Текст книги "Разработка Android-приложений в деталях"

editor. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

editor.commit ();

}

mGoogleDriveApiClient = new GoogleApiClient. Builder (this)

.addApi (Drive. API)

.addScope(Drive.SCOPE_FILE)

.addConnectionCallbacks (this)

.addOnConnectionFailedListener (this)

.addApi (AppIndex. API).build ();

mGoogleDriveApiClient.connect ();

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

fab.setOnClickListener (new View. OnClickListener () {

@Override

public void onClick (View view) {

Boolean start = mSettings.getBoolean («APP_PREFERENCES_START_ALARM», false);

if (start == false) {

long interval = mSettings.getLong («TRACKING_INTERVAL», 15L * 1000 * 60);

StartAlarmIntentService.startActionAlarm (context, interval);

SharedPreferences. Editor editor = mSettings. edit ();

editor. putBoolean («APP_PREFERENCES_START_ALARM», true);

editor.commit ();

Snackbar snack = Snackbar.make (view, «Tracking started with " + interval / (1000 * 60) + " minutes interval», Snackbar. LENGTH_LONG);

View snackbarView = snack.getView ();

snackbarView.setBackgroundColor(Color.parseColor («#e1da21»));

TextView tv = (TextView) snackbarView.findViewById(android.support.design.R.id.snackbar_text);

tv.setGravity (Gravity. CENTER);

snack.setAction («Action», null).show ();

} else {

long interval = mSettings.getLong («TRACKING_INTERVAL», 15L * 1000 * 60);

Snackbar snack = Snackbar.make (view, «Tracking is already working with " + interval / (1000 * 60) + " minutes interval», Snackbar. LENGTH_LONG);

View snackbarView = snack.getView ();

snackbarView.setBackgroundColor(Color.parseColor («#e1da21»));

TextView tv = (TextView) snackbarView.findViewById(android.support.design.R.id.snackbar_text);

tv.setGravity (Gravity. CENTER);

snack.setAction («Action», null).show ();

}

}

});

DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);

ActionBarDrawerToggle toggle = new ActionBarDrawerToggle (

this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);

drawer.setDrawerListener (toggle);

toggle.syncState ();

NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);

navigationView.setNavigationItemSelectedListener (this);

}

@Override

public void onSaveInstanceState (Bundle savedInstanceState) {

// Save custom values into the bundle

savedInstanceState. putLong («TRACKING_INTERVAL», TRACKING_INTERVAL);

savedInstanceState. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

// Always call the superclass so it can save the view hierarchy state

super. onSaveInstanceState (savedInstanceState);

}

public void onRestoreInstanceState (Bundle savedInstanceState) {

// Always call the superclass so it can restore the view hierarchy

super. onRestoreInstanceState (savedInstanceState);

// Restore state members from saved instance

TRACKING_INTERVAL = savedInstanceState.getLong («TRACKING_INTERVAL»);

SAVING_INTERVAL = savedInstanceState.getLong («SAVING_INTERVAL»);

}

@Override

public void onBackPressed () {

DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);

if (drawer.isDrawerOpen(GravityCompat.START)) {

drawer.closeDrawer(GravityCompat.START);

} else {

super. onBackPressed ();

}

}

@Override

public boolean onCreateOptionsMenu (Menu menu) {

getMenuInflater().inflate(R.menu.main, menu);

long interval=mSettings.getLong («TRACKING_INTERVAL», 15L * 1000 * 60);

int itemID = getResources().getIdentifier («action_" + (int) (interval / (1000 * 60)) + "_minute», «id», getPackageName ());

MenuItem item = menu.findItem (itemID);

item.setChecked (true);

long saving_interval=mSettings.getLong («SAVING_INTERVAL», 24L * 1000 * 60 * 60);

itemID = getResources().getIdentifier («action_data_" + (int) (saving_interval/ (1000*60*60*24)) +"_day», «id», getPackageName ());

item = menu.findItem (itemID);

item.setChecked (true);

return true;

