diff --git a/library/src/main/java/android/content/Context.java b/library/src/main/java/android/content/Context.java
new file mode 100644
index 0000000..f27638c
--- /dev/null
+++ b/library/src/main/java/android/content/Context.java
@@ -0,0 +1,7 @@
+package android.content;
+
+/**
+ * Created by Carlos on 5/9/2018.
+ */
+
+public class Context {}
diff --git a/library/src/main/java/android/support/v7/preference/CheckBoxPreference.java b/library/src/main/java/android/support/v7/preference/CheckBoxPreference.java
new file mode 100644
index 0000000..7d503ec
--- /dev/null
+++ b/library/src/main/java/android/support/v7/preference/CheckBoxPreference.java
@@ -0,0 +1,9 @@
+package android.support.v7.preference;
+
+import android.content.Context;
+
+public class CheckBoxPreference extends Preference {
+
+    public CheckBoxPreference(Context context) { throw new RuntimeException("Stub!"); }
+
+}
diff --git a/library/src/main/java/android/support/v7/preference/DialogPreference.java b/library/src/main/java/android/support/v7/preference/DialogPreference.java
new file mode 100644
index 0000000..a4cc7cc
--- /dev/null
+++ b/library/src/main/java/android/support/v7/preference/DialogPreference.java
@@ -0,0 +1,21 @@
+package android.support.v7.preference;
+
+public abstract class DialogPreference extends Preference {
+
+    public CharSequence getDialogTitle() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setDialogTitle(CharSequence dialogTitle) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public CharSequence getDialogMessage() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setDialogMessage(CharSequence dialogMessage) {
+        throw new RuntimeException("Stub!");
+    }
+
+}
diff --git a/library/src/main/java/android/support/v7/preference/EditTextPreference.java b/library/src/main/java/android/support/v7/preference/EditTextPreference.java
new file mode 100644
index 0000000..f5eb9d6
--- /dev/null
+++ b/library/src/main/java/android/support/v7/preference/EditTextPreference.java
@@ -0,0 +1,19 @@
+package android.support.v7.preference;
+
+import android.content.Context;
+
+public class EditTextPreference extends DialogPreference {
+
+    public EditTextPreference(Context context) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public String getText() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setText(String text) {
+        throw new RuntimeException("Stub!");
+    }
+
+}
diff --git a/library/src/main/java/android/support/v7/preference/ListPreference.java b/library/src/main/java/android/support/v7/preference/ListPreference.java
new file mode 100644
index 0000000..3ca948d
--- /dev/null
+++ b/library/src/main/java/android/support/v7/preference/ListPreference.java
@@ -0,0 +1,43 @@
+package android.support.v7.preference;
+
+import android.content.Context;
+
+public class ListPreference extends Preference {
+
+    public ListPreference(Context context) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public CharSequence[] getEntries() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setEntries(CharSequence[] entries) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public int findIndexOfValue(String value) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public CharSequence[] getEntryValues() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setEntryValues(CharSequence[] entryValues) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setValueIndex(int index) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public String getValue() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setValue(String value) {
+        throw new RuntimeException("Stub!");
+    }
+
+}
diff --git a/library/src/main/java/android/support/v7/preference/Preference.java b/library/src/main/java/android/support/v7/preference/Preference.java
new file mode 100644
index 0000000..1884e02
--- /dev/null
+++ b/library/src/main/java/android/support/v7/preference/Preference.java
@@ -0,0 +1,53 @@
+package android.support.v7.preference;
+
+public class Preference {
+
+    public void setOnPreferenceChangeListener(OnPreferenceChangeListener onPreferenceChangeListener) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setOnPreferenceClickListener(OnPreferenceClickListener onPreferenceClickListener) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public CharSequence getTitle() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setTitle(CharSequence title) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public CharSequence getSummary() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setSummary(CharSequence summary) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setEnabled(boolean enabled)  {
+        throw new RuntimeException("Stub!");
+    }
+
