Created custom TopSnackBar.

New layout for in app notification
which slides from top of the screen.

part 8th of #309

Author: jainkuniya

app/src/main/java/com/zulip/android/activities/ZulipActivity.java

@@ -21,6 +21,7 @@
 import android.database.MergeCursor;
 import android.graphics.Bitmap;
 import android.graphics.PorterDuff;
+import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Build;
@@ -32,7 +33,6 @@
 import android.support.design.widget.AppBarLayout;
 import android.support.design.widget.CoordinatorLayout;
 import android.support.design.widget.FloatingActionButton;
-import android.support.design.widget.Snackbar;
 import android.support.v4.app.ActionBarDrawerToggle;
 import android.support.v4.app.ActivityCompat;
 import android.support.v4.app.FragmentManager;
@@ -58,6 +58,7 @@
 import android.view.View;
 import android.view.ViewPropertyAnimator;
 import android.view.WindowManager;
+import android.view.Window;
 import android.view.animation.Interpolator;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.AdapterView;
@@ -107,6 +108,7 @@
 import com.zulip.android.util.SwipeRemoveLinearLayout;
 import com.zulip.android.util.UrlHelper;
 import com.zulip.android.util.ZLog;
+import com.zulip.android.viewholders.TopSnackBar;
 
 import org.json.JSONObject;
 
@@ -167,6 +169,7 @@ public class ZulipActivity extends BaseActivity implements
     private Runnable statusUpdateRunnable;
 
     private int mToolbarHeightInPx;
+    private int statusBarHeight = 0;
     private MessageListFragment narrowedList;
     private MessageListFragment homeList;
     private AutoCompleteTextView streamActv;
@@ -249,6 +252,7 @@ public boolean setViewValue(View view, Cursor cursor, int i) {
     private RefreshableCursorAdapter peopleAdapter;
     private LinearLayout composeStatus;
     private String tempStreamSave = null;
+    private TopSnackBar topSnackBar;
 
     @Override
     public void removeChatBox(boolean animToRight) {
@@ -1663,6 +1667,9 @@ public void setLayoutBehaviour(LinearLayoutManager linearLayoutManager, Recycler
         layoutParams = (CoordinatorLayout.LayoutParams) fab.getLayoutParams();
         layoutParams.setBehavior(new RemoveViewsOnScroll(linearLayoutManager, adapter));
         fab.setLayoutParams(layoutParams);
+
+        topSnackBar.setMessagesLayoutManager(linearLayoutManager);
+        topSnackBar.setMessagesAdapter(adapter);
     }
 
     @Override
@@ -2218,32 +2225,27 @@ public void onNewMessages(Message[] messages) {
             showSnackbarNotification(messages); //Show notification
     }
 
-    Snackbar snackbar;
-    CoordinatorLayout.LayoutParams snackBarParams;
     private void setupSnackBar() {
         final CoordinatorLayout coordinatorLayout = (CoordinatorLayout) findViewById(R.id.coordinatorLayout);
-        snackbar = Snackbar.make(coordinatorLayout, "", Snackbar.LENGTH_LONG);
-        View v = snackbar.getView();
-        snackBarParams = (CoordinatorLayout.LayoutParams) v.getLayoutParams();
-        snackBarParams.gravity = Gravity.TOP;
-        v.setLayoutParams(snackBarParams);
         TypedValue tv = new TypedValue();
         if (getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true))
             mToolbarHeightInPx = TypedValue.complexToDimensionPixelSize(tv.data, getResources().getDisplayMetrics());
-        snackbar.setCallback(new Snackbar.Callback() {
-            @Override
-            public void onDismissed(Snackbar snackbar, int event) {
-                super.onDismissed(snackbar, event);
-                if (event == Snackbar.Callback.DISMISS_EVENT_TIMEOUT) prevMessageSameCount = -1;
-            }
-        });
+
+        int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
+        if (resourceId > 0) {
+            statusBarHeight = getResources().getDimensionPixelSize(resourceId);
+        }
+
+        topSnackBar = new TopSnackBar(this);
+        coordinatorLayout.addView(topSnackBar.getLinearLayout());
     }
 