}

@Override

public boolean onOptionsItemSelected (MenuItem item) {

int id = item.getItemId ();

if (id == R.id.action_setting_account) {

DialogFragment dialog = new LoginDialogFragment ();

dialog.show (getSupportFragmentManager (), «LoginDialogFragment»);

return true;

}

if (id == R.id.action_data_1_day) {

item.setChecked (true);

SAVING_INTERVAL=24L*1000*60*60;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_data_2_day) {

item.setChecked (true);

SAVING_INTERVAL=24L*1000*60*60*2;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_data_3_day) {

item.setChecked (true);

SAVING_INTERVAL=24L*1000*60*60*3;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_data_4_day) {

item.setChecked (true);

SAVING_INTERVAL=24L*1000*60*60*4;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_data_5_day) {

item.setChecked (true);

SAVING_INTERVAL=24L*1000*60*60*5;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_data_6_day) {

item.setChecked (true);

SAVING_INTERVAL=24L*1000*60*60*6;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_data_7_day) {

item.setChecked (true);

SAVING_INTERVAL=24L*1000*60*60*7;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_data_14_day) {

item.setChecked (true);

SAVING_INTERVAL=24L*1000*60*60*14;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_data_30_day) {

item.setChecked (true);

SAVING_INTERVAL=24L*1000*60*60*30;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («SAVING_INTERVAL», SAVING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_1_minute) {

item.setChecked (true);

TRACKING_INTERVAL=1L*1000*60;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («TRACKING_INTERVAL», TRACKING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_5_minute) {

item.setChecked (true);

TRACKING_INTERVAL=5L*1000*60;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («TRACKING_INTERVAL», TRACKING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_10_minute) {

item.setChecked (true);

TRACKING_INTERVAL=10L*1000*60;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («TRACKING_INTERVAL», TRACKING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_15_minute) {

item.setChecked (true);

TRACKING_INTERVAL=15L*1000*60;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («TRACKING_INTERVAL», TRACKING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_30_minute) {

item.setChecked (true);

TRACKING_INTERVAL=30L*1000*60;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («TRACKING_INTERVAL», TRACKING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_60_minute) {

item.setChecked (true);

TRACKING_INTERVAL=60L*1000*60;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («TRACKING_INTERVAL», TRACKING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_240_minute) {

item.setChecked (true);

TRACKING_INTERVAL=240L*1000*60;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («TRACKING_INTERVAL», TRACKING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_720_minute) {

item.setChecked (true);

TRACKING_INTERVAL=720L*1000*60;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («TRACKING_INTERVAL», TRACKING_INTERVAL);

editor.commit ();

return true;

}

if (id == R.id.action_1440_minute) {

item.setChecked (true);

TRACKING_INTERVAL=1440L*1000*60;

SharedPreferences. Editor editor = mSettings. edit ();

editor. putLong («TRACKING_INTERVAL», TRACKING_INTERVAL);

editor.commit ();

return true;

}

return super. onOptionsItemSelected (item);

}

@SuppressWarnings («StatementWithEmptyBody»)

@Override

public boolean onNavigationItemSelected (MenuItem item) {

// Handle navigation view item clicks here.

int id = item.getItemId ();

if (id == R.id.nav_start_tracking) {

Boolean start=mSettings.getBoolean («APP_PREFERENCES_START_ALARM», false);

if (start==false) {

long interval = mSettings.getLong («TRACKING_INTERVAL», 15L * 1000 * 60);

StartAlarmIntentService.startActionAlarm (context, interval);

SharedPreferences. Editor editor = mSettings. edit ();

editor. putBoolean («APP_PREFERENCES_START_ALARM», true);

editor.commit ();

View view = (View) findViewById(R.id.content);

Snackbar snack = Snackbar.make (view, «Tracking started with " + interval / (1000 * 60) + " minutes interval», Snackbar. LENGTH_LONG);

