net.robotmedia.billing.utils.Compatibility Maven / Gradle / Ivy

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/*
 * Copyright 2013 serso aka se.solovyev
 *
 * 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.
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 * Contact details
 *
 * Email: [email protected]
 * Site:  http://se.solovyev.org
 */

package net.robotmedia.billing.utils;

import android.app.Activity;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.IntentSender;
import android.util.Log;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class Compatibility {

	@Nullable
	private static Method activityMethod;

	@Nullable
	private static Method contextMethod;

	public static int START_NOT_STICKY;

	@SuppressWarnings("rawtypes")
	private static final Class[] START_INTENT_SENDER_SIGNATURE = new Class[]{IntentSender.class, Intent.class, int.class, int.class, int.class};
	private static final String TAG = "BillingCompatibility";

	static {
		initCompatibility();
	}

	private static void initCompatibility() {
		try {
			final Field field = Service.class.getField("START_NOT_STICKY");
			START_NOT_STICKY = field.getInt(null);
		} catch (Exception e) {
			Log.e(TAG, e.getMessage(), e);
			START_NOT_STICKY = 2;
		}

		activityMethod = initMethod(Activity.class);
		contextMethod = initMethod(Context.class);
	}

	@Nullable
	private static Method initMethod(@Nonnull Class clazz) {
		Method result;

		try {
			result = clazz.getMethod("startIntentSender", START_INTENT_SENDER_SIGNATURE);
		} catch (SecurityException e) {
			Log.e(TAG, e.getMessage(), e);
			result = null;
		} catch (NoSuchMethodException e) {
			Log.e(TAG, e.getMessage(), e);
			result = null;
		}

		return result;
	}

	public static void startIntentSender(@Nonnull Context context,
										 @Nonnull IntentSender intentSender,
										 @Nullable Intent intent) {
		if (context instanceof Activity) {
			startIntentSender0(context, intentSender, intent, activityMethod);
		} else {
			startIntentSender0(context, intentSender, intent, contextMethod);
		}
	}

	private static void startIntentSender0(@Nonnull Context context,
										   @Nonnull IntentSender intentSender,
										   @Nullable Intent intent,
										   @Nullable Method method) {
		if (method != null) {

			final Object[] args = new Object[5];
			args[0] = intentSender;
			args[1] = intent;
			args[2] = 0;
			args[3] = 0;
			args[4] = 0;

			try {
				method.invoke(context, args);
			} catch (Exception e) {
				Log.e(TAG, "startIntentSender", e);
			}
		}
	}

	public static boolean isStartIntentSenderSupported(@Nonnull Context context) {
		if (context instanceof Activity) {
			return activityMethod != null;
		} else {
			return contextMethod != null;
		}
	}
}