     NarrowFilter narrowFilter;
     String prevId = null;
     int prevMessageSameCount = -1;
     private void showSnackbarNotification(Message[] messages) {
         MutedTopics mutedTopics = MutedTopics.get();
+        String notificationMessage;
         int nonMutedMessagesCount = 0;
         Message tempMessage = null; //Stores a temporary message which is non-muted, later used for retrieving Stream/Topic
         for (Message message : messages) {
@@ -2266,38 +2268,35 @@ private void showSnackbarNotification(Message[] messages) {
         }
         if (nonMutedMessagesCount == 0) return;
         if (prevId == null && messages.length > 1) {
-            snackbar.setText(getResources().getQuantityString(R.plurals.new_message_mul_sender, nonMutedMessagesCount, nonMutedMessagesCount));
+            notificationMessage = getResources().getQuantityString(R.plurals.new_message_mul_sender, nonMutedMessagesCount, nonMutedMessagesCount);
             narrowFilter = null;
             if (narrowedList != null) {
                 narrowedList = null;
                 getSupportFragmentManager().popBackStack(NARROW,
                         FragmentManager.POP_BACK_STACK_INCLUSIVE);
             }
-            snackbar.setAction(R.string.SHOW, new View.OnClickListener() {
+            topSnackBar.setAction(R.string.SHOW, new View.OnClickListener() {
                 @Override
                 public void onClick(View view) {
+                    topSnackBar.dismiss();
                     homeList.showLatestMessages();
                 }
             });
         } else {
             if (messages.length == 1) tempMessage = messages[0];
             String name = (tempMessage.getType() == MessageType.PRIVATE_MESSAGE) ? getString(R.string.notify_private, tempMessage.getSenderFullName()) : getString(R.string.notify_stream, tempMessage.getStream().getName() , tempMessage.getSubject());
             if (prevMessageSameCount > 0) name += " (" + prevMessageSameCount + ")";
-            snackbar.setText(getResources().getQuantityString(R.plurals.new_message, nonMutedMessagesCount, nonMutedMessagesCount, name));
+            notificationMessage = getResources().getQuantityString(R.plurals.new_message, nonMutedMessagesCount, nonMutedMessagesCount, name);
             narrowFilter = (tempMessage.getType() == MessageType.PRIVATE_MESSAGE) ? new NarrowFilterPM(Arrays.asList(tempMessage.getRecipients(app))) : new NarrowFilterStream(tempMessage.getStream(), tempMessage.getSubject());
-            snackbar.setAction(R.string.SHOW, new View.OnClickListener() {
+            topSnackBar.setAction(R.string.SHOW, new View.OnClickListener() {
                 @Override
                 public void onClick(View view) {
+                    topSnackBar.dismiss();
                     doNarrow(narrowFilter);
                 }
             });
         }
-        if (appBarLayout.getVisibility() == View.GONE) {
-            snackBarParams.setMargins(0, 0, 0, 0);
-        } else {
-            snackBarParams.setMargins(0, mToolbarHeightInPx, 0, 0);
-        }
-        snackbar.show();
+        topSnackBar.show((appBarLayout.getVisibility() == View.GONE) ? statusBarHeight : statusBarHeight + mToolbarHeightInPx, notificationMessage, TopSnackBar.LENGTH_LONG);
     }
 
     // Intent Extra constants

app/src/main/java/com/zulip/android/util/RemoveViewsOnScroll.java

@@ -14,6 +14,7 @@
 import android.view.View;
 import android.view.ViewPropertyAnimator;
 import android.view.animation.Interpolator;
+import android.widget.LinearLayout;
 
 import com.zulip.android.R;
 import com.zulip.android.activities.RecyclerMessageAdapter;
@@ -62,9 +63,9 @@ public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, View child, V
             }
 
             changeInYDir += dy;
-            if (changeInYDir > toolbarHeight && child.getVisibility() == View.VISIBLE && !isViewHidden)
+            if ((changeInYDir > toolbarHeight && child.getVisibility() == View.VISIBLE) && (!isViewHidden || isTopSnackBar(child)))
                 hideView(child);
-            else if (changeInYDir < 0 && child.getVisibility() == View.GONE && !mIsShowing) {
+            else if (changeInYDir < 0 && (child.getVisibility() == View.GONE && !mIsShowing) || isTopSnackBar(child)) {
                 if (child instanceof FloatingActionButton) {
                     if (chatBox == null)
                         chatBox = coordinatorLayout.findViewById(R.id.messageBoxContainer);
@@ -77,11 +78,22 @@ else if (changeInYDir < 0 && child.getVisibility() == View.GONE && !mIsShowing)
         }
     }
 
+    private boolean isTopSnackBar(View child) {
+        return (child.getId() != R.id.appBarLayout && !(child instanceof FloatingActionButton));
+    }
+
     @SuppressLint("NewApi")
     private void hideView(final View view) {
         isViewHidden = true;
+        int y = view.getHeight();
+        ;
+        if (view instanceof AppBarLayout) {
+            y = -1 * view.getHeight();
+        } else if (view instanceof LinearLayout) {
+            y = 0;
+        }
         ViewPropertyAnimator animator = view.animate()
-                .translationY((view instanceof AppBarLayout) ? -1 * view.getHeight() : view.getHeight())
+                .translationY(y)
                 .setInterpolator(FAST_OUT_SLOW_IN_INTERPOLATOR)
                 .setDuration(200);
 
@@ -114,7 +126,7 @@ public void onAnimationRepeat(Animator animator) {
     public void showView(final View view) {
         mIsShowing = true;
         ViewPropertyAnimator animator = view.animate()
-                .translationY(0)
+                .translationY((view.getId() == R.id.appBarLayout || view instanceof FloatingActionButton) ? 0 : toolbarHeight)
                 .setInterpolator(FAST_OUT_SLOW_IN_INTERPOLATOR)
                 .setDuration(200);