Street view map pinch zoom : Map « Core Class « Android

1. Android
2. Core Class
3. Map

Street view map pinch zoom

   


package app.test;

import android.os.Bundle;
import android.view.View;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;

import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.util.FloatMath;
import android.util.Log;
import android.view.MotionEvent;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;

 class ClickReceiver extends Overlay {
  private static final float ZOOMJUMP = 75f;
  private Context mContext;
  private boolean inZoomMode = false;
  private boolean ignoreLastFinger = false;
  private float mOrigSeparation;

  public ClickReceiver(Context context) {
        mContext = context;
  }

  @Override
  public boolean onTap(GeoPoint p, MapView mapView) {
    if(mapView.isStreetView()) {
            Intent myIntent = new Intent(Intent.ACTION_VIEW, Uri.parse
            ("google.streetview:cbll=" +
            (float)p.getLatitudeE6() / 1000000f +
            "," + (float)p.getLongitudeE6() / 1000000f
              +"&cbp=1,180,,0,1.0"
                ));
        mContext.startActivity(myIntent);
        return true;
    }
      return false;
  }
  
  public boolean onTouchEvent(MotionEvent e, MapView mapView) {
      int action = e.getAction() & MotionEvent.ACTION_MASK;

      if(e.getPointerCount() == 2) {
          inZoomMode = true;
        }
        else {
          inZoomMode = false;
        }
        
        if(inZoomMode) {
          switch(action) {
          case MotionEvent.ACTION_POINTER_DOWN:
            mOrigSeparation = calculateSeparation(e);
            break;
          case MotionEvent.ACTION_POINTER_UP:
            ignoreLastFinger  = true;
            break;
          case MotionEvent.ACTION_MOVE:
            float newSeparation = calculateSeparation(e);
            if(newSeparation - mOrigSeparation > ZOOMJUMP) {
              mapView.getController().zoomIn();
              mOrigSeparation = newSeparation;
            }
            else if (mOrigSeparation - newSeparation > ZOOMJUMP) {
              mapView.getController().zoomOut();
              mOrigSeparation = newSeparation;
            }
            break;
          }
          return true;
        }
        if(ignoreLastFinger) {
            if(action == MotionEvent.ACTION_UP)
              ignoreLastFinger = false;
          return true;
        }
    return super.onTouchEvent(e, mapView);
  }
  private float calculateSeparation(MotionEvent e) {
    float x = e.getX(0) - e.getX(1);
    float y = e.getY(0) - e.getY(1);
    return FloatMath.sqrt(x * x + y * y);
  }
}

public class MainActivity extends MapActivity
{
  private MapView mapView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        mapView = (MapView)findViewById(R.id.mapview);

        ClickReceiver clickRecvr = new ClickReceiver(this);
        mapView.getOverlays().add(clickRecvr);
        mapView.invalidate();
    }

    public void myClickHandler(View target) {
        switch(target.getId()) {
        case R.id.zoomin:
          mapView.getController().zoomIn();
          break;
        case R.id.zoomout:
          mapView.getController().zoomOut();
          break;
        case R.id.sat:
          mapView.setSatellite(true);
          break;
        case R.id.street:
          mapView.setStreetView(true);
          break;
        case R.id.traffic:
          mapView.setTraffic(true);
          break;
        case R.id.normal:
          mapView.setSatellite(false);
          mapView.setStreetView(false);
          mapView.setTraffic(false);
          break;
        }
        mapView.postInvalidateDelayed(2000);
    }

    @Override
    protected boolean isLocationDisplayed() {
        return false;
    }

    @Override
    protected boolean isRouteDisplayed() {
        return false;
    }
}
<?xml version="1.0" encoding="utf-8"?>
<!-- This file is /res/layout/mapview.xml -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="fill_parent"
android:layout_height="wrap_content">

<Button android:id="@+id/zoomin" android:layout_width="wrap_content"
  android:layout_height="wrap_content" android:text="+"
  android:onClick="myClickHandler" android:padding="12px" />

<Button android:id="@+id/zoomout" android:layout_width="wrap_content"
  android:layout_height="wrap_content" android:text="-"
  android:onClick="myClickHandler" android:padding="12px" />

<Button android:id="@+id/sat" android:layout_width="wrap_content"
  android:layout_height="wrap_content" android:text="Satellite"
  android:onClick="myClickHandler" android:padding="8px" />

<Button android:id="@+id/street" android:layout_width="wrap_content"
  android:layout_height="wrap_content" android:text="Street"
  android:onClick="myClickHandler" android:padding="8px" />

<Button android:id="@+id/traffic" android:layout_width="wrap_content"
  android:layout_height="wrap_content" android:text="Traffic"
  android:onClick="myClickHandler" android:padding="8px" />

<Button android:id="@+id/normal" android:layout_width="wrap_content"
  android:layout_height="wrap_content" android:text="Normal"
  android:onClick="myClickHandler" android:padding="8px" />

</LinearLayout>

<com.google.android.maps.MapView
android:id="@+id/mapview" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:clickable="true"
android:apiKey="YourKey" />

</LinearLayout>

   
    
    
  

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