如何检查选定的警报对话框项目？

Question

我在textview上设置了警告对话框，我在这里使用了String数组，现在如何选中没有任何项目被选中或没有选中，如果没有项目选择它不应该提交..请检查我的代码片段代码在下面..感谢提前。 。

sp3=(TextView)findViewById(R.id.daydates); 
    btnsubmit=(Button)findViewById(R.id.btnreg); 

final String[] items = new String[] {"01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31"}; 
    final ArrayAdapter<String> adapter123 = new ArrayAdapter<String>(this, 
      android.R.layout.simple_spinner_dropdown_item, items); 


    sp3.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View w) { 
       new AlertDialog.Builder(RegistrationForm.this) 
       .setTitle("Select Day") 
       .setAdapter(adapter123, new DialogInterface.OnClickListener() { 

       @Override 
       public void onClick(DialogInterface dialog, int which) { 

        sp3.setText(adapter123.getItem(which).toString()); 

        dialog.dismiss(); 
       } 
       }).create().show(); 
      } 
    }); 
    btnsubmit.setOnClickListener(new OnClickListener() 
    { 

     @Override 
     public void onClick(View v) 
     { 
      if(emailtext.getText().toString().trim().length() > 0 && passtext.getText().toString().trim().length() > 0 && confirmpass.getText().toString().trim().length() > 0 && username.getText().toString().trim().length() > 0 && firstname.getText().toString().trim().length() > 0 && lastname.getText().toString().trim().length() > 0 && isSetDay==true && isSetMonth==true && isSetYear==true && isSetPro==true) 
     { 
      isSetDay=false; 
      isSetMonth=false; 
      isSetYear=false; 
      isSetPro=false; 
     new AttemptLogin().execute(); 

     final String uname=username.getText().toString(); 
     if(!isValidUserName(uname)) 
     { 
      username.setError("Invalid User Name"); 
     } 
     final String fname=firstname.getText().toString(); 
     if(!isValidFirstName(fname)) 
     { 
      firstname.setError("Invalid First Name"); 
     } 
     final String lname=lastname.getText().toString(); 
     if(!isValidLastName(lname)) 
     { 
      lastname.setError("Invalid Last Name"); 
     } 

     } 

     else 
     { 
      Toast.makeText(getApplicationContext(), "Fill the details", Toast.LENGTH_LONG).show(); 
     } 
     break; 
     } 
    }); 

Answer 1

你为什么不只是使用一个布尔值，以确定是否点击时btnSubmit按钮，然后复位它，如果你需要重新使用它SP3已设置。

这是我的建议：

sp3=(TextView)findViewById(R.id.daydates); 
btnsubmit=(Button)findViewById(R.id.btnreg); 
boolean isSet = false; 

final String[] items = new String[] {"01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31"}; 
    final ArrayAdapter<String> adapter123 = new ArrayAdapter<String>(this, 
      android.R.layout.simple_spinner_dropdown_item, items); 


    sp3.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View w) { 
       new AlertDialog.Builder(RegistrationForm.this) 
       .setTitle("Select Day") 
       .setAdapter(adapter123, new DialogInterface.OnClickListener() { 

       @Override 
       public void onClick(DialogInterface dialog, int which) { 

        sp3.setText(adapter123.getItem(which).toString()); 
        isSet = true; 

        dialog.dismiss(); 
       } 
       }).create().show(); 
      } 
    }); 

    btnsubmit.setOnClickListener(new OnClickListener() 
    { 

     @Override 
     public void onClick(View v) 
     { 
      if(!isSet) 
      { 
       //Do Something 
       isSet = false; 
      } 
     } 
    });