Android 获取文件真实路径
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2022-06-23 09:02:42
public class GetRealPath { public static String getFPUriToPath(Context context, Uri uri) { try { List packs = context.getPackageManager().getInstalledPackages(PackageManager.GET_PROVIDERS); if (packs !...
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(".");
}
}
本文地址:https://blog.csdn.net/m0_37177456/article/details/108578781
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