Added repo watchers/subscribrs list

app/src/main/java/org/mian/gitnex/activities/RepoStargazersActivity.java

@@ -1,6 +1,5 @@
 package org.mian.gitnex.activities;
 
-import android.content.Context;
 import android.os.Bundle;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;

app/src/main/java/org/mian/gitnex/activities/RepoWatchersActivity.java

@@ -0,0 +1,95 @@
+package org.mian.gitnex.activities;
+
+import android.os.Bundle;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+import android.view.View;
+import android.widget.GridView;
+import android.widget.ImageView;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+import org.mian.gitnex.R;
+import org.mian.gitnex.adapters.RepoWatchersAdapter;
+import org.mian.gitnex.helpers.Authorization;
+import org.mian.gitnex.models.UserInfo;
+import org.mian.gitnex.util.TinyDB;
+import org.mian.gitnex.viewmodels.RepoWatchersViewModel;
+import java.util.List;
+
+/**
+ * Author M M Arif
+ */
+
+public class RepoWatchersActivity extends AppCompatActivity {
+
+    private TextView noDataWatchers;
+    private View.OnClickListener onClickListener;
+    private RepoWatchersAdapter adapter;
+    private GridView mGridView;
+    private ProgressBar mProgressBar;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_repo_watchers);
+
+        TinyDB tinyDb = new TinyDB(getApplicationContext());
+        final String instanceUrl = tinyDb.getString("instanceUrl");
+        final String loginUid = tinyDb.getString("loginUid");
+        final String instanceToken = "token " + tinyDb.getString(loginUid + "-token");
+
+        ImageView closeActivity = findViewById(R.id.close);
+        TextView toolbarTitle = findViewById(R.id.toolbar_title);
+        noDataWatchers = findViewById(R.id.noDataWatchers);
+        mGridView = findViewById(R.id.gridView);
+        mProgressBar = findViewById(R.id.progress_bar);
+
+        String repoFullNameForWatchers = getIntent().getStringExtra("repoFullNameForWatchers");
+        String[] parts = repoFullNameForWatchers.split("/");
+        final String repoOwner = parts[0];
+        final String repoName = parts[1];
+
+        initCloseListener();
+        closeActivity.setOnClickListener(onClickListener);
+
+        toolbarTitle.setText(R.string.repoWatchersInMenu);
+
+        fetchDataAsync(instanceUrl, Authorization.returnAuthentication(getApplicationContext(), loginUid, instanceToken), repoOwner, repoName);
+
+    }
+
+    private void fetchDataAsync(String instanceUrl, String instanceToken, String repoOwner, String repoName) {
+
+        RepoWatchersViewModel repoWatchersModel = new ViewModelProvider(this).get(RepoWatchersViewModel.class);
+
+        repoWatchersModel.getRepoWatchers(instanceUrl, instanceToken, repoOwner, repoName).observe(this, new Observer<List<UserInfo>>() {
+            @Override
+            public void onChanged(@Nullable List<UserInfo> watchersListMain) {
+                adapter = new RepoWatchersAdapter(getApplicationContext(), watchersListMain);
+                if(adapter.getCount() > 0) {
+                    mGridView.setAdapter(adapter);
+                    noDataWatchers.setVisibility(View.GONE);
+                }
+                else {
+                    adapter.notifyDataSetChanged();
+                    mGridView.setAdapter(adapter);
+                    noDataWatchers.setVisibility(View.VISIBLE);
+                }
+                mProgressBar.setVisibility(View.GONE);
+            }
+        });
+
+    }
+
+    private void initCloseListener() {
+        onClickListener = new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                finish();
+            }
+        };
+    }
+
+}