Java tutorial
/* * Copyright 2016 Hippo Seven * * 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.hippo.ehviewer.ui; import android.app.Activity; import android.content.DialogInterface; import android.content.Intent; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.os.AsyncTask; import android.support.v7.app.AlertDialog; import android.util.Log; import com.hippo.app.ListCheckBoxDialogBuilder; import com.hippo.ehviewer.EhApplication; import com.hippo.ehviewer.EhDB; import com.hippo.ehviewer.R; import com.hippo.ehviewer.Settings; import com.hippo.ehviewer.UrlOpener; import com.hippo.ehviewer.client.EhClient; import com.hippo.ehviewer.client.EhRequest; import com.hippo.ehviewer.client.data.GalleryInfo; import com.hippo.ehviewer.dao.DownloadLabel; import com.hippo.ehviewer.download.DownloadManager; import com.hippo.ehviewer.download.DownloadService; import com.hippo.ehviewer.ui.scene.BaseScene; import com.hippo.text.Html; import com.hippo.unifile.UniFile; import com.hippo.yorozuya.FileUtils; import com.hippo.yorozuya.IOUtils; import org.json.JSONException; import org.json.JSONObject; import java.io.IOException; import java.io.InputStream; import java.util.List; import okhttp3.OkHttpClient; import okhttp3.Request; import okhttp3.Response; public final class CommonOperations { private static final String TAG = CommonOperations.class.getSimpleName(); private static boolean UPDATING; public static void checkUpdate(Activity activity, boolean feedback) { if (!UPDATING) { UPDATING = true; new UpdateTask(activity, feedback).execute(); } } private static final class UpdateTask extends AsyncTask<Void, Void, JSONObject> { private final Activity mActivity; private final OkHttpClient mHttpClient; private final boolean mFeedback; public UpdateTask(Activity activity, boolean feedback) { mActivity = activity; mHttpClient = EhApplication.getOkHttpClient(activity); mFeedback = feedback; } @Override protected JSONObject doInBackground(Void... params) { try { String url; if (Settings.getBetaUpdateChannel()) { url = "http://www.ehviewer.com/update_beta.json"; } else { url = "http://www.ehviewer.com/update.json"; } Log.d(TAG, url); Request request = new Request.Builder().url(url).build(); Response response = mHttpClient.newCall(request).execute(); return new JSONObject(response.body().string()); } catch (IOException e) { return null; } catch (JSONException e) { return null; } } private void showUpToDateDialog() { if (!mFeedback) { return; } new AlertDialog.Builder(mActivity).setMessage(R.string.update_to_date) .setPositiveButton(android.R.string.ok, null).show(); } private void showUpdateDialog(String versionName, String size, CharSequence info, final String url) { new AlertDialog.Builder(mActivity).setTitle(R.string.update) .setMessage(mActivity.getString(R.string.update_plain, versionName, size, info)) .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { UrlOpener.openUrl(mActivity, url, false); } }).show(); } private void handleResult(JSONObject jo) { if (null == jo || mActivity.isFinishing()) { return; } String versionName; String size; CharSequence info; String url; try { PackageManager pm = mActivity.getPackageManager(); PackageInfo pi = pm.getPackageInfo(mActivity.getPackageName(), PackageManager.GET_ACTIVITIES); int currentVersionCode = pi.versionCode; int newVersionCode = jo.getInt("version_code"); if (currentVersionCode >= newVersionCode) { // Update to date showUpToDateDialog(); return; } versionName = jo.getString("version_name"); size = FileUtils.humanReadableByteCount(jo.getLong("size"), false); info = Html.fromHtml(jo.getString("info")); url = jo.getString("url"); } catch (PackageManager.NameNotFoundException | JSONException e) { return; } showUpdateDialog(versionName, size, info, url); } @Override protected void onPostExecute(JSONObject jsonObject) { try { handleResult(jsonObject); } finally { UPDATING = false; } } } private static void doAddToFavorites(Activity activity, GalleryInfo galleryInfo, int slot, EhClient.Callback<Void> listener) { if (slot == -1) { EhDB.putLocalFavorites(galleryInfo); listener.onSuccess(null); } else if (slot >= 0 && slot <= 9) { EhClient client = EhApplication.getEhClient(activity); EhRequest request = new EhRequest(); request.setMethod(EhClient.METHOD_ADD_FAVORITES); request.setArgs(galleryInfo.gid, galleryInfo.token, slot, ""); request.setCallback(listener); client.execute(request); } else { listener.onFailure(new Exception()); // TODO Add text } } public static void addToFavorites(final Activity activity, final GalleryInfo galleryInfo, final EhClient.Callback<Void> listener) { int slot = Settings.getDefaultFavSlot(); if (slot >= -1 && slot <= 9) { doAddToFavorites(activity, galleryInfo, slot, listener); } else { String[] items = new String[11]; items[0] = activity.getString(R.string.local_favorites); String[] favCat = Settings.getFavCat(); System.arraycopy(favCat, 0, items, 1, 10); new ListCheckBoxDialogBuilder(activity, items, new ListCheckBoxDialogBuilder.OnItemClickListener() { @Override public void onItemClick(ListCheckBoxDialogBuilder builder, AlertDialog dialog, int position) { int slot = position - 1; doAddToFavorites(activity, galleryInfo, slot, listener); if (builder.isChecked()) { Settings.putDefaultFavSlot(slot); } else { Settings.putDefaultFavSlot(Settings.INVALID_DEFAULT_FAV_SLOT); } } }, activity.getString(R.string.remember_favorite_collection), false) .setTitle(R.string.add_favorites_dialog_title).show(); } } public static void removeFromFavorites(Activity activity, GalleryInfo galleryInfo, final EhClient.Callback<Void> listener) { EhClient client = EhApplication.getEhClient(activity); EhRequest request = new EhRequest(); request.setMethod(EhClient.METHOD_ADD_FAVORITES); request.setArgs(galleryInfo.gid, galleryInfo.token, -1, ""); request.setCallback(listener); client.execute(request); } // TODO Add context if activity and context are different style public static void startDownload(final MainActivity activity, final GalleryInfo galleryInfo, boolean forceDefault) { final DownloadManager dm = EhApplication.getDownloadManager(activity); boolean justStart = forceDefault || dm.containDownloadInfo(galleryInfo.gid); String label = null; // Get default download label if (!justStart && Settings.getHasDefaultDownloadLabel()) { label = Settings.getDefaultDownloadLabel(); justStart = label == null || dm.containLabel(label); } // If there is no other label, just use null label if (!justStart && 0 == dm.getLabelList().size()) { justStart = true; label = null; } if (justStart) { // Already in download list or get default label Intent intent = new Intent(activity, DownloadService.class); intent.setAction(DownloadService.ACTION_START); intent.putExtra(DownloadService.KEY_LABEL, label); intent.putExtra(DownloadService.KEY_GALLERY_INFO, galleryInfo); activity.startService(intent); // Notify activity.showTip(R.string.added_to_download_list, BaseScene.LENGTH_SHORT); } else { // Let use chose label List<DownloadLabel> list = dm.getLabelList(); final String[] items = new String[list.size() + 1]; items[0] = activity.getString(R.string.default_download_label_name); for (int i = 0, n = list.size(); i < n; i++) { items[i + 1] = list.get(i).getLabel(); } new ListCheckBoxDialogBuilder(activity, items, new ListCheckBoxDialogBuilder.OnItemClickListener() { @Override public void onItemClick(ListCheckBoxDialogBuilder builder, AlertDialog dialog, int position) { String label; if (position == 0) { label = null; } else { label = items[position]; if (!dm.containLabel(label)) { label = null; } } // Start download Intent intent = new Intent(activity, DownloadService.class); intent.setAction(DownloadService.ACTION_START); intent.putExtra(DownloadService.KEY_LABEL, label); intent.putExtra(DownloadService.KEY_GALLERY_INFO, galleryInfo); activity.startService(intent); // Save settings if (builder.isChecked()) { Settings.putHasDefaultDownloadLabel(true); Settings.putDefaultDownloadLabel(label); } else { Settings.putHasDefaultDownloadLabel(false); } // Notify activity.showTip(R.string.added_to_download_list, BaseScene.LENGTH_SHORT); } }, activity.getString(R.string.remember_download_label), false).setTitle(R.string.download).show(); } } public static void ensureNoMediaFile(UniFile file) { if (null == file) { return; } UniFile noMedia = file.createFile(".nomedia"); if (null == noMedia) { return; } InputStream is = null; try { is = noMedia.openInputStream(); } catch (IOException e) { // Ignore } finally { IOUtils.closeQuietly(is); } } public static void removeNoMediaFile(UniFile file) { if (null == file) { return; } UniFile noMedia = file.subFile(".nomedia"); if (null != noMedia && noMedia.isFile()) { noMedia.delete(); } } }