50 lines
1.5 KiB
TypeScript
50 lines
1.5 KiB
TypeScript
import * as MediaLibrary from 'expo-media-library';
|
|
|
|
// 检查并请求媒体库权限
|
|
export const checkMediaLibraryPermission = async (): Promise<{ hasPermission: boolean, status?: string }> => {
|
|
try {
|
|
const { status, accessPrivileges } = await MediaLibrary.getPermissionsAsync();
|
|
|
|
// 如果已经授权，直接返回
|
|
if (status === 'granted' && accessPrivileges === 'all') {
|
|
return { hasPermission: true, status };
|
|
}
|
|
|
|
// 如果没有授权，请求权限
|
|
const { status: newStatus, accessPrivileges: newPrivileges } = await MediaLibrary.requestPermissionsAsync();
|
|
const isGranted = newStatus === 'granted' && newPrivileges === 'all';
|
|
|
|
if (!isGranted) {
|
|
console.log('Media library permission not granted or limited access');
|
|
}
|
|
|
|
return {
|
|
hasPermission: isGranted,
|
|
status: newStatus
|
|
};
|
|
} catch (error) {
|
|
return { hasPermission: false };
|
|
}
|
|
};
|
|
|
|
// 获取文件扩展名
|
|
export const getFileExtension = (filename: string) => {
|
|
return filename.split('.').pop()?.toLowerCase() || '';
|
|
};
|
|
|
|
// 获取 MIME 类型
|
|
export const getMimeType = (filename: string, isVideo: boolean) => {
|
|
if (!isVideo) return 'image/jpeg';
|
|
|
|
const ext = getFileExtension(filename);
|
|
switch (ext) {
|
|
case 'mov':
|
|
return 'video/quicktime';
|
|
case 'mp4':
|
|
return 'video/mp4';
|
|
case 'm4v':
|
|
return 'video/x-m4v';
|
|
default:
|
|
return 'video/mp4'; // 默认值
|
|
}
|
|
}; |