android多媒体数据库添加音视频数据项

上次提到手机全盘扫描歌曲or视频文件的例子，后来应用发现当app所用的是系统对媒体数据库的时候就不怎么适用了，现在写一个往系统多媒体数据库中添加数据项的例子。因为SDK 4.4以上就不能向系统发送广播更新 多媒体数据库，且 MediaScannerConnection.scanFile 方法所耗时间也太长，且是一个异步操作，等待其返回又是一个麻烦的操作。所以我的思路是：还是像上次一样 全盘扫描 音频文件，当发现有的时候，再判断 数据库中是否有，没有的话就添加进去。当然我的判断有没有是直接根据名字判断的，想要精确点的话，可以用路径去判断，好了，不说废话了，直接贴代码：

import java.io.File;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnClickListener;
import android.database.Cursor;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.provider.MediaStore;
import android.widget.Toast;

public class MusicFileScanClient{
private ProgressDialog scanDialog;
private boolean songs = true;
private Context whac;
private int beforecount = 0;
private Handler handler = null;
int sd;
private boolean iscancel = false;
private boolean b = false;
private static MusicFileScanClient instance;
private ContentResolver resolver;

public static MusicFileScanClient getInstance() {
if (null == instance) {
instance = new MusicFileScanClient();
}
return instance;
}
public MusicFileScanClient(){

}
public void init(Context ctx, String path){
// client = new MusicSannerClient();
this.whac = ctx;
scanDialog = new ProgressDialog(ctx);
scanDialog.setIndeterminate(true);
// FIXME 文字替换为资源
scanDialog.setMessage(ctx.getString(R.string.scanning));
scanDialog.setButton(ctx.getString(R.string.cancel), new OnClickListener(){
@Override
public void onClick(DialogInterface arg0, int arg1) {
// TODO Auto-generated method stub
iscancel = true;
}
});
//不能取消
scanDialog.setCancelable(false);
String mPath = "/mnt";
Log.d("MusicFileScanClient", "mPath="+mPath);
handler = new Handler(){
public void handleMessage(Message msg)
{
switch (msg.what)
{
case 1:
sd = afterScan() - beforecount;
if(scanDialog != null){
scanDialog.dismiss();;
}
showWarnDialog(whac.getString(R.string.scan_result) + sd + whac.getString(R.string.scan_result1));
break;
case 2:
if(scanDialog != null){
scanDialog.dismiss();;
}
showWarnDialog(whac.getString(R.string.scan_result0) + sd + whac.getString(R.string.scan_result1));
break;
case 3:
if(scanDialog != null){
scanDialog.dismiss();;
}
break;
}
}
};
}

private void Scan(File filePath1){
if (filePath1 != null && !iscancel) {
if (filePath1.isDirectory() && !iscancel) {
File[] files = filePath1.listFiles();
if (files != null) {
for (int i = 0; i < files.length; i++) {
if(!iscancel){
if (files[i].isDirectory())
Scan(files[i]);
else {
if(songs){
for(int k = 0; k < sFilter.length && !iscancel; k++){
if(files[i].getName().toLowerCase().endsWith(sFilter[k])){
if(cursor != null){
cursor.moveToFirst();
for(int j = 0; j < cursor.getCount(); j++){
if(cursor.getString(0).equals(files[i].getName())){
break;
}
if(!cursor.moveToNext()){
String mimeType = "audio/*";
ContentValues values = new ContentValues();
values.put(MediaStore.MediaColumns.DATA, files[i].getAbsolutePath());
values.put(MediaStore.MediaColumns.TITLE, files[i].getName());
values.put(MediaStore.MediaColumns.MIME_TYPE, mimeType);
values.put(MediaStore.MediaColumns.SIZE, files[i].length());

values.put(MediaStore.Audio.Media.DISPLAY_NAME, files[i].getName());
values.put(MediaStore.Audio.Media.DATA, files[i].getAbsolutePath());
values.put(MediaStore.Audio.Media.TITLE, files[i].getName());
values.put(MediaStore.Audio.Media.IS_MUSIC, true);
Uri uri = MediaStore.Audio.Media.getContentUriForPath(files[i].getAbsolutePath());
whac.getContentResolver().delete(uri, null, null);
final Uri newUri = whac.getContentResolver().insert(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, values);
//whac.getContentResolver().update(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,values, null, null);
//updateGallery(files[i].getAbsolutePath());
Log.d("scan music file = ", "----------->newUri = " + newUri);
Log.d("scan music file = ", "scan music file = " + files[i].getName());
}
}
}
}
}
}else{
for(int k = 0; k < sFiltervideo.length && !iscancel; k++){
if(files[i].getName().toLowerCase().endsWith(sFiltervideo[k])){
if(cursor != null){
cursor.moveToFirst();
for(int j = 0; j < cursor.getCount(); j++){
if(cursor.getString(0).equals(files[i].getName())){
break;
}
if(!cursor.moveToNext()){
ContentValues values = new ContentValues();
values.put(MediaStore.Video.Media.TITLE, files[i].getName());
values.put(MediaStore.Video.Media.DATA, files[i].getAbsolutePath());
values.put(MediaStore.Video.Media.DISPLAY_NAME, files[i].getName());
whac.getContentResolver().insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, values);

//resolver.update(MediaStore.Video.Playlists.EXTERNAL_CONTENT_URI,values, null, null);
//updateGallery(files[i].getAbsolutePath());
}
}
}
}
}
}
}
}
}
}
}
}
}

private final String[] sFilter = {
".aac",".ogg",".mp3",".flac",".alac",
".ape",".wma",".wav",".au",".aif",".aiff",
".m3u",".m4a",".asf",".mms"
};

private final String[] sFiltervideo = {".avi",".3gp",".rmvb",".mp4",".flv",};

public void showWarnDialog(String str){
new AlertDialog.Builder(whac)
.setMessage(str)
.setPositiveButton(R.string.sure,
new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialoginterface, int i){
dialoginterface.dismiss(); //按钮事件
}
})
.show();
}

public void scanfile(final File f,boolean isSongs) {
scanDialog.show();
resolver =  whac.getContentResolver();
songs = isSongs;
b = false;
iscancel = false;
beforecount = beforeScan();
new Thread(new Runnable() {
public void run(){
Scan(f);
if(!iscancel){
handler.sendEmptyMessage(1);
if(cursor != null){
cursor.close();
cursor = null;
}
}
}
}).start();
}

Cursor cursor = null;
private int beforeScan(){
int count = 0;
if(songs){
cursor = MusicUtils.query(whac,
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Audio.Media.DISPLAY_NAME },
MediaStore.Audio.Media.IS_MUSIC + "=1", null,
MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
}else{
cursor = MusicUtils.query(whac,
MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Video.Media.DISPLAY_NAME },
MediaStore.Video.Media.TITLE + " != ''", null,
MediaStore.Video.Media.TITLE + " COLLATE UNICODE");
}

count = cursor.getCount();
//cursor.close();
return count;
}

private int afterScan(){
int count = 0;
Cursor cursor1 = null;
if(songs){
cursor1 = MusicUtils.query(whac,
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Audio.Media.DISPLAY_NAME },
MediaStore.Audio.Media.IS_MUSIC + "=1", null,
MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
}else{
cursor1 = MusicUtils.query(whac,
MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Video.Media.DISPLAY_NAME },
MediaStore.Video.Media.TITLE + " != ''", null,
MediaStore.Video.Media.TITLE + " COLLATE UNICODE");
}
if(cursor1 != null){
count = cursor1.getCount();
cursor1.close();
}

return count;
}
}