Android 获取文件真实路径

public class GetRealPath {
    public static String getFPUriToPath(Context context, Uri uri) {
        try {
            List<PackageInfo> packs = context.getPackageManager().getInstalledPackages(PackageManager.GET_PROVIDERS);
            if (packs != null) {
                String fileProviderClassName = FileProvider.class.getName();
                for (PackageInfo pack : packs) {
                    ProviderInfo[] providers = pack.providers;
                    if (providers != null) {
                        for (ProviderInfo provider : providers) {
                            if (uri.getAuthority().equals(provider.authority)) {
                                if (provider.name.equalsIgnoreCase(fileProviderClassName)) {
                                    Class<FileProvider> fileProviderClass = FileProvider.class;
                                    try {
                                        Method getPathStrategy = fileProviderClass.getDeclaredMethod("getPathStrategy", Context.class, String.class);
                                        getPathStrategy.setAccessible(true);
                                        Object invoke = getPathStrategy.invoke(null, context, uri.getAuthority());
                                        if (invoke != null) {
                                            String PathStrategyStringClass = FileProvider.class.getName() + "$PathStrategy";
                                            Class<?> PathStrategy = Class.forName(PathStrategyStringClass);
                                            Method getFileForUri = PathStrategy.getDeclaredMethod("getFileForUri", Uri.class);
                                            getFileForUri.setAccessible(true);
                                            Object invoke1 = getFileForUri.invoke(invoke, uri);
                                            if (invoke1 instanceof File) {
                                                String filePath = ((File) invoke1).getAbsolutePath();
                                                return replace(filePath);
                                            }
                                        }
                                    } catch (NoSuchMethodException e) {
                                        e.printStackTrace();
                                    } catch (InvocationTargetException e) {
                                        e.printStackTrace();
                                    } catch (IllegalAccessException e) {
                                        e.printStackTrace();
                                    } catch (ClassNotFoundException e) {
                                        e.printStackTrace();
                                    }
                                    break;
                                }
                                break;
                            }
                        }
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;

    }

    public static String replace(String filePath) {
        if (filePath.contains("%")) {
            filePath = filePath.replace("%", "%25");
        }
        if (filePath.contains("#")) {
            filePath = filePath.replace("#", "%23");
        }
        if (filePath.contains("&")) {
            filePath = filePath.replace("&", "%26");
        }
        if (filePath.contains("?")) {
            filePath = filePath.replace("?", "%3F");
        }
        return filePath;
    }

    /**
     * 查询内容解析器，找到文件存储地址
     * <p>ef: android中转换content://media/external/images/media/539163为/storage/emulated/0/DCIM/Camera/IMG_20160807_123123.jpg
     * <p>把content://media/external/images/media/X转换为file:///storage/sdcard0/Pictures/X.jpg
     * @param context
     * @param contentUri
     * @return
     */
    public static String getRealPathFromUri(Context context, Uri contentUri) {
        Cursor cursor = null;
        try {
            String[] proj = { MediaStore.Images.Media.DATA };
            cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
            if (cursor != null && cursor.getColumnCount() > 0) {
                cursor.moveToFirst();
                int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                String path = cursor.getString(column_index);
                return path;
            } else {
            }
        } catch (Exception e) {
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
        return "";
    }

    /**
     * 获取完整文件名(包含扩展名)
     * @param filePath
     * @return
     */
    public static String getFilenameWithExtension(String filePath) {
        if (filePath == null || filePath.length() == 0) {
            return "";
        }
        int lastIndex = filePath.lastIndexOf(File.separator);
        String filename = filePath.substring(lastIndex + 1);
        return filename;
    }

    /**
     * 判断文件路径的文件名是否存在文件扩展名 eg: /external/images/media/2283
     * @param filePath
     * @return
     */
    public static boolean isFilePathWithExtension(String filePath) {
        String filename = getFilenameWithExtension(filePath);
        return filename.contains(".");
    }
}

获取真实路径工具类下载

本文地址：https://blog.csdn.net/m0_37177456/article/details/108578781