Java Code Examples for android.webkit.MimeTypeMap#getSingleton()

/**
 * Use the file's extension to determine if it has an audio,
 * video, or image mimetype.
 *
 * @return true if the file has an audio, image, or video mimetype
 */
private static boolean isAudioVisualMimeType(String filename) {
    MimeTypeMap mtm = MimeTypeMap.getSingleton();
    String[] filenameSegments = filename.split("\\.");
    if (filenameSegments.length > 1) {
        // use the file extension to determine the mimetype
        String ext = filenameSegments[filenameSegments.length - 1];
        String mimeType = mtm.getMimeTypeFromExtension(ext);

        return (mimeType != null) &&
                (mimeType.startsWith("audio") ||
                        mimeType.startsWith("image") ||
                        mimeType.startsWith("video"));
    }

    return false;
}
 

public static void internalInstallApk(Context context, String inAppPath){
    // install apk.
    Intent intent = new Intent(Intent.ACTION_VIEW);
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    MimeTypeMap type = MimeTypeMap.getSingleton();
    String mime = type.getMimeTypeFromExtension("apk");
    Uri apkFileUri;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        apkFileUri = BUtility.getUriForFileWithFileProvider(context, inAppPath);
    }else {
        apkFileUri = Uri.parse("file://" + inAppPath);
    }
    intent.setDataAndType(apkFileUri, mime);
    context.startActivity(intent);
}
 

private static boolean openApk(Context context, File file) {
    try {
        Uri uri;
        if (Build.VERSION.SDK_INT >= 24) {
            uri = FileProvider.getUriForFile(context, context.getPackageName() + ".provider", file);
        } else {
            uri = Uri.fromFile(file);
        }
        //create intent open file
        MimeTypeMap myMime = MimeTypeMap.getSingleton();
        Intent intent = new Intent(Intent.ACTION_VIEW);
        String ext = FileUtils.fileExt(file.getPath());
        String mimeType = myMime.getMimeTypeFromExtension(ext != null ? ext : "");
        intent.setDataAndType(uri, mimeType);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        context.startActivity(intent);
    } catch (Exception e) {
        Toast.makeText(context, e.getMessage(), Toast.LENGTH_LONG).show();
    }
    return true;
}
 

public static String getMimeType(String path) {
    String type = ALL_MIME_TYPES;
    final String extension = getExtension(path);

    // mapping extension to system mime types
    if (extension != null && !extension.isEmpty()) {
        final String extensionLowerCase = extension.toLowerCase();
        final MimeTypeMap mime = MimeTypeMap.getSingleton();
        type = mime.getMimeTypeFromExtension(extensionLowerCase);
        if (type == null) {
            type = MIME_TYPES.get(extensionLowerCase);
        }
    }
    if (type == null) type = ALL_MIME_TYPES;
    return type;
}
 

/**
 * Get Mime Type of a file
 * @param file the file of which mime type to get
 * @return Mime type in form of String
 */
public static String getMimeType(File file) {
    if (file.isDirectory()) {
        return null;
    }

    String type = ALL_MIME_TYPES;
    final String extension = getExtension(file.getName());

    // mapping extension to system mime types
    if (extension != null && !extension.isEmpty()) {
        final String extensionLowerCase = extension.toLowerCase();
        final MimeTypeMap mime = MimeTypeMap.getSingleton();
        type = mime.getMimeTypeFromExtension(extensionLowerCase);
        if (type == null) {
            type = MIME_TYPES.get(extensionLowerCase);
        }
    }
    if (type == null) type = ALL_MIME_TYPES;
    return type;
}
 

private void viewFileInExternalApp(File result) {
    Intent intent = new Intent(Intent.ACTION_VIEW);
    MimeTypeMap mime = MimeTypeMap.getSingleton();
    String ext = result.getName().substring(result.getName().indexOf(".") + 1);
    String type = mime.getMimeTypeFromExtension(ext);

    intent.setDataAndType(Uri.fromFile(result), type);

    // Check for a handler first to avoid a crash
    PackageManager manager = getPackageManager();
    List<ResolveInfo> resolveInfo = manager.queryIntentActivities(intent, 0);
    if (resolveInfo.size() > 0) {
        startActivity(intent);
    }
}
 

