Hangga Aji Sayekti 
Ini adalah sebuah halaman Prefference yang biasa dipakai untuk halaman setting pada aplikasi-aplikasi Android. Bukan mustahil menerapkan slide to left/ slide to right untuk berpindah ke prefference yg berbeda. Caranya adalah mengkombinasika PrefferenceFragment, ViewPager dan ViewPagerIndicator.
Step by step
1. Pastikan Anda sudah menggunakan library ActionbarSherlock dan ViewPagerIndicator.
dan android-support-v13.jar
2. Kita perlu membuat kelas PreferenceFragment di abstract dari PreferenceFragment milik Android. Lalu simpan di package kita.
package com.hangga.slidepreffdemo;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import org.xmlpull.v1.XmlPullParser;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Fragment;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.Preference;
import android.preference.PreferenceGroup;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.util.Base64;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnKeyListener;
import android.widget.ListView;
@SuppressLint("NewApi")
public abstract class PreferenceFragment extends Fragment {
private static final String PREFERENCES_TAG = "android:preferences";
private PreferenceManager mPreferenceManager;
private ListView mList;
private boolean mHavePrefs;
private boolean mInitDone;
/**
* The starting request code given out to preference framework.
*/
private static final int FIRST_REQUEST_CODE = 100;
private static final int MSG_BIND_PREFERENCES = 1;
@SuppressLint("HandlerLeak")
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_BIND_PREFERENCES:
bindPreferences();
break;
}
}
};
final private Runnable mRequestFocus = new Runnable() {
public void run() {
mList.focusableViewAvailable(mList);
}
};
/**
* Interface that PreferenceFragment's containing activity should
* implement to be able to process preference items that wish to
* switch to a new fragment.
*/
public interface OnPreferenceStartFragmentCallback {
/**
* Called when the user has clicked on a Preference that has
* a fragment class name associated with it. The implementation
* to should instantiate and switch to an instance of the given
* fragment.
*/
boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// FIXME: mPreferenceManager = new PreferenceManager(getActivity(), FIRST_REQUEST_CODE);
mPreferenceManager = callConstructor(PreferenceManager.class,
new Class[] { Activity.class, int.class },
new Object[] { getActivity(), FIRST_REQUEST_CODE });
// FIXME: mPreferenceManager.setFragment(this);
}
public static final String LAYOUT =
"AwAIABgEAAABABwA0AEAABQAAAAAAAAAAAEAAGwAAAAAAAAAAAAAAA4AAAAeAAAALQAAADoAAAA/" +
"AAAATwAAAFwAAABsAAAAegAAAIkAAACaAAAAqgAAAL4AAADPAAAA8gAAAPwAAAApAQAALAEAAEoB" +
"AAALC29yaWVudGF0aW9uAA0NbGF5b3V0X2hlaWdodAAMDGxheW91dF93aWR0aAAKCmJhY2tncm91" +
"bmQAAgJpZAANDWxheW91dF93ZWlnaHQACgpwYWRkaW5nVG9wAA0NcGFkZGluZ0JvdHRvbQALC3Bh" +
"ZGRpbmdMZWZ0AAwMcGFkZGluZ1JpZ2h0AA4Oc2Nyb2xsYmFyU3R5bGUADQ1jbGlwVG9QYWRkaW5n" +
"ABERZHJhd1NlbGVjdG9yT25Ub3AADg5jYWNoZUNvbG9ySGludAAgIHNjcm9sbGJhckFsd2F5c0Ry" +
"YXdWZXJ0aWNhbFRyYWNrAAcHYW5kcm9pZAAqKmh0dHA6Ly9zY2hlbWFzLmFuZHJvaWQuY29tL2Fw" +
"ay9yZXMvYW5kcm9pZAAAAAAbG2FuZHJvaWQud2lkZ2V0LkxpbmVhckxheW91dAAXF2FuZHJvaWQu" +
"d2lkZ2V0Lkxpc3RWaWV3AIABCABEAAAAxAABAfUAAQH0AAEB1AABAdAAAQGBAQEB1wABAdkAAQHW" +
"AAEB2AABAX8AAQHrAAEB/AABAQEBAQFpAAEBAAEQABgAAAACAAAA/////w8AAAAQAAAAAgEQAHQA" +
"AAACAAAA//////////8SAAAAFAAUAAQAAAAAAAAAEAAAAAAAAAD/////CAAAEAEAAAAQAAAAAwAA" +
"AP////8IAAABDQAGARAAAAACAAAA/////wgAABD/////EAAAAAEAAAD/////CAAAEP////8CARAA" +
"KAEAAAgAAAD//////////xMAAAAUABQADQAAAAAAAAAQAAAADgAAAP////8IAAAS/////xAAAAAK" +
"AAAA/////wgAABEAAAACEAAAAAQAAAD/////CAAAAQoAAgEQAAAACAAAAP////8IAAAFARAAABAA" +
"AAAGAAAA/////wgAAAUBAAAAEAAAAAkAAAD/////CAAABQEQAAAQAAAABwAAAP////8IAAAFAQAA" +
