Android startActivity& startActivityForResult

startActivity跟startActivityForResult

Google Map Location

Android Location API - Tutorial

Android - 定位資訊(GPS)相關類別使用說明

Android 開發筆記 - 透過 Google Maps API 畫出 GPS 路徑

[Android] Google地圖標誌


Android - 定位資訊(GPS)相關類別使用說明

Stop Location Listener in Android


看了那麼多
我們來練習一下
GoogleMapTrackTest.class

package com.example.googlemaptracktest;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.MapActivity;
import com.google.android.maps.OverlayItem;
import com.google.android.maps.Projection;

import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.graphics.Path;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import android.view.Menu;
import android.widget.LinearLayout;
import android.widget.Toast;
import android.widget.ZoomControls;

public class GoogleMapTrackTest extends MapActivity {
    private MapController mapController = null;
    private MapView mMapview = null;
    private ZoomControls myZoom = null;
    private Drawable startdrawable = null;
    private Drawable enddrawable = null;
    private MapItemizedOverlay mymapoverlay = null;
    private boolean firstLocation = true;
    GeoPoint startPoint = null;

    private LocationManager mLocationManager = null;
    private String strLocationPrivider = "";
    private Location mLocation = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        MapView mapView = (MapView) findViewById(R.id.mapview);
        mapView.setBuiltInZoomControls(true);

        LinearLayout maplinearlayout;

        maplinearlayout = (LinearLayout) findViewById(R.id.zoomview);
        mMapview = (MapView) findViewById(R.id.mapview);
        myZoom = (ZoomControls) (mMapview).getZoomControls();
        mapController = mMapview.getController();
        maplinearlayout.addView(myZoom);

        startdrawable = this.getResources().getDrawable(R.drawable.b1);// 指定標誌圖示
        enddrawable = this.getResources().getDrawable(R.drawable.ic_launcher);
        mymapoverlay = new MapItemizedOverlay(startdrawable, mMapview);

        // Location
        mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        if (mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)
                || mLocationManager
                        .isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
            Criteria mCriteria01 = new Criteria();
            mCriteria01.setAccuracy(Criteria.ACCURACY_FINE);
            mCriteria01.setAltitudeRequired(false);
            mCriteria01.setBearingRequired(false);
            mCriteria01.setCostAllowed(true);
            mCriteria01.setPowerRequirement(Criteria.POWER_LOW);
            strLocationPrivider = mLocationManager.getBestProvider(mCriteria01, true);
            mLocation = mLocationManager
                    .getLastKnownLocation(strLocationPrivider);

            // Initialize the location fields
            if (mLocation != null) {
                int lat = (int) (mLocation.getLatitude());
                int lng = (int) (mLocation.getLongitude());
                Toast.makeText(GoogleMapTrackTest.this,
                        String.valueOf(lat) + "," + String.valueOf(lng),
                        Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(GoogleMapTrackTest.this,
                        "Location not available", Toast.LENGTH_SHORT).show();
                mMapview.getController().setCenter(new GeoPoint(24778289, 120988108));
                mapController.setZoom(14);
            }
        }

        // Define a listener that responds to location updates
        LocationListener locationListener = new LocationListener() {
            public void onLocationChanged(Location location) {
                // Called when a new location is found by the network location
                // provider.
                int lat = (int) (location.getLatitude() * 1e6);
                int lng = (int) (location.getLongitude() * 1e6);
                GeoPoint addPoint = new GeoPoint(lat, lng); // 指定位置

                if (firstLocation == true) {
                    Toast.makeText(GoogleMapTrackTest.this,
                            String.valueOf(lat) + "," + String.valueOf(lng),
                            Toast.LENGTH_SHORT).show();
                    firstLocation = false;
                    startPoint = addPoint;
                    // 加入經緯度
                    OverlayItem myoverlayitem = new OverlayItem(addPoint, null,    null);
                    mymapoverlay.addOverlayItem(myoverlayitem);
                    mMapview.getOverlays().add(mymapoverlay);
                    // 依照mypoint設定之經緯度為中心點

                    mymapoverlay = new MapItemizedOverlay(enddrawable, mMapview);
                    // 換圖示
                } else {
                    Toast.makeText(GoogleMapTrackTest.this,
                            String.valueOf(lat) + "," + String.valueOf(lng),
                            Toast.LENGTH_SHORT).show();
                    OverlayItem myoverlayitem = new OverlayItem(addPoint, null,    null);
                    mymapoverlay.addOverlayItem(myoverlayitem, startPoint);
                    mMapview.getOverlays().add(mymapoverlay);
                }
                mMapview.getController().setCenter(addPoint);
                mapController.setZoom(14);
            }

            public void onStatusChanged(String provider, int status,
                    Bundle extras) {
                
