ContentResolver的使用

早期的部分代码

public static ArrayList getAllContacts(Context context) {ContentResolver resolver = context.getContentResolver();// 1. 查询raw_contacts表，把联系人的id取出来Uri uri = Uri.parse("content://com.android.contacts/raw_contacts");Uri datauri = Uri.parse("content://com.android.contacts/data");ArrayList infos = new ArrayList();Cursor cursor = resolver.query(uri, new String[] { "contact_id" },null, null, null);while (cursor.moveToNext()) {String id = cursor.getString(0);if (id != null) {System.out.println("联系人id：" + id);PhoneContact info = new PhoneContact();info.setId(id);// 2. 根据联系人的id，查询data表，把这个id的数据取出来// 系统api 查询data表的时候 不是真正的查询data表 而是查询的data表的视图Cursor dataCursor = resolver.query(datauri, new String[] {"data1", "mimetype" }, "raw_contact_id=?",new String[] { id }, null);while (dataCursor.moveToNext()) {String data1 = dataCursor.getString(0);String mimetype = dataCursor.getString(1);if ("vnd.android.cursor.item/name".equals(mimetype)) {System.out.println("姓名=" + data1);info.setName(data1);} else if ("vnd.android.cursor.item/email_v2".equals(mimetype)) {System.out.println("邮箱=" + data1);info.setEmail(data1);} else if ("vnd.android.cursor.item/phone_v2".equals(mimetype)) {System.out.println("电话=" + data1);info.setPhone(data1);} else if ("vnd.android.cursor.item/im".equals(mimetype)) {System.out.println("QQ=" + data1);info.setQq(data1);}else if("vnd.android.cursor.item/sip_address".equals(mimetype)){System.out.println("地址=" + data1);info.setAddress(data1);}}//判断name是否为空if(info.getName()==null){}else{infos.add(info);}dataCursor.close();}}cursor.close();return infos;}

public static void initMusic(Context context,Handler handler) {songLists.clear();ContentResolver resolver = context.getContentResolver();Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;String[] projection = { MediaStore.Audio.Media.TITLE, MediaStore.Audio.Media.ARTIST, MediaStore.Audio.Media.DATA,MediaStore.Audio.Media.DURATION, MediaStore.Audio.Media._ID };Cursor c = resolver.query(uri, projection, null, null, null);try {while (c.moveToNext()) {String name = c.getString(c.getColumnIndex(MediaStore.Audio.Media.TITLE));String artist = c.getString(c.getColumnIndex(MediaStore.Audio.Media.ARTIST));String path = c.getString(c.getColumnIndex(MediaStore.Audio.Media.DATA));String duration = c.getString(c.getColumnIndex(MediaStore.Audio.Media.DURATION));String id = c.getString(c.getColumnIndex(MediaStore.Audio.Media._ID));Music music = new Music(name, artist, path, duration, id);songLists.add(music);}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {if (c != null) {c.close();}}handler.sendEmptyMessage(1);}

public static void initVideo(Context context, Handler handler) {mhandler = handler;VideoLists.clear();mContext=context;ContentResolver resolver = context.getContentResolver();Uri uri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;String[] projection = { MediaStore.Video.Media.TITLE,MediaStore.Video.Media.ARTIST, MediaStore.Video.Media.DATA,MediaStore.Video.Media.DURATION, MediaStore.Video.Media._ID };Cursor c = resolver.query(uri, projection, null, null, null);try {while (c.moveToNext()) {String name = c.getString(c.getColumnIndex(MediaStore.Audio.Media.TITLE));String artist = c.getString(c.getColumnIndex(MediaStore.Audio.Media.ARTIST));String path = c.getString(c.getColumnIndex(MediaStore.Audio.Media.DATA));String duration = c.getString(c.getColumnIndex(MediaStore.Audio.Media.DURATION));String id = c.getString(c.getColumnIndex(MediaStore.Audio.Media._ID));Video video = new Video(name, artist, path, duration, id);System.out.println("aaaa--111111--" + video.toString());VideoLists.add(video);}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {if (c != null) {c.close();}}

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