File[] listFiles(@Nullable String mimeType, @Nullable String[] extensions) {
  File[] contents = parentFolder.listFiles();
  List<File> results = new ArrayList<>();
  if (contents != null) {
    MimeTypeMap mimeTypeMap = MimeTypeMap.getSingleton();
    for (File fi : contents) {
      if (fi.isDirectory()) {
        results.add(fi);
      } else {
        if (extensions != null) {
          boolean found = false;
          for (String ext : extensions) {
            if (fi.getName().toLowerCase().endsWith(ext.toLowerCase())) {
              found = true;
              break;
            }
          }
          if (found) {
            results.add(fi);
          }
        } else if (mimeType != null) {
          if (fileIsMimeType(fi, mimeType, mimeTypeMap)) {
            results.add(fi);
          }
        }
      }
    }
    Collections.sort(results, new FileSorter());
    return results.toArray(new File[results.size()]);
  }
  return null;
}
 

static void shareFile(Activity activity, String url) {
    try {
        File myFile = new File(url);
        MimeTypeMap mime = MimeTypeMap.getSingleton();
        String ext = myFile.getName().substring(myFile.getName().lastIndexOf(".") + 1);
        String type = mime.getMimeTypeFromExtension(ext);
        Intent sharingIntent = new Intent("android.intent.action.SEND");
        sharingIntent.setType(type);
        sharingIntent.putExtra("android.intent.extra.STREAM", Uri.fromFile(myFile));
        activity.startActivity(Intent.createChooser(sharingIntent, activity.getString(R.string.shareWith)));
    } catch (Exception e) {
        e.printStackTrace();
    }
}
 

/**
 * Gets the intent to share a single IndexedFile with
 *
 * @param with the file to share
 * @return share intent
 */
private Intent getShareIntentSingle(IndexedFile with) {

	Intent intent = new Intent();
	intent.setAction(Intent.ACTION_SEND);

	MimeTypeMap map = MimeTypeMap.getSingleton();
	String mimeType = map.getMimeTypeFromExtension(with.getExtension().substring(1));
	intent.setType(mimeType);

	Uri uri = Uri.fromFile(with.getUnlockedFile());
	intent.putExtra(Intent.EXTRA_STREAM, uri);

	return intent;
}
 

private static String getMimeType(String url) {
    String type = null;
    String extension = MimeTypeMap.getFileExtensionFromUrl(url);
    if (extension != null) {
        MimeTypeMap mime = MimeTypeMap.getSingleton();
        type = mime.getMimeTypeFromExtension(extension);
    }
    return type;
}
 

public static FileType getMimeType(Uri uri) {
    String extension;
    FileType fileType = FileType.file;

    //Check uri format to avoid null
    if (uri.getScheme().equals(ContentResolver.SCHEME_CONTENT)) {
        //If scheme is a content
        final MimeTypeMap mime = MimeTypeMap.getSingleton();
        extension = mime.getExtensionFromMimeType(G.context.getContentResolver().getType(uri));
    } else {
        //If scheme is a File
        //This will replace white spaces with %20 and also other special characters. This will avoid returning null values on file name with spaces and special characters.
        extension = MimeTypeMap.getFileExtensionFromUrl(Uri.fromFile(new File(uri.getPath())).toString());
    }

    if (extension == null) {
        return null;
    }
    extension = extension.toLowerCase();

    if (extension.endsWith("jpg") || extension.endsWith("jpeg") || extension.endsWith("png") || extension.endsWith("bmp") || extension.endsWith(".tiff")) {
        fileType = FileType.image;
    } else if (extension.endsWith("mp3") || extension.endsWith("ogg") || extension.endsWith("wma") || extension.endsWith("m4a") || extension.endsWith("amr") || extension.endsWith("wav") || extension.endsWith(".mid") || extension.endsWith(".midi")) {
        fileType = FileType.audio;
    } else if (extension.endsWith("mp4") || extension.endsWith("3gp") || extension.endsWith("avi") || extension.endsWith("mpg") || extension.endsWith("flv") || extension.endsWith("wmv") || extension.endsWith("m4v") || extension.endsWith(".mpeg")) {
        fileType = FileType.video;
    }

    return fileType;
}
 

/**
 * 获取文件的MIME类型
 */
public static String getMimeType(String pathOrUrl) {
    String ext = getExtension(pathOrUrl);
    MimeTypeMap map = MimeTypeMap.getSingleton();
    String mimeType;
    if (map.hasExtension(ext)) {
        mimeType = map.getMimeTypeFromExtension(ext);
    } else {
        mimeType = "*/*";
    }
    LogUtils.verbose(pathOrUrl + ": " + mimeType);
    return mimeType;
}
 

