我正在制作一个适用于音频文件的应用我需要实现功能，用户选择存储在SD卡上的文件 我想选择一个文件表格后端不要用户选择文件.. 我在这里看过类似的帖子，但没有人专门回答我的问题。基本上这是当用户点击“上传”按钮时我正在做的代码：.....“
public class MainActivity extends Activity implements OnClickListener {
private TextView messageText;
private Button uploadButton, btnselectpic, btnselectaudio, btnselectvideo;
private ImageView imageview;
private int serverResponseCode = 0;
private ProgressDialog dialog = null;
private String upLoadServerUri = null;
private String filepath = null;
int FLAG = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
filepath=Environment.getExternalStorageDirectory()+"/Auto call record/Incomimg/";
uploadButton = (Button) findViewById(R.id.uploadButton);
messageText = (TextView) findViewById(R.id.messageText);
//btnselectpic = (Button) findViewById(R.id.button_selectpic);
btnselectaudio = (Button) findViewById(R.id.button_selectaudio);
// btnselectvideo = (Button) findViewById(R.id.button_selectvideo);
imageview = (ImageView) findViewById(R.id.imageView_pic);
if (filepath != null) {
new Thread(new Runnable() {
public void run() {
uploadFile(filepath);
}
}).start();
}
else {
Toast.makeText(MainActivity.this, "Please try again !!!",
Toast.LENGTH_LONG).show();
}
//btnselectpic.setOnClickListener(this);
btnselectaudio.setOnClickListener(this);
// btnselectvideo.setOnClickListener(this);
uploadButton.setOnClickListener(this);
upLoadServerUri = "http://sstecindia.com/demo/map/upload/upload_to_server.php";
}
@Override
public void onClick(View arg0) {
/*if (arg0 == btnselectpic) {
FLAG = 1;
Intent intent = new Intent();
// intent.setType("video/*");
// intent.setType("audio/*");
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(
Intent.createChooser(intent, "Complete action using"), 1);
if (btnselectpic.isPressed()) {
Drawable bitmap = getResources().getDrawable(R.drawable.image);
imageview.setImageDrawable(bitmap);
}
}
else */if (arg0 == btnselectaudio) {
FLAG = 1;
Intent intent = new Intent();
// intent.setType("video/*");
intent.setType("audio/*");
// intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(
Intent.createChooser(intent, "Complete action using"), 1);
if (btnselectaudio.isPressed()) {
Drawable bitmap = getResources().getDrawable(R.drawable.audio);
imageview.setImageDrawable(bitmap);
}
}/*else if (arg0 == btnselectvideo) {
FLAG = 1;
Intent intent = new Intent();
intent.setType("video/*");
// intent.setType("audio/*");
// intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(
Intent.createChooser(intent, "Complete action using"), 1);
if (btnselectvideo.isPressed()) {
Drawable bitmap = getResources().getDrawable(R.drawable.video);
imageview.setImageDrawable(bitmap);
}
}
*/ else if (arg0 == uploadButton) {
/*Intent intent = new Intent();
intent.setType("audio/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(
Intent.createChooser(intent, "Complete action using"), 1);*/
if (FLAG == 0) {
Toast.makeText(
MainActivity.this,
"Please select atleast one image or audio or video !!!",
Toast.LENGTH_LONG).show();
} else {
if (filepath != null) {
new Thread(new Runnable() {
public void run() {
uploadFile(filepath);
}
}).start();
}
else {
Toast.makeText(MainActivity.this, "Please try again !!!",
Toast.LENGTH_LONG).show();
}
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 1 && resultCode == RESULT_OK) {
Uri selectedImageUri = data.getData();
filepath = getPath(selectedImageUri);
Bitmap bitmap = BitmapFactory.decodeFile(filepath);
imageview.setImageBitmap(bitmap);
messageText.setText("Uploading file path:" + filepath);
}
}
@SuppressWarnings("deprecation")
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
public int uploadFile(final String sourceFileUri) {
File dir = Environment.getExternalStorageDirectory();
File yourFile = new File(dir,"/Auto call record/Incomimg/+91881884011123-09-2015 01-441453941805.amr");
String fileName = yourFile.getPath();
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File sourceFile = yourFile;
if (!sourceFile.isFile()) {
Log.e("uploadFile", "Source File not exist :" + filepath);
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("Source File not exist :" + filepath);
}
});
return 0;
} else {
try {
FileInputStream fileInputStream = new FileInputStream(
sourceFile);
URL url = new URL(upLoadServerUri);
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uploaded_file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""
+ fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : "
+ serverResponseMessage + ": " + serverResponseCode);
if (serverResponseCode == 200) {
runOnUiThread(new Runnable() {
public void run() {
String msg = "File Upload Completed.\n\n See uploaded file here : \n\n"
+ " c:/wamp/www/echo/uploads";
messageText.setText(msg);
Toast.makeText(MainActivity.this,
"File Upload Complete.", Toast.LENGTH_SHORT)
.show();
}
});
}
// close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
dialog.dismiss();
ex.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
messageText
.setText("MalformedURLException Exception : check script url.");
Toast.makeText(MainActivity.this,
"MalformedURLException", Toast.LENGTH_SHORT)
.show();
}
});
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
dialog.dismiss();
e.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("Got Exception : see logcat ");
Toast.makeText(MainActivity.this,
"Got Exception : see logcat ",
Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server Exception",
"Exception : " + e.getMessage(), e);
}
dialog.dismiss();
return serverResponseCode;
}
}
}
`
答案 0 :(得分：0)
如果我按照您的问题，您可以从已定义的文件夹中检索具有.mp3扩展名的所有文件的列表。在列表上运行循环并执行您想要的操作。您可以在此处更改扩展名，例如.amr, .aac等。
File root = new File("/sdcard/MyCollection");
final String files[] = root.list(imageFilter);
FilenameFilter imageFilter = new FilenameFilter() {
File f;
public boolean accept(File dir, String name) {
if(name.endsWith(".mp3")) {
return true;
}
f = new File(dir.getAbsolutePath()+"/"+name);
return f.isDirectory();
}
};
文件将返回一个文件数组。你可以循环它。
答案 1 :(得分：0)
File dir = Environment.getExternalStorageDirectory（）; 归档yourFile = new File（dir，“/ Auto call record / OutGoing / + 91882385812528-09-2015 02-31874159794.amr”）;