Java tutorial
package com.spectralinsights.locar; import java.io.File; import java.io.FileOutputStream; import android.Manifest; import android.content.Intent; import android.content.pm.PackageManager; import android.graphics.Bitmap; import android.hardware.SensorManager; import android.location.LocationListener; import android.net.Uri; import android.os.Environment; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.widget.Toast; import com.wikitude.architect.ArchitectView; import com.wikitude.architect.ArchitectView.ArchitectUrlListener; import com.wikitude.architect.ArchitectView.CaptureScreenCallback; import com.wikitude.architect.ArchitectView.SensorAccuracyChangeListener; import com.wikitude.architect.StartupConfiguration.CameraPosition; import com.spectralinsights.locar.R; public class SampleCamActivity extends AbstractArchitectCamActivity { /** * last time the calibration toast was shown, this avoids too many toast shown when compass needs calibration */ private long lastCalibrationToastShownTimeMillis = System.currentTimeMillis(); protected Bitmap screenCapture = null; private static final int WIKITUDE_PERMISSIONS_REQUEST_EXTERNAL_STORAGE = 3; @Override public String getARchitectWorldPath() { return getIntent().getExtras().getString(MainSamplesListActivity.EXTRAS_KEY_ACTIVITY_ARCHITECT_WORLD_URL); } @Override public String getActivityTitle() { return (getIntent().getExtras() != null && getIntent().getExtras().get(MainSamplesListActivity.EXTRAS_KEY_ACTIVITY_TITLE_STRING) != null) ? getIntent().getExtras() .getString(MainSamplesListActivity.EXTRAS_KEY_ACTIVITY_TITLE_STRING) : "Test-World"; } @Override public int getContentViewId() { return R.layout.sample_cam; } @Override public int getArchitectViewId() { return R.id.architectView; } @Override public String getWikitudeSDKLicenseKey() { return WikitudeSDKConstants.WIKITUDE_SDK_KEY; } @Override public SensorAccuracyChangeListener getSensorAccuracyListener() { return new SensorAccuracyChangeListener() { @Override public void onCompassAccuracyChanged(int accuracy) { /* UNRELIABLE = 0, LOW = 1, MEDIUM = 2, HIGH = 3 */ if (accuracy < SensorManager.SENSOR_STATUS_ACCURACY_MEDIUM && SampleCamActivity.this != null && !SampleCamActivity.this.isFinishing() && System.currentTimeMillis() - SampleCamActivity.this.lastCalibrationToastShownTimeMillis > 5 * 1000) { Toast.makeText(SampleCamActivity.this, R.string.compass_accuracy_low, Toast.LENGTH_LONG).show(); SampleCamActivity.this.lastCalibrationToastShownTimeMillis = System.currentTimeMillis(); } } }; } @Override public ArchitectUrlListener getUrlListener() { return new ArchitectUrlListener() { @Override public boolean urlWasInvoked(String uriString) { Uri invokedUri = Uri.parse(uriString); // pressed "More" button on POI-detail panel if ("markerselected".equalsIgnoreCase(invokedUri.getHost())) { final Intent poiDetailIntent = new Intent(SampleCamActivity.this, SamplePoiDetailActivity.class); poiDetailIntent.putExtra(SamplePoiDetailActivity.EXTRAS_KEY_POI_ID, String.valueOf(invokedUri.getQueryParameter("id"))); poiDetailIntent.putExtra(SamplePoiDetailActivity.EXTRAS_KEY_POI_TITILE, String.valueOf(invokedUri.getQueryParameter("title"))); poiDetailIntent.putExtra(SamplePoiDetailActivity.EXTRAS_KEY_POI_DESCR, String.valueOf(invokedUri.getQueryParameter("description"))); SampleCamActivity.this.startActivity(poiDetailIntent); return true; } // pressed snapshot button. check if host is button to fetch e.g. 'architectsdk://button?action=captureScreen', you may add more checks if more buttons are used inside AR scene else if ("button".equalsIgnoreCase(invokedUri.getHost())) { SampleCamActivity.this.architectView.captureScreen( ArchitectView.CaptureScreenCallback.CAPTURE_MODE_CAM_AND_WEBVIEW, new CaptureScreenCallback() { @Override public void onScreenCaptured(final Bitmap screenCapture) { if (ContextCompat.checkSelfPermission(SampleCamActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { SampleCamActivity.this.screenCapture = screenCapture; ActivityCompat.requestPermissions(SampleCamActivity.this, new String[] { Manifest.permission.WRITE_EXTERNAL_STORAGE }, WIKITUDE_PERMISSIONS_REQUEST_EXTERNAL_STORAGE); } else { SampleCamActivity.this.saveScreenCaptureToExternalStorage(screenCapture); } } }); } return true; } }; } @Override public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) { switch (requestCode) { case WIKITUDE_PERMISSIONS_REQUEST_EXTERNAL_STORAGE: { if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { this.saveScreenCaptureToExternalStorage(SampleCamActivity.this.screenCapture); } else { Toast.makeText(this, "Please allow access to external storage, otherwise the screen capture can not be saved.", Toast.LENGTH_SHORT).show(); } } } } @Override public ILocationProvider getLocationProvider(final LocationListener locationListener) { return new LocationProvider(this, locationListener); } @Override public float getInitialCullingDistanceMeters() { // you need to adjust this in case your POIs are more than 50km away from user here while loading or in JS code (compare 'AR.context.scene.cullingDistance') return ArchitectViewHolderInterface.CULLING_DISTANCE_DEFAULT_METERS; } @Override protected boolean hasGeo() { return getIntent().getExtras().getBoolean(MainSamplesListActivity.EXTRAS_KEY_ACTIVITY_GEO); } @Override protected boolean hasIR() { return getIntent().getExtras().getBoolean(MainSamplesListActivity.EXTRAS_KEY_ACTIVITY_IR); } @Override protected CameraPosition getCameraPosition() { return CameraPosition.DEFAULT; } protected void saveScreenCaptureToExternalStorage(Bitmap screenCapture) { if (screenCapture != null) { // store screenCapture into external cache directory final File screenCaptureFile = new File(Environment.getExternalStorageDirectory().toString(), "screenCapture_" + System.currentTimeMillis() + ".jpg"); // 1. Save bitmap to file & compress to jpeg. You may use PNG too try { final FileOutputStream out = new FileOutputStream(screenCaptureFile); screenCapture.compress(Bitmap.CompressFormat.JPEG, 90, out); out.flush(); out.close(); // 2. create send intent final Intent share = new Intent(Intent.ACTION_SEND); share.setType("image/jpg"); share.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(screenCaptureFile)); // 3. launch intent-chooser final String chooserTitle = "Share Snaphot"; SampleCamActivity.this.startActivity(Intent.createChooser(share, chooserTitle)); } catch (final Exception e) { // should not occur when all permissions are set SampleCamActivity.this.runOnUiThread(new Runnable() { @Override public void run() { // show toast message in case something went wrong Toast.makeText(SampleCamActivity.this, "Unexpected error, " + e, Toast.LENGTH_LONG).show(); } }); } } } }