"ABAAAAALAAAA/////wgAABIAAAAAEAAAAAIAAAD/////CAAAEP////8QAAAAAQAAAP////8IAAAF" +
"AAAAABAAAAAMAAAA/////wgAABIAAAAAEAAAAA0AAAD/////CAAAAQ0ABgEQAAAABQAAAP////8I" +
"AAAEAACAPwMBEAAYAAAAFAAAAP//////////EwAAAAMBEAAYAAAAFgAAAP//////////EgAAAAEB" +
"EAAYAAAAFgAAAP////8PAAAAEAAAAA==";
/**
* return XmlPullParser
* @param xml compiled XML encoded in base64
* @return XmlPullParser
*/
public static XmlPullParser getParser(String xml) {
try {
byte[] data = Base64.decode(xml, Base64.DEFAULT);
// XmlBlock block = new XmlBlock(LAYOUT.getBytes("UTF-8"));
Class<?> clazz = Class.forName("android.content.res.XmlBlock");
Constructor<?> constructor = clazz.getDeclaredConstructor(byte[].class);
constructor.setAccessible(true);
Object block = constructor.newInstance(data);
// XmlPullParser parser = block.newParser();
Method method = clazz.getDeclaredMethod("newParser");
method.setAccessible(true);
return (XmlPullParser) method.invoke(block);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (java.lang.InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
return null;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(getParser(LAYOUT), container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if (mHavePrefs) {
bindPreferences();
}
mInitDone = true;
if (savedInstanceState != null) {
Bundle container = savedInstanceState.getBundle(PREFERENCES_TAG);
if (container != null) {
final PreferenceScreen preferenceScreen = getPreferenceScreen();
if (preferenceScreen != null) {
preferenceScreen.restoreHierarchyState(container);
}
}
}
}
@Override
public void onStart() {
super.onStart();
// FIXME: mPreferenceManager.setOnPreferenceTreeClickListener(this);
try {
Class<?> clazz = Class.forName("android.preference.PreferenceManager$OnPreferenceTreeClickListener");
Object proxy = Proxy.newProxyInstance(clazz.getClassLoader(), new Class[] { clazz }, new InvocationHandler() {
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if (method.getName().equals("onPreferenceTreeClick")) {
return onPreferenceTreeClick((PreferenceScreen) args[0], (Preference) args[1]);
}
return null;
}
});
callVoidMethod(mPreferenceManager, "setOnPreferenceTreeClickListener", new Class[] { clazz }, new Object[] { proxy });
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
@Override
public void onStop() {
super.onStop();
// FIXME: mPreferenceManager.dispatchActivityStop();
callVoidMethod(mPreferenceManager, "dispatchActivityStop", null, null);
// FIXME: mPreferenceManager.setOnPreferenceTreeClickListener(null);
try {
Class<?> clazz = Class.forName("android.preference.PreferenceManager$OnPreferenceTreeClickListener");
callVoidMethod(mPreferenceManager, "setOnPreferenceTreeClickListener", new Class[] { clazz }, new Object[] { null });
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
@Override
public void onDestroyView() {
mList = null;
mHandler.removeCallbacks(mRequestFocus);
mHandler.removeMessages(MSG_BIND_PREFERENCES);
super.onDestroyView();
}
@Override
public void onDestroy() {
super.onDestroy();
// FIXME: mPreferenceManager.dispatchActivityDestroy();
callVoidMethod(mPreferenceManager, "dispatchActivityDestroy", null, null);
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
final PreferenceScreen preferenceScreen = getPreferenceScreen();
if (preferenceScreen != null) {
Bundle container = new Bundle();
preferenceScreen.saveHierarchyState(container);
outState.putBundle(PREFERENCES_TAG, container);
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// FIXME: mPreferenceManager.dispatchActivityResult(requestCode, resultCode, data);
callVoidMethod(mPreferenceManager, "dispatchActivityResult",
new Class[] { int.class, int.class, Intent.class },
new Object[] { requestCode, resultCode, data });
}
/**
* Returns the {@link PreferenceManager} used by this fragment.
