add switch for whether delete messages after existing chat room.

app/src/main/java/com/hyphenate/chatuidemo/DemoModel.java

@@ -226,6 +226,14 @@ public boolean isDeleteMessagesAsExitGroup() {
         return PreferenceManager.getInstance().isDeleteMessagesAsExitGroup();
     }
 
+    public void setDeleteMessagesAsExitChatRoom(boolean value) {
+        PreferenceManager.getInstance().setDeleteMessagesAsExitChatRoom(value);
+    }
+
+    public boolean isDeleteMessagesAsExitChatRoom() {
+        return PreferenceManager.getInstance().isDeleteMessagesAsExitChatRoom();
+    }
+
     public void setTransfeFileByUser(boolean value) {
         PreferenceManager.getInstance().setTransferFileByUser(value);
     }

app/src/main/java/com/hyphenate/chatuidemo/ui/SettingsFragment.java

@@ -91,6 +91,7 @@ public class SettingsFragment extends Fragment implements OnClickListener {
 	private RelativeLayout rl_switch_chatroom_leave;
 
     private RelativeLayout rl_switch_delete_msg_when_exit_group;
+    private RelativeLayout rl_switch_delete_msg_when_exit_chat_room;
 	private RelativeLayout rl_set_transfer_file_by_userself;
 	private RelativeLayout rl_set_autodownload_thumbnail;
 	private RelativeLayout rl_switch_auto_accept_group_invitation;
@@ -120,6 +121,7 @@ public class SettingsFragment extends Fragment implements OnClickListener {
     private EaseSwitchButton speakerSwitch;
     private EaseSwitchButton ownerLeaveSwitch;
     private EaseSwitchButton switch_delete_msg_when_exit_group;
+    private EaseSwitchButton switch_delete_msg_when_exit_chat_room;
 	private EaseSwitchButton set_transfer_file_by_userself;
 	private EaseSwitchButton set_autodownload_thumbnail;
 	private EaseSwitchButton switch_auto_accept_group_invitation;
@@ -149,6 +151,7 @@ public void onActivityCreated(Bundle savedInstanceState) {
 		rl_switch_speaker = (RelativeLayout) getView().findViewById(R.id.rl_switch_speaker);
 		rl_switch_chatroom_leave = (RelativeLayout) getView().findViewById(R.id.rl_switch_chatroom_owner_leave);
 		rl_switch_delete_msg_when_exit_group = (RelativeLayout) getView().findViewById(R.id.rl_switch_delete_msg_when_exit_group);
+		rl_switch_delete_msg_when_exit_chat_room = (RelativeLayout) getView().findViewById(R.id.rl_switch_delete_msg_when_exit_chat_room);
 		rl_set_transfer_file_by_userself = (RelativeLayout) getView().findViewById(R.id.rl_set_transfer_file_by_userself);
 		rl_set_autodownload_thumbnail = (RelativeLayout) getView().findViewById(R.id.rl_set_autodownload_thumbnail);
 		rl_switch_auto_accept_group_invitation = (RelativeLayout) getView().findViewById(R.id.rl_switch_auto_accept_group_invitation);
@@ -172,6 +175,7 @@ public void onActivityCreated(Bundle savedInstanceState) {
 		speakerSwitch = (EaseSwitchButton) getView().findViewById(R.id.switch_speaker);
 		ownerLeaveSwitch = (EaseSwitchButton) getView().findViewById(R.id.switch_owner_leave);
 		switch_delete_msg_when_exit_group = (EaseSwitchButton) getView().findViewById(R.id.switch_delete_msg_when_exit_group);
+		switch_delete_msg_when_exit_chat_room = (EaseSwitchButton) getView().findViewById(R.id.switch_delete_msg_when_exit_chat_room);
 		set_transfer_file_by_userself = (EaseSwitchButton) getView().findViewById(R.id.set_transfer_file_by_userself);
 		set_autodownload_thumbnail = (EaseSwitchButton) getView().findViewById(R.id.set_autodownload_thumbnail);
 		switch_auto_accept_group_invitation = (EaseSwitchButton) getView().findViewById(R.id.switch_auto_accept_group_invitation);
@@ -212,6 +216,7 @@ public void onActivityCreated(Bundle savedInstanceState) {
 		pushNick.setOnClickListener(this);
 		rl_switch_chatroom_leave.setOnClickListener(this);
 		rl_switch_delete_msg_when_exit_group.setOnClickListener(this);
+		rl_switch_delete_msg_when_exit_chat_room.setOnClickListener(this);
 		rl_set_transfer_file_by_userself.setOnClickListener(this);
 		rl_set_autodownload_thumbnail.setOnClickListener(this);
 		rl_switch_auto_accept_group_invitation.setOnClickListener(this);
@@ -269,6 +274,13 @@ public void onActivityCreated(Bundle savedInstanceState) {
 		    switch_delete_msg_when_exit_group.closeSwitch();
 		}
 
