यह उदाहरण मैप पर पॉलीलाइन जोड़ता और कॉन्फ़िगर करता है, जैसे कि मैप पर दिशा-निर्देश वाला रास्ता.
ज़्यादा जानकारी के लिए, दस्तावेज़ देखें.
अपनी प्रोफ़ाइल बनाना शुरू करें
सैंपल कोड का इस्तेमाल करने से पहले, आपको अपना डेवलपमेंट एनवायरमेंट कॉन्फ़िगर करना होगा. ज़्यादा जानकारी के लिए, Android कोड सैंपल के लिए Maps SDK टूल देखें.
कोड देखें
Kotlin
override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.polyline_demo) hueBar = findViewByIdSe<ekBar(R>.id.hueSeekBar).apply { max = MAX_HUE_DEGREES progress = 0 } alphaBar = findViewByIdSe<ekBar(R>.id.alphaSeekBar).apply { max = MAX_ALPHA progress = MAX_ALPHA } widthBar = findViewByIdSe<ekBar(R>.id.widthSeekBar).apply { max = MAX_WIDTH_PX progress = MAX_WIDTH_PX / 2 } startCapSpinner = findViewByIdSp<inner(R>.id.startCapSpinner).apply { adapter = ArrayAdapter(this@PolylineDemoActivity, android.R.layout.simple_spinner_item, getResourceStrings(capTypeNameResourceIds)) } endCapSpinner = findViewByIdSp<inner(R>.id.endCapSpinner).apply { adapter = ArrayAdapter(this@PolylineDemoActivity, android.R.layout.simple_spinner_item, getResourceStrings(capTypeNameResourceIds)) } jointTypeSpinner = findViewByIdSp<inner(R>.id.jointTypeSpinner).apply { adapter = ArrayAdapter(this@PolylineDemoActivity, android.R.layout.simple_spinner_item, getResourceStrings(jointTypeNameResourceIds)) } patternSpinner = findViewByIdSp<inner(R>.id.patternSpinner).apply { adapter = ArrayAdapter( this@PolylineDemoActivity, android.R.layout.simple_spinner_item, getResourceStrings(patternTypeNameResourceIds)) } clickabilityCheckbox = findViewByIdCh<eckBox(R>.id.toggleClickability) val mapFragment = supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment mapFragment.getMapAsync(this) } override fun onMapReady(googleMap: GoogleMap) { googleMap with(googleMap) { // Override the default content description on the view, for accessibility mode. setContentDescription(getString(R.string.polyline_demo_description)) // A geodesic polyline that goes around the world. addPolyline(PolylineOptions().apply { add(lhrLatLng, aklLatLng, laxLatLng, jfkLatLng, lhrLatLng) width(INITIAL_STROKE_WIDTH_PX.toFloat()) color(Color.BLUE) geodesic(true) clickable(clickabilityCheckbox.isChecked) }) // Move the googleMap so that it is centered on the mutable polyline. moveCamera(CameraUpdateFactory.newLatLngZoom(melbourneLatLng, 3f)) // Add a listener for polyline clicks that changes the clicked polylines 'color. setOnPolylineClickListener { polyline - > // Flip the values of the red, green and blue components of the polylines 'color. polyline.color = polyline.color xor 0x00ffffff } } // A simple polyline across Australia. This polyline will be mutable. mutablePolyline = googleMap.addPolyline(PolylineOptions().apply{ color(Color.HSVToColor( alphaBar.progress, floatArrayOf(hueBar.progress.toFloat(), 1f, 1f))) width(widthBar.progress.toFloat()) clickable(clickabilityCheckbox.isChecked) add(melbourneLatLng, adelaideLatLng, perthLatLng, darwinLatLng) }) arrayOf(hueBar, alphaBar, widthBar).map { it.setOnSeekBarChangeListener(this) } arrayOf(startCapSpinner, endCapSpinner, jointTypeSpinner, patternSpinner).map { it.onItemSelectedListener = this } with(mutablePolyline) { startCap = getSelectedCap(startCapSpinner.selectedItemPosition) ?: ButtCap() endCap = getSelectedCap(endCapSpinner.selectedItemPosition) ?: ButtCap() jointType = getSelectedJointType(jointTypeSpinner.selectedItemPosition) pattern = getSelectedPattern(patternSpinner.selectedItemPosition) } clickabilityCheckbox.setOnClickListener { view - m>utablePolyline.isClickable = (view as CheckBox).isChecked } }Po
