Question

I don’t know what my problem is, the Google map is not showing

I have change the project property to Google API 2.3.3 and no errors are displaying

here’s my code:

Mapping.java

package com.mapping;

import java.io.IOException;
import java.util.List;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;

import android.location.Address;
import android.location.Geocoder;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.EditText;

public class Mapping extends MapActivity {

    private MapView mapView = null;
    private Geocoder geoCoder = null;


    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

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

        // latitude and longitude of Dallas, TX
        // set as starting point 
        int lat = (int)(37.422006 * 1000000); //the geocoder requires integers...
        int lon = (int)(-122.084095 * 1000000);
        //make these into a GeoPoint:
        GeoPoint startPoint = new GeoPoint(lat, lon);
        mapView.getController().setZoom(12);
        mapView.getController().setCenter(startPoint);

        geoCoder = new Geocoder(this);
    }

    public void mapHandler(View v) {
        switch(v.getId()) {
        case R.id.btnSat:
            mapView.setSatellite(true);
            break;
        case R.id.btnTraf:
            mapView.setTraffic(true);
            break;
        case R.id.btnNorm:
            mapView.setSatellite(false);
            mapView.setTraffic(false);
            break;          
        }
    }

    public void geocode(View v) {
        EditText geoLocation = (EditText) findViewById(R.id.txtLocation);
        if(Geocoder.isPresent()) {
            try {
                String addr = geoLocation.getText().toString();

                List<Address> locationList = geoCoder.getFromLocationName(addr, 5);
                if(locationList != null && locationList.size() > 0) {
                    int lat = (int)(locationList.get(0).getLatitude() * 1000000);
                    int lon = (int)(locationList.get(0).getLongitude() * 1000000);

                    GeoPoint setPoint = new GeoPoint(lat, lon);
                    mapView.getController().setZoom(14);
                    mapView.getController().setCenter(setPoint);
                }
            } catch (IOException error) {
                Log.i("Caught IOException", "-----Printing Stack Trace-----");
                error.printStackTrace();
            }
        } else {
            geoLocation.setText("No Geocoder Available");
        }
    }

    protected boolean isLocationDisplayed() {
        return false;
    }

    protected boolean isRouteDisplayed() {
        return false;
    }
}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />

    <LinearLayout 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/btnSat" 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Satellite"
            android:onClick="mapHandler" />

        <Button 
            android:id="@+id/btnTraf"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Traffic"
            android:onClick="mapHandler" />

        <Button 
            android:id="@+id/btnNorm"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Normal"
            android:onClick="mapHandler" />

    </LinearLayout>

    <LinearLayout 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <EditText
            android:id="@+id/txtLocation"
            android:layout_width="200sp"
            android:layout_height="wrap_content"
            android:text="Dallas" />

        <Button 
            android:id="@+id/btnGeocode"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Find Location"
            android:onClick="geocode" />

    </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="0G_pKeFNWX5lw7PQ7AzKnl2XbRs7bHZ3p6ECosQ" />
</LinearLayout>

AndroidManifest.xml

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

    <uses-sdk android:minSdkVersion="10" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >

        <activity
            android:label="@string/app_name"
            android:name=".Mapping" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <uses-library android:name="com.google.android.maps" />
    </application>

</manifest>

Can anyone help me? I’ve pulling my hair all day. The program is running okay, as you can see I was able to take a screen shot so it must be the connection of the device to the Google API. I can’t seem to find the error…

Answer 1

Don’t use existing map api key or anything else. You have to generate your own map api key with your md5 fingerprint code. Just have a look at below links –

1. Android Map api key

2. maps-api-signup

Have a look at existing answer. And, here is a best example for generating map api key with step-by-step. These may helps you surely.