更新日 - 私の放送のアイデアを表示するためのコードを編集しました。メソッドを使用すると、!!! FAILED BINDER TRANSACTION !!!トーストで表示される位置データはありません。複数のアクティビティにわたる位置情報サービス
グーグルが融合した位置情報サービスをアクティビティから分離するためのエレガントな方法があるのだろうかと思っていました。私の警告クラスは現在位置情報サービスを実装していますが、写真を撮る別のアクティビティがあります。写真が撮られるとき、私は場所を画像に関連づけたいと思う。私の現在のアイデアは、私のBluetooth受信機を私のBluetooth警告クラスで使用して、私のカメラが送信した放送を聞いて、それを場所に関連付けることです。私はそれが機能を非常によく分離していないので、いくつかの提案やパターンを期待していたので、アイデアのファンではありません。以下のクラスのコード。
CAMERA CLASS
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class CameraOperations extends AppCompatActivity {
public final static String ACTION_PICTURE_RECEIVED = "ACTION_PICTURE_RECEIVED";
public final static String TRANSFER_DATA = "bitmap";
ImageView mImageView;
String photoPath;
int REQUEST_IMAGE_CAPTURE = 1;
File photoFile = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.camera_view);
mImageView = (ImageView) findViewById(R.id.imageView);
if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
Toast.makeText(CameraOperations.this, "No Camera", Toast.LENGTH_SHORT).show();
} else {
dispatchTakePictureIntent();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK){
if(data == null){
Toast.makeText(this, "Data is null", Toast.LENGTH_SHORT);
Bitmap pictureMap = BitmapFactory.decodeFile(photoFile.getAbsolutePath());
mImageView.setImageBitmap(pictureMap);
broadcastUpdate(ACTION_PICTURE_RECEIVED, pictureMap);
}else {
Toast.makeText(this, "Error Occurred", Toast.LENGTH_SHORT).show();
}
}
}
private void broadcastUpdate(final String action, Bitmap picture) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
picture.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] bytes = stream.toByteArray();
Intent intent = new Intent(action);
intent.putExtra(TRANSFER_DATA, bytes);
sendBroadcast(intent);
intent = new Intent(CameraOperations.this, Warning.class);
startActivity(intent);
finish();
}
private File createImageFile() throws IOException {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(imageFileName, ".jpg", storageDir);
photoPath = "file:" + image.getAbsolutePath();
return image;
}
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
try{
photoFile = createImageFile();
}catch(IOException e){
e.printStackTrace();
}
if(photoFile != null){
Uri photoUri = Uri.fromFile(photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
}
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
BLUETOOTH警告クラス
import android.Manifest;
import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothGattService;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.location.Location;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GoogleApiAvailability;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
public class Warning extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
private final static String TAG = Warning.class.getSimpleName();
private String mDeviceAddress;
private HandleConnectionService mBluetoothLeService;
private boolean quitService;
private final int PLAY_SERVICES_REQUEST_TIME = 1000;
private Location mLastLocation;
private GoogleApiClient mGoogleClient;
private boolean requestingLocationUpdates = false;
private LocationRequest locationRequest;
private int UPDATE_INTERVAL = 10000; // 10 seconds
private int FASTEST_INTERVAL = 5000; // 5 seconds
private int DISTANCEMOVED = 10; //In meters
private final ServiceConnection mServiceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName componentName, IBinder service) {
mBluetoothLeService = ((HandleConnectionService.LocalBinder) service).getService();
if (!mBluetoothLeService.initialize()) {
Log.e(TAG, "Unable to initialize Bluetooth");
finish();
}
mBluetoothLeService.connect(mDeviceAddress);
}
@Override
public void onServiceDisconnected(ComponentName componentName) {
mBluetoothLeService = null;
}
};
private final BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (HandleConnectionService.ACTION_GATT_DISCONNECTED.equals(action)) {
if (!quitService) {
mBluetoothLeService.connect(mDeviceAddress);
Log.w(TAG, "Attempting to reconnect");
}
Log.w(TAG, "Disconnected, activity closing");
} else if (HandleConnectionService.ACTION_GATT_SERVICES_DISCOVERED.equals(action)) {
getGattService(mBluetoothLeService.getSupportedGattService());
} else if (HandleConnectionService.ACTION_DATA_AVAILABLE.equals(action)) {
checkWarning(intent.getByteArrayExtra(HandleConnectionService.EXTRA_DATA));
}else if(CameraOperations.ACTION_PICTURE_RECEIVED.equals(action)){
byte[] bytes = intent.getByteArrayExtra("bitmap");
Bitmap picture = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
findLocation();
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
Toolbar myToolbar = (Toolbar) findViewById(R.id.my_toolbar);
setSupportActionBar(myToolbar);
if (checkGoogleServices()) {
buildGoogleApiClient();
}
quitService = false;
Intent intent = getIntent();
mDeviceAddress = intent.getStringExtra(Device.EXTRA_DEVICE_ADDRESS);
Intent gattServiceIntent = new Intent(this, HandleConnectionService.class);
bindService(gattServiceIntent, mServiceConnection, BIND_AUTO_CREATE);
}
@Override
protected void onResume() {
super.onResume();
registerReceiver(mGattUpdateReceiver, makeGattUpdateIntentFilter());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.mainmenu, menu);
MenuItem connect = menu.findItem(R.id.connect);
connect.setVisible(false);
MenuItem disconnect = menu.findItem(R.id.disconnect);
disconnect.setVisible(true);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Intent intent;
switch (item.getItemId()) {
case R.id.home:
new AlertDialog.Builder(this)
.setIcon(android.R.drawable.ic_dialog_alert)
.setTitle("Return Home")
.setMessage("Returning home will disconnect you, continue?")
