이 예시에서는 지도에서 다중선을 추가하고 구성합니다(예: 지도에서 경로를 표시하기 위해).
자세한 내용은 문서를 참고하세요.
시작하기
샘플 코드를 사용하기 전에 개발 환경을 구성해야 합니다. 자세한 내용은 Android용 Maps SDK 코드 샘플을 참고하세요.
코드 보기
Kotlin
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.polyline_demo)
hueBar = findViewById<SeekBar>(R.id.hueSeekBar).apply {
max = MAX_HUE_DEGREES
progress = 0
}
alphaBar = findViewById<SeekBar>(R.id.alphaSeekBar).apply {
max = MAX_ALPHA
progress = MAX_ALPHA
}
widthBar = findViewById<SeekBar>(R.id.widthSeekBar).apply {
max = MAX_WIDTH_PX
progress = MAX_WIDTH_PX / 2
}
startCapSpinner = findViewById<Spinner>(R.id.startCapSpinner).apply {
adapter = ArrayAdapter(this@PolylineDemoActivity,
android.R.layout.simple_spinner_item,
getResourceStrings(capTypeNameResourceIds))
}
endCapSpinner = findViewById<Spinner>(R.id.endCapSpinner).apply {
adapter = ArrayAdapter(this@PolylineDemoActivity,
android.R.layout.simple_spinner_item,
getResourceStrings(capTypeNameResourceIds))
}
jointTypeSpinner = findViewById<Spinner>(R.id.jointTypeSpinner).apply {
adapter = ArrayAdapter(this@PolylineDemoActivity,
android.R.layout.simple_spinner_item,
getResourceStrings(jointTypeNameResourceIds))
}
patternSpinner = findViewById<Spinner>(R.id.patternSpinner).apply {
adapter = ArrayAdapter(
this@PolylineDemoActivity, android.R.layout.simple_spinner_item,
getResourceStrings(patternTypeNameResourceIds))
}
clickabilityCheckbox = findViewById<CheckBox>(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 polyline's color.
setOnPolylineClickListener { polyline ->
// Flip the values of the red, green and blue components of the polyline's 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 -> mutablePolyline.isClickable = (view as CheckBox).isChecked
}
}
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 List<PatternItem> PATTERN_DOTTED = Arrays.asList(DOT, GAP);
private static final List<PatternItem> PATTERN_DASHED = Arrays.asList(DASH, GAP);
private static final List<PatternItem> 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 polyline's color.
map.setOnPolylineClickListener(new GoogleMap.OnPolylineClickListener() {
@Override
public void onPolylineClick(Polyline polyline) {
// Flip the values of the red, green and blue components of the polyline's color.
polyline.setColor(polyline.getColor() ^ 0x00ffffff);
}
});
}
}
샘플 클론 및 실행
이 샘플을 로컬로 실행하려면 Git가 필요합니다. 다음 명령어는 샘플 애플리케이션 저장소를 클론합니다.
git clone git@github.com:googlemaps-samples/android-samples.git
샘플 프로젝트를 Android 스튜디오로 가져옵니다.
- Android 스튜디오에서 File > New > Import Project를 선택합니다.
저장소를 저장한 위치로 이동하여 Kotlin 또는 Java를 위한 프로젝트 디렉터리를 선택합니다.
- Kotlin:
PATH-REPO/android-samples/ApiDemos/kotlin - Java:
PATH-REPO/android-samples/ApiDemos/java
- Kotlin:
- 열기를 선택합니다. Android 스튜디오에서 Gradle 빌드 도구를 사용하여 프로젝트를 빌드합니다.
- 프로젝트의
local.properties파일과 동일한 디렉터리에서 빈secrets.properties파일을 만듭니다. 자세한 내용은 프로젝트에 직접 생성한 API 키 추가하기를 참고하세요. 다음 문자열을
secrets.properties에 추가합니다(YOUR_API_KEY는 API 키의 값으로 변경).MAPS_API_KEY=YOUR_API_KEY- 앱을 실행합니다.