Block the Play Store from opening unexpectedly (from dubious ad networks)

ActivityWithAds.java

package com.levelup.touiteur;

import java.lang.reflect.Field;
import java.util.HashMap;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Instrumentation;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.PatternMatcher;
import android.text.TextUtils;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.ViewGroup;

public abstract class ActivityWith_Ads extends Activity {

	private final static String TAG = "AdSafe";
	private final static boolean HAS_ADS = true;

	/**
	 * Extra field you should put on your external browser Intents to make sure they're not blocked
	 */
	public static final String EXTRA_BYPASS_BLOCK = "com.levelup.touiteur.extra.urlbypass";

	private static final IntentFilter badIntentFilters[];
	/**
	 * The {@link android.app.Instrumentation Instrumentation} of the process where filters are added
	 */
	private static Instrumentation mInstrumentation;
	/**
	 * The list of {@link android.app.Instrumentation.ActivityMonitor ActivityMonitor} currently registered to block some intents
	 * for the whole process
	 */
	private static Instrumentation.ActivityMonitor registeredMonitors[];

	/**
	 * Flag to indicate an ad was clicked so the resulting Intent launched is OK
	 */
	private static boolean adClicked;

	static {
		// intents from the Play Store manifest
		IntentFilter playStoreAssetBrowser = new IntentFilter();
		playStoreAssetBrowser.addAction(Intent.ACTION_MAIN);
		playStoreAssetBrowser.addAction(Intent.ACTION_SEARCH);
		playStoreAssetBrowser.addCategory(Intent.CATEGORY_LAUNCHER);
		playStoreAssetBrowser.addCategory("android.intent.category.APP_MARKET"); // Intent.CATEGORY_APP_MARKET
		playStoreAssetBrowser.addCategory(Intent.CATEGORY_DEFAULT);

		IntentFilter playStoreMarket = new IntentFilter();
		playStoreMarket.addAction(Intent.ACTION_VIEW);
		playStoreMarket.addAction("android.nfc.action.NDEF_DISCOVERED");
		playStoreMarket.addAction("com.google.android.finsky.NAVIGATIONAL_SUGGESTION");
		playStoreMarket.addCategory(Intent.CATEGORY_BROWSABLE);
		playStoreMarket.addCategory(Intent.CATEGORY_DEFAULT);
		playStoreMarket.addDataScheme("market");
		playStoreMarket.addDataAuthority("search", null);
		playStoreMarket.addDataPath("/", PatternMatcher.PATTERN_LITERAL);
		playStoreMarket.addDataScheme("http");
		playStoreMarket.addDataAuthority("market.android.com", null);
		playStoreMarket.addDataPath("/", PatternMatcher.PATTERN_LITERAL);
		playStoreMarket.addDataScheme("http");
		playStoreMarket.addDataAuthority("market.android.com", null);
		playStoreMarket.addDataPath("/", PatternMatcher.PATTERN_PREFIX);
		playStoreMarket.addDataScheme("https");
		playStoreMarket.addDataAuthority("market.android.com", null);
		playStoreMarket.addDataPath("/", PatternMatcher.PATTERN_LITERAL);
		playStoreMarket.addDataScheme("https");
		playStoreMarket.addDataAuthority("market.android.com", null);
		playStoreMarket.addDataPath("/", PatternMatcher.PATTERN_PREFIX);

		IntentFilter playStoreStore = new IntentFilter();
		playStoreStore.addAction(Intent.ACTION_VIEW);
		playStoreStore.addAction("android.nfc.action.NDEF_DISCOVERED");
		playStoreStore.addCategory(Intent.CATEGORY_BROWSABLE);
		playStoreStore.addCategory(Intent.CATEGORY_DEFAULT);
		playStoreStore.addDataScheme("http");
		playStoreStore.addDataAuthority("play.google.com", null);
		playStoreStore.addDataPath("/store", PatternMatcher.PATTERN_PREFIX);
		playStoreStore.addDataScheme("https");
		playStoreStore.addDataAuthority("play.google.com", null);
		playStoreStore.addDataPath("/store", PatternMatcher.PATTERN_PREFIX);
		playStoreStore.addDataScheme("http");
		playStoreStore.addDataAuthority("play.google.com", null);
		playStoreStore.addDataPath("/redeem", PatternMatcher.PATTERN_PREFIX);
		playStoreStore.addDataScheme("https");
		playStoreStore.addDataAuthority("play.google.com", null);
		playStoreStore.addDataPath("/redeem", PatternMatcher.PATTERN_PREFIX);

