Capture and Display Images in Your Android App | Android Development Tutorial (Part 10)(Hindi)
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
static final int REQUEST_IMAGE_CAPTURE = 1;
static final int REQUEST_CAMERA_PERMISSION = 100;
private ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = findViewById(R.id.imageView);
Button button = findViewById(R.id.button);
button.setOnClickListener(view -> {
if (checkCameraPermission()) {
dispatchTakePictureIntent();
} else {
requestCameraPermission();
}
});
}
private boolean checkCameraPermission() {
return ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED;
}
private void requestCameraPermission() {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, REQUEST_CAMERA_PERMISSION);
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == REQUEST_CAMERA_PERMISSION) {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
dispatchTakePictureIntent();
} else {
Toast.makeText(this, “Camera permission denied”, Toast.LENGTH_SHORT).show();
}
}
}
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
} else {
Toast.makeText(this, “No camera app found”, Toast.LENGTH_SHORT).show();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get(“data”);
imageView.setImageBitmap(imageBitmap);
}
}
}
activity_main.xml
<LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android”
android:layout_width=”match_parent”
android:layout_height=”match_parent”
android:orientation=”vertical”
android:gravity=”center”>
<ImageView
android:id=”@+id/imageView”
android:layout_width=”300dp”
android:layout_height=”300dp”
android:contentDescription=”@string/app_name” />
<Button
android:id=”@+id/button”
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:text=”Capture Image” />
</LinearLayout>
AndroidManifest.xml
<manifest xmlns:android=”http://schemas.android.com/apk/res/android”
xmlns:tools=”http://schemas.android.com/tools”>
<uses-feature
android:name=”android.hardware.camera”
android:required=”false” />
<uses-permission android:name=”android.permission.CAMERA” />
<uses-permission android:name=”android.permission.WRITE_EXTERNAL_STORAGE” />
<uses-permission android:name=”android.permission.READ_EXTERNAL_STORAGE” />
<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.Camera”
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=”${applicationId}.provider”
android:exported=”false”
android:grantUriPermissions=”true”>
<meta-data
android:name=”android.support.FILE_PROVIDER_PATHS”
android:resource=”@xml/file_paths” />
</provider>
</application>
</manifest>