View snackbarView = snack.getView ();

snackbarView.setBackgroundColor(Color.parseColor («#e1da21»));

TextView tv = (TextView) snackbarView.findViewById(android.support.design.R.id.snackbar_text);

tv.setGravity (Gravity. CENTER);

snack.setAction («Action», null).show ();

} else {

long interval = mSettings.getLong («TRACKING_INTERVAL», 15L * 1000 * 60);

View view = (View) findViewById(R.id.content);

Snackbar snack = Snackbar.make (view, «Tracking is already working with " + interval / (1000 * 60) + " minutes interval», Snackbar. LENGTH_LONG);

View snackbarView = snack.getView ();

snackbarView.setBackgroundColor(Color.parseColor («#e1da21»));

TextView tv = (TextView) snackbarView.findViewById(android.support.design.R.id.snackbar_text);

tv.setGravity (Gravity. CENTER);

snack.setAction («Action», null).show ();

}

} else if (id == R.id.nav_stop_tracking) {

Intent intent = new Intent (getApplicationContext (), LocationReceiver.class);

final PendingIntent pIntent = PendingIntent.getBroadcast (getApplicationContext (), LocationReceiver.REQUEST_CODE, intent, PendingIntent. FLAG_CANCEL_CURRENT);

AlarmManager alarm = (AlarmManager) getApplicationContext().getSystemService(Context.ALARM_SERVICE);

alarm.cancel (pIntent);

SharedPreferences. Editor editor = mSettings. edit ();

editor. putBoolean («APP_PREFERENCES_START_ALARM», false);

editor.commit ();

View view= (View) findViewById(R.id.content);

Snackbar snack = Snackbar.make (view, «Tracking has stopped», Snackbar. LENGTH_LONG);

View snackbarView = snack.getView ();

snackbarView.setBackgroundColor(Color.parseColor («#e1da21»));

TextView tv = (TextView) snackbarView.findViewById(android.support.design.R.id.snackbar_text);

tv.setGravity (Gravity. CENTER);

snack.setAction («Action», null).show ();

} else if (id == R.id.nav_clear_data) {

LocationDBHelper dbhelper=LocationDBHelper.getInstance (context);

dbhelper.clearLocation ();

View view= (View) findViewById(R.id.content);

Snackbar snack = Snackbar.make (view, «Location data removed», Snackbar. LENGTH_LONG);

View snackbarView = snack.getView ();

snackbarView.setBackgroundColor(Color.parseColor («#e1da21»));

TextView tv = (TextView) snackbarView.findViewById(android.support.design.R.id.snackbar_text);

tv.setGravity (Gravity. CENTER);

snack.setAction («Action», null).show ();

}

DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);

drawer.closeDrawer(GravityCompat.START);

return true;

}

@Override

protected void onStop () {

mGoogleDriveApiClient. disconnect ();

this.finish ();

super. onStop ();

}

@Override

public void onConnected (Bundle bundle) {

if (mSettings.contains («TRACKING_FILE»)) {

String fileID = mSettings.getString («TRACKING_FILE», «»);

DriveId sFileId = DriveId.decodeFromString (fileID);

DriveResource file = Drive.DriveApi.getFile (mGoogleDriveApiClient, sFileId);

file.getMetadata(mGoogleDriveApiClient).setResultCallback (new ResultCallback<DriveResource.MetadataResult> () {

@Override

public void onResult(DriveResource.MetadataResult result) {

if (!result.getStatus().isSuccess ()) {

createFile ();

} else {

if(result.getMetadata().isTrashed ()) {

createFile ();

}

}

}

});

} else {

createFile ();

}

}

private void createFile () {

MetadataChangeSet changeSet = new MetadataChangeSet. Builder ()

.setTitle («BabyTracking»).build ();

