CMUpdate: Switch to DownloadManager, major cleanup and fixes

Changes include:
  - Integrating the ApplyUpdate stuff into the main activity
  - Fixing some additional bugs relating to activities
  - This change includes a squashed commit by Nebkat with
    Change-Id: I55567e83d5c4df4883aa457a4cab58a123f4b388
  - When checking for downloaded zips, ignore folders
  - Make sure updateLayout is called after user accepts dialog
  - Remove unused custom exception
  - Switch over to DownloadManager
  - Remove unused services/aidls
  - Fix a couple of derps
  - Added MD5 checking of downloaded file
  - When reinstantiating, check if previous download was successful
    and update preference accordingly
  - Added BroadcastReceivers for the DownloadManager
  - Fix restart of app not recognizing inprogress download
  - Prevent multiple downloads on app restart
  - Added back isStorageRemovable check, renamed as isAlternateStorage
  - Moved MD5 checking to BroadcastReceiver
  - Fix in-progress url and md5 state preservation between app restarts
  - Hide backup rom functionality until better solution is found
  - Add user-agent to API and download requests

Credit to Devatwork and Nebkat for their help

Change-Id: I6a11d383c489b1bbf4fbcf4e198db3f208b0fe75

Author: DvTonder

Android.mk

@@ -4,10 +4,8 @@ include $(CLEAR_VARS)
 LOCAL_MODULE_TAGS := optional
 
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
-LOCAL_SRC_FILES += src/com/cyanogenmod/updater/interfaces/IDownloadServiceCallback.aidl \
-		src/com/cyanogenmod/updater/interfaces/IUpdateCheckServiceCallback.aidl \
-		src/com/cyanogenmod/updater/interfaces/IUpdateCheckService.aidl \
-		src/com/cyanogenmod/updater/interfaces/IDownloadService.aidl
+LOCAL_SRC_FILES += src/com/cyanogenmod/updater/interfaces/IUpdateCheckServiceCallback.aidl \
+		src/com/cyanogenmod/updater/interfaces/IUpdateCheckService.aidl
 
 LOCAL_PACKAGE_NAME := CMUpdater
 

AndroidManifest.xml

@@ -1,7 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.cyanogenmod.updater"
-    android:versionCode="1"
-    android:versionName="1.0" >
+    android:versionCode="2"
+    android:versionName="2.0" >
 
     <uses-sdk
         android:minSdkVersion="16"
@@ -31,34 +31,33 @@
             </intent-filter>
         </activity>
 
-        <activity
-            android:name=".ApplyUpdate"
-            android:configChanges="orientation|screenSize|keyboardHidden"
-            android:launchMode="singleTop"
-            android:excludeFromRecents="true" >
-        </activity>
-
         <service android:name="com.cyanogenmod.updater.service.UpdateCheckService"
                  android:process="com.cyanogenmod.updater.updater.service.UpdateCheckService">
             <intent-filter>
                 <action android:name="com.cyanogenmod.updater.interfaces.IUpdateCheckService"/>
             </intent-filter>
         </service>
 
-        <service android:name="com.cyanogenmod.updater.service.DownloadService"
-                 android:process="com.cyanogenmod.updater.service.DownloadService">
+        <receiver android:name="com.cyanogenmod.updater.receiver.StartupReceiver">
             <intent-filter>
-                <action android:name="com.cyanogenmod.updater.interfaces.IDownloadService"/>
+                <action android:name="android.intent.action.BOOT_COMPLETED"/>
+                <category android:name="android.intent.category.HOME"/>
             </intent-filter>
-        </service>
+        </receiver>
+        <receiver android:name="com.cyanogenmod.updater.receiver.DownloadCompletedReceiver">
+            <intent-filter>
+                <action android:name="android.intent.action.DOWNLOAD_COMPLETE"/>
+                <category android:name="android.intent.category.HOME"/>
+            </intent-filter>
+        </receiver>
 
-        <receiver android:name="com.cyanogenmod.updater.receiver.StartupReceiver">
+        <receiver android:name="com.cyanogenmod.updater.receiver.NotificationClickReceiver">
             <intent-filter>
-                <action android:name="android.intent.action.BOOT_COMPLETED"/>
+                <action android:name="android.intent.action.DOWNLOAD_NOTIFICATION_CLICKED"/>
                 <category android:name="android.intent.category.HOME"/>
             </intent-filter>
         </receiver>
 
     </application>
 
-</manifest>
+</manifest>

res/values/strings.xml

@@ -15,7 +15,6 @@
     <string name="dialog_yes">Yes</string>
     <string name="dialog_no">No</string>
     <string name="dialog_update">Update</string>
-    <string name="dialog_backup_and_update">Backup &amp; Apply</string>
 
     <!-- Settings strings -->
     <string name="available_updates_title">Available updates</string>
@@ -48,21 +47,12 @@
     <string name="not_new_updates_found_body">{0} update(s) available for download</string>
 
     <!-- Downloads -->
-    <string name="minutes">min</string>
-    <string name="seconds">sec</string>
-    <string name="download_resume_not_supported">Resume not supported by server</string>
-    <string name="download_resume_download">Resuming download</string>
+    <string name="confirm_download_cancelation_dialog_title">Cancel download</string>
+    <string name="confirm_download_cancelation_dialog_message">You are about to cancel the current download, OK to proceed?</string>
+    <string name="download_cancelled">Download cancelled</string>
+    <string name="download_already_running">A download is already running</string>
     <string name="unable_to_download_file">Unable to download the update file</string>
-    <string name="download_not_enough_space">Not enough space on SDCard to download the update</string>
-    <string name="not_update_download_error_ticker">An error occurred while downloading the update</string>
-    <string name="not_update_download_error_title">An error occurred while downloading the update</string>
-    <string name="notification_tickertext">Downloading update</string>
-    <string name="notification_finished">Download finished</string>
-    <string name="exception_while_downloading">An error occurred while trying to download the update</string>
-    <string name="confirm_download_cancelation_dialog_title">Cancel download?</string>
-    <string name="confirm_download_cancelation_dialog_message">You can resume it later by downloading the same update again</string>
-    <string name="download_canceled_toast_message">Download cancelled</string>
-    <string name="downloading_update">Downloading update</string>
+    <string name="download_not_found">Download not found</string>
 
     <!-- MD5 related strings -->
     <string name="apply_existing_update_md5error_message">Error. MD5 checksum missmatch</string>
@@ -81,7 +71,7 @@
     <string name="confirm_delete_all_dialog_message">You are about to delete all downloaded update files, OK to proceed?</string>
     <string name="delete_single_update_success_message">Update {0} deleted</string>
     <string name="delete_updates_failure_message">There was an error deleting the update file</string>
-    <string name="delete_updates_noFolder_message">Update Folder not found</string>
+    <string name="delete_updates_noFolder_message">Update folder not found</string>
     <string name="delete_updates_success_message">All downloaded updates deleted</string>
 
     <!-- System info strings -->

res/xml/main.xml

@@ -33,11 +33,13 @@
         android:entries="@array/update_type_entries"
         android:entryValues="@array/update_type_values"/>
 
+     <!-- TODO: add this back once we have a way of doing backups that is not recovery specific
      <CheckBoxPreference
         android:key="pref_backup_rom"
         android:defaultValue="true"
         android:title="@string/backup_rom_title" 
         android:summary="@string/backup_rom_summary" />
+    -->
 
     <PreferenceCategory
         android:key="updates_category"