Java
public class PolylineDemoActivity extends AppCompatActivity implements OnSeekBarChangeListener, OnItemSelectedListener, OnMapReadyCallback { // City locations for mutable polyline. private static final LatLng ADELAIDE = new LatLng(-34.92873, 138.59995); private static final LatLng DARWIN = new LatLng(-12.4258647, 130.7932231); private static final LatLng MELBOURNE = new LatLng(-37.81319, 144.96298); private static final LatLng PERTH = new LatLng(-31.95285, 115.85734); // Airport locations for geodesic polyline. private static final LatLng AKL = new LatLng(-37.006254, 174.783018); private static final LatLng JFK = new LatLng(40.641051, -73.777485); private static final LatLng LAX = new LatLng(33.936524, -118.377686); private static final LatLng LHR = new LatLng(51.471547, -0.460052); private static final int MAX_WIDTH_PX = 100; private static final int MAX_HUE_DEGREES = 360; private static final int MAX_ALPHA = 255; private static final int CUSTOM_CAP_IMAGE_REF_WIDTH_PX = 50; private static final int INITIAL_STROKE_WIDTH_PX = 5; private static final int PATTERN_DASH_LENGTH_PX = 50; private static final int PATTERN_GAP_LENGTH_PX = 20; private static final Dot DOT = new Dot(); private static final Dash DASH = new Dash(PATTERN_DASH_LENGTH_PX); private static final Gap GAP = new Gap(PATTERN_GAP_LENGTH_PX); private static final ListP<atternItem >PATTERN_DOTTED = Arrays.asList(DOT, GAP); private static final ListP<atternItem >PATTERN_DASHED = Arrays.asList(DASH, GAP); private static final ListP<atternItem >PATTERN_MIXED = Arrays.asList(DOT, GAP, DOT, DASH, GAP); private Polyline mutablePolyline; private SeekBar hueBar; private SeekBar alphaBar; private SeekBar widthBar; private Spinner startCapSpinner; private Spinner endCapSpinner; private Spinner jointTypeSpinner; private Spinner patternSpinner; private CheckBox clickabilityCheckbox; // These are the options for polyline caps, joints and patterns. We use their // string resource IDs as identifiers. private static final int[] CAP_TYPE_NAME_RESOURCE_IDS = { R.string.cap_butt, // Default R.string.cap_round, R.string.cap_square, R.string.cap_image, }; private static final int[] JOINT_TYPE_NAME_RESOURCE_IDS = { R.string.joint_type_default, // Default R.string.joint_type_bevel, R.string.joint_type_round, }; private static final int[] PATTERN_TYPE_NAME_RESOURCE_IDS = { R.string.pattern_solid, // Default R.string.pattern_dashed, R.string.pattern_dotted, R.string.pattern_mixed, }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.polyline_demo); hueBar = findViewById(R.id.hueSeekBar); hueBar.setMax(MAX_HUE_DEGREES); hueBar.setProgress(0); alphaBar = findViewById(R.id.alphaSeekBar); alphaBar.setMax(MAX_ALPHA); alphaBar.setProgress(MAX_ALPHA); widthBar = findViewById(R.id.widthSeekBar); widthBar.setMax(MAX_WIDTH_PX); widthBar.setProgress(MAX_WIDTH_PX / 2); startCapSpinner = findViewById(R.id.startCapSpinner); startCapSpinner.setAdapter(new ArrayAdapter(<> this, android.R.layout.simple_spinner_item, getResourceStrings(CAP_TYPE_NAME_RESOURCE_IDS))); endCapSpinner = findViewById(R.id.endCapSpinner); endCapSpinner.setAdapter(new ArrayAdapter(<> this, android.R.layout.simple_spinner_item, getResourceStrings(CAP_TYPE_NAME_RESOURCE_IDS))); jointTypeSpinner = findViewById(R.id.jointTypeSpinner); jointTypeSpinner.setAdapter(new ArrayAdapter(<> this, android.R.layout.simple_spinner_item, getResourceStrings(JOINT_TYPE_NAME_RESOURCE_IDS))); patternSpinner = findViewById(R.id.patternSpinner); patternSpinner.setAdapter(new ArrayAdapter(<> this, android.R.layout.simple_spinner_item, getResourceStrings(PATTERN_TYPE_NAME_RESOURCE_IDS))); clickabilityCheckbox = findViewById(R.id.toggleClickability); SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map); mapFragment.getMapAsync(this); } @Override public void onMapReady(GoogleMap map) { // Override the default content description on the view, for accessibility mode. map.setContentDescription(getString(R.string.polyline_demo_description)); // A geodesic polyline that goes around the world. map.addPolyline(new PolylineOptions() .add(LHR, AKL, LAX, JFK, LHR) .width(INITIAL_STROKE_WIDTH_PX) .color(Color.BLUE) .geodesic(true) .clickable(clickabilityCheckbox.isChecked())); // A simple polyline across Australia. This polyline will be mutable. int color = Color.HSVToColor( alphaBar.getProgress(), new float[]{hueBar.getProgress(), 1, 1}); mutablePolyline = map.addPolyline(new PolylineOptions() .color(color) .width(widthBar.getProgress()) .clickable(clickabilityCheckbox.isChecked()) .add(MELBOURNE, ADELAIDE, PERTH, DARWIN)); hueBar.setOnSeekBarChangeListener(this); alphaBar.setOnSeekBarChangeListener(this); widthBar.setOnSeekBarChangeListener(this); startCapSpinner.setOnItemSelectedListener(this); endCapSpinner.setOnItemSelectedListener(this); jointTypeSpinner.setOnItemSelectedListener(this); patternSpinner.setOnItemSelectedListener(this); mutablePolyline.setStartCap(getSelectedCap(startCapSpinner.getSelectedItemPosition())); mutablePolyline.setEndCap(getSelectedCap(endCapSpinner.getSelectedItemPosition())); mutablePolyline.setJointType(getSelectedJointType(jointTypeSpinner.getSelectedItemPosition())); mutablePolyline.setPattern(getSelectedPattern(patternSpinner.getSelectedItemPosition())); // Move the map so that it is centered on the mutable polyline. map.moveCamera(CameraUpdateFactory.newLatLngZoom(MELBOURNE, 3)); // Add a listener for polyline clicks that changes the clicked polylines' color. map.setOnPolylineClickListener(new GoogleMap.OnPolylineClickListener() { @Override public void onPolylineClick(Polyline polyline) { // Flip the values of the red, green and blue components of the polylines' color. polyline.setColor(polyline.getColor() ^ 0x00ffffff); } }); } }P
सैंपल का क्लोन बनाएं और चलाएं
इस सैंपल को स्थानीय तौर पर चलाने के लिए Git ज़रूरी है. नीचे दिया गया कमांड, सैंपल का क्लोन बनाता है ऐप्लिकेशन रिपॉज़िटरी (डेटा स्टोर करने की जगह) की जानकारी देता है.
git clone git@github.com:googlemaps-samples/android-samples.git
सैंपल प्रोजेक्ट को Android Studio में इंपोर्ट करें:
- Android Studio में, फ़ाइल > नया > प्रोजेक्ट इंपोर्ट करें.
उस लोकेशन पर जाएं जहां आपने रिपॉज़िटरी सेव की है. इसके बाद, Kotlin या Java:
- Kotlin:
PATH-REPO/android-samples/ApiDemos/kotlin
- Java:
PATH-REPO/android-samples/ApiDemos/java
- Kotlin:
- खोलें को चुनें. Android Studio, Gradle बिल्ड का इस्तेमाल करके आपका प्रोजेक्ट बनाता है टूल.
- आपके प्रोजेक्ट की
local.properties
फ़ाइल वाली डायरेक्ट्री में, एक खालीsecrets.properties
फ़ाइल बनाएं. ज़्यादा जानकारी के लिए, प्रोजेक्ट में अपनी एपीआई कुंजी जोड़ना देखें. YOUR_API_KEY को इसके मान से बदलकर
secrets.properties
में नीचे दी गई स्ट्रिंग जोड़ें आपकी एपीआई कुंजी:MAPS_API_KEY=YOUR_API_KEY
- ऐप्लिकेशन चलाएं.