Java Android意图操作\u获取\u内容不返回文件扩展名
我正在尝试获取用户选择的文件的路径,使用调用intent ACTION\u get\u CONTENT for result 问题是,当从文件管理器中选择音频文件时,意图不会返回文件的扩展名,该扩展名位于我选中的文件名中。对于视频或图像,它工作正常 代码如下: 意图呼叫:Java Android意图操作\u获取\u内容不返回文件扩展名,java,android,android-intent,Java,Android,Android Intent,我正在尝试获取用户选择的文件的路径,使用调用intent ACTION\u get\u CONTENT for result 问题是,当从文件管理器中选择音频文件时,意图不会返回文件的扩展名,该扩展名位于我选中的文件名中。对于视频或图像,它工作正常 代码如下: 意图呼叫: Intent intent = getIntent(); if(intent.getAction() == null) { if(Build.VERSION.SDK_INT >= Build.VERSION_CO
Intent intent = getIntent();
if(intent.getAction() == null) {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
else
intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("*/*");
intent.addCategory(Intent.CATEGORY_OPENABLE);
startActivityForResult(Intent.createChooser(intent, "Select a File to Upload"),CloudConstants.CLOUD_REQUEST_FILE_CHOOSER);
关于结果代码:
if (data != null) {
//Get URI Data from Intent - URI is of the file chosen by the User in the
//File picker
uriFileURI = data.getData();
if(uriFileURI != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
final int intFlags = data.getFlags()&(Intent.FLAG_GRANT_READ_URI_PERMISSION|Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
getContentResolver().takePersistableUriPermission(data.getData(), intFlags);
}
//Check if URI was returned or not; NULL is returned if file was chosen from
//via gallery share option
//In such a case, the URI is retrieved from ClipData object of the Intent
if (uriFileURI == null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN && data.getClipData().getItemCount() > 0)
uriFileURI = data.getClipData().getItemAt(0).getUri();
//Log File URI
Log.i("CloudMedia", "File Uri: " + String.valueOf(uriFileURI));
//Generate Absolute File name to publish on Title
strFileName = getFileInformation(uriFileURI, MediaStore.Files.FileColumns.DISPLAY_NAME);
getFileInformation函数:
public String getFileInformation(Uri strFileURI, String strProjection) {
Cursor cursorFileId = getContentResolver().query(strFileURI,
new String[] {
strProjection
}, null, null, null);
if(cursorFileId.moveToFirst()) {
return cursorFileId.getString(cursorFileId.getColumnIndex(strProjection));
} else
return null;
}
因此strFileName不包含所选音频文件的扩展名。
我还想要音频文件扩展名
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String imgFullPath = cursor.getString(columnIndex);
cursor.close();//String file = uri.toString();
source请尝试此代码。我使用了android.provider.OpenableColumns.DISPLAY_NAME而不是MediaStore.Files.FileColumns.DISPLAY_NAME,并将getContentResolver.query中的投影设置为null
strFileName = getFileInformation(uriFileURI, android.provider.OpenableColumns.DISPLAY_NAME);
public String getFileInformation(Uri strFileURI, String strProjection) {
Cursor cursorFileId = getContentResolver().query(strFileURI,
null, null, null, null);
if(cursorFileId.moveToFirst()) {
return cursorFileId.getString(cursorFileId.getColumnIndex(strProjection));
} else
return null;
}