		IntentFilter playStorePurchase = new IntentFilter();
		playStorePurchase.addAction("com.android.vending.billing.PURCHASE");
		playStorePurchase.addCategory(Intent.CATEGORY_DEFAULT);

		badIntentFilters = new IntentFilter[] { playStoreAssetBrowser, playStoreMarket, playStoreStore, playStorePurchase, };
	}

	private static boolean isBadIntent(Context context, Intent intent) {
		if (null != intent.getComponent() && TextUtils.equals(intent.getComponent().getPackageName(), context.getPackageName())) {
			// this intent is launching some of our activities
			if (TextUtils.equals(intent.getComponent().getClassName(), "com.admarvel.android.ads.AdMarvelActivity")) {
				Intent testIntent = new Intent(Intent.ACTION_VIEW);
				testIntent.addCategory(Intent.CATEGORY_BROWSABLE);
				testIntent.setData(Uri.parse(intent.getStringExtra("url")));
				intent = testIntent; // fall through to test the target that wasn't clicked
			} else if (TextUtils.equals(intent.getComponent().getClassName(), "com.admarvel.android.ads.AdMarvelVideoActivity")) {
				// this Intent was launched without the user clicking in the ad area
				Log.e(TAG, "AdMarvelVideoActivity launched without click intent:" + intent + " extras:" + intent.getExtras());
			} else if (TextUtils.equals(intent.getComponent().getClassName(), "com.google.ads.AdActivity")) {
				Bundle adData = intent.getBundleExtra("com.google.ads.AdOpener");
				if ("intent".equals(adData.get("action"))) {
					Object params = adData.get("params");
					if (params instanceof HashMap) {
						Intent testIntent = new Intent(Intent.ACTION_VIEW);
						testIntent.addCategory(Intent.CATEGORY_BROWSABLE);
						testIntent.setData(Uri.parse(((HashMap<String, String>) params).get("u")));
						intent = testIntent; // fall through to test the target that wasn't clicked
					}
				}
			} else if (TextUtils.equals(intent.getComponent().getClassName(), "com.millennialmedia.android.MMActivity")) {
				// this Intent was launched without the user clicking in the ad area
				Log.e(TAG, "MMActivity launched without click intent:" + intent + " extras:" + intent.getExtras());
			} else if (TextUtils.equals(intent.getComponent().getClassName(), "com.millennialmedia.android.VideoPlayer")) {
				// this Intent was launched without the user clicking in the ad area
				Log.e(TAG, "VideoPlayer launched without click intent:" + intent + " extras:" + intent.getExtras());
			} else {
				return false; // all other activities we know about should not be blocked
			}
		}

		ContentResolver resolver = context.getContentResolver();
		for (IntentFilter monitor : badIntentFilters) {
			if (monitor.match(resolver, intent, true, "IntentBlock") >= 0) {
				Log.d(TAG, "bad intent detected intent:" + intent + " extras:" + intent.getExtras());
				return true;
			}
		}
		return false;
	}

	public static boolean isIntentLegal(Context context, Intent intent) {
		if (adClicked || intent.hasExtra(EXTRA_BYPASS_BLOCK))
			return true;

		return !isBadIntent(context, intent);
	}

	@Override
	public void startActivityForResult(Intent intent, int requestCode) {
		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
			// it will be done in the other version otherwise
			if (isIntentLegal(this, intent)) {
				unregisterIntentBlockers();
			}
		}

		super.startActivityForResult(intent, requestCode);
	}

	@SuppressLint("NewApi")
	@Override
	public void startActivityForResult(Intent intent, int requestCode, Bundle options) {
		if (isIntentLegal(this, intent)) {
			unregisterIntentBlockers();
		}

		super.startActivityForResult(intent, requestCode, options);
	}

	public static void registerIntentBlockers() {
		if (null != mInstrumentation && null == registeredMonitors) {
			Log.v(TAG, "register intent blockers in " + mInstrumentation);
			registeredMonitors = new Instrumentation.ActivityMonitor[badIntentFilters.length];
			for (int i = 0; i < badIntentFilters.length; ++i) {
				registeredMonitors[i] = new Instrumentation.ActivityMonitor(badIntentFilters[i], null, true);
				mInstrumentation.addMonitor(registeredMonitors[i]);
			}
		}
	}

