Hua/Aria
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

数据库方法实现

Browse Source
This commit is contained in:
lyy
2016-08-11 23:19:20 +08:00
parent bba0ccbdb1
commit af40d3049d
3 changed files with 337 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
downloadutil/src/main/java/com/arialyy/downloadutil/core/Task.java
View File

@ -6,8 +6,10 @@ import android.os.Handler;
import android.util.Log;
import com.arialyy.downloadutil.DownloadManager;
import com.arialyy.downloadutil.entity.DownloadEntity;
import com.arialyy.downloadutil.inf.IDownloadListener;
import com.arialyy.downloadutil.util.DownLoadUtil;
import com.arialyy.downloadutil.util.SQLHelper;
import java.net.HttpURLConnection;
@ -17,21 +19,12 @@ import java.net.HttpURLConnection;
*/
public class Task {
public static final String TAG = "Task";
/**
* 下载路径
*/
String downloadUrl;
/**
* 保存路径
*/
String downloadPath;
/**
* 下载监听
*/
DownloadEntity downloadEntity;
IDownloadListener listener;
Handler outHandler;
Context context;
DownLoadUtil util;
SQLHelper sqlHelper;
private Task() {
util = new DownLoadUtil();
@ -45,9 +38,9 @@ public class Task {
Log.d(TAG, "任务正在下载");
} else {
if (listener == null) {
listener = new DownloadListener(context, outHandler);
listener = new DownloadListener(context, downloadEntity, outHandler);
}
util.download(context, downloadUrl, downloadPath, listener);
util.download(context, downloadEntity.getDownloadUrl(), downloadEntity.getDownloadPath(), listener);
}
}
@ -67,6 +60,13 @@ public class Task {
util.cancelDownload();
}
/**
* 存储下载实体
*/
private void saveDownloadEntity(DownloadEntity entity) {
}
/**
* 下载监听类
*/
@ -75,11 +75,13 @@ public class Task {
Context context;
Intent sendIntent;
long INTERVAL = 1024 * 10; //10k大小的间隔
long lastLen = 0; //上一次发送长度
long lastLen = 0; //上一次发送长度
DownloadEntity downloadEntity;
public DownloadListener(Context context, Handler outHandler) {
public DownloadListener(Context context, DownloadEntity downloadEntity, Handler outHandler) {
this.context = context;
this.outHandler = outHandler;
this.downloadEntity = downloadEntity;
sendIntent = new Intent();
sendIntent.addCategory(context.getPackageName());
}
@ -87,30 +89,27 @@ public class Task {
@Override
public void onPreDownload(HttpURLConnection connection) {
super.onPreDownload(connection);
long len = connection.getContentLength();
long len = connection.getContentLength();
Intent preIntent = new Intent();
preIntent.addCategory(context.getPackageName());
downloadEntity.setFileSize(len);
}
@Override
public void onResume(long resumeLocation) {
super.onResume(resumeLocation);
sendIntent.putExtra(DownloadManager.RESUME_LOCATION, resumeLocation);
}
@Override
public void onStart(long startLocation) {
super.onStart(startLocation);
sendIntent.putExtra(DownloadManager.START_LOCATION, startLocation);
}
@Override
public void onProgress(long currentLocation) {
super.onProgress(currentLocation);
if (currentLocation - lastLen > INTERVAL) { //不要太过于频繁发送广播
sendIntent.putExtra("progress", currentLocation);
sendBroadcast(sendIntent);
sendIntent.putExtra(DownloadManager.ACTION_RUNNING, currentLocation);
lastLen = currentLocation;
}
}
@ -118,7 +117,6 @@ public class Task {
@Override
public void onStop(long stopLocation) {
super.onStop(stopLocation);
sendIntent.putExtra(DownloadManager.STOP_LOCATION, stopLocation);
}
@Override
@ -138,16 +136,14 @@ public class Task {
}
public static class Builder {
String downloadUrl;
String downloadPath;
DownloadEntity downloadEntity;
IDownloadListener listener;
Handler outHandler;
Context context;
public Builder(Context context, String downloadUrl, String downloadPath) {
public Builder(Context context, DownloadEntity downloadEntity) {
this.context = context;
this.downloadUrl = downloadUrl;
this.downloadPath = downloadPath;
this.downloadEntity = downloadEntity;
}
public Builder setDownloadListener(IDownloadListener listener) {
@ -163,13 +159,11 @@ public class Task {
public Task builder() {
Task task = new Task();
task.context = context;
task.downloadUrl = downloadUrl;
task.downloadPath = downloadPath;
task.downloadEntity = downloadEntity;
task.listener = listener;
task.outHandler = outHandler;
return task;
}
}
}

