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Code Issues Projects Releases Packages Wiki Activity Actions 1

Support switching to the front-facing camera in ScannerActivity

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Close #8
This commit is contained in:
Alexander Bakker 2018-05-11 16:31:18 +02:00
parent 7be5d08a60
commit 34d0134404
4 changed files with 116 additions and 1 deletions
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90
app/src/main/java/me/impy/aegis/ui/ScannerActivity.java
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@ -2,7 +2,10 @@ package me.impy.aegis.ui;
import android.content.Context;
import android.content.Intent;
import android.hardware.Camera;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
import com.google.zxing.BarcodeFormat;
@ -12,14 +15,20 @@ import java.util.Collections;
import me.dm7.barcodescanner.core.IViewFinder;
import me.dm7.barcodescanner.zxing.ZXingScannerView;
import me.impy.aegis.R;
import me.impy.aegis.crypto.KeyInfo;
import me.impy.aegis.crypto.KeyInfoException;
import me.impy.aegis.db.DatabaseEntry;
import me.impy.aegis.helpers.SquareFinderView;
import me.impy.aegis.ui.views.KeyProfile;
import static android.hardware.Camera.CameraInfo.CAMERA_FACING_BACK;
import static android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT;
public class ScannerActivity extends AegisActivity implements ZXingScannerView.ResultHandler {
private ZXingScannerView _scannerView;
private Menu _menu;
private int _facing = CAMERA_FACING_BACK;
@Override
protected void onCreate(Bundle state) {
@ -33,11 +42,51 @@ public class ScannerActivity extends AegisActivity implements ZXingScannerView.R
};
_scannerView.setResultHandler(this);
_scannerView.setFormats(Collections.singletonList(BarcodeFormat.QR_CODE));
_scannerView.startCamera();
int camera = getRearCameraId();
if (camera == -1) {
camera = getFrontCameraId();
if (camera == -1) {
Toast.makeText(this, "No cameras available", Toast.LENGTH_LONG).show();
finish();
}
_facing = CAMERA_FACING_FRONT;
}
_scannerView.startCamera(camera);
setContentView(_scannerView);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
_menu = menu;
getMenuInflater().inflate(R.menu.menu_scanner, menu);
updateCameraIcon();
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_camera:
_scannerView.stopCamera();
switch (_facing) {
case CAMERA_FACING_BACK:
_facing = CAMERA_FACING_FRONT;
break;
case CAMERA_FACING_FRONT:
_facing = CAMERA_FACING_BACK;
break;
}
_scannerView.startCamera(getCameraId(_facing));
updateCameraIcon();
return true;
case R.id.action_lock:
default:
return super.onOptionsItemSelected(item);
}
}
@Override
protected void setPreferredTheme(boolean nightMode) {
@ -46,6 +95,7 @@ public class ScannerActivity extends AegisActivity implements ZXingScannerView.R
@Override
public void onResume() {
super.onResume();
_scannerView.startCamera();
}
@Override
@ -72,4 +122,42 @@ public class ScannerActivity extends AegisActivity implements ZXingScannerView.R
_scannerView.resumeCameraPreview(this);
}
private void updateCameraIcon() {
if (_menu != null) {
MenuItem item = _menu.findItem(R.id.action_camera);
boolean dual = getFrontCameraId() != -1 && getRearCameraId() != -1;
if (dual) {
switch (_facing) {
case CAMERA_FACING_BACK:
item.setIcon(R.drawable.ic_camera_front_24dp);
break;
case CAMERA_FACING_FRONT:
item.setIcon(R.drawable.ic_camera_rear_24dp);
break;
}
}
item.setVisible(dual);
}
}
private static int getCameraId(int facing) {
Camera.CameraInfo info = new Camera.CameraInfo();
for (int i = 0; i < Camera.getNumberOfCameras(); ++i) {
Camera.getCameraInfo(i, info);
if (info.facing == facing) {
return i;
}
}
return -1;
}
private static int getRearCameraId() {
return getCameraId(CAMERA_FACING_BACK);
}
private static int getFrontCameraId() {
return getCameraId(CAMERA_FACING_FRONT);
}
}