	public static void unregisterIntentBlockers() {
		if (null != mInstrumentation && null != registeredMonitors) {
			Log.v(TAG, "unregister intent blockers in " + mInstrumentation);
			for (int i = 0; i < registeredMonitors.length; ++i) {
				mInstrumentation.removeMonitor(registeredMonitors[i]);
			}
			registeredMonitors = null;
		}
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.id.MainLayout);

		ViewGroup mAdGroup = (ViewGroup) findViewById(R.id.AdItem);
		if (!HAS_ADS) {// || !InvisiblePreferences.getInstance().getBoolean(InvisiblePreferences.Show_Ads)) {
			((ViewGroup) mAdGroup.getParent()).removeView(mAdGroup);
			mAdGroup = null;
		} else {
			mAdGroup.setVisibility(View.GONE);
			View adClick = mAdGroup.findViewById(R.id.adClick);
			adClick.setOnTouchListener(new OnTouchListener() {
				@Override
				public boolean onTouch(View v, MotionEvent event) {
					// ad touched
					adClicked = true;
					return false;
				}
			});
		}
	}

	@Override
	protected void onStart() {
		adClicked = false;
		if (HAS_ADS) {
			try {
				Field instrumentationField = Activity.class.getDeclaredField("mInstrumentation");
				instrumentationField.setAccessible(true);
				Instrumentation instrumentation = (Instrumentation) instrumentationField.get(this);
				Log.v(TAG, this + " Found instrumentation:" + instrumentation);
				if (null == mInstrumentation) {
					mInstrumentation = instrumentation;
				} else if (mInstrumentation != instrumentation) {
					Log.d(TAG, this + " different instrumentation:" + instrumentation + " was:" + mInstrumentation);
					unregisterIntentBlockers();
					mInstrumentation = instrumentation;
				}
				registerIntentBlockers();
				if (null == mInstrumentation) {
					Log.d(TAG, "Could not find instrumentation in " + this);
				}
			} catch (NoSuchFieldException e) {
				Log.d(TAG, "Failed to get the activity instrumentation in " + this, e);
			} catch (IllegalAccessException e) {
				Log.d(TAG, "Failed to get the activity instrumentation in " + this, e);
			} catch (IllegalArgumentException e) {
				Log.d(TAG, "Failed to get the activity instrumentation in " + this, e);
			}
		}

		super.onStart();
	}

	@Override
	public void setIntent(Intent newIntent) {
		if (null == newIntent) {
			Log.e(TAG, "Intent blockers are not compatible with an Activity that has no intent set");
			newIntent = new Intent();
		}
		super.setIntent(newIntent);
	}
}

Launch URL.java

Intent launchIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
launchIntent.putExtra(ActivityWithAds.EXTRA_BYPASS_BLOCK, true); // make sure we're not blocked
launchIntent.addCategory(Intent.CATEGORY_BROWSABLE);
if (null!=referrer)
	launchIntent.putExtra("android.intent.extra.REFERRER", referrer);
launchIntent.putExtra(Browser.EXTRA_APPLICATION_ID, activity.getPackageName());
activity.startActivity(launchIntent);

MainLayout.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="150dip" >

    <com.admarvel.android.ads.AdMarvelView
        android:id="@+id/adMarcel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal" />

    <View
        android:id="@+id/adClick"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />

</FrameLayout>

MyApp.java

package com.levelup.touiteur;

import android.annotation.SuppressLint;
import android.app.Application;
import android.content.Intent;
import android.os.Bundle;

public class MyApp extends Application {

	@Override
	public void startActivity(Intent intent) {
		if (ActivityWithAds.isIntentLegal(this, intent)) {
			ActivityWithAds.unregisterIntentBlockers();
			super.startActivity(intent);
		}
	}

	@SuppressLint("NewApi")
	@Override
	public void startActivity(Intent intent, Bundle options) {
		if (ActivityWithAds.isIntentLegal(this, intent)) {
			ActivityWithAds.unregisterIntentBlockers();
			super.startActivity(intent, options);
		}
	}
}