How to create custom camera App to take pictures in Android phone?

This video shows the steps to create custom camera Application for your android phone. It shows how you can simply have a button to invoke your camera and then take or snap the picture and store the picture as jpg image in the folder or location as desired.

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Source Code:

package com.example.mycameraapp;

import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.StrictMode;
import android.provider.MediaStore;
import android.view.View;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import java.io.File;
import java.io.IOException;

import static android.Manifest.permission.CAMERA;
import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;

public class MainActivity extends AppCompatActivity {

public static int index = 0;
public final String directory = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + “/myCamera/”;

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

ActivityCompat.requestPermissions(this,new String[]{CAMERA, WRITE_EXTERNAL_STORAGE}, PackageManager.PERMISSION_GRANTED);

StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
}

public void CameraButton(View view){

index++;
String file = directory + index + “.jpg”;
File newFile = new File(file);

try {
newFile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}

Uri outputFileUri = Uri.fromFile(newFile);
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
startActivity(cameraIntent);

}
}

<?xml version=”1.0″ encoding=”utf-8″?>
<manifest xmlns:android=”http://schemas.android.com/apk/res/android”
package=”com.example.mycameraapp”>

<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/AppTheme”>
<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>

<?xml version=”1.0″ encoding=”utf-8″?>
<RelativeLayout 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”
tools:context=”.MainActivity”>

<Button
android:id=”@+id/button”
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:layout_marginStart=”150dp”
android:layout_marginTop=”200dp”
android:onClick=”CameraButton”
android:text=”@string/camera” />
</RelativeLayout>