/*
* Copyright (C) 2007 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.development;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.BroadcastReceiver;
import android.database.sqlite.SQLiteConstraintException;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.provider.MediaStore;
import android.provider.MediaStore.Audio;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import java.util.Random;
public class MediaScannerActivity extends Activity
{
private TextView mTitle;
private int mNumToInsert = 20;
private int mArtists;
private int mAlbums;
private int mSongs;
private ContentResolver mResolver;
private Uri mAudioUri;
ContentValues mValues[] = new ContentValues[10];
Random mRandom = new Random();
StringBuilder mBuilder = new StringBuilder();
public MediaScannerActivity() {
}
/** Called when the activity is first created or resumed. */
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.media_scanner_activity);
IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MEDIA_SCANNER_STARTED);
intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
intentFilter.addDataScheme("file");
registerReceiver(mReceiver, intentFilter);
EditText t = (EditText) findViewById(R.id.numsongs);
t.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
String text = s.toString();
try {
mNumToInsert = Integer.valueOf(text);
} catch (NumberFormatException ex) {
mNumToInsert = 20;
}
setInsertButtonText();
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
});
mTitle = (TextView) findViewById(R.id.title);
mResolver = getContentResolver();
mAudioUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
for (int i = 0; i < 10; i++) {
mValues[i] = new ContentValues();
}
setInsertButtonText();
}
/** Called when the activity going into the background or being destroyed. */
@Override
public void onDestroy() {
unregisterReceiver(mReceiver);
mInsertHandler.removeMessages(0);
super.onDestroy();
}
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_MEDIA_SCANNER_STARTED)) {
mTitle.setText("Media Scanner started scanning " + intent.getData().getPath());
}
else if (intent.getAction().equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {
mTitle.setText("Media Scanner finished scanning " + intent.getData().getPath());
}
}
};
public void startScan(View v) {
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://"
+ Environment.getExternalStorageDirectory())));
mTitle.setText("Sent ACTION_MEDIA_MOUNTED to trigger the Media Scanner.");
}
private void setInsertButtonText() {
String label = getString(R.string.insertbutton, Integer.valueOf(mNumToInsert));
Button b = (Button) findViewById(R.id.insertbutton);
b.setText(label);
}
public void insertItems(View v) {
if (mInsertHandler.hasMessages(0)) {
mInsertHandler.removeMessages(0);
setInsertButtonText();
} else {
mInsertHandler.sendEmptyMessage(0);
}
}
Handler mInsertHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
if (mNumToInsert-- > 0) {
addAlbum();
runOnUiThread(mDisplayUpdater);
if (!isFinishing()) {
sendEmptyMessage(0);
}
}
}
};
Runnable mDisplayUpdater = new Runnable() {
public void run() {
mTitle.setText("Added " + mArtists + " artists, " + mAlbums + " albums, "
+ mSongs + " songs.");
}
};
// Add one more album (with 10 songs) to the database. This will be a compilation album,
// with one album artist for the album, and a separate artist for each song.
private void addAlbum() {
try {
String albumArtist = "Various Artists";
String albumName = getRandomWord(3);
int baseYear = 1969 + mRandom.nextInt(30);
for (int i = 0; i < 10; i++) {
mValues[i].clear();
String artist = getRandomName();
final ContentValues map = mValues[i];
map.put(MediaStore.MediaColumns.DATA,
"http://bogus/" + albumName + "/" + artist + "_" + i);
map.put(MediaStore.MediaColumns.TITLE,
getRandomWord(4) + " " + getRandomWord(2) + " " + (i + 1));
map.put(MediaStore.MediaColumns.MIME_TYPE, "audio/mp3");
map.put(Audio.Media.ARTIST, artist);
map.put("album_artist", albumArtist);
map.put(Audio.Media.ALBUM, albumName);
map.put(Audio.Media.TRACK, i + 1);
map.put(Audio.Media.DURATION, 4*60*1000);
map.put(Audio.Media.IS_MUSIC, 1);
map.put(Audio.Media.YEAR, baseYear + mRandom.nextInt(10));
}
mResolver.bulkInsert(mAudioUri, mValues);
mSongs += 10;
mAlbums++;
mArtists += 11;
} catch (SQLiteConstraintException ex) {
Log.d("@@@@", "insert failed", ex);
}
}
/**
* Some code to generate random names. This just strings together random
* syllables, and randomly inserts a modifier between the first
* and last name.
*/
private String[] elements = new String[] {
"ab", "am",
"bra", "bri",
"ci", "co",
"de", "di", "do",
"fa", "fi",
"ki",
"la", "li",
"ma", "me", "mi", "mo",
"na", "ni",
"pa",
"ta", "ti",
"vi", "vo"
};
private String getRandomWord(int len) {
int max = elements.length;
mBuilder.setLength(0);
for (int i = 0; i < len; i++) {
mBuilder.append(elements[mRandom.nextInt(max)]);
}
char c = mBuilder.charAt(0);
c = Character.toUpperCase(c);
mBuilder.setCharAt(0, c);
return mBuilder.toString();
}
private String getRandomName() {
boolean longfirst = mRandom.nextInt(5) < 3;
String first = getRandomWord(longfirst ? 3 : 2);
String last = getRandomWord(3);
switch (mRandom.nextInt(6)) {
case 1:
if (!last.startsWith("Di")) {
last = "di " + last;
}
break;
case 2:
last = "van " + last;
break;
case 3:
last = "de " + last;
break;
}
return first + " " + last;
}
}