Refactor AppPicker to adopt the latest UX

- get rid of ListActivity
- add aconfig

Bug: 299195099
Test: manual
Change-Id: I922ffb46f3132d117b0f682d8076f9e975d02b2c

src/com/android/settings/development/DevelopmentAppPicker.java

@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2023 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.settings.development;
+
+import static android.app.Activity.RESULT_OK;
+
+import android.app.settings.SettingsEnums;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Process;
+import android.os.UserHandle;
+
+import com.android.settings.R;
+import com.android.settings.applications.defaultapps.DefaultAppPickerFragment;
+import com.android.settingslib.applications.DefaultAppInfo;
+
+import java.text.Collator;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+public class DevelopmentAppPicker extends DefaultAppPickerFragment {
+    public static final String EXTRA_REQUESTING_PERMISSION = "REQUESTING_PERMISSION";
+    public static final String EXTRA_DEBUGGABLE = "DEBUGGABLE";
+    public static final String EXTRA_SELECTING_APP = "SELECTING_APP";
+
+    private String mPermissionName;
+    private boolean mDebuggableOnly;
+    private String mSelectingApp;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        Bundle arguments = getArguments();
+        if (arguments == null) {
+            return;
+        }
+        mPermissionName = arguments.getString(EXTRA_REQUESTING_PERMISSION);
+        mDebuggableOnly = arguments.getBoolean(EXTRA_DEBUGGABLE);
+        mSelectingApp = arguments.getString(EXTRA_SELECTING_APP);
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.DEVELOPMENT_APP_PICKER;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.development_app_picker;
+    }
+
+    @Override
+    protected boolean shouldShowItemNone() {
+        return true;
+    }
+
+    @Override
+    protected List<DefaultAppInfo> getCandidates() {
+        List<DefaultAppInfo> packageInfoList = new ArrayList<DefaultAppInfo>();
+        Context context = getContext();
+        List<ApplicationInfo> installedApps = mPm.getInstalledApplications(0);
+        for (ApplicationInfo ai : installedApps) {
+            if (ai.uid == Process.SYSTEM_UID) {
+                continue;
+            }
+            // Filter out apps that are not debuggable if required.
+            if (mDebuggableOnly) {
+                // On a user build, we only allow debugging of apps that
+                // are marked as debuggable, otherwise (for platform development)
+                // we allow all apps.
+                if ((ai.flags & ApplicationInfo.FLAG_DEBUGGABLE) == 0
+                        && "user".equals(Build.TYPE)) {
+                    continue;
+                }
+            }
+
+            // Filter out apps that do not request the permission if required.
+            if (mPermissionName != null) {
+                boolean requestsPermission = false;
+                try {
+                    PackageInfo pi = mPm.getPackageInfo(ai.packageName,
+                            PackageManager.GET_PERMISSIONS);
+                    if (pi.requestedPermissions == null) {
+                        continue;
+                    }
+                    for (String requestedPermission : pi.requestedPermissions) {
+                        if (requestedPermission.equals(mPermissionName)) {
+                            requestsPermission = true;
+                            break;
+                        }
+                    }
+                    if (!requestsPermission) {
+                        continue;
+                    }
+                } catch (PackageManager.NameNotFoundException e) {
+                    continue;
+                }
+            }
+            DefaultAppInfo appInfo = new DefaultAppInfo(context, mPm, UserHandle.myUserId(), ai);
+            packageInfoList.add(appInfo);
+        }
+        Collections.sort(packageInfoList, sLabelComparator);
+        return packageInfoList;
+    }
+
+    @Override
+    protected String getDefaultKey() {
+        return mSelectingApp;
+    }
+
+    @Override
+    protected boolean setDefaultKey(String key) {
+        DefaultAppInfo appInfo = (DefaultAppInfo) getCandidate(key);
+        Intent intent = new Intent();
+        if (appInfo != null && appInfo.packageItemInfo != null) {
+            intent.setAction(appInfo.packageItemInfo.packageName);
+        }
+        setResult(RESULT_OK, intent);
+        finish();
+        return true;
+    }
+
+    private static final Comparator<DefaultAppInfo> sLabelComparator =
+            new Comparator<DefaultAppInfo>() {
+                public int compare(DefaultAppInfo a, DefaultAppInfo b) {
+                    return Collator.getInstance().compare(a.loadLabel(), b.loadLabel());
+                }
+            };
+}