* @return The {@link PreferenceManager}.
*/
public PreferenceManager getPreferenceManager() {
return mPreferenceManager;
}
/**
* Sets the root of the preference hierarchy that this fragment is showing.
*
* @param preferenceScreen The root {@link PreferenceScreen} of the preference hierarchy.
*/
public void setPreferenceScreen(PreferenceScreen preferenceScreen) {
// FIXME: if (mPreferenceManager.setPreferences(preferenceScreen) && preferenceScreen != null) {
if (callReturnMethod(mPreferenceManager, "setPreferences", Boolean.class,
new Class[] { PreferenceScreen.class }, new Object[] { preferenceScreen }) && preferenceScreen != null) {
mHavePrefs = true;
if (mInitDone) {
postBindPreferences();
}
}
}
/**
* Gets the root of the preference hierarchy that this fragment is showing.
*
* @return The {@link PreferenceScreen} that is the root of the preference
* hierarchy.
*/
public PreferenceScreen getPreferenceScreen() {
// FIXME: return mPreferenceManager.getPreferenceScreen();
return callReturnMethod(mPreferenceManager, "getPreferenceScreen", PreferenceScreen.class, null, null);
}
/**
* Adds preferences from activities that match the given {@link Intent}.
*
* @param intent The {@link Intent} to query activities.
*/
public void addPreferencesFromIntent(Intent intent) {
requirePreferenceManager();
// FIXME: setPreferenceScreen(mPreferenceManager.inflateFromIntent(intent, getPreferenceScreen()));
setPreferenceScreen(callReturnMethod(mPreferenceManager, "inflateFromIntent", PreferenceScreen.class,
new Class[] { Intent.class, PreferenceScreen.class },
new Object[] { intent, getPreferenceScreen() }));
}
/**
* Inflates the given XML resource and adds the preference hierarchy to the current
* preference hierarchy.
*
* @param preferencesResId The XML resource ID to inflate.
*/
public void addPreferencesFromResource(int preferencesResId) {
requirePreferenceManager();
// FIXME: setPreferenceScreen(mPreferenceManager.inflateFromResource(getActivity(),
// preferencesResId, getPreferenceScreen()));
setPreferenceScreen(callReturnMethod(mPreferenceManager, "inflateFromResource", PreferenceScreen.class,
new Class[] { Context.class, int.class, PreferenceScreen.class },
new Object[] { getActivity(), preferencesResId, getPreferenceScreen() }));
}
/**
* {@inheritDoc}
*/
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
Preference preference) {
// FIXME: preference.getFragment()
if (/*preference.getFragment() != null &&*/
getActivity() instanceof OnPreferenceStartFragmentCallback) {
return ((OnPreferenceStartFragmentCallback)getActivity()).onPreferenceStartFragment(
this, preference);
}
return false;
}
/**
* Finds a {@link Preference} based on its key.
*
* @param key The key of the preference to retrieve.
* @return The {@link Preference} with the key, or null.
* @see PreferenceGroup#findPreference(CharSequence)
*/
public Preference findPreference(CharSequence key) {
if (mPreferenceManager == null) {
return null;
}
return mPreferenceManager.findPreference(key);
}
private void requirePreferenceManager() {
if (mPreferenceManager == null) {
throw new RuntimeException("This should be called after super.onCreate.");
}
}
private void postBindPreferences() {
if (mHandler.hasMessages(MSG_BIND_PREFERENCES)) return;
mHandler.obtainMessage(MSG_BIND_PREFERENCES).sendToTarget();
}
private void bindPreferences() {
final PreferenceScreen preferenceScreen = getPreferenceScreen();
if (preferenceScreen != null) {
preferenceScreen.bind(getListView());
}
}
/** @hide */
public ListView getListView() {
ensureList();
return mList;
}
private void ensureList() {
if (mList != null) {
return;
}
View root = getView();
if (root == null) {
throw new IllegalStateException("Content view not yet created");
}
View rawListView = root.findViewById(android.R.id.list);
if (!(rawListView instanceof ListView)) {
throw new RuntimeException(
"Content has view with id attribute 'android.R.id.list' "
+ "that is not a ListView class");
}
mList = (ListView)rawListView;
if (mList == null) {
throw new RuntimeException(
"Your content must have a ListView whose id attribute is " +
"'android.R.id.list'");
}
mList.setOnKeyListener(mListOnKeyListener);
mHandler.post(mRequestFocus);
}
private OnKeyListener mListOnKeyListener = new OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
Object selectedItem = mList.getSelectedItem();
if (selectedItem instanceof Preference) {
View selectedView = mList.getSelectedView();
