How to Create Camera App in Android Studio | Take Pictures with App Android Studio Tutorials

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Take Picture with Camera - Android Studio - Java

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.usmtip.myapplication">


    <!--Adding Camera, Write External Storage Permission-->
    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>



    <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.MyApplication">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

activity_main.xml

<?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"
    android:gravity="center_horizontal"
    tools:context=".MainActivity">


    <!--Image view in which image will be set-->
    <ImageView
        android:id="@+id/image_view"
        android:scaleType="centerCrop"
        android:src="@drawable/ic_baseline_image_24"
        android:layout_width="400dp"
        android:layout_height="400dp" />

    <!--Button to capture image-->
    <Button
        android:id="@+id/capture_image_btn"
        android:text="Capture Image"
        style="@style/Base.Widget.AppCompat.Button.Colored"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />




</LinearLayout>

MainActivity.java

package com.usmtip.myapplication;


import android.Manifest;
import android.content.ContentValues;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;


import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {


    private static final int PERMISSION_CODE = 1000;
    private static final int IMAGE_CAPTURE_CODE = 1001;

    Button mCaptureBtn;
    ImageView mImageView;

    Uri image_uri;




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




        mImageView = findViewById(R.id.image_view);
        mCaptureBtn = findViewById(R.id.capture_image_btn);

        //button click
        mCaptureBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //if system os is >= marshmallow, request runtime permission
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
                    if (checkSelfPermission(Manifest.permission.CAMERA) ==
                            PackageManager.PERMISSION_DENIED ||
                            checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) ==
                                    PackageManager.PERMISSION_DENIED){
                        //permission not enabled, request it
                        String[] permission = {Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE};
                        //show popup to request permissions
                        requestPermissions(permission, PERMISSION_CODE);
                    }
                    else {
                        //permission already granted
                        openCamera();
                    }
                }
                else {
                    //system os < marshmallow
                    openCamera();
                }
            }
        });
    }

    private void openCamera() {
        ContentValues values = new ContentValues();
        values.put(MediaStore.Images.Media.TITLE, "New Picture");
        values.put(MediaStore.Images.Media.DESCRIPTION, "From the Camera");
        image_uri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
        //Camera intent
        Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, image_uri);
        startActivityForResult(cameraIntent, IMAGE_CAPTURE_CODE);
    }

    //handling permission result
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        //this method is called, when user presses Allow or Deny from Permission Request Popup
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        switch (requestCode) {
            case PERMISSION_CODE: {
                if (grantResults.length > 0 && grantResults[0] ==
                        PackageManager.PERMISSION_GRANTED) {
                    //permission from popup was granted
                    openCamera();
                } else {
                    //permission from popup was denied
                    Toast.makeText(this, "Permission denied...", Toast.LENGTH_SHORT).show();
                }
            }
        }
    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        //called when image was captured from camera

        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
            //set the image captured to our ImageView
            mImageView.setImageURI(image_uri);
        }


    }
}