Google Map V2 not working for me . Any sample?

问题

I have used many samples of Google map V2, and i have followed all the things which are necessary for this. But still having problem, only map view is showing and my current location is not being displayed on my emulator.

I have already created my system MD 5 key and API key from API console and used the SHA 1 key in manifest. But still having problem.

So please help me.

My Source Code :

MainActivity.java

package com.googlev2.android;

import android.os.Bundle;
import android.app.Activity;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;

import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;

public class MainActivity extends FragmentActivity {

private GoogleMap mMap;

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

    SupportMapFragment fm = (SupportMapFragment)getSupportFragmentManager().
            findFragmentById(R.id.map);
    mMap = fm.getMap();

    mMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);

    final LatLng CIU = new LatLng(35.21843892856462, 33.41662287712097);
    Marker ciu = mMap.addMarker(new MarkerOptions().position(CIU).title("My Office"));

   }

@Override
public boolean onCreateOptionsMenu(Menu menu)
    {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
    }

  }

And 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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >

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

<fragment
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    />


 </RelativeLayout>

And AndroidManifest.xml :

  <?xml version="1.0" encoding="utf-8"?>
  <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.googlev2.android"
    android:versionCode="1"
     android:versionName="1.0" >

   <uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>


    <permission 
    android:name="com.googlev2.android.permission.MAPS_RECEIVE" 
    android:protectionLevel="signature">
    </permission>

    <uses-permission 
    android:name="com.googlev2.android.permission.MAPS_RECEIVE"/>


<uses-feature
    android:glEsVersion="0x00020000"
    android:required="true"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
      <!-- <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="AIzaSyDciL7-T3BphxGv2q-A77vNrcyJQ_sTrgI"/> -->

    <activity
        android:name="com.googlev2.android.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="AIzaSyBDUb-4cOSTeeH3XqVQHwzXL2bT0aAM2h8"/>

        -->

         <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="AIzaSyDiLovJFMLKEZkI5Ijtl0fKA-qApScD_Pk"/>


  </application>

</manifest>

回答1:

If your manifest file is correct Try this man

activity_main.xml

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

<fragment
    android:name="com.google.android.gms.maps.SupportMapFragment"
    xmlns:map="http://schemas.android.com/apk/res-auto"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    map:cameraTargetLat="33.41662287712097"
    map:cameraTargetLng="35.21843892856462"
    map:cameraZoom="4"/>

</LinearLayout>

In MainActivity.java onCreate()

public class MainActivity extends FragmentActivity  {

private GoogleMap mMap;

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
    GoogleMap mMap = mapFragment.getMap();

    mMap.addMarker(new MarkerOptions()
    .position(new LatLng(35.21843892856462, 33.41662287712097))
    .title("My Office"));

}

Here is the result on my phone

回答2:

Check whether you add Activate the Google Maps Android API v2 in your Google APIs Console more details can be view in this linkHow to Integrate Google map v2

回答3:

The keys to a working Google Maps v2 are

Add the v4 Support library (for older devices) and google-play-services.jar to your project.
Import the google-play-services_lib dummy project as a dependent project. It contains the very important res/ directory with all the localized resources.
Make sure you created a keystore and key and that you are signing your APK with it. If you are using a debug keystore you need to add that to the Google API console.
Test on an Android device NOT the emulator. Google Play Services are not available on the emulator and you will not get a map. You get a white screen in the emulator IIRC.
Check that your AndroidManifest.xml has all the important entries - OpenGL 2, Meta-Key with your key, the permissions, etc.

回答4:

After your meta-data that contains the api key you need to add the following lines

<meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version"/>

I suggest you to prove the genymotion emulator that is 20x times better than the default one. Here you can find the instructions to set it correctly:

How do you install Google frameworks (Play, Accounts, etc.) on a Genymotion virtual device?

来源：https://stackoverflow.com/questions/16535136/google-map-v2-not-working-for-me-any-sample

标签

android

android-maps-v2