Java tutorial
package org.schabi.newpipe.download; import android.Manifest; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.content.pm.PackageManager; import android.net.Uri; import android.os.Bundle; import android.os.IBinder; import android.support.annotation.Nullable; import android.support.v4.app.ActivityCompat; import android.support.v4.app.DialogFragment; import android.support.v4.content.ContextCompat; import android.support.v7.widget.Toolbar; import android.util.Log; import android.view.LayoutInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.CheckBox; import android.widget.EditText; import android.widget.SeekBar; import android.widget.TextView; import org.schabi.newpipe.App; import org.schabi.newpipe.NewPipeSettings; import org.schabi.newpipe.R; import java.io.File; import java.util.ArrayList; import java.util.List; import us.shandian.giga.get.DownloadManager; import us.shandian.giga.service.DownloadManagerService; /** * Created by Christian Schabesberger on 21.09.15. * * Copyright (C) Christian Schabesberger 2015 <chris.schabesberger@mailbox.org> * DownloadDialog.java is part of NewPipe. * * NewPipe is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * NewPipe is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with NewPipe. If not, see <http://www.gnu.org/licenses/>. */ public class DownloadDialog extends DialogFragment { private static final String TAG = DialogFragment.class.getName(); public static final String TITLE = "name"; public static final String FILE_SUFFIX_AUDIO = "file_suffix_audio"; public static final String FILE_SUFFIX_VIDEO = "file_suffix_video"; public static final String AUDIO_URL = "audio_url"; public static final String VIDEO_URL = "video_url"; private DownloadManager mManager; private DownloadManagerService.DMBinder mBinder; private ServiceConnection mConnection = new ServiceConnection() { @Override public void onServiceConnected(ComponentName p1, IBinder binder) { mBinder = (DownloadManagerService.DMBinder) binder; mManager = mBinder.getDownloadManager(); } @Override public void onServiceDisconnected(ComponentName p1) { } }; public DownloadDialog() { } public static DownloadDialog newInstance(Bundle args) { DownloadDialog dialog = new DownloadDialog(); dialog.setArguments(args); dialog.setStyle(DialogFragment.STYLE_NO_TITLE, 0); return dialog; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (ContextCompat.checkSelfPermission(this.getContext(), Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) ActivityCompat.requestPermissions(getActivity(), new String[] { Manifest.permission.WRITE_EXTERNAL_STORAGE }, 0); Intent i = new Intent(); i.setClass(getContext(), DownloadManagerService.class); getContext().startService(i); getContext().bindService(i, mConnection, Context.BIND_AUTO_CREATE); return inflater.inflate(R.layout.dialog_url, container); } @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); Bundle arguments = getArguments(); final Toolbar toolbar = (Toolbar) view.findViewById(R.id.toolbar); final EditText name = (EditText) view.findViewById(R.id.file_name); final TextView tCount = (TextView) view.findViewById(R.id.threads_count); final SeekBar threads = (SeekBar) view.findViewById(R.id.threads); toolbar.setTitle(R.string.download_dialog_title); toolbar.setNavigationIcon(R.drawable.ic_arrow_back_black_24dp); toolbar.inflateMenu(R.menu.dialog_url); toolbar.setNavigationOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { getDialog().dismiss(); } }); threads.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { @Override public void onProgressChanged(SeekBar seekbar, int progress, boolean fromUser) { tCount.setText(String.valueOf(progress + 1)); } @Override public void onStartTrackingTouch(SeekBar p1) { } @Override public void onStopTrackingTouch(SeekBar p1) { } }); checkDownloadOptions(); //int def = mPrefs.getInt("threads", 4); int def = 3; threads.setProgress(def - 1); tCount.setText(String.valueOf(def)); name.setText(createFileName(arguments.getString(TITLE))); toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem item) { if (item.getItemId() == R.id.okay) { download(); return true; } else { return false; } } }); } protected void checkDownloadOptions() { View view = getView(); Bundle arguments = getArguments(); CheckBox audio = (CheckBox) view.findViewById(R.id.audio); CheckBox video = (CheckBox) view.findViewById(R.id.video); if (arguments.getString(AUDIO_URL) == null) { audio.setVisibility(View.GONE); } else if (arguments.getString(VIDEO_URL) == null) { video.setVisibility(View.GONE); } } /** * #143 #44 #42 #22: make shure that the filename does not contain illegal chars. * This should fix some of the "cannot download" problems. * */ private String createFileName(String fName) { // from http://eng-przemelek.blogspot.de/2009/07/how-to-create-valid-file-name.html List<String> forbiddenCharsPatterns = new ArrayList<>(); forbiddenCharsPatterns.add("[:]+"); // Mac OS, but it looks that also Windows XP forbiddenCharsPatterns.add("[\\*\"/\\\\\\[\\]\\:\\;\\|\\=\\,]+"); // Windows forbiddenCharsPatterns.add("[^\\w\\d\\.]+"); // last chance... only latin letters and digits String nameToTest = fName; for (String pattern : forbiddenCharsPatterns) { nameToTest = nameToTest.replaceAll(pattern, "_"); } return nameToTest; } //download audio, video or both? private void download() { View view = getView(); Bundle arguments = getArguments(); final EditText name = (EditText) view.findViewById(R.id.file_name); final SeekBar threads = (SeekBar) view.findViewById(R.id.threads); CheckBox audio = (CheckBox) view.findViewById(R.id.audio); CheckBox video = (CheckBox) view.findViewById(R.id.video); String fName = name.getText().toString().trim(); // todo: add timeout? would be bad if the thread gets locked dueto this. while (mBinder == null) ; if (audio.isChecked()) { int res = mManager.startMission(arguments.getString(AUDIO_URL), fName + arguments.getString(FILE_SUFFIX_AUDIO), threads.getProgress() + 1); mBinder.onMissionAdded(mManager.getMission(res)); } if (video.isChecked()) { int res = mManager.startMission(arguments.getString(VIDEO_URL), fName + arguments.getString(FILE_SUFFIX_VIDEO), threads.getProgress() + 1); mBinder.onMissionAdded(mManager.getMission(res)); } getDialog().dismiss(); } private void download(String url, String title, String fileSuffix, File downloadDir, Context context) { File saveFilePath = new File(downloadDir, createFileName(title) + fileSuffix); long id = 0; Log.i(TAG, "Started downloading '" + url + "' => '" + saveFilePath + "' #" + id); if (App.isUsingTor()) { //if using Tor, do not use DownloadManager because the proxy cannot be set //we'll see later FileDownloader.downloadFile(getContext(), url, saveFilePath, title); } else { Intent intent = new Intent(getContext(), MainActivity.class); intent.setAction(MainActivity.INTENT_DOWNLOAD); intent.setData(Uri.parse(url)); intent.putExtra("fileName", createFileName(title) + fileSuffix); startActivity(intent); } } }