41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
import * as MediaLibrary from "expo-media-library";
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import * as FileSystem from "expo-file-system";
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import Toast from "react-native-toast-message";
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import * as ImageManipulator from "expo-image-manipulator";
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export default async function saveImage(uri) {
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const permission = await MediaLibrary.requestPermissionsAsync();
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if (permission.granted) {
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const timestamp = new Date().getTime();
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const fileUri = FileSystem.cacheDirectory + `${timestamp}.png`;
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try {
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const manipResult = await ImageManipulator.manipulateAsync(uri, [], {
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base64: true,
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});
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const base64Code = manipResult.base64;
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await FileSystem.writeAsStringAsync(fileUri, base64Code, {
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encoding: FileSystem.EncodingType.Base64,
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});
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await MediaLibrary.saveToLibraryAsync(fileUri);
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Toast.show({
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type: "success",
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text1: "已保存到相册",
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topOffset: 60,
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});
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return true;
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} catch (err) {
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console.error("FS Err: ", err);
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return false;
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}
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} else {
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Toast.show({
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type: "error",
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text1: "保存失败，请检查APP媒体权限",
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topOffset: 60,
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});
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return false;
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}
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}
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