Android Open Source - AndroidPINProtectionExample Numpad Keyboard

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.example.pinexample.utilities;
//  ww  w  . j a va2  s . c  om
import android.content.Context;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.TextView;

import com.example.pinexample.R;

/**
 * My try to map a custom numpad keyboard. The class initializes the custom
 * numpad keyboard buttons, and binds them with the EditText field. 
 * 
 * @author drakuwa
 *
 */
public class NumpadKeyboard implements OnClickListener {

  Context context;
  View holder;
  EditText content;
  TextView one, two, three, four, five, six, seven, eight, nine, zero, dot,
      back;

  /**
   * Class constructor which initializes the context c, the numpad view 
   * holder, and the edit text field - content.
   * @param c
   * @param holder
   * @param content
   */
  public NumpadKeyboard(Context c, View holder, EditText content) {
    this.context = c;
    this.holder = holder;
    this.content = content;
    initView();
  }

  /**
   * Initialize the views and set the click listeners
   */
  private void initView() {
    one = (TextView) holder.findViewById(R.id.numpad1);
    two = (TextView) holder.findViewById(R.id.numpad2);
    three = (TextView) holder.findViewById(R.id.numpad3);
    four = (TextView) holder.findViewById(R.id.numpad4);
    five = (TextView) holder.findViewById(R.id.numpad5);
    six = (TextView) holder.findViewById(R.id.numpad6);
    seven = (TextView) holder.findViewById(R.id.numpad7);
    eight = (TextView) holder.findViewById(R.id.numpad8);
    nine = (TextView) holder.findViewById(R.id.numpad9);
    dot = (TextView) holder.findViewById(R.id.numpadDot);
    zero = (TextView) holder.findViewById(R.id.numpad0);
    back = (TextView) holder.findViewById(R.id.numpadBack);

    one.setOnClickListener(this);
    two.setOnClickListener(this);
    three.setOnClickListener(this);
    four.setOnClickListener(this);
    five.setOnClickListener(this);
    six.setOnClickListener(this);
    seven.setOnClickListener(this);
    eight.setOnClickListener(this);
    nine.setOnClickListener(this);
    dot.setOnClickListener(this);
    zero.setOnClickListener(this);
    back.setOnClickListener(this);
  }

  /**
   * Add the click actions to the buttons
   */
  @Override
  public void onClick(View v) {
    int id = v.getId();
    switch (id) {
    case R.id.numpad1:
      content.append("1");
      break;

    case R.id.numpad2:
      content.append("2");
      break;

    case R.id.numpad3:
      content.append("3");
      break;

    case R.id.numpad4:
      content.append("4");
      break;

    case R.id.numpad5:
      content.append("5");
      break;

    case R.id.numpad6:
      content.append("6");
      break;

    case R.id.numpad7:
      content.append("7");
      break;

    case R.id.numpad8:
      content.append("8");
      break;

    case R.id.numpad9:
      content.append("9");
      break;

    case R.id.numpadDot:
      content.append(".");
      break;

    case R.id.numpad0:
      content.append("0");
      break;

    case R.id.numpadBack:
      String str = content.getText().toString().trim();
      if (str.length() != 0) {
        str = str.substring(0, str.length() - 1);
        content.setText(str);
      }
      break;

    default:
      break;
    }
  }

}

Java Source Code List

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