Introduce app shortcuts

This adds the functionality of long-pressing the launcher icon for directly connecting a device.
The devices are automatically added as shortcuts when they are being connected.
The helper library handles the maximum number of shortcuts automatically.

app/build.gradle

@@ -248,6 +248,7 @@ dependencies {
     implementation 'com.github.wax911:android-emojify:0.1.7'
     implementation 'com.google.protobuf:protobuf-javalite:3.10.0'
     implementation 'com.android.volley:volley:1.2.1'
+    implementation 'androidx.core:core-google-shortcuts:1.0.1'
 
     // JSR-310 timezones backport for Android, since we're still API 21
     implementation 'com.jakewharton.threetenabp:threetenabp:1.4.0'

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/ControlCenterv2.java

@@ -86,6 +86,8 @@ import nodomain.freeyourgadget.gadgetbridge.util.DeviceHelper;
 import nodomain.freeyourgadget.gadgetbridge.util.GB;
 import nodomain.freeyourgadget.gadgetbridge.util.Prefs;
 
+import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_CONNECT;
+
 //TODO: extend AbstractGBActivity, but it requires actionbar that is not available
 public class ControlCenterv2 extends AppCompatActivity
         implements NavigationView.OnNavigationItemSelectedListener, GBActivity {
@@ -319,6 +321,7 @@ public class ControlCenterv2 extends AppCompatActivity
     @Override
     protected void onResume() {
         super.onResume();
+        handleShortcut(getIntent());
         if (isLanguageInvalid) {
             isLanguageInvalid = false;
             recreate();
@@ -549,6 +552,17 @@ public class ControlCenterv2 extends AppCompatActivity
         return new RefreshTask(task, context);
     }
 
+    private void handleShortcut(Intent intent) {
+        if(intent.getAction().equals(ACTION_CONNECT)) {
+            String btDeviceAddress = intent.getStringExtra("device");
+            if(btDeviceAddress!=null){
+                GBDevice candidate = DeviceHelper.getInstance().findAvailableDevice(btDeviceAddress, this);
+                if (candidate != null && !candidate.isConnected()) {
+                    GBApplication.deviceService(candidate).connect();
+                }
+            }
+        }
+    }
     public class RefreshTask extends DBAccess {
         public RefreshTask(String task, Context context) {
             super(task, context);

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/adapter/GBDeviceAdapterv2.java

@@ -56,6 +56,9 @@ import android.widget.Toast;
 import androidx.annotation.NonNull;
 import androidx.cardview.widget.CardView;
 import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import androidx.core.content.pm.ShortcutInfoCompat;
+import androidx.core.content.pm.ShortcutManagerCompat;
+import androidx.core.graphics.drawable.IconCompat;
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 import androidx.recyclerview.widget.DiffUtil;
 import androidx.recyclerview.widget.ListAdapter;
@@ -118,6 +121,8 @@ import nodomain.freeyourgadget.gadgetbridge.util.FormatUtils;
 import nodomain.freeyourgadget.gadgetbridge.util.GB;
 import nodomain.freeyourgadget.gadgetbridge.util.StringUtils;
 
+import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.ACTION_CONNECT;
+
 /**
  * Adapter for displaying GBDevice instances.
  */
@@ -281,6 +286,7 @@ public class GBDeviceAdapterv2 extends ListAdapter<GBDevice, GBDeviceAdapterv2.V
                     showTransientSnackbar(R.string.controlcenter_snackbar_need_longpress);
                 } else {
                     showTransientSnackbar(R.string.controlcenter_snackbar_connecting);
+                    createDynamicShortcut(device);
                     GBApplication.deviceService(device).connect();
                 }
             }
@@ -1401,6 +1407,21 @@ public class GBDeviceAdapterv2 extends ListAdapter<GBDevice, GBDeviceAdapterv2.V
         return Color.HSVToColor(hsvb);
     }
 
+    void createDynamicShortcut(GBDevice device) {
+        Intent intent = new Intent(context, ControlCenterv2.class)
+                .setAction(ACTION_CONNECT)
+                .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK)
+                .putExtra("device", device.getAddress());
+
+        ShortcutManagerCompat.pushDynamicShortcut(context, new ShortcutInfoCompat.Builder(context, device.getAddress())
+                .setLongLived(false)
+                .setShortLabel(device.getAliasOrName())
+                .setIntent(intent)
+                .setIcon(IconCompat.createWithResource(context, device.getType().getIcon()))
+                .build()
+        );
+    }
+
     private static class GBDeviceDiffUtil extends DiffUtil.ItemCallback<GBDevice> {
         @Override
         public boolean areItemsTheSame(@NonNull GBDevice oldItem, @NonNull GBDevice newItem) {