小程序保存图片到手机

小程序保存图片到手机，先要获取相册授权

savePicture: function () {

var t = this;

wx.getSetting({

success: function (e) {

e.authSetting[“scope.writePhotosAlbum”] ? (wx.showLoading({

title: “图片下载中…”

}), setTimeout(function () {

wx.hideLoading();

}, 1000),

wx.downloadFile({

url: t.data.posterimg,

success: function (e) {

wx.saveImageToPhotosAlbum({

filePath: e.tempFilePath,

success: function (e) {

wx.showToast({

title: ‘保存图片成功’,

icon: ‘success’,

duration: 2000

})

},

fail: function (e) {

wx.showToast({

title: ‘保存图片失败’,

icon: ‘success’,

duration: 2000

})

}

});

}

})) :

wx.authorize({

scope: “scope.writePhotosAlbum”,

fail: function () {

wx.showModal({

title: “警告”,

content: “您点击了拒绝授权，将无法正常使用保存图片或视频的功能体验，请删除小程序重新进入。”

});

}

});

}

});

}