Merge pull request aadityamp01#94 from jmanan088/picture-clicking-app

Added Picture Clicking Application

Picture Clicking App/Picture Clicking App/.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

Picture Clicking App/Picture Clicking App/app/.gitignore

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+/build

Picture Clicking App/Picture Clicking App/app/build.gradle

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+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdk 32
+
+    defaultConfig {
+        applicationId "com.example.picclick"
+        minSdk 23
+        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
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.5.1'
+    implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    implementation 'com.google.android.material:material:1.7.0-alpha03'
+}

Picture Clicking App/Picture Clicking App/app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

Picture Clicking App/Picture Clicking App/app/src/androidTest/java/com/example/picclick/ExampleInstrumentedTest.java

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+package com.example.picclick;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.picclick", appContext.getPackageName());
+    }
+}

Picture Clicking App/Picture Clicking App/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.example.picclick">
+
+    <!--Permissions to use storage and camera-->
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.CAMERA"/>
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.PicClick"
+        tools:targetApi="31">
+        <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:name="androidx.core.content.FileProvider"
+            android:authorities="com.example.android.PicClick_https://github.com/jmanan088"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
+    </application>
+
+</manifest>

Picture Clicking App/Picture Clicking App/app/src/main/java/com/example/picclick/MainActivity.java

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+package com.example.picclick;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+import androidx.core.content.FileProvider;
+
+import android.Manifest;
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.graphics.Bitmap;
+import android.graphics.drawable.BitmapDrawable;
+import android.icu.text.SimpleDateFormat;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Environment;
+import android.provider.MediaStore;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ImageView;
+import android.widget.Toast;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.IOException;
+import java.util.Date;
+import java.util.Locale;
+
+public class MainActivity extends AppCompatActivity {
+
+    public static final int Camera_request = 101;
+    public static final int Open_cam_req = 102;
+    String currentPhotoPath;
+    Button click, download;
+    ImageView img;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        click = findViewById(R.id.click);
+        download = findViewById(R.id.download);
+        img = findViewById(R.id.img);
+        // Disable state for downloading image before clicking photo, to prevent
+        download.setEnabled(false);
+        download.setVisibility(View.INVISIBLE);
+        click.setOnClickListener(new View.OnClickListener() {
+            // checking for minimum version required, N = Nougat
+            @RequiresApi(api = Build.VERSION_CODES.N)
+            @Override
+            public void onClick(View view) {
+                //Asking camera permissions
+                //Manifest.permission.CAMERA gets us the current situation for permissions and we match that with PackageManager.PERMISSION_GRANTED, which know is code for granted permission
+                if(ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CAMERA)!= PackageManager.PERMISSION_GRANTED) {
+                    // We request permissions when our permission was not already granted. we are requesting permission within MainActivity as context, and every request needs i's own unique code, which here is Camera_request
+                    ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.CAMERA}, Camera_request);
+                }
+                else{
+                    //if permission are given then call picture taking function
+                    dispatchTakePictureIntent();
+                }
+            }
+        });
+        download.setOnClickListener(new View.OnClickListener() {
+            @RequiresApi(api = Build.VERSION_CODES.N)
+            @Override
+            public void onClick(View view) {
+                getImageUri(MainActivity.this,((BitmapDrawable)img.getDrawable()).getBitmap());
+                Toast.makeText(MainActivity.this, "Image Downloaded.", Toast.LENGTH_SHORT).show();
+            }
+        });
+    }
+
+    // Handles the results for our permission requests
+    @RequiresApi(api = Build.VERSION_CODES.N)
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+        if(requestCode == Camera_request){
+            // requestCode== camera_request means we are camera permissions
+            if(grantResults.length > 0 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
+                // If permission was granted then we start our camera taking function
+                dispatchTakePictureIntent();
+            }
+            else{
+                //permission not given
+                Toast.makeText(this, "Camera permission required to use camera.", Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+
+    //gets our result back from camera app and set that file we got to image view.
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if(requestCode==Open_cam_req){
+            if(resultCode == Activity.RESULT_OK){
+                File f = new File(currentPhotoPath);
+                img.setImageURI(Uri.fromFile(f));
+                // set the visibility and clickable button to true after  user has clicked the image to that he can download the image
+                download.setVisibility(View.VISIBLE);
+                download.setEnabled(true);
+            }
+        }
+    }
+
+
+    @RequiresApi(api = Build.VERSION_CODES.N)
+    private File createImageFile() throws IOException {
+        // Create an image file name
+        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.FRENCH).format(new Date());
+        String imageFileName = "JPEG_" + timeStamp + "_";
+        File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
+        File image = File.createTempFile(
+                imageFileName,  /* prefix */
+                ".jpg",         /* suffix */
+                storageDir      /* directory */
+        );
+
+        // Save a file: path for use with ACTION_VIEW intents
+        currentPhotoPath = image.getAbsolutePath();
+        return image;
+    }
+
+
+    @RequiresApi(api = Build.VERSION_CODES.N)
+    private void dispatchTakePictureIntent() {
+        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
+        // Ensure that there's a camera activity to handle the intent
+        if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
+            // Create the File where the photo should go
+            File photoFile = null;
+            try {
+                photoFile = createImageFile();
+            } catch (IOException ex) {
+                // Error occurred while creating the File
+            }
+            // Continue only if the File was successfully created
+            if (photoFile != null) {
+                //authority i.e. provider name could be anything
+                Uri photoURI = FileProvider.getUriForFile(this,
+                        "com.example.android.PicClick_https://github.com/jmanan088",
+                        photoFile);
+                takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
+                startActivityForResult(takePictureIntent, Open_cam_req);
+            }
+        }
+    }
+
+    //Function to save image to external storage
+    @RequiresApi(api = Build.VERSION_CODES.N)
+    public void getImageUri(Context inContext, Bitmap inImage) {
+        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
+        inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
+        //Storing the photo with date-time format as name
+        String timeStamp = new SimpleDateFormat("dd_MM_yyyy-HH.mm.ss", Locale.FRENCH).format(new Date());
+        String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, timeStamp, null);
+    }
+}