update:2021.03.19

fix:重新提交
add:

SecondaryDisplayLauncher/src/com/android/launcher3/PinnedAppPickerDialog.java

@@ -0,0 +1,74 @@
+/**
+ * Copyright (c) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.uiuios;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.GridView;
+
+import androidx.fragment.app.DialogFragment;
+
+import com.android.uiuios.R;
+
+/**
+ * Callback to be invoked when an app was picked.
+ */
+interface AppPickedCallback {
+    void onAppPicked(AppEntry appEntry);
+}
+
+/**
+ * Dialog that provides the user with a list of available apps to pin to the home screen.
+ */
+public class PinnedAppPickerDialog extends DialogFragment {
+
+    private AppListAdapter mAppListAdapter;
+    private AppPickedCallback mAppPickerCallback;
+
+    public PinnedAppPickerDialog() {
+    }
+
+    public static PinnedAppPickerDialog newInstance(AppListAdapter appListAdapter,
+            AppPickedCallback callback) {
+        PinnedAppPickerDialog
+                frag = new PinnedAppPickerDialog();
+        frag.mAppListAdapter = appListAdapter;
+        frag.mAppPickerCallback = callback;
+        return frag;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.app_picker_dialog, container);
+    }
+
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        GridView appGridView = view.findViewById(R.id.picker_app_grid);
+        appGridView.setAdapter(mAppListAdapter);
+        appGridView.setOnItemClickListener((adapterView, itemView, position, id) -> {
+            final AppEntry entry = mAppListAdapter.getItem(position);
+            mAppPickerCallback.onAppPicked(entry);
+            dismiss();
+        });
+    }
+}