Drive.DriveApi.getRootFolder(mGoogleDriveApiClient).createFolder (

mGoogleDriveApiClient, changeSet).setResultCallback (new ResultCallback <DriveFolder. DriveFolderResult> () {

@Override

public void onResult (DriveFolder. DriveFolderResult result_) {

final DriveFolder. DriveFolderResult result = result_;

if (!result.getStatus().isSuccess ()) {

return;

}

String folderID = result.getDriveFolder().getDriveId().toString ();

SharedPreferences. Editor editor = mSettings. edit ();

editor. putString («TRACKING_FOLDER», folderID);

editor.commit ();

Toast.makeText (getApplicationContext (), «Folder BabyTracking created», Toast.LENGTH_LONG).show ();

DriveFolder folder = result.getDriveFolder ();

MetadataChangeSet changeSet = new MetadataChangeSet. Builder ()

.setTitle («Tracking»)

.setMimeType («text/plain»).build ();

folder.createFile (mGoogleDriveApiClient, changeSet, null)

.setResultCallback (new ResultCallback <DriveFolder. DriveFileResult> () {

@Override

public void onResult (DriveFolder. DriveFileResult result_) {

final DriveFolder. DriveFileResult result = result_;

if (!result.getStatus().isSuccess ()) {

return;

}

String fileID = result.getDriveFile().getDriveId().toString ();

SharedPreferences. Editor editor = mSettings. edit ();

editor. putString («TRACKING_FILE», fileID);

editor.commit ();

Toast.makeText (getApplicationContext (), «File Tracking created», Toast.LENGTH_LONG).show ();

}

});

}

});

}

@Override

public void onConnectionSuspended (int i) {

}

@Override

public void onConnectionFailed (ConnectionResult connectionResult) {

if (connectionResult. hasResolution ()) {

try {

connectionResult.startResolutionForResult (this, RESOLVE_CONNECTION_REQUEST_CODE);

} catch (IntentSender.SendIntentException e) {

}

} else {

GooglePlayServicesUtil.getErrorDialog(connectionResult.getErrorCode (), this, 0).show ();

}

}

@Override

protected void onActivityResult (final int requestCode, final int resultCode, final Intent data) {

switch (requestCode) {

case RESOLVE_CONNECTION_REQUEST_CODE:

if (resultCode == RESULT_OK) {

mGoogleDriveApiClient.connect ();

}

break;

}

}

@Override

public void onStart () {

super. onStart ();

mGoogleDriveApiClient.connect ();

}

public static class LoginDialogFragment extends DialogFragment {

private View view;

private AlertDialog alert;

private SharedPreferences mSettings;

@Override

public Dialog onCreateDialog (Bundle savedInstanceState) {

AlertDialog. Builder builder = new AlertDialog. Builder (getActivity ());

LayoutInflater inflater = getActivity().getLayoutInflater ();

view = (View) inflater.inflate(R.layout. dialog_login, null);

builder.setView (view)

// Add action buttons

.setPositiveButton(R.string. button_submit, new DialogInterface. OnClickListener () {

@Override

public void onClick (DialogInterface dialog, int id) {

}

})

.setNegativeButton(R.string. button_cancel, new DialogInterface. OnClickListener () {

public void onClick (DialogInterface dialog, int id) {

LoginDialogFragment.this.getDialog().cancel ();

}

});

alert = builder.create ();

alert.setOnShowListener (new DialogInterface. OnShowListener () {

@Override

public void onShow (DialogInterface dialog) {

Button btnPositive = alert.getButton (Dialog. BUTTON_POSITIVE);

btnPositive.setTextSize(TypedValue.COMPLEX_UNIT_PX, 25.0f);

btnPositive.setTextColor(Color.parseColor («#e1da21»));

btnPositive.setGravity (Gravity. CENTER);

Button btnNegative = alert.getButton (Dialog. BUTTON_NEGATIVE);

btnNegative.setTextSize(TypedValue.COMPLEX_UNIT_PX, 25.0f);

btnNegative.setTextColor(Color.parseColor («#e1da21»));

btnNegative.setGravity (Gravity. CENTER);

