How to click camera programmatically in android
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:gravity="center_horizontal"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Click the below button to take photo from camera"/>
<ImageView
android:id="@+id/imageView"
android:scaleType="centerCrop"
android:layout_width="300dp"
android:layout_height="400dp"
android:src="@drawable/ic_image_black"
android:layout_marginTop="16dp"/>
<Button
android:id="@+id/btnCaptureImage"
android:text="Capture Image"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Step 3 − Add the following code to src/MainActivity.java
public class MainActivity extends AppCompatActivity {
private static final int PERMISSION_CODE = 1000;
Button mCaptureBtn;
ImageView mImageView;
Uri imageUri;
private int IMAGE_CAPTURE_CODE = 1001;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mImageView = findViewById(R.id.imageView);
mCaptureBtn = findViewById(R.id.btnCaptureImage);
mCaptureBtn.setOnClickListener(new
View.OnClickListener() {
@Override
public void onClick(View v) {
if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.M){
if (checkSelfPermission(Manifest.permission.CAMERA)==PackageManager.PERMISSION_GRANTED(Manifest.permission.CAMERA).PERMISSION_DENIED){
String[] permission = {Manifest.permission.CAMERA,Manifest.permission.WRITE_EXTERNAL_STORAGE};
requestPermissions(permission,PERMISSION_CODE);
} else{
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");
imageUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(cameraIntent, IMAGE_CAPTURE_CODE);
}
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode){
case PERMISSION_CODE:{
if (grantResults.length > 0 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
openCamera();
} else {
Toast.makeText(this, "Permissiondenied...", Toast.LENGTH_SHORT).show();
}
}
}
}
@Override
protected void onActivityResult(int requestCode, intresultCode, Intent data) {
if (resultCode == RESULT_OK){
mImageView.setImageURI(imageUri);
}
}
}
Step 4 − Add the following code to androidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.CAMERA"/>
<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>
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