+    public String getKey() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setKey(String key) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setDefaultValue(Object defaultValue) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public interface OnPreferenceChangeListener {
+        boolean onPreferenceChange(Preference preference, Object newValue);
+    }
+
+    public interface OnPreferenceClickListener {
+        boolean onPreferenceClick(Preference preference);
+    }
+
+}
diff --git a/library/src/main/java/android/support/v7/preference/PreferenceScreen.java b/library/src/main/java/android/support/v7/preference/PreferenceScreen.java
new file mode 100644
index 0000000..cfb9da4
--- /dev/null
+++ b/library/src/main/java/android/support/v7/preference/PreferenceScreen.java
@@ -0,0 +1,15 @@
+package android.support.v7.preference;
+
+import android.content.Context;
+
+public class PreferenceScreen {
+
+    public boolean addPreference(Preference preference) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public Context getContext() {
+        throw new RuntimeException("Stub!");
+    }
+
+}
diff --git a/library/src/main/java/android/support/v7/preference/TwoStatePreference.java b/library/src/main/java/android/support/v7/preference/TwoStatePreference.java
new file mode 100644
index 0000000..ef21669
--- /dev/null
+++ b/library/src/main/java/android/support/v7/preference/TwoStatePreference.java
@@ -0,0 +1,25 @@
+package android.support.v7.preference;
+
+import android.content.Context;
+
+public class TwoStatePreference extends Preference {
+
+    public TwoStatePreference(Context context) { throw new RuntimeException("Stub!"); }
+
+    public boolean isChecked() { throw new RuntimeException("Stub!"); }
+
+    public void setChecked(boolean checked) { throw new RuntimeException("Stub!"); }
+
+    public CharSequence getSummaryOn() { throw new RuntimeException("Stub!"); }
+
+    public void setSummaryOn(CharSequence summary) { throw new RuntimeException("Stub!"); }
+
+    public CharSequence getSummaryOff() { throw new RuntimeException("Stub!"); }
+
+    public void setSummaryOff(CharSequence summary) { throw new RuntimeException("Stub!"); }
+
+    public boolean getDisableDependentsState() { throw new RuntimeException("Stub!"); }
+
+    public void setDisableDependentsState(boolean disableDependentsState) { throw new RuntimeException("Stub!"); }
+
+}
diff --git a/library/src/main/java/androidx/preference/CheckBoxPreference.java b/library/src/main/java/androidx/preference/CheckBoxPreference.java
new file mode 100644
index 0000000..6c986ab
--- /dev/null
+++ b/library/src/main/java/androidx/preference/CheckBoxPreference.java
@@ -0,0 +1,11 @@
+package androidx.preference;
+
+import android.content.Context;
+
+public class CheckBoxPreference extends Preference {
+
+    public CheckBoxPreference(Context context) {
+        throw new RuntimeException("Stub!");
+    }
+
+}
diff --git a/library/src/main/java/androidx/preference/DialogPreference.java b/library/src/main/java/androidx/preference/DialogPreference.java
new file mode 100644
index 0000000..5a884ef
--- /dev/null
+++ b/library/src/main/java/androidx/preference/DialogPreference.java
@@ -0,0 +1,21 @@
+package androidx.preference;
+
+public abstract class DialogPreference extends Preference {
+
+    public CharSequence getDialogTitle() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setDialogTitle(CharSequence dialogTitle) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public CharSequence getDialogMessage() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setDialogMessage(CharSequence dialogMessage) {
+        throw new RuntimeException("Stub!");
+    }
+
+}
diff --git a/library/src/main/java/androidx/preference/EditTextPreference.java b/library/src/main/java/androidx/preference/EditTextPreference.java
new file mode 100644
index 0000000..2d9814e
--- /dev/null
+++ b/library/src/main/java/androidx/preference/EditTextPreference.java
@@ -0,0 +1,19 @@
+package androidx.preference;
+
+import android.content.Context;
+
+public class EditTextPreference extends DialogPreference {
+
+    public EditTextPreference(Context context) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public String getText() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setText(String text) {
+        throw new RuntimeException("Stub!");
+    }
+
+}
diff --git a/library/src/main/java/androidx/preference/ListPreference.java b/library/src/main/java/androidx/preference/ListPreference.java
new file mode 100644
index 0000000..51ba95f
--- /dev/null
+++ b/library/src/main/java/androidx/preference/ListPreference.java
@@ -0,0 +1,43 @@
+package androidx.preference;
+
+import android.content.Context;
+
+public class ListPreference extends Preference {
