如何使用改进从缓存镜像发出MultipartBbody.Part请求
如何使用改进从缓存镜像发出MultipartBbody.Part请求
提问于 2018-07-30 02:19:46
我的图像缓存在以下位置：
file:///data/user/0/com.example.muhammadusman.project/cache/cropped1340954678061130725.jpg如何发出此接口的Multipart.body请求：
@Multipart
@POST("/image/{name}")
Call<Recognition> recognizeImage(
@Path("name")String name,
@Part MultipartBody.Part image);函数的输入
key="40"
imageName="cropped1340954678061130725.jpg"
path="file:///data/user/0/com.example.muhammadusman.project/cache/cropped1340954678061130725.jpg"这是我的代码：我正在使用这段代码来创建MultipartBody.Part对象。但是我不能制作这个物体。程序总是崩溃。
public static MultipartBody.Part creatPartFromPath(String key,String imageName,String path){
File file=new File(path);
String mediaType= getMimeType(path);
RequestBody intermediateFile=RequestBody.create(MediaType.parse(mediaType),file);
return MultipartBody.Part.createFormData(key,imageName,intermediateFile);
}
public static String getMimeType(String url) {
return url.substring(url.lastIndexOf(".") + 1);
}回答 1
Stack Overflow用户
回答已采纳
发布于 2018-07-30 03:27:03
Github源代码链接： https://github.com/iPaulPro/aFileChooser/blob/master/aFileChooser/src/com/ipaulpro/afilechooser/utils/FileUtils.java
使用以下代码：
我测试了这段代码，它工作得很好。该链接包含完整的源代码。但是我为你定制了这个文件，这对你来说很好。
问题解决方案：
String path=FileUtils1.getPath(getContext(),titleImageUri);现在，您的路径将是
path="/data/user/0/com.example.muhammadusman.project/cache/cropped8174258068738559892.jpg"用这个新路径替换您以前的路径。
public class FileUtils1 {
private FileUtils1() {} //private constructor to enforce Singleton pattern
/** TAG for log messages. */
static final String TAG = "FileUtils";
private static final boolean DEBUG = false; // Set to true to enable logging
public static final String MIME_TYPE_AUDIO = "audio/*";
public static final String MIME_TYPE_TEXT = "text/*";
public static final String MIME_TYPE_IMAGE = "image/*";
public static final String MIME_TYPE_VIDEO = "video/*";
public static final String MIME_TYPE_APP = "application/*";
public static final String HIDDEN_PREFIX = ".";
public static File getFile(Context context, Uri uri) {
if (uri != null) {
String path = getPath(context, uri);
if (path != null && isLocal(path)) {
return new File(path);
}
}
return null;
}
public static boolean isLocal(String url) {
if (url != null && !url.startsWith("http://") && !url.startsWith("https://")) {
return true;
}
return false;
}
public static String getPath(final Context context, final Uri uri) {
if (DEBUG)
Log.d(TAG + " File -",
"Authority: " + uri.getAuthority() +
", Fragment: " + uri.getFragment() +
", Port: " + uri.getPort() +
", Query: " + uri.getQuery() +
", Scheme: " + uri.getScheme() +
", Host: " + uri.getHost() +
", Segments: " + uri.getPathSegments().toString()
);
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// LocalStorageProvider
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
// TODO handle non-primary volumes
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[] {
split[1]
};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
public static String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {
column
};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null);
if (cursor != null && cursor.moveToFirst()) {
if (DEBUG)
DatabaseUtils.dumpCursor(cursor);
final int column_index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(column_index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51583239
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