यह उदाहरण मैप पर अलग-अलग आकृतियों और रंगों के पॉलीगॉन बनाता है.
ज़्यादा जानकारी के लिए, दस्तावेज़ देखें.
अपनी प्रोफ़ाइल बनाना शुरू करें
सैंपल कोड को आज़माने 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.polygon_demo)
fillHueBar = findViewById<SeekBar>(R.id.fillHueSeekBar).apply {
max = MAX_HUE_DEGREES
progress = MAX_HUE_DEGREES / 2
}
fillAlphaBar = findViewById<SeekBar>(R.id.fillAlphaSeekBar).apply {
max = MAX_ALPHA
progress = MAX_ALPHA / 2
}
strokeWidthBar = findViewById<SeekBar>(R.id.strokeWidthSeekBar).apply {
max = MAX_WIDTH_PX
progress = MAX_WIDTH_PX / 3
}
strokeHueBar = findViewById<SeekBar>(R.id.strokeHueSeekBar).apply {
max = MAX_HUE_DEGREES
progress = 0
}
strokeAlphaBar = findViewById<SeekBar>(R.id.strokeAlphaSeekBar).apply {
max = MAX_ALPHA
progress = MAX_ALPHA
}
strokeJointTypeSpinner = findViewById<Spinner>(R.id.strokeJointTypeSpinner).apply {
adapter = ArrayAdapter(
this@PolygonDemoActivity, android.R.layout.simple_spinner_item,
getResourceStrings(jointTypeNameResourceIds))
}
strokePatternSpinner = findViewById<Spinner>(R.id.strokePatternSpinner).apply {
adapter = ArrayAdapter(
this@PolygonDemoActivity, android.R.layout.simple_spinner_item,
getResourceStrings(patternTypeNameResourceIds))
}
clickabilityCheckbox = findViewById(R.id.toggleClickability)
val mapFragment = supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment
mapFragment.getMapAsync(this)
}
override fun onMapReady(googleMap: GoogleMap) {
// return early if the map was not initialised properly
googleMap ?: return
val fillColorArgb = Color.HSVToColor(
fillAlphaBar.progress, floatArrayOf(fillHueBar.progress.toFloat(), 1f, 1f))
val strokeColorArgb = Color.HSVToColor(
strokeAlphaBar.progress, floatArrayOf(strokeHueBar.progress.toFloat(), 1f, 1f))
with(googleMap) {
// Override the default content description on the view, for accessibility mode.
setContentDescription(getString(R.string.polygon_demo_description))
// Move the googleMap so that it is centered on the mutable polygon.
moveCamera(CameraUpdateFactory.newLatLngZoom(center, 4f))
// Create a rectangle with two rectangular holes.
mutablePolygon = addPolygon(PolygonOptions().apply {
addAll(createRectangle(center, 5.0, 5.0))
addHole(createRectangle(LatLng(-22.0, 128.0), 1.0, 1.0))
addHole(createRectangle(LatLng(-18.0, 133.0), 0.5, 1.5))
fillColor(fillColorArgb)
strokeColor(strokeColorArgb)
strokeWidth(strokeWidthBar.progress.toFloat())
clickable(clickabilityCheckbox.isChecked)
})
// Add a listener for polygon clicks that changes the clicked polygon's stroke color.
setOnPolygonClickListener { polygon ->
// Flip the red, green and blue components of the polygon's stroke color.
polygon.strokeColor = polygon.strokeColor xor 0x00ffffff
}
}
// set listeners on seekBars
arrayOf(fillHueBar, fillAlphaBar, strokeWidthBar, strokeHueBar, strokeAlphaBar).map {
it.setOnSeekBarChangeListener(this)
}
// set listeners on spinners
arrayOf(strokeJointTypeSpinner, strokePatternSpinner).map {
it.onItemSelectedListener = this
}
// set line pattern and joint type based on current spinner position
with(mutablePolygon) {
strokeJointType = getSelectedJointType(strokeJointTypeSpinner.selectedItemPosition)
strokePattern = getSelectedPattern(strokePatternSpinner.selectedItemPosition)
}
}
Java
public class PolygonDemoActivity extends AppCompatActivity
implements OnSeekBarChangeListener, OnItemSelectedListener, OnMapReadyCallback {
private static final LatLng CENTER = new LatLng(-20, 130);
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 PATTERN_DASH_LENGTH_PX = 50;
private static final int PATTERN_GAP_LENGTH_PX = 10;
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 Polygon mutablePolygon;
private SeekBar fillHueBar;
private SeekBar fillAlphaBar;
private SeekBar strokeWidthBar;
private SeekBar strokeHueBar;
private SeekBar strokeAlphaBar;
private Spinner strokeJointTypeSpinner;
private Spinner strokePatternSpinner;
private CheckBox clickabilityCheckbox;
// These are the options for polygon stroke joints and patterns. We use their
// string resource IDs as identifiers.
