学習日記--PreferenceFragmentテスト

一、Javaコード
2つのクラスを作成する必要があります.MyFragmentはPreferenceFragmentを継承する必要があります.
1、MyFragment

package com.hxzy.preferenceactivity;

import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.os.Bundle;
import android.preference.EditTextPreference;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.util.Log;
import android.widget.Toast;

public class MyFragment extends PreferenceFragment{

	private MyOnSharePreferenceChangeListener mOnSharePreferenceChangeListener = new MyOnSharePreferenceChangeListener();
	private final String A_KEY = "edittext_key_1";
	private final String LIST_KEY = "list_key_1";
	private EditTextPreference mEditTextPreference;
	private ListPreference mListPreference;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		this.addPreferencesFromResource(R.xml.preferences);

		//  
		SharedPreferences mSharePreferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
		String s = mSharePreferences.getString("edittext_key_1", " ");
		Boolean b = mSharePreferences.getBoolean("checkbox_key_1", true);
		Log.d("edittext_key_1", s);
		Log.d("checkbox_key_1", b + "");
		mSharePreferences.registerOnSharedPreferenceChangeListener(mOnSharePreferenceChangeListener);

		//  。 PreferenceActivity 
		//  EditText mEditText=findViewById(R.id.editText)，key id；
		mEditTextPreference = (EditTextPreference) findPreference(A_KEY);
		mEditTextPreference.setSummary(s);

		mListPreference = (ListPreference) findPreference(LIST_KEY);
	}

	@Override
	public void onPause() {
		super.onPause();
		getPreferenceScreen().getSharedPreferences()
				.unregisterOnSharedPreferenceChangeListener(mOnSharePreferenceChangeListener);
	}

	@Override
	public void onResume() {
		super.onResume();
		getPreferenceScreen().getSharedPreferences()
				.registerOnSharedPreferenceChangeListener(mOnSharePreferenceChangeListener);
	}

	//  
	@Override
	public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
		Toast.makeText(getActivity(), preference.getSummary(), Toast.LENGTH_LONG).show();
		return false;
	}

	private class MyOnSharePreferenceChangeListener implements OnSharedPreferenceChangeListener {

		@Override
		public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
			Toast.makeText(getActivity(), key, 0).show();
			if (key.equals(A_KEY))
				
			{
				String s = sharedPreferences.getString(A_KEY, "null");
				mEditTextPreference.setSummary(s);
			}
			if (key.equals(LIST_KEY)) {
				String e = mListPreference.getEntry() + "";
				String v = mListPreference.getValue() + "";
				mListPreference.setSummary(e + ":" + v);

			}
		}

	}
}

2、MainActivity

package com.hxzy.preferenceactivity;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		
		this.getFragmentManager().beginTransaction()
		.replace(android.R.id.content, new MyFragment())
		.commit();
	}
}

二、
res/xmlディレクトリの下のpreferences.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >

    <PreferenceCategory android:title="[first group])" >
        <EditTextPreference
            android:defaultValue="111111"
            android:key="edittext_key_1"
            android:summary="editview summary"
            android:title="edittext title" />

        <ListPreference
            android:dialogIcon="@drawable/a"
            android:dialogTitle="list dialog title"
            android:entries="@array/citys"
            android:entryValues="@array/citys_code"
            android:icon="@drawable/ic_launcher"
            android:key="list_key_1"
            android:summary="list summary"
            android:title="list title" />
        <!-- defaultValue true ，false  -->
        <CheckBoxPreference
            android:defaultValue="false"
            android:key="checkbox_key_1"
            android:summary="checkbox summary"
            android:title="checkbox title" />
    </PreferenceCategory>

    <Preference
        android:summary="preference summary"
        android:title="preference title" />

    <PreferenceCategory
        android:defaultValue="aaaaaa"
        android:key="secondgroup_key"
        android:summary="secondgroup summary"
        android:title="[second group]" >
        <CheckBoxPreference
            android:defaultValue="true"
            android:key="checkbox_key_2"
            android:summary="checkbox summary"
            android:title="checkbox title" />

        <EditTextPreference
            android:defaultValue="bbbbbbbbb"
            android:key="edittext_key_2"
            android:summary="edittext summary"
            android:title="edittext title" />
    </PreferenceCategory>

    <Preference
        android:summary="http://blog.csdn.net/zhangphil"
        android:title=" " >
        <intent
            android:action="android.intent.action.VIEW"
            android:data="http://blog.csdn.net/zhangphil" />
    </Preference>

    <!--   -->
    <PreferenceScreen
        android:key="preference_screen_key_2"
        android:persistent="true"
        android:title="preference screen 2" >
        <EditTextPreference
            android:defaultValue="cccccc"
            android:key="edittext_key_3"
            android:summary="second summary"
            android:title="second title" />
    </PreferenceScreen>
    <PreferenceScreen
        android:key="preference_screen_key_3"
        android:persistent="true"
        android:title="preference screen 3" >
        <EditTextPreference
            android:defaultValue="ccccccd"
            android:key="edittext_key_4"
            android:summary="second summary"
            android:title="second title" />
    </PreferenceScreen>

    <SwitchPreference
        android:defaultValue="fffff"
        android:key="SwitchPreference_key"
        android:summary="SwitchPreference summary"
        android:title="SwitchPreference title" />

</PreferenceScreen>

三、
必要なres/values/arrays.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string-array name="citys">
        <item> </item>
        <item> </item>
        <item> </item>
    </string-array>

    <string-array name="citys_code">
        <item>028</item>
        <item>010</item>
        <item>021</item>
    </string-array>
</resources>