Android Open Source - twawm2 My Preference Activity

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License

The source code is released under:

Copyright (c) 2014, afnf All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistr...

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Java Source Code

package com.appspot.afnf4199ga.wmgraph.app;
//  w  ww.  j ava  2  s . c om
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import android.os.Bundle;
import android.preference.EditTextPreference;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceChangeListener;
import android.preference.PreferenceActivity;
import android.preference.PreferenceScreen;
import android.text.InputFilter;
import android.text.Spanned;
import android.widget.EditText;

import com.appspot.afnf4199ga.utils.MyStringUtlis;
import com.appspot.afnf4199ga.wmgraph.R;

@SuppressWarnings("deprecation")
public class MyPreferenceActivity extends PreferenceActivity {

  static public Pattern IP_ADDR_PATTERN = Pattern
      .compile("^([01]?\\d\\d?|2[0-4]\\d|25[0-4])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-4])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-4])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-4])$");

  static private InputFilter ipAddrFilter = new InputFilter() {
    @Override
    public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
      StringBuilder sb = new StringBuilder();
      for (int i = start; i < end; i++) {
        char c = source.charAt(i);
        if (('0' <= c && c <= '9') || c == '.') {
          sb.append(c);
        }
      }
      return sb.toString();
    }
  };

  static private OnPreferenceChangeListener ipAddrPrefListener = new OnPreferenceChangeListener() {
    @Override
    public boolean onPreferenceChange(Preference preference, Object newValue) {
      if (newValue instanceof String) {
        String v = (String) newValue;
        if (MyStringUtlis.isEmpty(v) == false) {
          Matcher m = IP_ADDR_PATTERN.matcher(v);
          if (m.matches() == false) {
            UIAct.toast(preference.getContext().getString(R.string.invalid_format));
          }
        }
      }
      return true;
    }
  };

  static private InputFilter maxlength15Filter = new InputFilter.LengthFilter(15);

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.preference);

    EditTextPreference ipAddrPref = (EditTextPreference) findPreference(getText(R.string.menu_key_ap_ip_addr));
    EditText ipAddr = ipAddrPref.getEditText();
    ipAddr.setFilters(new InputFilter[] { ipAddrFilter, maxlength15Filter });

    ipAddrPref.setOnPreferenceChangeListener(ipAddrPrefListener);
  }

  /**
   * ???????Preference?????????????????????????????
   */
  @Override
  public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
    super.onPreferenceTreeClick(preferenceScreen, preference);
    if (preference != null)
      if (preference instanceof PreferenceScreen)
        if (((PreferenceScreen) preference).getDialog() != null)
          ((PreferenceScreen) preference)
              .getDialog()
              .getWindow()
              .getDecorView()
              .setBackgroundDrawable(
                  this.getWindow().getDecorView().getBackground().getConstantState().newDrawable());
    return false;
  }

}
//

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