}

});

return alert;

}

@Override

public void onStart () {

super. onStart ();

alert.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener (new View. OnClickListener () {

@Override

public void onClick (View v) {

Boolean wantToCloseDialog = false;

EditText login = (EditText) view.findViewById(R.id.dialog_username);

EditText password = (EditText) view.findViewById(R.id.dialog_password);

if ((login. length ()!= 0) && (password. length ()!= 0)) {

mSettings = getContext().getSharedPreferences («APP_PREFERENCES», Context.MODE_PRIVATE);

SharedPreferences. Editor editor = mSettings. edit ();

editor. putString («APP_PREFERENCES_LOGIN», login.getText().toString ());

editor. putString («APP_PREFERENCES_PASSWORD», login.getText().toString ());

editor.commit ();

wantToCloseDialog=true;

} else {

Toast.makeText (getContext (), «The login or password is empty», Toast.LENGTH_LONG).show ();

}

if (wantToCloseDialog)

alert. dismiss ();

}

});

}

}

}

Файл компоновки activity_main:

<?xml version=«1.0» encoding=«utf-8»? >

http://schemas.android.com/apk/res/android"pport. v4.widget. DrawerLayout xmlns: android="<android.su

xmlns: app="http://schemas.android.com/apk/res-auto"

xmlns: tools="http://schemas.android.com/tools" android: id="@+id/drawer_layout»

android: layout_width=«match_parent» android: layout_height=«match_parent»

android: fitsSystemWindows=«true» tools: openDrawer=«start»>

<include layout="@layout/app_bar_main»

android: layout_width=«match_parent»

android: layout_height=«match_parent» />

<android.support.design.widget.NavigationView

android: id="@+id/nav_view»

android: layout_width=«wrap_content»

android: layout_height=«wrap_content»

android: layout_gravity=«start»

android: fitsSystemWindows=«true»

app: headerLayout="@layout/nav_header_main»

app: menu="@menu/activity_main_drawer»

app: itemTextColor="@color/item_drawer»

android: theme="@style/NavigationViewStyle»

/>

</android.support. v4.widget. DrawerLayout>

Файл компоновки app_bar_main:

<?xml version=«1.0» encoding=«utf-8»? >

<android.support.design.widget.CoordinatorLayout

xmlns: android="http://schemas.android.com/apk/res/android"

xmlns: app="http://schemas.android.com/apk/res-auto"

xmlns: tools="http://schemas.android.com/tools" android: layout_width=«match_parent»

android: layout_height=«match_parent» android: fitsSystemWindows=«true»

tools:context=".MainActivity»>

<android.support.design. widget. AppBarLayout android: layout_height=«wrap_content»

android: layout_width=«match_parent» android: theme="@style/AppTheme. AppBarOverlay»>

<android.support.v7.widget.Toolbar android: id="@+id/toolbar»

android: layout_width=«match_parent»

android: layout_height=»? attr/actionBarSize»

android: background=»? attr/colorPrimary»

app: popupTheme="@style/AppTheme. PopupOverlay»

app: layout_scrollFlags=«scroll|enterAlways»

/>

</android.support.design. widget. AppBarLayout>

<android.support.v4.widget.NestedScrollView

xmlns: android="http://schemas.android.com/apk/res/android"

xmlns: app="http://schemas.android.com/apk/res-auto"

xmlns: tools="http://schemas.android.com/tools"

android: layout_width=«wrap_content»

android: layout_height=«wrap_content»

android: paddingLeft="@dimen/activity_horizontal_margin»

android: paddingRight="@dimen/activity_horizontal_margin»

android: paddingTop="@dimen/activity_vertical_margin»

android: paddingBottom="@dimen/activity_vertical_margin»

android: fillViewport=«true»

android: layout_gravity=«fill_vertical»

app: layout_behavior="@string/appbar_scrolling_view_behavior»

tools:context=".MainActivity»

tools: showIn="@layout/app_bar_main»

