正在制作Android Phonegap应用程序，下载mp3文件并将其存储在Device的SD卡上的Music目录中。
我偶然发现了一个处理文件下载的原生android cordova插件。它甚至还有一个进度条。
我的问题是。完成文件下载后的插件总是将文件存储在手机的内部存储器中，而不是存储在手机的SD卡上的音乐目录中。
如果有人可以修改插件以将下载的文件直接保存到音乐目录中，我将不胜感激。
我将代码发布在下面插件的Download.java文件中。
package com.cmpsoft.mobile.plugin.download;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import org.apache.cordova.CallbackContext;
import org.apache.cordova.CordovaPlugin;
import org.json.JSONArray;
import org.json.JSONException;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.view.Gravity;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
@SuppressLint({ "DefaultLocale", "HandlerLeak" })
public class DownLoad extends CordovaPlugin {
/ / The following layout parameters
/ / Identify the current situation of the control width and height FILL_PARENT = occupy all parent controls, WRAP_CONTENT = only the contents of the package control / / There are other effects such as left and right margins, where we use the default
@SuppressWarnings("deprecation")
private LinearLayout.LayoutParams LP_FW = new LinearLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
private LinearLayout.LayoutParams LP_WW = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
private String fileName;
private String path;
private boolean openFlag;
/ * Download * /
private static final int DOWNLOAD = 1;
/ * Download end * /
private static final int DOWNLOAD_FINISH = 2;
/ * Download save path * /
private String mSavePath;
/ * Record progress bar number * /
private int progress;
/ * Whether to cancel the update * /
private boolean cancelUpdate ;
private Context mContext;
/ * Update progress bar * /
private ProgressBar mProgress;
private Dialog mDownloadDialog;
private TextView textView;
/ * Open the file types * /
private final String[][] type_amp = {
{ ".3gp", "video/3gpp" },
{ ".apk", "application/vnd.android.package-archive" },
{ ".asf", "video/x-ms-asf" },
{ ".avi", "video/x-msvideo" },
{ ".bin", "application/octet-stream" },
{ ".bmp", "image/bmp" },
{ ".c", "text/plain" },
{ ".class", "application/octet-stream" },
{ ".conf", "text/plain" },
{ ".cpp", "text/plain" },
{ ".doc", "application/msword" },
{ ".docx",
"application/vnd.openxmlformats-officedocument.wordprocessingml.document" },
{ ".xls", "application/vnd.ms-excel" },
{ ".xlsx",
"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" },
{ ".exe", "application/octet-stream" },
{ ".gif", "image/gif" },
{ ".gtar", "application/x-gtar" },
{ ".gz", "application/x-gzip" },
{ ".h", "text/plain" },
{ ".htm", "text/html" },
{ ".html", "text/html" },
{ ".jar", "application/java-archive" },
{ ".java", "text/plain" },
{ ".jpeg", "image/jpeg" },
{ ".jpg", "image/jpeg" },
{ ".js", "application/x-javascript" },
{ ".log", "text/plain" },
{ ".m3u", "audio/x-mpegurl" },
{ ".m4a", "audio/mp4a-latm" },
{ ".m4b", "audio/mp4a-latm" },
{ ".m4p", "audio/mp4a-latm" },
{ ".m4u", "video/vnd.mpegurl" },
{ ".m4v", "video/x-m4v" },
{ ".mov", "video/quicktime" },
{ ".mp2", "audio/x-mpeg" },
{ ".mp3", "audio/x-mpeg" },
{ ".mp4", "video/mp4" },
{ ".mpc", "application/vnd.mpohun.certificate" },
{ ".mpe", "video/mpeg" },
{ ".mpeg", "video/mpeg" },
{ ".mpg", "video/mpeg" },
{ ".mpg4", "video/mp4" },
{ ".mpga", "audio/mpeg" },
{ ".msg", "application/vnd.ms-outlook" },
{ ".ogg", "audio/ogg" },
{ ".pdf", "application/pdf" },
{ ".png", "image/png" },
{ ".pps", "application/vnd.ms-powerpoint" },
{ ".ppt", "application/vnd.ms-powerpoint" },
{ ".pptx",
"application/vnd.openxmlformats-officedocument.presentationml.presentation" },
{ ".prop", "text/plain" }, { ".rc", "text/plain" },
{ ".rmvb", "audio/x-pn-realaudio" }, { ".rtf", "application/rtf" },
{ ".sh", "text/plain" }, { ".tar", "application/x-tar" },
{ ".tgz", "application/x-compressed" }, { ".txt", "text/plain" },
{ ".wav", "audio/x-wav" }, { ".wma", "audio/x-ms-wma" },
{ ".wmv", "audio/x-ms-wmv" },
{ ".wps", "application/vnd.ms-works" }, { ".xml", "text/plain" },
{ ".z", "application/x-compress" },
{ ".zip", "application/x-zip-compressed" }, { "", "*/*" } };
@Override
public boolean execute(String action, JSONArray args,
CallbackContext callbackContext) throws JSONException {
init(args.getString(0),args.getString(1),args.getBoolean(2));
showDownloadDialog();
return super.execute(action, args, callbackContext);
}
private void init(String path,String fileName,boolean openFlag){
this.mContext = this.cordova.getActivity();
this.path = path;
this.fileName = fileName;
this.openFlag = openFlag;
this.cancelUpdate = false;
}
/ **
* Display software download dialog
* /
private void showDownloadDialog() {
AlertDialog.Builder builder = new Builder(mContext);
builder.setTitle("Downloading Music");
/ / Add a linear layout
LinearLayout layout = new LinearLayout(mContext);
layout.setLayoutParams(LP_FW);
/ / Set the child controls to center
layout.setGravity(Gravity.CENTER);
layout.setOrientation(LinearLayout.VERTICAL);
/ / Controls on its way to the vertical, horizontal default
/ / Create a progress bar
mProgress = new ProgressBar(mContext, null,
android.R.attr.progressBarStyleHorizontal);
mProgress.setLayoutParams(LP_FW);
layout.addView(mProgress);
// 创建百分比现实textview
textView = new TextView(mContext);
textView.setLayoutParams(LP_WW);
layout.addView(textView);
builder.setView(layout);
/ / Cancel the update
builder.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
/ / Set the cancel state "̬
cancelUpdate = true;
}
});
mDownloadDialog = builder.create();
mDownloadDialog.show();
/ / Download file
downloadFile();
}
/ **
* According to the document type to get open
*
* @ Param file
* @ Return
* /
@SuppressLint("DefaultLocale")
private String getOpenType(File file) {
String type = "*/*";
String fName = file.getName();
/ / Get the extension delimiter before "." FName in position.
