如何在 ionic 中检查和请求存储权限

Question

我搜索了检查/请求权限，发现了 2 个插件：

第一：安卓权限

https://ionicframework.com/docs/native/android-permissions/

第二：诊断

https://ionicframework.com/docs/native/diagnostic/

我检查了第二个，但当我写EXTERNAL_STORAGE时它显示错误。然后我检查了第一个，但它不起作用.这是我的代码：

this.androidPermissions.checkPermission(this.androidPermissions.PERMISSION.WRITE_EXTERNAL_STORAGE).then( (result) => {
            //console.log('Has permission?',result.hasPermission)
    },err => {
            this.androidPermissions.requestPermission(this.androidPermissions.PERMISSION.WRITE_EXTERNAL_STORAGE).then(_=>{
        targetPath = cordova.file.externalRootDirectory+ "download/"+moment().format("YYYYMMDDHHmmsss")+".jpg";
        fileTransfer.download(image.img, targetPath, true).then((entry) => {
            alert('download complete: ' + entry.toURL());
        }, (error) => {
            alert("please check application permissions");
        });
    });
});

那么哪个插件在离子中工作以及如何工作？

Answer 1

通过使用

第一个插件解决了问题，这样：

download(image) {
    const fileTransfer: FileTransferObject = this.transfer.create();
let targetPath = cordova.file.externalRootDirectory+ "download/"+moment().format("YYYYMMDDHHmmsss")+".jpg";
fileTransfer.download(image.img, targetPath, true).then((entry) => {
  alert('download complete: ' + entry.toURL());
}, (error) => {
        this.checkPermissions();
    });
}
checkPermissions(){
    this.androidPermissions.requestPermissions(
        [
            this.androidPermissions.PERMISSION.READ_EXTERNAL_STORAGE, 
            this.androidPermissions.PERMISSION.WRITE_EXTERNAL_STORAGE
        ]
    );
}