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.polygon_demo);
fillHueBar = findViewById(R.id.fillHueSeekBar);
fillHueBar.setMax(MAX_HUE_DEGREES);
fillHueBar.setProgress(MAX_HUE_DEGREES / 2);
fillAlphaBar = findViewById(R.id.fillAlphaSeekBar);
fillAlphaBar.setMax(MAX_ALPHA);
fillAlphaBar.setProgress(MAX_ALPHA / 2);
strokeWidthBar = findViewById(R.id.strokeWidthSeekBar);
strokeWidthBar.setMax(MAX_WIDTH_PX);
strokeWidthBar.setProgress(MAX_WIDTH_PX / 3);
strokeHueBar = findViewById(R.id.strokeHueSeekBar);
strokeHueBar.setMax(MAX_HUE_DEGREES);
strokeHueBar.setProgress(0);
strokeAlphaBar = findViewById(R.id.strokeAlphaSeekBar);
strokeAlphaBar.setMax(MAX_ALPHA);
strokeAlphaBar.setProgress(MAX_ALPHA);
strokeJointTypeSpinner = findViewById(R.id.strokeJointTypeSpinner);
strokeJointTypeSpinner.setAdapter(new ArrayAdapter<>(
this, android.R.layout.simple_spinner_item,
getResourceStrings(JOINT_TYPE_NAME_RESOURCE_IDS)));
strokePatternSpinner = findViewById(R.id.strokePatternSpinner);
strokePatternSpinner.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.polygon_demo_description));
int fillColorArgb = Color.HSVToColor(
fillAlphaBar.getProgress(), new float[]{fillHueBar.getProgress(), 1, 1});
int strokeColorArgb = Color.HSVToColor(
strokeAlphaBar.getProgress(), new float[]{strokeHueBar.getProgress(), 1, 1});
// Create a rectangle with two rectangular holes.
mutablePolygon = map.addPolygon(new PolygonOptions()
.addAll(createRectangle(CENTER, 5, 5))
.addHole(createRectangle(new LatLng(-22, 128), 1, 1))
.addHole(createRectangle(new LatLng(-18, 133), 0.5, 1.5))
.fillColor(fillColorArgb)
.strokeColor(strokeColorArgb)
.strokeWidth(strokeWidthBar.getProgress())
.clickable(clickabilityCheckbox.isChecked()));
fillHueBar.setOnSeekBarChangeListener(this);
fillAlphaBar.setOnSeekBarChangeListener(this);
strokeWidthBar.setOnSeekBarChangeListener(this);
strokeHueBar.setOnSeekBarChangeListener(this);
strokeAlphaBar.setOnSeekBarChangeListener(this);
strokeJointTypeSpinner.setOnItemSelectedListener(this);
strokePatternSpinner.setOnItemSelectedListener(this);
mutablePolygon.setStrokeJointType(getSelectedJointType(strokeJointTypeSpinner.getSelectedItemPosition()));
mutablePolygon.setStrokePattern(getSelectedPattern(strokePatternSpinner.getSelectedItemPosition()));
// Move the map so that it is centered on the mutable polygon.
map.moveCamera(CameraUpdateFactory.newLatLngZoom(CENTER, 4));
// Add a listener for polygon clicks that changes the clicked polygon's stroke color.
map.setOnPolygonClickListener(new GoogleMap.OnPolygonClickListener() {
@Override
public void onPolygonClick(Polygon polygon) {
// Flip the red, green and blue components of the polygon's stroke color.
polygon.setStrokeColor(polygon.getStrokeColor() ^ 0x00ffffff);
}
});
}
}
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.propertiesफ़ाइल वाली डायरेक्ट्री में, एक खालीsecrets.propertiesफ़ाइल बनाएं. ज़्यादा जानकारी के लिए, प्रोजेक्ट में अपनी एपीआई कुंजी जोड़ना देखें. YOUR_API_KEY को इसके मान से बदलकर
secrets.propertiesमें नीचे दी गई स्ट्रिंग जोड़ें आपकी एपीआई कुंजी:MAPS_API_KEY=YOUR_API_KEY- ऐप्लिकेशन चलाएं.