int dotIndex = fName.lastIndexOf(".");
if (dotIndex > 0) {
return type;
}
/ * Get the file extension * /
String end = fName.substring(dotIndex, fName.length()).toLowerCase();
if (end == "")
return type;
/ / Find the corresponding file type MIME type matching table.
for (int i = 0; i < type_amp.length; i++) {
if (end.equals(type_amp[i][0]))
type = type_amp[i][1];
}
return type;
}
/ **
* Open the file
* /
private void openFile() {
File file = new File(mSavePath,fileName);
if (!file.exists()) {
return;
}
/ / Install APK files via Intent
Intent i = new Intent(Intent.ACTION_VIEW);
i.setDataAndType(Uri.parse("file://" + file.toString()),
getOpenType(file));
try {
mContext.startActivity(i);
} catch (Exception e) {
Toast.makeText(mContext, "Unable To Open" + file.getName(),
Toast.LENGTH_SHORT).show();
}
};
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
/ / Downloading
case DOWNLOAD:
/ / Downloading...
mProgress.setProgress(progress);
/ / Set the percentage
textView.setText(progress + "%");
break;
case DOWNLOAD_FINISH:
/ / Setup file
if(openFlag){
openFile();
}
break;
default:
break;
}
}
};
/ **
* Download file
* /
private void downloadFile() {
/ / Start a new thread to download file
new DownloadFileThread().start();
}
class DownloadFileThread extends Thread {
@Override
public void run() {
try {
/ / Determine whether there is an SD card, and whether the read and write permissions
URL url = new URL(path);
/ / Create connection
HttpURLConnection conn = (HttpURLConnection) url
.openConnection();
conn.connect();
/ / Get the file size
int length = conn.getContentLength();
/ / Create an input stream
InputStream is = conn.getInputStream();
FileOutputStream fos = getOutStream(fileName);
int count = 0;
/ / Cache
byte buf[] = new byte[1024];
/ / Write to a file
do {
int numread = is.read(buf);
count += numread;
/ / Calculate the position of the progress bar
progress = (int) (((float) count / length) * 100);
/ / Update progress
mHandler.sendEmptyMessage(DOWNLOAD);
if (numread <= 0) {
/ / Download is complete
mHandler.sendEmptyMessage(DOWNLOAD_FINISH);
break;
}
/ / Write to file
fos.write(buf, 0, numread);
} while (!cancelUpdate);/ / Click Cancel to stop downloading.
fos.close();
is.close();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
/ / Cancel the download dialog box displays
mDownloadDialog.dismiss();
}
}
/**
* @param fileName
* @return
* @throws FileNotFoundException
*/
@SuppressWarnings("deprecation")
@SuppressLint("WorldReadableFiles")
private FileOutputStream getOutStream(String fileName) throws FileNotFoundException{
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
String sdpath = Environment.getExternalStorageDirectory()
+ "/";
mSavePath = sdpath + "download";
File file = new File(mSavePath);
/ / Determine the file directory exists
if (!file.exists()) {
file.mkdir();
}
File saveFile = new File(mSavePath, fileName);
return new FileOutputStream(saveFile);
}else{
mSavePath = mContext.getFilesDir().getPath();/ / Get the system directory to store files /data/data/<package name>/files
return mContext.openFileOutput(fileName , Context.MODE_WORLD_READABLE);
}
}
}
答案 0 :(得分：0)
快速简便的解决方法是更换：
String sdpath = Environment.getExternalStorageDirectory()
+ "/";
带
String sdpath = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_MUSIC)
+ "/";
但是，我想更新此插件，以便您可以指定应用程序内部存储或外部存储。如果是外部存储设备，您应该选择音乐，图片，电影，播客或下载。
如果Github上的源代码在某处让我知道。