private
int id;
private string url;
private string filename;
private
int length;
private
int finished;
threadinfo類是記錄執行緒資訊
private
int id;
private string url;
private
int start;
private
int end;
private
int finished;
dbhelper建立我的資料庫,單例模式
private
static
final string db_name="download.db";
public
static dbhelper helper;
private
static string sql_create="create table if not exists thread_info(_id integer primary key autoincrement,thread_id integer," +
"url text,start integer,end integer,finished integer)";
private
static string sql_drop="drop table if exists thread_info";
public
static
synchronized dbhelper getinstance(context mcontext)
return helper;
}private
dbhelper(context context, string name, sqlitedatabase.curso***ctory factory, int version)
@override
public
void
oncreate(sqlitedatabase db)
@override
public
void
onupgrade(sqlitedatabase db, int oldversion, int newversion)
**資料訪問介面的實現
* created by administrator on 2017/7/19.
*/public
class
threaddaoimp
implements
threaddao
@override
public
void
insertthread(threadinfos threadinfos) );
db.close();
}@override
public
void
deletethread(string url, int thredid) );
db.close();
}@override
public
void
updatethread(string url, int threadid, int finished) );
db.close();
}@override
public listgetthreads(string url) );
while (cursor.movetonext())
cursor.close();
db.close();
return list;
}@override
public
boolean
i***ists(string url, int threadid) );
boolean exists=cursor.movetonext();
cursor.close();
db.close();
return exists;
}} * created by administrator on 2017/7/19.
*/public
class
downloadtask
public
void
download()
else}}
class downloadthread extends thread
@override
public
void
run()
randomaccessfile raf=null;
try
if (system.currenttimemillis()-time>300)
if (ispaused)
}threaddaoimp.deletethread(threadinfos.geturl(),threadinfos.getid());
}} catch (malformedurlexception e) catch (ioexception e) finally
} catch (ioexception e) }}
}}/**資料庫訪問介面
* created by administrator on 2017/7/19.
*/public
inte***ce
threaddao
/** * created by administrator on 2017/7/19.
*/public
class
downloadservice
extends
service}};
@override
public
intonstartcommand(intent intent, int flags, int startid)
else
if (action_stop.equals(intent.getaction()))
}return
super.onstartcommand(intent, flags, startid);
}@nullable
@override
public ibinder onbind(intent intent)
class initthread extends thread
@override
public
void
run()
file dir=new file(download_path);
if (!dir.exists())
//在本地建立檔案
file file=new file(dir,fileinfos.getfilename());
raf = new randomaccessfile(file, "rwd");
//設定檔案長度
raf.setlength(length);
}fileinfos.setlength(length);
message message = handler.obtainmessage();
message.what=msg_init;
message.obj=fileinfos;
handler.sendmessage(message);
} catch (malformedurlexception e) catch (ioexception e) finally
} catch (ioexception e) }}
}}public
class
mainactivity
extends
implements
view.onclicklistener
private
void
initdata()
private
void
initfileinfo()
private
void
initlistener()
@override
public
void
onclick(view v)
}@override
protected
void
ondestroy()
class mybroadcastreceiver extends broadcastreceiver}}
}}這裡寫**片
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