/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.achep.base.utils;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.preference.Preference;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.support.annotation.NonNull;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
/**
* Created by Artem Chepurnoy on 05.01.2015.
*/
public final class PreferenceManagerUtils {
/**
* Interface definition for a callback to be invoked when a
* {@link android.preference.Preference} in the hierarchy rooted at this {@link android.preference.PreferenceScreen} is
* clicked.
*/
public interface OnPreferenceTreeClickListener {
/**
* Called when a preference in the tree rooted at this
* {@link android.preference.PreferenceScreen} has been clicked.
*
* @param preferenceScreen The {@link android.preference.PreferenceScreen} that the
* preference is located in.
* @param preference The preference that was clicked.
* @return Whether the click was handled.
*/
boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference);
}
@NonNull
public static PreferenceManager newInstance(@NonNull Activity activity, int firstRequestCode) {
try {
Constructor<PreferenceManager> c = PreferenceManager.class
.getDeclaredConstructor(Activity.class, int.class);
c.setAccessible(true);
return c.newInstance(activity, firstRequestCode);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Sets the callback to be invoked when a {@link android.preference.Preference} in the
* hierarchy rooted at this {@link android.preference.PreferenceManager} is clicked.
*
* @param listener The callback to be invoked.
*/
public static void setOnPreferenceTreeClickListener(@NonNull PreferenceManager manager,
final PreferenceManagerUtils.OnPreferenceTreeClickListener listener) {
try {
Field onPreferenceTreeClickListener = PreferenceManager.class
.getDeclaredField("mOnPreferenceTreeClickListener");
onPreferenceTreeClickListener.setAccessible(true);
if (listener != null) {
Object proxy = Proxy.newProxyInstance(
onPreferenceTreeClickListener.getType().getClassLoader(),
new Class[]{onPreferenceTreeClickListener.getType()},
new InvocationHandler() {
public Object invoke(Object proxy, Method method, Object[] args) {
if (method.getName().equals("onPreferenceTreeClick")) {
PreferenceScreen ps = (PreferenceScreen) args[0];
Preference p = (Preference) args[1];
return listener.onPreferenceTreeClick(ps, p);
} else {
return null;
}
}
});
onPreferenceTreeClickListener.set(manager, proxy);
} else {
onPreferenceTreeClickListener.set(manager, null);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Inflates a preference hierarchy from the preference hierarchies of
* {@link android.app.Activity Activities} that match the given {@link android.content.Intent}. An
* {@link android.app.Activity} defines its preference hierarchy with meta-data using
* the {@link android.preference.PreferenceManager#METADATA_KEY_PREFERENCES} key.
* <p/>
* If a preference hierarchy is given, the new preference hierarchies will
* be merged in.
*
* @param queryIntent The intent to match activities.
* @param rootPreferences Optional existing hierarchy to merge the new
* hierarchies into.
* @return The root hierarchy (if one was not provided, the new hierarchy's
* root).
*/
public static PreferenceScreen inflateFromIntent(@NonNull PreferenceManager manager,
Intent queryIntent,
PreferenceScreen rootPreferences) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("inflateFromIntent",
Intent.class,
PreferenceScreen.class);
m.setAccessible(true);
return (PreferenceScreen) m.invoke(manager, queryIntent, rootPreferences);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Inflates a preference hierarchy from XML. If a preference hierarchy is
* given, the new preference hierarchies will be merged in.
*
* @param context The context of the resource.
* @param resId The resource ID of the XML to inflate.
* @param rootPreferences Optional existing hierarchy to merge the new
* hierarchies into.
* @return The root hierarchy (if one was not provided, the new hierarchy's
* root).
*/
public static PreferenceScreen inflateFromResource(@NonNull PreferenceManager manager,
Context context, int resId,
PreferenceScreen rootPreferences) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("inflateFromResource",
Context.class, int.class, PreferenceScreen.class);
m.setAccessible(true);
return (PreferenceScreen) m.invoke(manager, context, resId, rootPreferences);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Returns the root of the preference hierarchy managed by this class.
*
* @return The {@link android.preference.PreferenceScreen} object that is at the root of the hierarchy.
*/
public static PreferenceScreen getPreferenceScreen(@NonNull PreferenceManager manager) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("getPreferenceScreen");
m.setAccessible(true);
return (PreferenceScreen) m.invoke(manager);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Called by the {@link android.preference.PreferenceManager} to dispatch a subactivity result.
*/
public static void dispatchActivityResult(@NonNull PreferenceManager manager,
int requestCode, int resultCode,
Intent data) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityResult",
int.class, int.class, Intent.class);
m.setAccessible(true);
m.invoke(manager, requestCode, resultCode, data);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Called by the {@link android.preference.PreferenceManager} to dispatch the activity stop
* event.
*/
public static void dispatchActivityStop(@NonNull PreferenceManager manager) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityStop");
m.setAccessible(true);
m.invoke(manager);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Called by the {@link android.preference.PreferenceManager} to dispatch the activity destroy
* event.
*/
public static void dispatchActivityDestroy(@NonNull PreferenceManager manager) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityDestroy");
m.setAccessible(true);
m.invoke(manager);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Sets the root of the preference hierarchy.
*
* @param preferenceScreen The root {@link android.preference.PreferenceScreen} of the preference hierarchy.
* @return Whether the {@link android.preference.PreferenceScreen} given is different than the previous.
*/
public static boolean setPreferences(@NonNull PreferenceManager manager,
PreferenceScreen preferenceScreen) {
try {
Method m = PreferenceManager.class
.getDeclaredMethod("setPreferences", PreferenceScreen.class);
m.setAccessible(true);
return ((Boolean) m.invoke(manager, preferenceScreen));
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}