add bunch of new java APIs: mostly stubs or copied from AOSP

Many of these classes are only needed to be subclassed by androidx
support library, which is used in many android apps

src/api-impl/android/accounts/AccountManager.java

@@ -0,0 +1,5 @@
+package android.accounts;
+
+public class AccountManager {
+	
+}

src/api-impl/android/animation/Animator.java

@@ -0,0 +1,9 @@
+package android.animation;
+
+public class Animator {
+
+	public void setTarget(Object target) {}
+
+	public void start() {}
+	
+}

src/api-impl/android/animation/AnimatorInflater.java

@@ -0,0 +1,11 @@
+package android.animation;
+
+import android.content.Context;
+
+public class AnimatorInflater {
+
+	public static Animator loadAnimator(Context context, int resId) {
+		return new Animator();
+	}
+	
+}

src/api-impl/android/animation/AnimatorListenerAdapter.java

@@ -0,0 +1,56 @@
+/*
+ * 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 android.animation;
+
+/**
+ * This adapter class provides empty implementations of the methods from {@link android.animation.Animator.AnimatorListener}.
+ * Any custom listener that cares only about a subset of the methods of this listener can
+ * simply subclass this adapter class instead of implementing the interface directly.
+ */
+public abstract class AnimatorListenerAdapter /*implements Animator.AnimatorListener,
+		Animator.AnimatorPauseListener*/ {
+	/**
+	 * {@inheritDoc}
+	 */
+	public void onAnimationCancel(Animator animation) {
+	}
+	/**
+	 * {@inheritDoc}
+	 */
+	public void onAnimationEnd(Animator animation) {
+	}
+	/**
+	 * {@inheritDoc}
+	 */
+	public void onAnimationRepeat(Animator animation) {
+	}
+	/**
+	 * {@inheritDoc}
+	 */
+	public void onAnimationStart(Animator animation) {
+	}
+	/**
+	 * {@inheritDoc}
+	 */
+	public void onAnimationPause(Animator animation) {
+	}
+	/**
+	 * {@inheritDoc}
+	 */
+	public void onAnimationResume(Animator animation) {
+	}
+}

src/api-impl/android/animation/LayoutTransition.java

@@ -0,0 +1,5 @@
+package android.animation;
+
+public class LayoutTransition {
+	
+}

src/api-impl/android/animation/ValueAnimator.java

@@ -0,0 +1,33 @@
+package android.animation;
+
+public class ValueAnimator {
+
+	public static ValueAnimator ofFloat(float... values) {
+		return new ValueAnimator();
+	}
+
+	public ValueAnimator setDuration(long duration) {
+		return this;
+	}
+
+	public void addUpdateListener(AnimatorUpdateListener listener) {}
+
+	public static long getFrameDelay() {
+		return 20; // 20ms frame interval
+	}
+
+	/**
+	 * Implementors of this interface can add themselves as update listeners
+	 * to an <code>ValueAnimator</code> instance to receive callbacks on every animation
+	 * frame, after the current frame's values have been calculated for that
+	 * <code>ValueAnimator</code>.
+	 */
+	public static interface AnimatorUpdateListener {
+		/**
+		 * <p>Notifies the occurrence of another frame of the animation.</p>
+		 *
+		 * @param animation The animation which was repeated.
+		 */
+		void onAnimationUpdate(ValueAnimator animation);
+	}
+}

src/api-impl/android/app/Activity.java

@@ -1,5 +1,6 @@
 package android.app;
 
+import android.R;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
@@ -102,6 +103,7 @@ public class Activity extends Context {
 
 	protected void onCreate(Bundle savedInstanceState) {
 		System.out.println("- onCreate - yay!");
+		new ViewGroup(this).setId(R.id.content);
 
 		return;
 	}
@@ -263,6 +265,22 @@ public class Activity extends Context {
 		nativeFinish(getWindow().native_window);
 	}
 