>

<RelativeLayout

android: layout_width=«wrap_content»

android: layout_height=«wrap_content»

>

<com.google.android.gms.ads.AdView

android: id="@+id/adViewBan»

android: layout_width=«wrap_content»

android: layout_height=«wrap_content»

xmlns: ads="http://schemas.android.com/apk/res-auto"

ads: adSize=«BANNER»

ads: adUnitId="@string/banner_ad_unit_id»

android: layout_alignParentTop=«true»

android: layout_centerHorizontal=«true»>

</com.google.android.gms.ads.AdView>

<RelativeLayout

android: layout_width=«wrap_content»

android: layout_height=«wrap_content»

android: layout_below="@+id/adViewBan»

android: id="@+id/content»

>

<TextView android: text=«Start Tracking!»

android: layout_width=«wrap_content»

android: layout_height=«wrap_content»

android:textAppearance="@style/Base.TextAppearance.AppCompat.Large»

android: gravity=«right»

android: textColor=«#261860»

android: textStyle=«bold»

android: paddingLeft="@dimen/activity_horizontal_margin»

/>

</RelativeLayout>

</RelativeLayout>

</android.support.v4.widget.NestedScrollView>

<android.support.design. widget. FloatingActionButton

android: id="@+id/fab»

android: layout_width=«wrap_content»

android: layout_height=«wrap_content»

android: layout_gravity=«bottom|end»

android: layout_margin="@dimen/fab_margin»

android: src="@android: drawable/ic_input_add»

app:layout_behavior="com.tmsoftstudio.babytracking.ScrollFABBehavior»

app: layout_anchorGravity=«bottom|center»

app: layout_anchor="@id/content»

/>

</android.support.design.widget.CoordinatorLayout>

Файл компоновки заголовка навигационной панели:

<?xml version=«1.0» encoding=«utf-8»? >

<LinearLayout xmlns: android="http://schemas.android.com/apk/res/android"

android: layout_width=«match_parent»

android: layout_height=«wrap_content»

android: background="@drawable/side_nav_bar»

android: paddingBottom="@dimen/activity_vertical_margin»

android: paddingLeft="@dimen/activity_horizontal_margin»

android: paddingRight="@dimen/activity_horizontal_margin»

android: paddingTop="@dimen/activity_vertical_margin»

android: theme="@style/ThemeOverlay. AppCompat. Dark»

android: orientation=«vertical»

android: gravity=«bottom»>

<ImageView

android: layout_width=«wrap_content»

android: layout_height=«100dp»

android: src="@drawable/logotracking»

android: id="@+id/imageView»

/>

<TextView android: layout_width=«match_parent»

android: layout_height=«wrap_content»

android: text=«Baby Tracking»

android:textAppearance="@style/Base.TextAppearance.AppCompat.Large»

android: gravity=«center»

android: textColor=«#261860»

android: textStyle=«bold»

/>

</LinearLayout>

В методе onCreate активности создается и включается объект GoogleApiClient, обеспечивающий доступ к облачному хранению Google Drive.

При первой загрузке приложения открывается диалоговое окно, предлагающее выбрать аккаунт для авторизации доступа к сервису Google Drive. После успешной авторизации – для этого также нужно зарегистрировать для проекта OAuth 2.0 client ID – создается папка и файл в Google Drive для хранения данных трекинга.

