Add launcher shortcuts and fix duplicate pairing error

app/src/main/java/com/limelight/utils/ShortcutHelper.java

@@ -0,0 +1,115 @@
+package com.limelight.utils;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ShortcutInfo;
+import android.content.pm.ShortcutManager;
+import android.os.Build;
+
+import com.limelight.AppView;
+import com.limelight.R;
+import com.limelight.nvstream.http.ComputerDetails;
+
+import java.util.Arrays;
+import java.util.LinkedList;
+import java.util.List;
+
+public class ShortcutHelper {
+
+    private final ShortcutManager sm;
+    private final Context context;
+
+    public ShortcutHelper(Context context) {
+        this.context = context;
+        if (Build.VERSION.SDK_INT >= 25) {
+            sm = context.getSystemService(ShortcutManager.class);
+        }
+        else {
+            sm = null;
+        }
+    }
+
+    @TargetApi(25)
+    private void reapShortcutsForDynamicAdd() {
+        List<ShortcutInfo> dynamicShortcuts = sm.getDynamicShortcuts();
+        while (dynamicShortcuts.size() >= sm.getMaxShortcutCountPerActivity()) {
+            ShortcutInfo maxRankShortcut = dynamicShortcuts.get(0);
+            for (ShortcutInfo scut : dynamicShortcuts) {
+                if (maxRankShortcut.getRank() < scut.getRank()) {
+                    maxRankShortcut = scut;
+                }
+            }
+            sm.removeDynamicShortcuts(Arrays.asList(maxRankShortcut.getId()));
+        }
+    }
+
+    @TargetApi(25)
+    private List<ShortcutInfo> getAllShortcuts() {
+        LinkedList<ShortcutInfo> list = new LinkedList<>();
+        list.addAll(sm.getDynamicShortcuts());
+        list.addAll(sm.getPinnedShortcuts());
+        return list;
+    }
+
+    @TargetApi(25)
+    private ShortcutInfo getInfoForId(String id) {
+        List<ShortcutInfo> shortcuts = getAllShortcuts();
+
+        for (ShortcutInfo info : shortcuts) {
+            if (info.getId().equals(id)) {
+                return info;
+            }
+        }
+
+        return null;
+    }
+
+    public void reportShortcutUsed(String id) {
+        if (Build.VERSION.SDK_INT >= 25) {
+            ShortcutInfo sinfo = getInfoForId(id);
+            if (sinfo != null) {
+                sm.reportShortcutUsed(id);
+            }
+        }
+    }
+
+    public void createAppViewShortcut(String id, ComputerDetails details) {
+        if (Build.VERSION.SDK_INT >= 25) {
+            Intent i = new Intent(context, AppView.class);
+            i.putExtra(AppView.NAME_EXTRA, details.name);
+            i.putExtra(AppView.UUID_EXTRA, details.uuid.toString());
+            i.putExtra(AppView.SHORTCUT_EXTRA, true);
+            i.setAction(Intent.ACTION_DEFAULT);
+
+            ShortcutInfo sinfo = new ShortcutInfo.Builder(context, id)
+                    .setIntent(i)
+                    .setShortLabel(details.name)
+                    .setLongLabel(details.name)
+                    .build();
+
+            ShortcutInfo existingSinfo = getInfoForId(id);
+            if (existingSinfo != null) {
+                // Update in place
+                sm.updateShortcuts(Arrays.asList(sinfo));
+                sm.enableShortcuts(Arrays.asList(id));
+            }
+            else {
+                // Reap shortcuts to make space for this new one
+                reapShortcutsForDynamicAdd();
+
+                // Add the new shortcut
+                sm.addDynamicShortcuts(Arrays.asList(sinfo));
+            }
+        }
+    }
+
+    public void disableShortcut(String id, CharSequence reason) {
+        if (Build.VERSION.SDK_INT >= 25) {
+            ShortcutInfo sinfo = getInfoForId(id);
+            if (sinfo != null) {
+                sm.disableShortcuts(Arrays.asList(id), reason);
+            }
+        }
+    }
+}