const savePosterPath = (url) => {
uni.showLoading({
title: '正在保存图片...'
});
//获取用户的当前设置。获取相册权限
uni.getSetting({
success: (res) => {
//如果没有相册权限
if (!res.authSetting["scope.writePhotosAlbum"]) {
//向用户发起授权请求
uni.authorize({
scope: "scope.writePhotosAlbum",
success: () => {
//授权成功保存图片到系统相册
uni.saveImageToPhotosAlbum({
//图片路径，不支持网络图片路径
filePath: url,
success: (res) => {
uni.hideLoading();
return uni.showToast({
title: "保存成功！",
});
},
fail: (res) => {
console.log(res.errMsg);
return uni.showToast({
title: res.errMsg,
});
},
complete: (res) => {uni.hideLoading();},
});
},
//授权失败
fail: () => {
uni.hideLoading();
uni.showModal({
title: "您已拒绝获取相册权限",
content: "是否进入权限管理，调整授权？",
success: (res) => {
if (res.confirm) {
//调起客户端小程序设置界面，返回用户设置的操作结果。（重新让用户授权）
uni.openSetting({
success: (res) => {
console.log(res.authSetting);
},
});
} else if (res.cancel) {
return uni.showToast({
title: "已取消！",
});
}
},
});
},
});
} else {
//如果已有相册权限，直接保存图片到系统相册
uni.saveImageToPhotosAlbum({
filePath: url,
success: (res) => {
uni.hideLoading();
return uni.showToast({
title: "保存成功！",
});
},
fail: (res) => {
uni.hideLoading();
console.log(res.errMsg);
return uni.showToast({
title: res.errMsg,
});
},
//无论成功失败都走的回调
complete: (res) => {uni.hideLoading();},
});
}
},
fail: (res) => {},
});
};
用到的方法
1. uni.getSetting
uniapp官网链接： https://uniapp.dcloud.io/api/other/setting.html#getsetting
2. uni.authorize
链接：https://uniapp.dcloud.io/api/other/authorize.html#authorize
3. uni.saveImageToPhotosAlbum
链接： https://uniapp.dcloud.io/api/media/image.html#saveimagetophotosalbum
4. uni.openSetting
链接： https://uniapp.dcloud.io/api/other/setting.html#opensetting
