| /* |
| * Copyright 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.example.androidx.slice.demos; |
| |
| import static android.app.slice.Slice.HINT_LARGE; |
| import static android.app.slice.Slice.HINT_TITLE; |
| import static android.app.slice.SliceItem.FORMAT_TEXT; |
| |
| import android.annotation.SuppressLint; |
| import android.app.ProgressDialog; |
| import android.app.slice.SliceProvider; |
| import android.content.ComponentName; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.Intent; |
| import android.content.SharedPreferences; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ProviderInfo; |
| import android.content.pm.ResolveInfo; |
| import android.graphics.drawable.Drawable; |
| import android.net.Uri; |
| import android.os.AsyncTask; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.util.Log; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.BaseAdapter; |
| import android.widget.ImageView; |
| import android.widget.ListAdapter; |
| import android.widget.TextView; |
| |
| import androidx.appcompat.app.AlertDialog; |
| import androidx.core.util.Consumer; |
| import androidx.slice.Slice; |
| import androidx.slice.SliceItem; |
| import androidx.slice.SliceMetadata; |
| import androidx.slice.SliceViewManager; |
| import androidx.slice.core.SliceQuery; |
| import androidx.slice.widget.ListContent; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Helper for selecting slices from apps. |
| */ |
| public class SliceSelectionDialog { |
| |
| private static final String TAG = "SliceSelectionDialog"; |
| |
| private SliceSelectionDialog() { |
| } |
| |
| /** |
| * Show the selection dialog |
| */ |
| public static void create(Context context, Consumer<Uri> selectedCallback) { |
| PackageManager pm = context.getPackageManager(); |
| List<PackageInfo> apps = pm.getInstalledPackages(PackageManager.GET_PROVIDERS); |
| List<ProviderInfo> sliceProviders = new ArrayList<>(); |
| IconCache cache = new IconCache(); |
| HashMap<String, String> labels = new HashMap<>(); |
| ProviderTypeCache typeCache = new ProviderTypeCache(context); |
| |
| ProgressDialog dialog = ProgressDialog.show(context, null, "Loading..."); |
| |
| new Thread(() -> { |
| for (PackageInfo app : apps) { |
| if (app.providers == null || app.providers.length == 0) { |
| continue; |
| } |
| labels.put(app.packageName, app.applicationInfo.loadLabel(pm).toString()); |
| for (ProviderInfo provider : app.providers) { |
| if (SliceProvider.SLICE_TYPE.equals(typeCache.getType(provider))) { |
| sliceProviders.add(provider); |
| } |
| } |
| } |
| Collections.sort(sliceProviders, |
| (o1, o2) -> labels.get(o1.packageName).compareTo(labels.get(o2.packageName))); |
| new Handler(Looper.getMainLooper()).post(() -> { |
| dialog.dismiss(); |
| ListAdapter adapter = new BaseAdapter() { |
| @Override |
| public int getCount() { |
| return sliceProviders.size(); |
| } |
| |
| @Override |
| public Object getItem(int position) { |
| return sliceProviders.get(position); |
| } |
| |
| @Override |
| public long getItemId(int position) { |
| return position; |
| } |
| |
| @Override |
| public View getView(int position, View convertView, ViewGroup parent) { |
| if (convertView == null) { |
| convertView = LayoutInflater.from(context).inflate(R.layout.app_item, |
| parent, |
| false); |
| } |
| ImageView iv = convertView.findViewById(R.id.icon); |
| TextView title = convertView.findViewById(R.id.title); |
| convertView.findViewById(R.id.summary).setVisibility(View.GONE); |
| ProviderInfo provider = sliceProviders.get(position); |
| cache.loadIcon(iv, provider, pm); |
| title.setText(labels.get(provider.packageName)); |
| return convertView; |
| } |
| }; |
| DialogInterface.OnClickListener clickListener = (dialog1, which) -> { |
| ProviderInfo appInfo = sliceProviders.get(which); |
| showSliceList(context, selectedCallback, appInfo, |
| labels.get(appInfo.packageName)); |
| }; |
| new AlertDialog.Builder(context) |
| .setTitle("Select app") |
| .setAdapter(adapter, clickListener) |
| .show(); |
| }); |
| }).start(); |
| } |
| |
| private static void showSliceList(Context context, Consumer<Uri> selectedCallback, |
| ProviderInfo provider, String label) { |
| ProgressDialog dialog = ProgressDialog.show(context, null, "Loading..."); |
| |
| new Thread(() -> { |
| String authority = provider.authority.split(";", -1)[0]; |
| HashMap<String, String> labels = new HashMap<>(); |
| SliceViewManager sliceViewManager = SliceViewManager.getInstance(context); |
| List<Uri> slices = new ArrayList<>(sliceViewManager.getSliceDescendants( |
| new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT) |
| .authority(authority) |
| .build())); |
| |
| Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); |
| mainIntent.addCategory(Intent.CATEGORY_LAUNCHER); |
| mainIntent.setPackage(provider.packageName); |
| Uri uri = sliceViewManager.mapIntentToUri(mainIntent); |
| List<ResolveInfo> info = context.getPackageManager().queryIntentActivities(mainIntent, |
| 0); |
| if (info.size() == 1) { |
| // If we resolve to an activity, set the intent to explicitly |
| // point at that activity. |
| mainIntent = new Intent() |