+	public Object getLastNonConfigurationInstance() {
+		return null;
+	}
+
+	public FragmentManager getFragmentManager() {
+		return new FragmentManager();
+	}
+
+	public LayoutInflater getLayoutInflater() {
+		return layout_inflater;
+	}
+
+	public CharSequence getTitle() {
+		return "Title";
+	}
+
 	private native void nativeFinish(long native_window);
 	private static native void nativeStartActivity(Activity activity);
 }

src/api-impl/android/app/DownloadManager.java

@@ -0,0 +1,5 @@
+package android.app;
+
+public class DownloadManager {
+	
+}

src/api-impl/android/app/Fragment.java

@@ -0,0 +1,5 @@
+package android.app;
+
+public class Fragment {
+	
+}

src/api-impl/android/app/FragmentManager.java

@@ -0,0 +1,16 @@
+package android.app;
+
+public class FragmentManager {
+	
+	public Fragment findFragmentByTag(String tag) {
+		return null;
+	}
+
+	public FragmentTransaction beginTransaction() {
+		return new FragmentTransaction();
+	}
+
+	public boolean executePendingTransactions() {
+		return false;
+	}
+}

src/api-impl/android/app/FragmentTransaction.java

@@ -0,0 +1,12 @@
+package android.app;
+
+public class FragmentTransaction {
+	
+	public FragmentTransaction add(Fragment fragment, String string) {
+		return this;
+	}
+
+	public int commit() {
+		return 0;
+	}
+}

src/api-impl/android/app/SearchManager.java

@@ -0,0 +1,5 @@
+package android.app;
+
+public class SearchManager {
+	
+}

src/api-impl/android/app/UiModeManager.java

@@ -0,0 +1,10 @@
+package android.app;
+
+import android.content.res.Configuration;
+
+public class UiModeManager {
+	
+	public int getCurrentModeType() {
+		return Configuration.UI_MODE_TYPE_NORMAL;
+	}
+}

src/api-impl/android/app/WallpaperManager.java

@@ -0,0 +1,5 @@
+package android.app;
+
+public class WallpaperManager {
+	
+}

src/api-impl/android/app/admin/DevicePolicyManager.java

@@ -0,0 +1,5 @@
+package android.app.admin;
+
+public class DevicePolicyManager {
+	
+}

src/api-impl/android/content/Context.java

@@ -6,6 +6,7 @@ import android.app.Application;
 import android.app.KeyguardManager;
 import android.app.NotificationManager;
 import android.app.SharedPreferencesImpl;
+import android.app.UiModeManager;
 import android.content.BroadcastReceiver;
 import android.content.ClipboardManager;
 import android.content.Intent;
@@ -165,6 +166,8 @@ public class Context extends Object {
 				return new InputManager();
 			case "location":
 				return new LocationManager();
+			case "uimode":
+				return new UiModeManager();
 			default:
 				System.out.println("!!!!!!! getSystemService: case >" + name + "< is not implemented yet");
 				return null;
@@ -348,4 +351,8 @@ public class Context extends Object {
 	public void setTheme(int resId) {
 		theme.applyStyle(resId, true);
 	}
+
+	public final CharSequence getText(int resId) {
+		return getResources().getText(resId);
+	}
 }

src/api-impl/android/content/ContextWrapper.java

@@ -0,0 +1,14 @@
+package android.content;
+
+public class ContextWrapper extends Context {
+	private Context baseContext;
+
+	public ContextWrapper(Context baseContext) {
+		this.baseContext = baseContext;
+	}
+
+	public Context getBaseContext() {
+		return baseContext;
+	}
+	
+}

src/api-impl/android/content/Intent.java

@@ -185,6 +185,14 @@ public class Intent {
 		return component;
 	}
 
+	public boolean hasExtra(String name) {
+		return extras.containsKey(name);
+	}
+
+	public Serializable getSerializableExtra(String name) {
+		return (Serializable)extras.get(name);
+	}
+
 	@Override
 	public String toString() {
 		return "Intent [component=" + component + ", extras=" + extras + "]";

src/api-impl/android/content/pm/PackageManager.java

@@ -1337,6 +1337,34 @@ public class PackageManager {
 	 */
 	public static final String EXTRA_REQUEST_PERMISSION_PERMISSION_LIST = "android.content.pm.extra.PERMISSION_LIST";
 
