Kotlin Capture Image From Camera Example

Kotlin Capture Image From Camera Example

Project Flow Image:

build.gradle(:app) :

plugins {
    id 'com.android.application'
    id 'org.jetbrains.kotlin.android'
}

android {
    compileSdk 32

    defaultConfig {
        applicationId "com.kotlinkatta.demo"
        minSdk 21
        targetSdk 32
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
    buildFeatures{
        dataBinding true;
        viewBinding true
    }
}

dependencies {
    implementation 'androidx.core:core-ktx:1.7.0'
    implementation 'androidx.appcompat:appcompat:1.4.1'
    implementation 'com.google.android.material:material:1.5.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}

AndroidManifest.xml :

add following code into AndroidManifest.xml file.

<provider
    android:authorities="com.kotlinkatta.demo.fileProvider"
    android:name="androidx.core.content.FileProvider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/filepaths" />
</provider>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.kotlinkatta.demo">
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.Demo">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <provider
            android:authorities="com.kotlinkatta.demo.fileProvider"
            android:name="androidx.core.content.FileProvider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/filepaths" />
        </provider>
    </application>
</manifest>

Step 1:

Create resource filepaths.xml file (res -> xml-> filepaths.xml) and add following code.

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <files-path
        name="capture_photos"
        path="." />
</paths>

Step 2:

Open activity_main.xml file and add following code.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <androidx.appcompat.widget.AppCompatButton
        android:id="@+id/btncapphoto"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:background="#FF6200EE"
        android:text="Capture Photo"
        android:textAllCaps="false"
        android:textColor="@color/white" />

    <ImageView
        android:id="@+id/imgprofileimage"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
</LinearLayout>

Step 3:

Open MainActivity.xml file and add following code.

package com.kotlinkatta.demo

import android.net.Uri
import android.os.Bundle
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.app.AppCompatActivity
import androidx.core.content.FileProvider
import com.kotlinkatta.demo.databinding.ActivityMainBinding
import java.io.File

class MainActivity : AppCompatActivity() {
    lateinit var activityMainBinding: ActivityMainBinding
    lateinit var imageUri: Uri
    val getContract = registerForActivityResult(ActivityResultContracts.TakePicture()) {
        activityMainBinding.imgprofileimage.setImageURI(null)
        activityMainBinding.imgprofileimage.setImageURI(imageUri)
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        activityMainBinding = ActivityMainBinding.inflate(layoutInflater)
        val view = activityMainBinding.root
        setContentView(view)

        imageUri = createImageUri()!!
        activityMainBinding.btncapphoto.setOnClickListener {
            getContract.launch(imageUri)
        }
    }

    private fun createImageUri(): Uri? {
        val image = File(applicationContext.filesDir, "capture_photo.png")
        return FileProvider.getUriForFile(
            applicationContext,
            "com.kotlinkatta.demo.fileProvider",
            image
        )
    }
}

Output :