Кнопка FloatingActionButton запускает сервис StartAlarmIntentService, который в свою очередь запускает сервис оповещений с установленной периодичностью:

import android.app.AlarmManager;

import android.app.IntentService;

import android.app.PendingIntent;

import android.content.Intent;

import android.content.Context;

public class StartAlarmIntentService extends IntentService {

static final String ACTION_START_ALARM = "com.tmsoftstudio.babytracking.action.START_ALARM»;

static final String EXTRA_PARAM_INTERVAL = "com.tmsoftstudio.babytracking.extra.PARAM_INTERVAL»;

static final String ACTION_START_ALARM_BOOT = "com.tmsoftstudio.babytracking.action.START_ALARM_BOOT»;

public static void startActionAlarm (Context context, long param) {

Intent intent = new Intent (context, StartAlarmIntentService.class);

intent.setAction (ACTION_START_ALARM);

intent. putExtra (EXTRA_PARAM_INTERVAL, param);

context.startService (intent);

}

public StartAlarmIntentService () {

super («StartAlarmIntentService»);

}

@Override

protected void onHandleIntent (Intent intent) {

if (intent!= null) {

final String action = intent.getAction ();

if (ACTION_START_ALARM. equals (action)) {

final long param = intent.getLongExtra (EXTRA_PARAM_INTERVAL, 15L*1000*60);

if (param!=0) {

startAlarm (param);

this.stopSelf ();

}

}

if (ACTION_START_ALARM_BOOT. equals (action)) {

final long param = intent.getLongExtra (EXTRA_PARAM_INTERVAL, 15L*1000*60);

if (param!=0) {

startAlarm (param);

BootReceiver.completeWakefulIntent (intent);

this.stopSelf ();

}

}

}

}

public void startAlarm (long interval) {

Intent intent = new Intent (getApplicationContext (), LocationReceiver.class);

final PendingIntent pIntent = PendingIntent.getBroadcast (getApplicationContext (), LocationReceiver.REQUEST_CODE, intent, PendingIntent. FLAG_CANCEL_CURRENT);

long firstMillis = System.currentTimeMillis ();

AlarmManager alarm = (AlarmManager) getApplicationContext().getSystemService(Context.ALARM_SERVICE);

// alarm.setInexactRepeating (AlarmManager. RTC_WAKEUP, firstMillis, interval, pIntent);

alarm.setRepeating (AlarmManager. RTC_WAKEUP, firstMillis, interval, pIntent);

}

}

Сервис оповещений с установленной периодичностью запускает приемник LocationReceiver, запускающий сервис LocationIntentService сбора и сохранения дислокации:

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

public class LocationReceiver extends BroadcastReceiver {

public static final int REQUEST_CODE = 1;

public LocationReceiver () {

}

@Override

public void onReceive (Context context, Intent intent) {

Intent i = new Intent (context, LocationIntentService.class);

context.startService (i);

}

}

При перезагрузке устройства и ранее запущенном трекинге, сервис StartAlarmIntentService запускается автоматически с помощью приемника BootReceiver:

import android.content.SharedPreferences;

import android.support.v4.content. WakefulBroadcastReceiver;

import android.content.Context;

import android.content.Intent;

public class BootReceiver extends WakefulBroadcastReceiver {

private SharedPreferences mSettings;

public BootReceiver () {

}

@Override

public void onReceive (Context context, Intent intent) {

mSettings = context.getSharedPreferences («APP_PREFERENCES», Context.MODE_PRIVATE);

if(mSettings.contains («APP_PREFERENCES_START_ALARM»)) {

Boolean start = mSettings.getBoolean («APP_PREFERENCES_START_ALARM», false);

if (start == true) {

Intent service = new Intent (context, StartAlarmIntentService.class);

service.setAction(StartAlarmIntentService.ACTION_START_ALARM_BOOT);

long interval=mSettings.getLong («TRACKING_INTERVAL», 15L*1000*60);

service. putExtra (StartAlarmIntentService. EXTRA_PARAM_INTERVAL, interval);

startWakefulService (context, service);

}

}

}

}

При запуске сервис LocationIntentService создает и включает два объекта GoogleApiClient – один для доступа к сервису локации LocationServices, а другой для доступа к сервису Google Drive.