+		// delete messages when exit chat room?
+		if(settingsModel.isDeleteMessagesAsExitChatRoom()){
+		    switch_delete_msg_when_exit_chat_room.openSwitch();
+		} else {
+			switch_delete_msg_when_exit_chat_room.closeSwitch();
+		}
+
 		if(settingsModel.isSetTransferFileByUser()){
 			set_transfer_file_by_userself.openSwitch();
 		} else {
@@ -404,6 +416,17 @@ public void onClick(View v) {
 					chatOptions.setDeleteMessagesAsExitGroup(true);
 				}
 				break;
+			case R.id.rl_switch_delete_msg_when_exit_chat_room:
+				if(switch_delete_msg_when_exit_chat_room.isSwitchOpen()){
+					switch_delete_msg_when_exit_chat_room.closeSwitch();
+					settingsModel.setDeleteMessagesAsExitChatRoom(false);
+					chatOptions.setDeleteMessagesAsExitChatRoom(false);
+				}else{
+					switch_delete_msg_when_exit_chat_room.openSwitch();
+					settingsModel.setDeleteMessagesAsExitChatRoom(true);
+					chatOptions.setDeleteMessagesAsExitChatRoom(true);
+				}
+				break;
 			case R.id.rl_set_transfer_file_by_userself:
 				if(set_transfer_file_by_userself.isSwitchOpen()){
 					set_transfer_file_by_userself.closeSwitch();

app/src/main/java/com/hyphenate/chatuidemo/utils/PreferenceManager.java

@@ -33,6 +33,7 @@ public class PreferenceManager {
 
 	private static String SHARED_KEY_SETTING_CHATROOM_OWNER_LEAVE = "shared_key_setting_chatroom_owner_leave";
     private static String SHARED_KEY_SETTING_DELETE_MESSAGES_WHEN_EXIT_GROUP = "shared_key_setting_delete_messages_when_exit_group";
+    private static String SHARED_KEY_SETTING_DELETE_MESSAGES_WHEN_EXIT_CHAT_ROOM = "shared_key_setting_delete_messages_when_exit_chat_room";
 	private static String SHARED_KEY_SETTING_TRANSFER_FILE_BY_USER = "shared_key_setting_transfer_file_by_user";
 	private static String SHARED_KEY_SETTING_AUTODOWNLOAD_THUMBNAIL = "shared_key_setting_autodownload_thumbnail";
 	private static String SHARED_KEY_SETTING_AUTO_ACCEPT_GROUP_INVITATION = "shared_key_setting_auto_accept_group_invitation";
@@ -153,6 +154,15 @@ public boolean isDeleteMessagesAsExitGroup() {
         return mSharedPreferences.getBoolean(SHARED_KEY_SETTING_DELETE_MESSAGES_WHEN_EXIT_GROUP, true);
     }
 
+    public void setDeleteMessagesAsExitChatRoom(boolean value){
+        editor.putBoolean(SHARED_KEY_SETTING_DELETE_MESSAGES_WHEN_EXIT_CHAT_ROOM, value);
+        editor.apply();
+    }
+
+    public boolean isDeleteMessagesAsExitChatRoom() {
+        return mSharedPreferences.getBoolean(SHARED_KEY_SETTING_DELETE_MESSAGES_WHEN_EXIT_CHAT_ROOM, true);
+    }
+
 	public void setTransferFileByUser(boolean value) {
 		editor.putBoolean(SHARED_KEY_SETTING_TRANSFER_FILE_BY_USER, value);
 		editor.apply();

app/src/main/res/layout/em_fragment_conversation_settings.xml

@@ -564,6 +564,31 @@
                     android:layout_centerVertical="true" />
             </RelativeLayout>
 
+            <RelativeLayout
+                android:id="@+id/rl_switch_delete_msg_when_exit_chat_room"
+                android:layout_width="match_parent"
+                android:layout_height="50dip"
+                android:background="@drawable/em_btn_bottom_selector"
+                android:padding="10dip" >
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_centerVertical="true"
+                    android:paddingLeft="10dip"
+                    android:text="@string/delete_msg_when_exit_chat_room"
+                    android:textColor="@android:color/black"
+                    android:textSize="14sp"
+                    android:typeface="serif" />
+
+                <com.hyphenate.easeui.widget.EaseSwitchButton
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:id="@+id/switch_delete_msg_when_exit_chat_room"
+                    android:layout_alignParentRight="true"
+                    android:layout_centerVertical="true" />
+            </RelativeLayout>
+
             <RelativeLayout
                 android:id="@+id/rl_set_transfer_file_by_userself"
                 android:layout_width="match_parent"

app/src/main/res/values-zh/em_strings.xml

@@ -320,6 +320,7 @@
     <string name="join_public_group">加入公开群</string>
     <string name="chatroom_allow_owner_leave"> 允许聊天室群主离开</string>
     <string name="delete_msg_when_exit_group">退出群组时删除聊天数据</string>
+    <string name="delete_msg_when_exit_chat_room">退出聊天室时删除聊天数据</string>
     <string name="set_transfer_file_by_userself">无需用户实现上传下载</string>
     <string name="set_autodownload_thumbnail">是否自动下载缩略图附件</string>
     <string name="auto_accept_group_invitation">自动同意群组加群邀请</string>

app/src/main/res/values/em_strings.xml

@@ -320,6 +320,7 @@
     <string name="join_public_group">Join public group</string>
     <string name="chatroom_allow_owner_leave">Allow channel owner leave</string>
     <string name="delete_msg_when_exit_group">Delete messages when exit group</string>
+    <string name="delete_msg_when_exit_chat_room">Delete messages when exit chat room</string>
     <string name="set_transfer_file_by_userself">No need to implement transfer file function by user</string>
     <string name="set_autodownload_thumbnail">Autodownload thumbnail or not</string>
     <string name="auto_accept_group_invitation">Auto accept group invitation</string>