            }

            public void onProviderEnabled(String provider) {
                Toast.makeText(GoogleMapTrackTest.this, " onProviderEnabled ",
                        Toast.LENGTH_SHORT).show();
            }

            public void onProviderDisabled(String provider) {
                Toast.makeText(GoogleMapTrackTest.this, " onProviderDisabled ",
                        Toast.LENGTH_SHORT).show();
            }

        };

        // Register the listener with the Location Manager to receive location
        // updates
        mLocationManager.requestLocationUpdates(strLocationPrivider, 0, 0,
                locationListener);
    }

    @Override
    protected boolean isRouteDisplayed() {
        // TODO Auto-generated method stub
        return false;
    }

}

MapItemizedOverlay.class

package com.example.googlemaptracktest;

import java.util.ArrayList;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Point;
import android.graphics.drawable.Drawable;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapView;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;
import com.google.android.maps.Projection;

public class MapItemizedOverlay extends ItemizedOverlay<OverlayItem> {

    private ArrayList<OverlayItem> gList = new ArrayList<OverlayItem>();
    private ArrayList<GeoPoint> gListGeoPoint = new ArrayList<GeoPoint>();
    private Drawable marker = null;
    private Context context = null;
    private boolean firstmove = true;    
    private MapView myMapView = null;

    // Projection myProjection = null;
    // Point mapViewOut = null;

    public MapItemizedOverlay(Drawable arg0, MapView mMapview) {
        super(arg0);
        // TODO Auto-generated constructor stub
        marker = arg0;
        context = mMapview.getContext();
        myMapView = mMapview;
    }

    public void addOverlayItem(OverlayItem oItem) {
        gList.clear();
        gList.add(oItem);
        populate();
    }

    public void addOverlayItem(OverlayItem oItem, GeoPoint startPoint) {
        if (firstmove == true) {
            gListGeoPoint.add(startPoint);
            firstmove = false;
        }
        gListGeoPoint.add(oItem.getPoint());
        gList.clear();
        gList.add(oItem);
        populate();
    }

    @Override
    protected OverlayItem createItem(int arg0) {
        // TODO Auto-generated method stub
        return gList.get(arg0);
    }

    public void draw(Canvas canvas, com.google.android.maps.MapView mapview,
            boolean shadow) {
        super.draw(canvas, mapview, shadow);
        boundCenterBottom(marker);
        
         Projection myProjection = myMapView.getProjection();
         Point out;
         Path myPath = new Path(); 
         
        for (int i = 0; i < gListGeoPoint.size(); i++) {
            GeoPoint in = new GeoPoint(gListGeoPoint.get(i).getLatitudeE6(),
                    gListGeoPoint.get(i).getLongitudeE6());
            out = new Point();
            myProjection.toPixels(in, out);
            if (i == 0) {
                myPath.moveTo(out.x, out.y);
            } else {
                myPath.lineTo(out.x, out.y);
                myPath.setLastPoint(out.x, out.y);
            }
        }
         
         Paint myPaint = new Paint();
         myPaint.setColor(Color.RED);
         myPaint.setStyle(Paint.Style.STROKE);
         myPaint.setStrokeWidth(2);
         myPaint.setAlpha(70);
        
         canvas.drawPath(myPath, myPaint);
    }

    @Override
    public int size() {
        // TODO Auto-generated method stub
        return gList.size();
    }

}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.googlemaptracktest"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="8" />

    <permission
        android:name="com.example.googlemaptracktest.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />

    <uses-permission android:name="com.example.mapdemo.permission.MAPS_RECEIVE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <!--
     The following two permissions are not required to use
     Google Maps Android API v2, but are recommended.
    -->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" /> 
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <uses-library android:name="com.google.android.maps" />
        <activity
            android:name="com.example.googlemaptracktest.GoogleMapTrackTest"
            android:label="@string/app_name"  android:theme="@android:style/Theme.NoTitleBar" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/zoomview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <com.google.android.maps.MapView
        android:id="@+id/mapview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:apiKey="04PWltFqrvM9KGKh8Dvlh3hN73M_xFBck0zmI5w"
        android:clickable="true"
        android:enabled="true" 
        />

</LinearLayout>

Result:

我拿了我的實機測試
GPS抓得很慢!!!!!!
所以要等一下
僅供參考喽!

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只要在指令後方加入-v 便大功告成

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• 指定一個方向，垂直或水平，不管控制項有多大，向下向右排排站

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An Intent provides a facility for performing late runtime binding between the code in different applications. Its most significant use is in the launching of activities, where it can be thought of as the glue between activities. It is basically a passive data structure holding an abstract description of an action to be performed.

基本上 你知道Intent是什麼拉!

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