Android Open Source - TAQueue Login Fragment

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License

The source code is released under:
MIT License
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Java Source Code

package com.familybiz.greg.taqueue.view.login;
/* w ww  .  j a v a 2s. c  om*/
import android.app.Fragment;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.text.InputFilter;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.Toast;

import com.familybiz.greg.taqueue.R;

/**
 * Abstract fragment containing the information and layout of a login screen.
 *
 * Created by Greg Anderson
 */
public abstract class LoginFragment extends Fragment {

  // Represents the name box for both students and TA's
  protected EditText mNameTextBox;

  // Represents both the location box (for students) and the password box (for TA's)
  // There is probably a better name for it, but I couldn't come up with it.
  protected EditText mPasswordTextBox;

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

    LinearLayout rootLayout = new LinearLayout(getActivity());
    rootLayout.setOrientation(LinearLayout.VERTICAL);

    mNameTextBox = new EditText(getActivity());
    mPasswordTextBox = new EditText(getActivity());

    // Set the maximum number of characters allowed
    int maxLength = 25;
    mNameTextBox.setFilters(new InputFilter[]{new InputFilter.LengthFilter(maxLength)});
    mPasswordTextBox.setFilters(new InputFilter[]{new InputFilter.LengthFilter(maxLength)});

    // Login
    Button loginButton = new Button(getActivity());
    loginButton.setText(getString(R.string.login_button));
    loginButton.setBackgroundResource(R.drawable.custom_button);
    loginButton.setTextColor(Color.BLACK);

    rootLayout.addView(mNameTextBox, new LinearLayout.LayoutParams(
        ViewGroup.LayoutParams.MATCH_PARENT,
        ViewGroup.LayoutParams.WRAP_CONTENT));

    rootLayout.addView(mPasswordTextBox, new LinearLayout.LayoutParams(
        ViewGroup.LayoutParams.MATCH_PARENT,
        ViewGroup.LayoutParams.WRAP_CONTENT));

    LinearLayout.LayoutParams buttonParams = new LinearLayout.LayoutParams(
        ViewGroup.LayoutParams.WRAP_CONTENT,
        ViewGroup.LayoutParams.WRAP_CONTENT);
    buttonParams.gravity = Gravity.CENTER_HORIZONTAL;
    buttonParams.topMargin = 5;
    rootLayout.addView(loginButton, buttonParams);


    loginButton.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View view) {
        // Hide the keyboard
        InputMethodManager inputMethodManager = (InputMethodManager)getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
        inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);

        String name = mNameTextBox.getText().toString();
        String password = mPasswordTextBox.getText().toString();
        if (name.isEmpty() || password.isEmpty()) {
          Toast.makeText(getActivity(), "Please fill in both fields", Toast.LENGTH_SHORT).show();
          return;
        }
        ProgressBar loadingCircle = (ProgressBar)getActivity().findViewById(R.id.loading_circle);
        loadingCircle.setVisibility(View.VISIBLE);

        makeNetworkCallToCreateUser(name, password);
      }
    });

    return rootLayout;
  }

  abstract void makeNetworkCallToCreateUser(String name, String password);
}
Java Source Code List
