Optimize updater

app/src/leanback/java/com/fongmi/android/tv/Updater.java

@@ -24,17 +24,10 @@ import java.util.Locale;
 public class Updater implements Download.Callback {
 
     private DialogUpdateBinding binding;
+    private final Download download;
     private AlertDialog dialog;
     private boolean dev;
 
-    private static class Loader {
-        static volatile Updater INSTANCE = new Updater();
-    }
-
-    public static Updater get() {
-        return Loader.INSTANCE;
-    }
-
     private File getFile() {
         return Path.cache("update.apk");
     }
@@ -47,6 +40,14 @@ public class Updater implements Download.Callback {
         return Github.getApk(dev, BuildConfig.FLAVOR_mode + "-" + BuildConfig.FLAVOR_api + "-" + BuildConfig.FLAVOR_abi);
     }
 
+    public static Updater create() {
+        return new Updater();
+    }
+
+    public Updater() {
+        this.download = Download.create(getApk(), getFile(), this);
+    }
+
     public Updater force() {
         Notify.show(R.string.update_check);
         Setting.putUpdate(true);
@@ -103,12 +104,13 @@ public class Updater implements Download.Callback {
 
     private void cancel(View view) {
         Setting.putUpdate(false);
+        download.cancel();
         dismiss();
     }
 
     private void confirm(View view) {
         binding.confirm.setEnabled(false);
-        Download.create(getApk(), getFile(), this).start();
+        download.start();
     }
 
     private void dismiss() {

app/src/leanback/java/com/fongmi/android/tv/ui/activity/HomeActivity.java

@@ -97,7 +97,7 @@ public class HomeActivity extends BaseActivity implements CustomTitleView.Listen
     protected void initView() {
         mClock = Clock.create(mBinding.clock).format("MM/dd HH:mm:ss");
         mBinding.progressLayout.showProgress();
-        Updater.get().release().start(this);
+        Updater.create().release().start(this);
         mResult = Result.empty();
         Server.get().start();
         setRecyclerView();

app/src/leanback/java/com/fongmi/android/tv/ui/activity/SettingActivity.java

@@ -276,11 +276,11 @@ public class SettingActivity extends BaseActivity implements ConfigCallback, Sit
     }
 
     private void onVersion(View view) {
-        Updater.get().force().release().start(this);
+        Updater.create().force().release().start(this);
     }
 
     private boolean onVersionDev(View view) {
-        Updater.get().force().dev().start(this);
+        Updater.create().force().dev().start(this);
         return true;
     }