// FIXME : return ((Preference)selectedItem).onKey(
// selectedView, keyCode, event);
return callReturnMethod(selectedItem, "onKey", Boolean.class,
new Class[] { View.class, int.class, KeyEvent.class },
new Object[] { selectedView, keyCode, event });
}
return false;
}
};
public static void callVoidMethod(Object receiver, String methodName, Class<?>[] parameterTypes, Object[] args) {
try {
Method method = receiver.getClass().getDeclaredMethod(methodName, parameterTypes);
method.setAccessible(true);
method.invoke(receiver, args);
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
@SuppressWarnings("unchecked")
public static <T> T callReturnMethod(Object receiver, String methodName, Class<T> returnType, Class<?>[] parameterTypes, Object[] args) {
try {
Method method = receiver.getClass().getDeclaredMethod(methodName, parameterTypes);
method.setAccessible(true);
return (T) method.invoke(receiver, args);
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
if (Boolean.class.equals(returnType)) {
return (T) Boolean.FALSE;
}
return null;
}
@SuppressWarnings("unchecked")
public static <T> T callConstructor(Class<T> returnType, Class<?>[] parameterTypes, Object[] args) {
try {
Constructor<?> constructor = returnType.getDeclaredConstructor(parameterTypes);
constructor.setAccessible(true);
return (T) constructor.newInstance(args);
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (java.lang.InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
return null;
}
}
2. Kemudian membuat fragmentnya. Saya beri nama PaijoFragment.
<pre class="brush:xml"><?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android"
android:key="myScreen" >
<EditTextPreference
android:key="name"
android:title="Nama Minuman"
android:summary="Nama Minuman"
android:enabled="true"/>
<PreferenceCategory
android:key="group"
android:title="Teh" >
<EditTextPreference
android:key="merk"
android:title="Merek Teh"
android:summary="Sari Harum"/>
<EditTextPreference
android:key="merk"
android:title="Merek Teh"
android:summary="Sosro"/>
</PreferenceCategory>
<PreferenceCategory
android:key="group"
android:title="Kopi" >
<EditTextPreference
android:key="merk"
android:title="Merek Kopi"
android:summary="Kapal Merah"/>
<EditTextPreference
android:key="merk"
android:title="Merek Kopi"
android:summary="Kopi Luwak"/>
<EditTextPreference
android:key="merk"
android:title="Merek Kopi"
android:summary="Torabika"/>
</PreferenceCategory>
</PreferenceScreen>
package com.hangga.slidepreffdemo;
import android.os.Bundle;
public class PaijoFragment extends PreferenceFragment{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preff_kopi);
}
}
3. Kemudian FragmentAdapternya.
package com.hangga.slidepreffdemo;
import android.support.v13.app.FragmentPagerAdapter;
/*import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
*/
public class PaijoFragmentAdapter extends FragmentPagerAdapter{
PaijoFragment paijoFragment;
public PaijoFragmentAdapter(android.app.FragmentManager fm) {
super(fm);
}
@Override
public PreferenceFragment getItem(int arg0) {
return new PaijoFragment();
}
@Override
public int getCount() {
return 5; // misal jumlah page nya 5
}
}
4. Tinggal pasangâŠ
<pre class="brush:xml"><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="0dp"
>
<com.viewpagerindicator.CirclePageIndicator
android:id="@+id/indicator"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dp"
android:layout_alignParentTop="true"
android:background="@android:color/black" />
<android.support.v4.view.ViewPager
android:id="@+id/pgMain"
android:layout_below="@+id/indicator"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="0dp"
>
</android.support.v4.view.ViewPager>
</RelativeLayout>
package com.hangga.slidepreffdemo;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.viewpagerindicator.CirclePageIndicator;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
public class MainActivity extends SherlockFragmentActivity {
android.app.FragmentManager fm = getFragmentManager();
PaijoFragmentAdapter paijoFragmentAdapter;
ViewPager pgMain;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pgMain = (ViewPager) findViewById(R.id.pgMain);
paijoFragmentAdapter = new PaijoFragmentAdapter(fm);
pgMain.setAdapter(paijoFragmentAdapter);
pgMain.setCurrentItem(0);
CirclePageIndicator indicator = (CirclePageIndicator) findViewById(R.id.indicator);
indicator.setViewPager(pgMain);
indicator.setCurrentItem(0);
}
}
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