add Java APIs needed for WhatsApp MainActivity and ConversationActivity

src/api-impl/android/text/Editable.java

@@ -2,7 +2,15 @@ package android.text;
 
 public interface Editable extends CharSequence {
 
-	public class Factory {}
+	public class Factory {
+		public static Factory getInstance() {
+			return new Factory();
+		}
+
+		public Editable newEditable(CharSequence source) {
+			return new SpannableStringBuilder(source);
+		}
+	}
 
 	public Editable replace(int start, int end, CharSequence source, int destoff, int destlen);
 

src/api-impl/android/text/Layout.java

@@ -27,4 +27,6 @@ public class Layout {
 	public int getHeight() {return 10;}
 
 	public void draw(Canvas canvas) {}
+
+	public int getParagraphDirection(int line) {return 0;}
 }

src/api-impl/android/text/format/Time.java

@@ -0,0 +1,8 @@
+package android.text.format;
+
+public class Time {
+
+	public long gmtoff = 0;
+
+	public void set(long millis) {}
+}

src/api-impl/android/text/method/TextKeyListener.java

@@ -0,0 +1,8 @@
+package android.text.method;
+
+import android.text.Editable;
+
+public class TextKeyListener {
+
+	public static void clear(Editable content) {}
+}

src/api-impl/android/text/style/AbsoluteSizeSpan.java

@@ -0,0 +1,4 @@
+package android.text.style;
+
+public class AbsoluteSizeSpan {
+}

src/api-impl/android/text/style/LeadingMarginSpan.java

@@ -1,3 +1,6 @@
 package android.text.style;
 
-public interface LeadingMarginSpan {}
+public interface LeadingMarginSpan {
+
+	public static class Standard implements LeadingMarginSpan {}
+}

src/api-impl/android/text/style/StrikethroughSpan.java

@@ -0,0 +1,4 @@
+package android.text.style;
+
+public class StrikethroughSpan {
+}

src/api-impl/android/text/style/UpdateLayout.java

@@ -0,0 +1,4 @@
+package android.text.style;
+
+public interface UpdateLayout {
+}