public static String getMimeType(String url) {
    String type = null;
    String extension = MimeTypeMap.getFileExtensionFromUrl(url);

    if (TextUtils.isEmpty(extension) && url.contains(".")) {
        extension = url.substring(url.lastIndexOf('.') + 1).toLowerCase();
    }

    if (!TextUtils.isEmpty(extension)) {
        MimeTypeMap mime = MimeTypeMap.getSingleton();
        type = mime.getMimeTypeFromExtension(extension.toLowerCase());
    }

    return type;
}
 

public static String generateVideoPlayback(File myFile) {
    MimeTypeMap myMime = MimeTypeMap.getSingleton();
    Intent newIntent = new Intent(Intent.ACTION_VIEW);
    String mimeType = myMime.getMimeTypeFromExtension(fileExt(myFile.getAbsolutePath()).substring(1));
    newIntent.setDataAndType(Uri.fromFile(myFile),mimeType);
    newIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    return newIntent.toUri(Intent.URI_INTENT_SCHEME);
}
 

@Override
public String getType(Uri arg0) {
    String type = null;
    String extension = MimeTypeMap.getFileExtensionFromUrl(arg0.toString());
    if (extension != null) {
        MimeTypeMap mime = MimeTypeMap.getSingleton();
        type = mime.getMimeTypeFromExtension(extension);
    }

    return type;
}
 

static String getSupposablyMime(String url) {
    MimeTypeMap mimes = MimeTypeMap.getSingleton();
    String extension = MimeTypeMap.getFileExtensionFromUrl(url);
    return TextUtils.isEmpty(extension) ? null : mimes.getMimeTypeFromExtension(extension);
}
 

static String getSupposablyMime(String url) {
    MimeTypeMap mimes = MimeTypeMap.getSingleton();
    String extension = MimeTypeMap.getFileExtensionFromUrl(url);
    return TextUtils.isEmpty(extension) ? null : mimes.getMimeTypeFromExtension(extension);
}
 

@Override
public boolean onCreate() {
	mimeTypeMap = MimeTypeMap.getSingleton();
	return true;
}
 

private String getMimeType(Uri uri) {
    ContentResolver cR = getApplicationContext().getContentResolver();
    MimeTypeMap mime = MimeTypeMap.getSingleton();
    return mime.getExtensionFromMimeType(cR.getType(uri));
}
 

public static void openForView(TLObject media, Activity activity) {
    if (media == null || activity == null) {
        return;
    }
    String fileName = FileLoader.getAttachFileName(media);
    File f = FileLoader.getPathToAttach(media, true);
    if (f != null && f.exists()) {
        String realMimeType = null;
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        MimeTypeMap myMime = MimeTypeMap.getSingleton();
        int idx = fileName.lastIndexOf('.');
        if (idx != -1) {
            String ext = fileName.substring(idx + 1);
            realMimeType = myMime.getMimeTypeFromExtension(ext.toLowerCase());
            if (realMimeType == null) {
                if (media instanceof TLRPC.TL_document) {
                    realMimeType = ((TLRPC.TL_document) media).mime_type;
                }
                if (realMimeType == null || realMimeType.length() == 0) {
                    realMimeType = null;
                }
            }
        }
        if (Build.VERSION.SDK_INT >= 24) {
            intent.setDataAndType(FileProvider.getUriForFile(activity, BuildConfig.APPLICATION_ID + ".provider", f), realMimeType != null ? realMimeType : "text/plain");
        } else {
            intent.setDataAndType(Uri.fromFile(f), realMimeType != null ? realMimeType : "text/plain");
        }
        if (realMimeType != null) {
            try {
                activity.startActivityForResult(intent, 500);
            } catch (Exception e) {
                if (Build.VERSION.SDK_INT >= 24) {
                    intent.setDataAndType(FileProvider.getUriForFile(activity, BuildConfig.APPLICATION_ID + ".provider", f), "text/plain");
                } else {
                    intent.setDataAndType(Uri.fromFile(f), "text/plain");
                }
                activity.startActivityForResult(intent, 500);
            }
        } else {
            activity.startActivityForResult(intent, 500);
        }
    }
}