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
quitService = true;
mBluetoothLeService.disconnect();
mBluetoothLeService.close();
Intent intent = new Intent(Warning.this, Main.class);
startActivity(intent);
}
})
.setNegativeButton("No", null)
.show();
return true;
case R.id.connect:
Toast.makeText(this, "Connect Pressed", Toast.LENGTH_SHORT).show();
return true;
case R.id.disconnect:
disconnectOperation();
intent = new Intent(Warning.this, Main.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
case R.id.profiles:
Toast.makeText(this, "Profiles Pressed", Toast.LENGTH_SHORT).show();
return true;
case R.id.camera:
Toast.makeText(this, "Camera Pressed", Toast.LENGTH_SHORT).show();
intent = new Intent(Warning.this, CameraOperations.class);
startActivity(intent);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
quitService = true;
mBluetoothLeService.disconnect();
mBluetoothLeService.close();
Intent intent = new Intent(Warning.this, Main.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
protected void onDestroy() {
super.onDestroy();
mBluetoothLeService.disconnect();
mBluetoothLeService.close();
System.exit(0);
}
public boolean disconnectOperation(){
this.quitService = true;
mBluetoothLeService.disconnect();
mBluetoothLeService.close();
return true;
}
private void checkWarning(byte[] byteArray) {
if (byteArray != null) {
for (int i = 0; i < byteArray.length; i++) {
if (byteArray[i] == 48) {
findLocation();
}
}
}
}
private void getGattService(BluetoothGattService gattService) {
if (gattService == null) {
return;
}
BluetoothGattCharacteristic characteristicRx = gattService.getCharacteristic(HandleConnectionService.UUID_BLE_SHIELD_RX);
mBluetoothLeService.setCharacteristicNotification(characteristicRx, true);
mBluetoothLeService.readCharacteristic(characteristicRx);
}
private static IntentFilter makeGattUpdateIntentFilter() {
final IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(HandleConnectionService.ACTION_GATT_CONNECTED);
intentFilter.addAction(HandleConnectionService.ACTION_GATT_DISCONNECTED);
intentFilter.addAction(HandleConnectionService.ACTION_GATT_SERVICES_DISCOVERED);
intentFilter.addAction(HandleConnectionService.ACTION_DATA_AVAILABLE);
intentFilter.addAction(CameraOperations.ACTION_PICTURE_RECEIVED);
return intentFilter;
}
private boolean checkGoogleServices() {
GoogleApiAvailability googleAPI = GoogleApiAvailability.getInstance();
int available = googleAPI.isGooglePlayServicesAvailable(this);
if (available != ConnectionResult.SUCCESS) {
if (googleAPI.isUserResolvableError(available)) {
googleAPI.getErrorDialog(this, available, PLAY_SERVICES_REQUEST_TIME).show();
}
return false;
}
return true;
}
public void findLocation() {
int REQUEST_CODE_ASK_PERMISSIONS = 123;
double latitude = 0.0;
double longitude = 0.0;
if(Build.VERSION.SDK_INT >= 23){
boolean fineLocationAccess = ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED;
boolean courseLocationAccess = ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED;
boolean accessGranted = fineLocationAccess && courseLocationAccess;
if (accessGranted) {
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleClient);
if(mLastLocation != null) {
latitude = mLastLocation.getLatitude();
longitude = mLastLocation.getLongitude();
Toast.makeText(this, "latitude: " + latitude + " longitude: " + longitude, Toast.LENGTH_LONG).show();
}else{
Log.i("Warning", "Unable to get Location");
}
}else{
Log.i("Connection", "Request permission");
}
}else{
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleClient);
if(mLastLocation != null) {
latitude = mLastLocation.getLatitude();
longitude = mLastLocation.getLongitude();
Toast.makeText(this, "latitude: " + latitude + " longitude: " + longitude, Toast.LENGTH_LONG).show();
}else{
Log.i("Warning", "Unable to get Location");
}
}
}
public void buildGoogleApiClient() {
mGoogleClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API).build();
}
@Override
public void onConnected(Bundle bundle) {
Log.w("Connected", " : " + mGoogleClient.isConnected());
}
@Override
public void onConnectionSuspended(int i) {
Toast.makeText(this, "Location Services Stopped", Toast.LENGTH_SHORT).show();
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Toast.makeText(this, "Location Services Connection Fail", Toast.LENGTH_SHORT).show();
}
@Override
protected void onStart() {
super.onStart();
if (mGoogleClient != null) {
mGoogleClient.connect();
}
}
}
ありがとうございました!それはかなり楽しいプロジェクトです。アンドロイドへの良い再導入。新しいパターン/スタイルを学ぼうとするのは、ちょうどjavaよりも少し違った感じです。私はこれらのカップルを試してみて、どれが一番いいと感じるか見てみましょう。 – Ubarjohade