ich das gleiche für eine meiner Anwendung Hoffnung umgesetzt haben, die Ihnen helfen, ich habe dies mit Hilfe von Poly-Linie durchgeführt und Polygon.
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<fragment
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment" />
<View
android:id="@+id/drawer_view"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
<Button
android:id="@+id/draw_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="drawZone"
android:padding="10dp"
android:text="Draw" />
</RelativeLayout>
</RelativeLayout>
Die folgende Klasse wird den vollständigen Code deckt benutzerdefinierte Region in Google map v2 ziehen
MainActivity.java
import java.util.ArrayList;
import android.graphics.Color;
import android.graphics.Point;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.PolygonOptions;
import com.google.android.gms.maps.model.PolylineOptions;
public class MainActivity extends FragmentActivity implements OnTouchListener {
private static final String TAG = "polygon";
private GoogleMap mGoogleMap;
private View mMapShelterView;
private GestureDetector mGestureDetector;
private ArrayList<LatLng> mLatlngs = new ArrayList<LatLng>();
private PolylineOptions mPolylineOptions;
private PolygonOptions mPolygonOptions;
// flag to differentiate whether user is touching to draw or not
private boolean mDrawFinished = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mMapShelterView = (View) findViewById(R.id.drawer_view);
mGestureDetector = new GestureDetector(this, new GestureListener());
mMapShelterView.setOnTouchListener(this);
initilizeMap();
}
private final class GestureListener extends SimpleOnGestureListener {
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
return false;
}
}
/**
* Ontouch event will draw poly line along the touch points
*
*/
@Override
public boolean onTouch(View v, MotionEvent event) {
int X1 = (int) event.getX();
int Y1 = (int) event.getY();
Point point = new Point();
point.x = X1;
point.y = Y1;
LatLng firstGeoPoint = mGoogleMap.getProjection().fromScreenLocation(
point);
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
if (mDrawFinished) {
X1 = (int) event.getX();
Y1 = (int) event.getY();
point = new Point();
point.x = X1;
point.y = Y1;
LatLng geoPoint = mGoogleMap.getProjection()
.fromScreenLocation(point);
mLatlngs.add(geoPoint);
mPolylineOptions = new PolylineOptions();
mPolylineOptions.color(Color.RED);
mPolylineOptions.width(3);
mPolylineOptions.addAll(mLatlngs);
mGoogleMap.addPolyline(mPolylineOptions);
}
break;
case MotionEvent.ACTION_UP:
Log.d(TAG, "Poinnts array size " + mLatlngs.size());
mLatlngs.add(firstGeoPoint);
mGoogleMap.clear();
mPolylineOptions = null;
mMapShelterView.setVisibility(View.GONE);
mGoogleMap.getUiSettings().setZoomGesturesEnabled(true);
mGoogleMap.getUiSettings().setAllGesturesEnabled(true);
mPolygonOptions = new PolygonOptions();
mPolygonOptions.fillColor(Color.GRAY);
mPolygonOptions.strokeColor(Color.RED);
mPolygonOptions.strokeWidth(5);
mPolygonOptions.addAll(mLatlngs);
mGoogleMap.addPolygon(mPolygonOptions);
mDrawFinished = false;
break;
}
return mGestureDetector.onTouchEvent(event);
}
/**
* Setting up map
*
*/
private void initilizeMap() {
int status = GooglePlayServicesUtil
.isGooglePlayServicesAvailable(getApplicationContext());
if (status == ConnectionResult.SUCCESS) {
if (mGoogleMap == null) {
mGoogleMap = ((SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map)).getMap();
mGoogleMap.setMyLocationEnabled(true);
}
} else if (GooglePlayServicesUtil.isUserRecoverableError(status)) {
// showErrorDialog(status);
} else {
Toast.makeText(this, "No Support for Google Play Service",
Toast.LENGTH_LONG).show();
}
}
/**
* Method gets called on tap of draw button, It prepares the screen to draw
* the polygon
*
* @param view
*/
public void drawZone(View view) {
mGoogleMap.clear();
mLatlngs.clear();
mPolylineOptions = null;
mPolygonOptions = null;
mDrawFinished = true;
mMapShelterView.setVisibility(View.VISIBLE);
mGoogleMap.getUiSettings().setScrollGesturesEnabled(false);
}
}
Hoffentlich wird der obige Code hübsch genug ist benutzerdefinierte Region in der Karte v2 zu ziehen. zum Erfassen, ob der jeweilige Punkt innerhalb der benutzerdefinierten Region ist oder nicht können wir die folgenden Schnipsel verwenden,
public synchronized boolean Contains(Location location) {
boolean isInside = false;
if (mLatlngs.size() > 0) {
LatLng lastPoint = mLatlngs.get(mLatlngs.size() - 1);
double x = location.getLongitude();
for (LatLng point : mLatlngs) {
double x1 = lastPoint.longitude;
double x2 = point.longitude;
double dx = x2 - x1;
if (Math.abs(dx) > 180.0) {
if (x > 0) {
while (x1 < 0)
x1 += 360;
while (x2 < 0)
x2 += 360;
} else {
while (x1 > 0)
x1 -= 360;
while (x2 > 0)
x2 -= 360;
}
dx = x2 - x1;
}
if ((x1 <= x && x2 > x) || (x1 >= x && x2 < x)) {
double grad = (point.latitude - lastPoint.latitude)/dx;
double intersectAtLat = lastPoint.latitude
+ ((x - x1) * grad);
if (intersectAtLat > location.getLatitude())
isInside = !isInside;
}
lastPoint = point;
}
}
return isInside;
}
Sie den Speicherort Parameter an die Methode übergeben kann, ist es, dass, ob der Standort befindet sich innerhalb der benutzerdefinierten Region zurückkehren oder nicht.
Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.testdraw"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<permission
android:name=".permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="in.wptrafficanalyzer.locationingooglemapv2.permission.MAPS_RECEIVE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyDkYvXC1pmSiBrt5Ja3F6gk-wBwIMuDNwo" />
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
</application>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
</manifest>
ok werden versuchen dies. und komm zurück mit dem Feedback – Balu
hast du es versucht? –
Noch nicht, aber ich werde mit dem Feedback zurück sein, sobald es fertig ist. – Balu