150
downloadutil/src/main/java/com/arialyy/downloadutil/entity/DownloadEntity.java Normal file
View File

@ -0,0 +1,150 @@
package com.arialyy.downloadutil.entity;
import android.os.Parcel;
import android.os.Parcelable;
/**
* Created by lyy on 2015/12/25.
* 下载实体
*/
public class DownloadEntity implements Parcelable, Cloneable {
/**
* 其它状态
*/
public static final int STATE_OTHER = 7;
/**
* 失败状态
*/
public static final int STATE_FAIL = 0;
/**
* 完成状态
*/
public static final int STATE_COMPLETE = 1;
/**
* 停止状态
*/
public static final int STATE_STOP = 2;
/**
* 未开始状态
*/
public static final int STATE_WAIT = 3;
/**
* 未完成状态
*/
public static final int STATE_UN_COMPLETE = 4;
/**
* 下载中
*/
public static final int STATE_DOWNLOAD_ING = 5;
private String downloadUrl; //下载路径
private String downloadPath; //保存路径
private long completeTime; //完成时间
private long fileSize = 1;
private int state = STATE_WAIT;
private boolean isDownloadComplete = false; //是否下载完成
private long currentProgress = 0; //当前下载进度
public String getDownloadUrl() {
return downloadUrl;
}
public long getCompleteTime() {
return completeTime;
}
public void setCompleteTime(long completeTime) {
this.completeTime = completeTime;
}
public void setDownloadUrl(String downloadUrl) {
this.downloadUrl = downloadUrl;
}
public String getDownloadPath() {
return downloadPath;
}
public void setDownloadPath(String downloadPath) {
this.downloadPath = downloadPath;
}
public long getFileSize() {
return fileSize;
}
public void setFileSize(long fileSize) {
this.fileSize = fileSize;
}
public int getState() {
return state;
}
public void setState(int state) {
this.state = state;
}
public boolean isDownloadComplete() {
return isDownloadComplete;
}
public void setDownloadComplete(boolean downloadComplete) {
isDownloadComplete = downloadComplete;
}
public long getCurrentProgress() {
return currentProgress;
}
public void setCurrentProgress(long currentProgress) {
this.currentProgress = currentProgress;
}
@Override
public DownloadEntity clone() throws CloneNotSupportedException {
return (DownloadEntity) super.clone();
}
public DownloadEntity() {
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(this.downloadUrl);
dest.writeString(this.downloadPath);
dest.writeLong(this.completeTime);
dest.writeLong(this.fileSize);
dest.writeInt(this.state);
dest.writeByte(this.isDownloadComplete ? (byte) 1 : (byte) 0);
dest.writeLong(this.currentProgress);
}
protected DownloadEntity(Parcel in) {
this.downloadUrl = in.readString();
this.downloadPath = in.readString();
this.completeTime = in.readLong();
this.fileSize = in.readLong();
this.state = in.readInt();
this.isDownloadComplete = in.readByte() != 0;
this.currentProgress = in.readLong();
}
public static final Creator<DownloadEntity> CREATOR = new Creator<DownloadEntity>() {
@Override
public DownloadEntity createFromParcel(Parcel source) {
return new DownloadEntity(source);
}
@Override
public DownloadEntity[] newArray(int size) {
return new DownloadEntity[size];
}
};
}

163
downloadutil/src/main/java/com/arialyy/downloadutil/util/SQLHelper.java Normal file
View File