При соединении с сервисом локации LocationServices инициируется обновление информации о местоположении, которая записывается в базу данных приложения с помощью объектов LocationDB и LocationDBHelper:

public class LocationDB {

public String date;

public double latitude;

public double longitude;

}

import android.content.ContentValues;

import android.content.Context;

import android.database.Cursor;

import android. database. sqlite. SQLiteDatabase;

import android. database. sqlite. SQLiteOpenHelper;

import java.util.ArrayList;

import java.util.List;

public class LocationDBHelper extends SQLiteOpenHelper {

private static LocationDBHelper ourInstance;

private static final String DATABASE_NAME = «locationDatabase»;

private static final int DATABASE_VERSION = 1;

private static final String TABLE_LOCATION = «location»;

private static final String KEY_LOCATION_ID = «id»;

private static final String KEY_LOCATION_DATE = «date»;

private static final String KEY_LOCATION_LATITUDE = «latitude»;

private static final String KEY_LOCATION_LONGITUDE = «longitude»;

public static LocationDBHelper getInstance (Context context) {

if (ourInstance == null) {

ourInstance = new LocationDBHelper(context.getApplicationContext ());

}

return ourInstance;

}

private LocationDBHelper (Context context) {

super (context, DATABASE_NAME, null, DATABASE_VERSION);

}

@Override

public void onCreate (SQLiteDatabase db) {

String CREATE_LOCATION_TABLE = «CREATE TABLE " + TABLE_LOCATION +

«(» +

KEY_LOCATION_ID + " INTEGER PRIMARY KEY,» +

KEY_LOCATION_DATE + " TEXT,» +

KEY_LOCATION_LATITUDE + " DOUBLE,» +

KEY_LOCATION_LONGITUDE + " DOUBLE)»;

db. execSQL (CREATE_LOCATION_TABLE);

}

@Override

public void onUpgrade (SQLiteDatabase db, int oldVersion, int newVersion) {

if (oldVersion!= newVersion) {

db. execSQL («DROP TABLE IF EXISTS " + TABLE_LOCATION);

onCreate (db);

}

}

public void addLocation (LocationDB locationDB) {

SQLiteDatabase db = getWritableDatabase ();

db.beginTransaction ();

try {

ContentValues values = new ContentValues ();

values. put (KEY_LOCATION_DATE, locationDB. date);

values. put (KEY_LOCATION_LATITUDE, locationDB.latitude);

values. put (KEY_LOCATION_LONGITUDE, locationDB. longitude);

db.insertOrThrow (TABLE_LOCATION, null, values);

db.setTransactionSuccessful ();

} catch (Exception e) {

} finally {

db. endTransaction ();

}

}

public void clearLocation () {

SQLiteDatabase db = getWritableDatabase ();

db. execSQL («DROP TABLE IF EXISTS " + TABLE_LOCATION);

onCreate (db);

}

public List <LocationDB> getLocations () {

List <LocationDB> locations = new ArrayList <> ();

String LOCATION_SELECT_QUERY = «SELECT * FROM " + TABLE_LOCATION;

SQLiteDatabase db = getReadableDatabase ();

Cursor cursor = db. rawQuery (LOCATION_SELECT_QUERY, null);

try {

if (cursor.moveToFirst ()) {

do {

LocationDB locationDB = new LocationDB ();

locationDB. date = cursor.getString(cursor.getColumnIndex (KEY_LOCATION_DATE));

locationDB.latitude = cursor.getDouble(cursor.getColumnIndex (KEY_LOCATION_LATITUDE));

locationDB. longitude = cursor.getDouble(cursor.getColumnIndex (KEY_LOCATION_LONGITUDE));

locations.add (locationDB);

} while(cursor.moveToNext ());

}

} catch (Exception e) {

} finally {

if (cursor!= null && !cursor.isClosed ()) {

cursor.close ();

}

}

return locations;

}

}

При превышении заранее установленного размера базы данных, она автоматически стирается и запись информации начинается заново.

После записи информации сервис LocationIntentService автоматически останавливается.