how can I download image on firebase storage?

Question

I want to download image on firebase storage in android app.

this is my image

I try this but it is not working

storageR         


        

Answer 1

package com.example.package.myfirestore;

import android.app.ProgressDialog;
import android.content.ContentResolver;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.webkit.MimeTypeMap;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.OnProgressListener;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;

import java.io.IOException;
import java.net.URI;

/**
 * Created by Yeshveer on 6/9/2018.
 */

public class UploadImg extends AppCompatActivity{
    private TextView textView1;
    private ImageView img1;
    private EditText edittext1;
    private Button Btn1;
    private Button Btn2;
    int Image_requestcode=7;
    ProgressDialog pd;
    Uri filpath;
    FirebaseStorage storage1;
    StorageReference storageReference;
    StorageReference storageReference2;
    FirebaseFirestore db;

  FirebaseStorage storage;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        textView1 = (TextView) findViewById(R.id.textView1);
        img1 = (ImageView) findViewById(R.id.img1);
        edittext1 = (EditText) findViewById(R.id.edittext1);
        Btn1 = (Button) findViewById(R.id.Btn1);
        Btn2 = (Button) findViewById(R.id.Btn2);

        // Create Storage Referece
        storage1=FirebaseStorage.getInstance();
        storageReference = storage1.getReference();

        //PD details
        pd=new ProgressDialog(this);
        pd.setTitle("Uploading Image");



// Image Chooser
        Btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // Creating Intent
                Intent intent = new Intent();

                //Setting Intent of Image type and select Image from Mobile Storage
                intent.setType("image/*");
                intent.setAction(Intent.ACTION_GET_CONTENT);
                startActivityForResult(Intent.createChooser(intent, "Please Select Image"), Image_requestcode);
            }
        });

        Btn2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                UploadingStart();
            }
        });
    }

    private void UploadingStart() {
        // Image path Print

        textView1.setText(GetFileExtension(filpath));
        pd.show();
        storageReference2=storageReference.child("images/"+"hello"+"."+GetFileExtension(filpath));
        storageReference2.putFile(filpath)
                .addOnSuccessListener(new OnSuccessListener() {
                    @Override
                    public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                        pd.dismiss();
                        Toast.makeText(UploadImg.this, "Uploaded Successfully", Toast.LENGTH_SHORT).show();
                    }
                })
                .addOnFailureListener(new OnFailureListener() {
                    @Override
                    public void onFailure(@NonNull Exception e) {
                        pd.dismiss();
                        Toast.makeText(UploadImg.this, "Error in Uploading, Please check Internet connection", Toast.LENGTH_SHORT).show();
                    }
                })
                .addOnProgressListener(new OnProgressListener() {
                    @Override
                    public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
                        double progress=(100.0* taskSnapshot.getBytesTransferred()/taskSnapshot.getTotalByteCount());
                        pd.setMessage("Progress is "+(int)progress+"%");
                    }
                });



    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if(requestCode==Image_requestcode && resultCode==RESULT_OK && data != null && data.getData() != null){
            filpath=data.getData();

            try {
                // Image content resolver
                Bitmap bitmap= MediaStore.Images.Media.getBitmap(getContentResolver(),filpath);
                img1.setImageBitmap(bitmap);


            } catch (IOException e) {
                e.printStackTrace();
            }


        }
    }



    // Method for file etention and path
    public String GetFileExtension(Uri uri){
        ContentResolver contentResolver=getContentResolver();
        MimeTypeMap mimeTypeMap=MimeTypeMap.getSingleton();

        // Return file Extension
        return mimeTypeMap.getExtensionFromMimeType(contentResolver.getType(uri));

    }

}