SearchActivity: Exit animation

Signed-off-by: Fung <fython@163.com>

Author: fython

gradle.properties

@@ -1,6 +1,6 @@
 org.gradle.jvmargs=-Xmx1536m
 BUILD_TOOLS_VERSION=26.0.0
-VERSION_NAME=2.6.0
+VERSION_NAME=2.6.1
 TARGET_SDK_VERSION=26
-VERSION_CODE=35
-MIN_SDK_VERSION=19
+VERSION_CODE=36
+MIN_SDK_VERSION=21

mobile/src/main/java/info/papdt/express/helper/ui/SearchActivity.java

@@ -14,7 +14,6 @@
 import android.support.v7.app.ActionBar;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.AppCompatEditText;
-import android.support.v7.widget.DrawableUtils;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.text.Editable;
@@ -183,6 +182,30 @@ private void circularRevealActivity() {
 		circularReveal.start();
 	}
 
+	@Override
+	public void onBackPressed() {
+		Intent intent = getIntent();
+
+		int cx = intent.getIntExtra(EXTRA_CX, rootLayout.getWidth() / 2);
+		int cy = intent.getIntExtra(EXTRA_CY, rootLayout.getHeight() / 2);
+
+		float finalRadius = Math.max(rootLayout.getWidth(), rootLayout.getHeight());
+		Animator circularReveal = ViewAnimationUtils.createCircularReveal(rootLayout, cx, cy, finalRadius, 0);
+
+		circularReveal.addListener(new Animator.AnimatorListener() {
+			@Override public void onAnimationStart(Animator animator) {}
+			@Override public void onAnimationCancel(Animator animator) {}
+			@Override public void onAnimationRepeat(Animator animator) {}
+			@Override
+			public void onAnimationEnd(Animator animator) {
+				rootLayout.setVisibility(View.INVISIBLE);
+				finish();
+			}
+		});
+		circularReveal.setDuration(400);
+		circularReveal.start();
+	}
+
 	private synchronized ArrayList<SearchResultAdapter.ItemType> buildItems() {
 		ArrayList<SearchResultAdapter.ItemType> items = new ArrayList<>();
 		items.add(new SearchResultAdapter.ItemType(SearchResultAdapter.ItemType.TYPE_SUBHEADER));