@ -0,0 +1,163 @@
package com.arialyy.downloadutil.util;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.support.annotation.NonNull;
import com.arialyy.downloadutil.entity.DownloadEntity;
import java.util.ArrayList;
import java.util.List;
/**
* Created by lyy on 2016/8/11.
* 数据库帮助类
*/
public class SQLHelper extends SQLiteOpenHelper {
public static final String DB_NAME = "ARIA_LYY_DB";
public static final String TABLE_NAME = "ARIA_LYY_DOWNLOAD";
public SQLHelper(Context context) {
this(context, DB_NAME, null, 1);
}
private SQLHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version) {
super(context, name, factory, version);
}
@Override
public void onCreate(SQLiteDatabase db) {
String sql = "create table " + TABLE_NAME + "(" +
"url varchar PRIMARY KEY, " +
"path varchar, " +
"completeTime interger, " +
"fileSize interger, " +
"state smallint , " +
"isDownloadComplete smallint, " +
"currentProgress interger" +
")";
db.execSQL(sql);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
/**
* 获取所有下载实体
*/
public List<DownloadEntity> getAllEntity(@NonNull SQLiteDatabase db) {
List<DownloadEntity> list = new ArrayList<>();
Cursor c = db.query(TABLE_NAME, null, null, null, null, null, null);
if (c.moveToFirst()) {
while (c.moveToNext()) {
list.add(cursor2Entity(c));
}
}
c.close();
return list;
}
/**
* 更新下载实体
*/
public void updateEntity(@NonNull SQLiteDatabase db, DownloadEntity entity) {
String whereClause = "url=?";
String[] whereArgs = {entity.getDownloadUrl()};
db.update(TABLE_NAME, createCv(entity), whereClause, whereArgs);
}
/**
* 删除下载实体
*/
public void delEntity(@NonNull SQLiteDatabase db, DownloadEntity entity) {
delEntity(db, entity.getDownloadUrl());
}
/**
* 通过下载链接删除下载实体
*/
public void delEntity(@NonNull SQLiteDatabase db, String downloadUrl) {
String whereClause = "url=?";
String[] whereArgs = {downloadUrl};
db.delete(TABLE_NAME, whereClause, whereArgs);
}
/**
* 通过下载链接查找下载实体
*
* @param downloadUrl
* @return
*/
public DownloadEntity findEntity(@NonNull SQLiteDatabase db, @NonNull String downloadUrl) {
DownloadEntity entity;
String sql = "select * from " + TABLE_NAME + "where url=?";
Cursor c = db.rawQuery(sql, new String[]{downloadUrl});
if (c.getCount() <= 0) {
c.close();
return null;
} else {
c.moveToFirst();
entity = cursor2Entity(c);
}
c.close();
return entity;
}
/**
* 存储下载实体
*
* @param entity
*/
public void savaEntity(@NonNull SQLiteDatabase db, @NonNull DownloadEntity entity) {
DownloadEntity temp = findEntity(db, entity.getDownloadUrl());
if (temp == null) {
db.insert(TABLE_NAME, null, createCv(entity));
} else {
updateEntity(db, entity);
}
}
/**
* 游标转实体
*
* @param c
* @return
*/
private DownloadEntity cursor2Entity(Cursor c) {
DownloadEntity entity;
entity = new DownloadEntity();
entity.setDownloadUrl(c.getString(c.getColumnIndex("url")));
entity.setDownloadPath(c.getString(c.getColumnIndex("path")));
entity.setCompleteTime(c.getLong(c.getColumnIndex("completeTime")));
entity.setFileSize(c.getLong(c.getColumnIndex("fileSize")));
entity.setState(c.getInt(c.getColumnIndex("state")));
// 0 ==> false, 1 ==> true
entity.setDownloadComplete(c.getInt(c.getColumnIndex("isDownloadComplete")) == 0);
entity.setCurrentProgress(c.getLong(c.getColumnIndex("currentProgress")));
return entity;
}
/**
* 创建ContentValues
*
* @param entity
* @return
*/
private ContentValues createCv(@NonNull DownloadEntity entity) {
ContentValues cv = new ContentValues();
cv.put("url", entity.getDownloadUrl());
cv.put("path", entity.getDownloadPath());
cv.put("completeTime", entity.getCompleteTime());
cv.put("fileSize", entity.getFileSize());
cv.put("state", entity.getState());
// 0 ==> false, 1 ==> true
cv.put("isDownloadComplete", entity.isDownloadComplete() ? 1 : 0);
cv.put("currentProgress", entity.getCurrentProgress());
return cv;
}
}