src/jp/gr/java_conf/ofnhwx/olib/base/BasePreferenceActivity.java

   1 package jp.gr.java_conf.ofnhwx.olib.base;
   2
   3 import android.content.SharedPreferences;
   4 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
   5 import android.os.Bundle;
   6 import android.preference.CheckBoxPreference;
   7 import android.preference.Preference;
   8 import android.preference.PreferenceActivity;
   9
  10 /**
  11  * {@link PreferenceActivity}のもと.
  12  * @author yuta
  13  */
  14 public abstract class BasePreferenceActivity extends PreferenceActivity {
  15
  16     OnSharedPreferenceChangeListener listener = null;
  17
  18     @Override
  19     protected void onCreate(Bundle savedInstanceState) {
  20         super.onCreate(savedInstanceState);
  21         if (this instanceof OnSharedPreferenceChangeListener) {
  22             listener = (OnSharedPreferenceChangeListener)this;
  23         }
  24     }
  25
  26     @Override
  27     protected void onResume() {
  28         super.onResume();
  29         if (listener != null) {
  30             SharedPreferences preferences = getPreferenceScreen().getSharedPreferences();
  31             preferences.registerOnSharedPreferenceChangeListener(listener);
  32         }
  33     }
  34
  35     @Override
  36     protected void onPause() {
  37         super.onPause();
  38         if (listener != null) {
  39             SharedPreferences preferences = getPreferenceScreen().getSharedPreferences();
  40             preferences.unregisterOnSharedPreferenceChangeListener(listener);
  41         }
  42     }
  43
  44     public void setChecked(int key, boolean checked) {
  45         CheckBoxPreference preference = findPreference(key);
  46         preference.setChecked(checked);
  47     }
  48
  49     @SuppressWarnings("unchecked")
  50     public <T extends Preference> T findPreference(String key) {
  51         return (T)super.findPreference(key);
  52     }
  53
  54     public <T extends Preference> T findPreference(int key) {
  55         return findPreference(getString(key));
  56     }
  57
  58 }