+	// dummy certificate
+	public final static byte[] X509_DUMMY = (
+			"-----BEGIN CERTIFICATE-----\n" +
+			"MIIERjCCAy6gAwIBAgIJAIz+EYMBU6aQMA0GCSqGSIb3DQEBBQUAMIGiMQswCQYD\n" +
+			"VQQGEwJDQTELMAkGA1UECBMCQkMxEjAQBgNVBAcTCVZhbmNvdXZlcjEWMBQGA1UE\n" +
+			"ChMNd3d3LmN1Y2JjLmNvbTEUMBIGA1UECxQLY29tbW9uc19zc2wxHTAbBgNVBAMU\n" +
+			"FGRlbW9faW50ZXJtZWRpYXRlX2NhMSUwIwYJKoZIhvcNAQkBFhZqdWxpdXNkYXZp\n" +
+			"ZXNAZ21haWwuY29tMB4XDTA2MTIxMTE1MzE0MVoXDTI4MTEwNTE1MzE0MVowgaQx\n" +
+			"CzAJBgNVBAYTAlVTMREwDwYDVQQIEwhNYXJ5bGFuZDEUMBIGA1UEBxMLRm9yZXN0\n" +
+			"IEhpbGwxFzAVBgNVBAoTDmh0dHBjb21wb25lbnRzMRowGAYDVQQLExF0ZXN0IGNl\n" +
+			"cnRpZmljYXRlczEQMA4GA1UEAxMHZm9vLmNvbTElMCMGCSqGSIb3DQEJARYWanVs\n" +
+			"aXVzZGF2aWVzQGdtYWlsLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoC\n" +
+			"ggEBAMhjr5aCPoyp0R1iroWAfnEyBMGYWoCidH96yGPFjYLowez5aYKY1IOKTY2B\n" +
+			"lYho4O84X244QrZTRl8kQbYtxnGh4gSCD+Z8gjZ/gMvLUlhqOb+WXPAUHMB39GRy\n" +
+			"zerA/ZtrlUqf+lKo0uWcocxeRc771KN8cPH3nHZ0rV0Hx4ZAZy6U4xxObe4rtSVY\n" +
+			"07hNKXAb2odnVqgzcYiDkLV8ilvEmoNWMWrp8UBqkTcpEhYhCYp3cTkgJwMSuqv8\n" +
+			"BqnGd87xQU3FVZI4tbtkB+KzjD9zz8QCDJAfDjZHR03KNQ5mxOgXwxwKw6lGMaiV\n" +
+			"JTxpTKqym93whYk93l3ocEe55c0CAwEAAaN7MHkwCQYDVR0TBAIwADAsBglghkgB\n" +
+			"hvhCAQ0EHxYdT3BlblNTTCBHZW5lcmF0ZWQgQ2VydGlmaWNhdGUwHQYDVR0OBBYE\n" +
+			"FJ8Ud78/OrbKOIJCSBYs2tDLXofYMB8GA1UdIwQYMBaAFHua2o+QmU5S0qzbswNS\n" +
+			"yoemDT4NMA0GCSqGSIb3DQEBBQUAA4IBAQC3jRmEya6sQCkmieULcvx8zz1euCk9\n" +
+			"fSez7BEtki8+dmfMXe3K7sH0lI8f4jJR0rbSCjpmCQLYmzC3NxBKeJOW0RcjNBpO\n" +
+			"c2JlGO9auXv2GDP4IYiXElLJ6VSqc8WvDikv0JmCCWm0Zga+bZbR/EWN5DeEtFdF\n" +
+			"815CLpJZNcYwiYwGy/CVQ7w2TnXlG+mraZOz+owr+cL6J/ZesbdEWfjoS1+cUEhE\n" +
+			"HwlNrAu8jlZ2UqSgskSWlhYdMTAP9CPHiUv9N7FcT58Itv/I4fKREINQYjDpvQcx\n" +
+			"SaTYb9dr5sB4WLNglk7zxDtM80H518VvihTcP7FHL+Gn6g4j5fkI98+S\n" +
+			"-----END CERTIFICATE-----\n").getBytes();
+
 	/**
 	 * Retrieve overall information about an application package that is
 	 * installed on the system.
@@ -1374,7 +1402,7 @@ public class PackageManager {
 	public PackageInfo getPackageInfo(String packageName, int flags) throws NameNotFoundException {
 		PackageInfo packageInfo = new PackageInfo();
 		if ((flags & GET_SIGNATURES) == GET_SIGNATURES) {
-			packageInfo.signatures = new Signature[0];
+			packageInfo.signatures = new Signature[]{new Signature(X509_DUMMY)};
 		}
 		return packageInfo;
 	}

src/api-impl/android/database/Cursor.java

@@ -23,7 +23,6 @@ import android.os.Bundle;
 import java.io.Closeable;
 
 class CharArrayBuffer {}
-class DataSetObserver {}
 
 /**
  * This interface provides random read-write access to the result set returned