Question

我正在尝试向EditText中的Fragment添加验证，但我的应用程序崩溃了。我试图使用getActivity()代替仍然面临同样问题的这个问题。

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Patterns;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.basgeekball.awesomevalidation.AwesomeValidation;
import com.basgeekball.awesomevalidation.ValidationStyle;

public class TestFragment extends Fragment implements View.OnClickListener{

    EditText ET_input_first_name, ET_input_last_name, ET_input_email, ET_input_contact, ET_comments;
    String   first_name, last_name, email , contact , comments;

    private Button buttonSubmit;
    private AwesomeValidation awesomeValidation;

    public TestFragment() {
        // Required empty public constructor
    }

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

        View view = null;
        view = inflater.inflate(R.layout.fragment_test, container, false);

        ET_input_first_name = (EditText)view.findViewById(R.id.input_first_name);
        ET_input_last_name = (EditText)view.findViewById(R.id.input_last_name);
        ET_input_email = (EditText)view.findViewById(R.id.input_email);
        ET_input_contact = (EditText)view.findViewById(R.id.input_contact);
        ET_comments = (EditText)view.findViewById(R.id.comments);

        awesomeValidation = new AwesomeValidation(ValidationStyle.BASIC);
        buttonSubmit = (Button)view.findViewById(R.id.btn_test_drive);

        //adding validation to edittexts
        awesomeValidation.addValidation(this , R.id.input_first_name, "^[A-Za-z\\s]{1,}[\\.]{0,1}[A-Za-z\\s]{0,}$", R.string.nameerror);
        awesomeValidation.addValidation(this, R.id.input_last_name, "^[A-Za-z\\s]{1,}[\\.]{0,1}[A-Za-z\\s]{0,}$", R.string.nameerror);
        awesomeValidation.addValidation(this, R.id.input_email, Patterns.EMAIL_ADDRESS, R.string.nameerror);
        awesomeValidation.addValidation(this, R.id.input_contact, "^[2-9]{2}[0-9]{8}$", R.string.nameerror);

        buttonSubmit.setOnClickListener(this);

        return view;
    }
    private void submitForm() {
        if (awesomeValidation.validate()) {
            Toast.makeText(getActivity(), "Validation Successfull", Toast.LENGTH_LONG).show();
        }
    }
    @Override
    public void onClick(View view) {
        submitForm();
    }
}

Answer 1

要做到这一点，有两种方法：在片段

中使用此代码

1）EditText et = getActivity().findViewById(R.id.editText)

2）在您的活动中制作您的edittext public static并仅在那里初始化它。然后在片段中使用只需编写YourActivity.edittext.getText().toString()。它会起作用

Answer 2

awesomeValidation.addValidation(ET_input_first_name, "^[A-Za-z\\s]{1,}[\\.]{0,1}[A-Za-z\\s]{0,}$", "this is error message");

它完美地工作

在Fragment

2 个答案: