How to pick image from gallery through jetpack compose in Android?

Last updated Oct 13, 2021


In this Jetpack compose tutorial we will learn how to pick image from gallery using Jetpack compose in Android application.

 

Let's get started

Step 1: Create android application in android studio

Step 2: Follow step for setup Jetpack Compose with Android Studio

 

Lets start with picking image from gallery

Add one button, on click which we are going to select an image from gallery

Column(
    modifier = Modifier.padding(16.dp), content = {
        Button(onClick = {
            //here we are going to add logic for picking image
        }, content = {
            Text(text = "Select Image From Gallery")
        })
       
    })

 

 

Pick Image from gallery Jetpack compose

 

Get the context

val context = LocalContext.current

 

 

Add a remember say imageData which will store the selected image URI

val imageData = remember { mutableStateOf(null) }

 

 

Add rememberLauncherForActivityResult which will register a request to start an activity from result which will create a record in the registry.

val launcher =
    rememberLauncherForActivityResult(ActivityResultContracts.GetContent()) {
        imageData.value = it
    }

 

 

launch the activity on button click

Button(onClick = {
    //here we are going to add logic for picking image
    launcher.launch(
        "image/*"
    )
}, content = {
    Text(text = "Select Image From Gallery")
})

 

 

Pick image from camera and gallery with jetpack compose

 

let's display the image after selecting

imageData.let {
    val bitmap = remember { mutableStateOf(null) }
    val uri = it.value
    if (uri != null) {
        if (Build.VERSION.SDK_INT < 28) {
            bitmap.value = MediaStore.Images
                .Media.getBitmap(context.contentResolver, uri)

        } else {
            val source = ImageDecoder
                .createSource(context.contentResolver, uri)
            bitmap.value = ImageDecoder.decodeBitmap(source)
        }

        bitmap.value?.let { btm ->
            Image(
                bitmap = btm.asImageBitmap(),
                contentDescription = null,
                modifier = Modifier.size(400.dp)
            )
        }
    }

}

 

Display image from Gallery with jetpack compose

Image picker jetpack compose

 

Complete example code for Pick image from gallery with Jetpack compose

package com.example.jetpack

import android.graphics.Bitmap
import android.graphics.ImageDecoder
import android.net.Uri
import android.os.Build
import android.os.Bundle
import android.provider.MediaStore
import android.view.WindowManager
import androidx.activity.ComponentActivity
import androidx.activity.compose.rememberLauncherForActivityResult
import androidx.activity.compose.setContent
import androidx.activity.result.contract.ActivityResultContracts
import androidx.compose.foundation.Image
import androidx.compose.foundation.layout.*
import androidx.compose.material.Button
import androidx.compose.material.Scaffold
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import com.example.jetpack.ui.theme.JetPackTheme

class MainActivity : ComponentActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE)
        setContent {
            PickImageFromGallery()
        }
    }
}

@Composable
fun PickImageFromGallery() {
    JetPackTheme(darkTheme = true) {
        Scaffold(content = {
            val imageData = remember { mutableStateOf(null) }
            val context = LocalContext.current
            val launcher =
                rememberLauncherForActivityResult(ActivityResultContracts.GetContent()) {
                    imageData.value = it
                }
            Column(
                modifier = Modifier.padding(16.dp), content = {
                    Button(onClick = {
                        launcher.launch(
                            "image/*"
                        )
                    }, content = {
                        Text(text = "Select Image From Gallery")
                    })
                    imageData.let {
                        val bitmap = remember { mutableStateOf(null) }
                        val uri = it.value
                        if (uri != null) {
                            if (Build.VERSION.SDK_INT < 28) {
                                bitmap.value = MediaStore.Images
                                    .Media.getBitmap(context.contentResolver, uri)

                            } else {
                                val source = ImageDecoder
                                    .createSource(context.contentResolver, uri)
                                bitmap.value = ImageDecoder.decodeBitmap(source)
                            }

                            bitmap.value?.let { btm ->
                                Image(
                                    bitmap = btm.asImageBitmap(),
                                    contentDescription = null,
                                    modifier = Modifier.size(400.dp)
                                )
                            }
                        }

                    }
                })
        })
    }
}

@Preview(showBackground = true)
@Composable
fun DefaultPreview() {
    PickImageFromGallery()
}

 

Conclusion: We have covered pick image from gallery with jetpack compose and display image into imageview.

 


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