {
            AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getContext());
           // alertDialogBuilder.setTitle("Select Hospital and Proceed");
            final View customLayout
                    = getLayoutInflater()
                    .inflate(
                            R.layout.popup_hospitallist,
                            null);
    
            alertDialogBuilder.setView(customLayout);
            Button save = customLayout.findViewById(R.id.proceed);
            TextView cancel = customLayout.findViewById(R.id.cancel);
    save.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if(hospital.getItemAtPosition(0).equals("Preferred hospital")){
                        hospital.setError("Please select Preferred hospital ");
                    }else {
                    alertDialogBuilder.setCancelable(true);
                    }
                }
            });
     cancel.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    alertDialogBuilder.setOnDismissListener(new DialogInterface.OnDismissListener() {
                        @Override
                        public void onDismiss(DialogInterface dialog) {
                            dialog.dismiss();
                        }
                    });
                }
            });
          //  AlertDialog alertDialog = alertDialogBuilder.create();
    
            alertDialogBuilder.show();
        }
}
}

Answer 1

如果您想显示一条错误消息而不是关闭 AlertDialog，则必须禁用 clickListener 并改为设置自定义的。

public void openDialog(View view) {
    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getContext());
    // alertDialogBuilder.setTitle("Select Hospital and Proceed");
    final View customLayout = getLayoutInflater().inflate(R.layout.popup_hospitallist, null);

     alertDialogBuilder.setView(customLayout);
     alertDialogBuilder.setPositiveButton("Save", null); // set listener to null as you will override it later
     alertDialogBuilder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
    });

    final AlertDialog alertDialog = alertDialogBuilder.create();
    alertDialog.show();

    // Overriding the Positive button here
    alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener()
    {            
      @Override
      public void onClick(View v)
      {
          if(hospital.getItemAtPosition(0).equals("Preferred hospital")){
              hospital.setError("Please select Preferred hospital ");
          } else {
              alertDialogBuilder.setCancelable(true);
          }
      }
  });

onclick 在 android 中的自定义 AlertDialog 中不起作用

onclick not working in custom AlertDialog in android

android

android-alertdialog