| .setComponent(new ComponentName(provider.packageName, |
| info.get(0).activityInfo.name)); |
| } |
| if (uri != null) { |
| slices.add(uri); |
| } |
| for (Uri slice : slices) { |
| labels.put(slice.toString(), loadLabel(context, sliceViewManager, slice)); |
| } |
| new Handler(Looper.getMainLooper()).post(() -> { |
| dialog.dismiss(); |
| ListAdapter adapter = new BaseAdapter() { |
| @Override |
| public int getCount() { |
| return slices.size(); |
| } |
| |
| @Override |
| public Object getItem(int position) { |
| return slices.get(position); |
| } |
| |
| @Override |
| public long getItemId(int position) { |
| return position; |
| } |
| |
| @Override |
| public View getView(int position, View convertView, ViewGroup parent) { |
| if (convertView == null) { |
| convertView = LayoutInflater.from(context).inflate(R.layout.app_item, |
| parent, |
| false); |
| } |
| TextView title = convertView.findViewById(R.id.title); |
| TextView summary = convertView.findViewById(R.id.summary); |
| convertView.findViewById(R.id.icon_frame).setVisibility(View.GONE); |
| Uri uri = slices.get(position); |
| title.setText(labels.get(uri.toString())); |
| summary.setText(uri.toString()); |
| return convertView; |
| } |
| }; |
| DialogInterface.OnClickListener clickListener = (dialog1, which) -> { |
| Uri slice = slices.get(which); |
| selectedCallback.accept(slice); |
| }; |
| new AlertDialog.Builder(context) |
| .setTitle(label) |
| .setAdapter(adapter, clickListener) |
| .show(); |
| }); |
| }).start(); |
| } |
| |
| private static String loadLabel(Context context, SliceViewManager sliceViewManager, Uri slice) { |
| Slice content = bindSliceSynchronous(context, sliceViewManager, slice); |
| return String.valueOf(findTitle(context, content, SliceMetadata.from(context, content))); |
| } |
| |
| @SuppressLint("RestrictedApi") |
| protected static CharSequence findTitle(Context context, Slice loadedSlice, |
| SliceMetadata metaData) { |
| ListContent content = new ListContent(loadedSlice); |
| SliceItem headerItem = content.getHeader() != null |
| ? content.getHeader().getSliceItem() : null; |
| if (headerItem == null) return null; |
| // Look for a title, then large text, then any text at all. |
| SliceItem title = SliceQuery.find(headerItem, FORMAT_TEXT, HINT_TITLE, null); |
| if (title != null) { |
| return title.getText(); |
| } |
| title = SliceQuery.find(headerItem, FORMAT_TEXT, HINT_LARGE, null); |
| if (title != null) { |
| return title.getText(); |
| } |
| title = SliceQuery.find(headerItem, FORMAT_TEXT); |
| if (title != null) { |
| return title.getText(); |
| } |
| return null; |
| } |
| |
| protected static Slice bindSliceSynchronous(Context context, SliceViewManager manager, |
| Uri slice) { |
| final Slice[] returnSlice = new Slice[1]; |
| CountDownLatch latch = new CountDownLatch(1); |
| SliceViewManager.SliceCallback callback = new SliceViewManager.SliceCallback() { |
| @Override |
| public void onSliceUpdated(Slice s) { |
| try { |
| SliceMetadata m = SliceMetadata.from(context, s); |
| if (m.getLoadingState() == SliceMetadata.LOADED_ALL) { |
| returnSlice[0] = s; |
| latch.countDown(); |
| manager.unregisterSliceCallback(slice, this); |
| } |
| } catch (Exception e) { |
| Log.w(TAG, slice + " cannot be indexed", e); |
| returnSlice[0] = s; |
| latch.countDown(); |
| } |
| } |
| }; |
| // Register a callback until we get a loaded slice. |
| manager.registerSliceCallback(slice, callback); |
| // Trigger the first bind in case no loading is needed. |
| callback.onSliceUpdated(manager.bindSlice(slice)); |
| try { |
| latch.await(250, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| } |
| return returnSlice[0]; |
| } |
| |
| private static class IconCache { |
| private final HashMap<String, Drawable> mIcons = new HashMap<>(); |
| |
| private void loadIcon(ImageView iv, ProviderInfo provider, PackageManager pm) { |
| if (mIcons.containsKey(provider.packageName)) { |
| iv.setImageDrawable(mIcons.get(provider.packageName)); |
| } |
| AsyncTask.execute(() -> { |
| mIcons.put(provider.packageName, provider.loadIcon(pm)); |
| iv.post(() -> iv.setImageDrawable(mIcons.get(provider.packageName))); |
| }); |
| } |
| } |
| |
| private static class ProviderTypeCache { |
| private static final String PROVIDER_LOOKUP = "provider_lookup"; |
| |
| private final SharedPreferences mSharedPreferences; |
| private final Context mContext; |
| |
| ProviderTypeCache(Context context) { |
| mContext = context; |
| mSharedPreferences = context.getSharedPreferences(PROVIDER_LOOKUP, 0); |
| } |
| |
| private String getType(ProviderInfo provider) { |
| if (provider == null || provider.authority == null) { |
| return ""; |
| } |
| String authority = provider.authority.split(";", -1)[0]; |
| if (mSharedPreferences.contains(authority)) { |
| return mSharedPreferences.getString(authority, null); |
| } |
| String type = String.valueOf(mContext.getContentResolver().getType(new Uri.Builder() |
| .scheme(ContentResolver.SCHEME_CONTENT) |
| .authority(authority) |
| .build())); |
| mSharedPreferences.edit() |
| .putString(authority, type) |
| .commit(); |
| return type; |
| } |
| } |
| } |