+
+    public ListPreference(Context context) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public CharSequence[] getEntries() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setEntries(CharSequence[] entries) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public int findIndexOfValue(String value) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public CharSequence[] getEntryValues() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setEntryValues(CharSequence[] entryValues) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setValueIndex(int index) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public String getValue() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setValue(String value) {
+        throw new RuntimeException("Stub!");
+    }
+
+}
diff --git a/library/src/main/java/androidx/preference/Preference.java b/library/src/main/java/androidx/preference/Preference.java
new file mode 100644
index 0000000..502c39f
--- /dev/null
+++ b/library/src/main/java/androidx/preference/Preference.java
@@ -0,0 +1,53 @@
+package androidx.preference;
+
+public class Preference {
+
+    public void setOnPreferenceChangeListener(OnPreferenceChangeListener onPreferenceChangeListener) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setOnPreferenceClickListener(OnPreferenceClickListener onPreferenceClickListener) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public CharSequence getTitle() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setTitle(CharSequence title) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public CharSequence getSummary() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setSummary(CharSequence summary) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setEnabled(boolean enabled)  {
+        throw new RuntimeException("Stub!");
+    }
+
+    public String getKey() {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setKey(String key) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public void setDefaultValue(Object defaultValue) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public interface OnPreferenceChangeListener {
+        boolean onPreferenceChange(Preference preference, Object newValue);
+    }
+
+    public interface OnPreferenceClickListener {
+        boolean onPreferenceClick(Preference preference);
+    }
+
+}
diff --git a/library/src/main/java/androidx/preference/PreferenceScreen.java b/library/src/main/java/androidx/preference/PreferenceScreen.java
new file mode 100644
index 0000000..38e31e6
--- /dev/null
+++ b/library/src/main/java/androidx/preference/PreferenceScreen.java
@@ -0,0 +1,15 @@
+package androidx.preference;
+
+import android.content.Context;
+
+public class PreferenceScreen {
+
+    public boolean addPreference(Preference preference) {
+        throw new RuntimeException("Stub!");
+    }
+
+    public Context getContext() {
+        throw new RuntimeException("Stub!");
+    }
+
+}
diff --git a/library/src/main/java/androidx/preference/TwoStatePreference.java b/library/src/main/java/androidx/preference/TwoStatePreference.java
new file mode 100644
index 0000000..6d05656
--- /dev/null
+++ b/library/src/main/java/androidx/preference/TwoStatePreference.java
@@ -0,0 +1,25 @@
+package androidx.preference;
+
+import android.content.Context;
+
+public class TwoStatePreference extends Preference {
+
+    public TwoStatePreference(Context context) { throw new RuntimeException("Stub!"); }
+
+    public boolean isChecked() { throw new RuntimeException("Stub!"); }
+
+    public void setChecked(boolean checked) { throw new RuntimeException("Stub!"); }
+
+    public CharSequence getSummaryOn() { throw new RuntimeException("Stub!"); }
+
+    public void setSummaryOn(CharSequence summary) { throw new RuntimeException("Stub!"); }
+
+    public CharSequence getSummaryOff() { throw new RuntimeException("Stub!"); }
+
+    public void setSummaryOff(CharSequence summary) { throw new RuntimeException("Stub!"); }
+
+    public boolean getDisableDependentsState() { throw new RuntimeException("Stub!"); }
+
+    public void setDisableDependentsState(boolean disableDependentsState) { throw new RuntimeException("Stub!"); }
+
+}
diff --git a/library/src/main/java/eu/kanade/tachiyomi/source/ConfigurableSource.kt b/library/src/main/java/eu/kanade/tachiyomi/source/ConfigurableSource.kt
new file mode 100644
index 0000000..fb8ed4e
--- /dev/null
+++ b/library/src/main/java/eu/kanade/tachiyomi/source/ConfigurableSource.kt
@@ -0,0 +1,9 @@
+package eu.kanade.tachiyomi.source
+
+interface ConfigurableSource {
+
+    fun setupPreferenceScreen(screen: android.support.v7.preference.PreferenceScreen)
+
+    fun setupPreferenceScreen(screen: androidx.preference.PreferenceScreen )
+
+}