Blank Screen Android 2.2 Google Maps v2

问题

EDIT :

I transferred my 20+ projects that tries to use Google Maps for Android v2. After changing keys and stuff, now, it works. I don't know what made this work, but thank you all. I got one keystore, the key is right. I guess it magically fixed somehow. Well, thanks guys.

I'm doing searches for 2 days and I couldn't fix this problem. I did everything, yet, this application can not work.

I want my application to work on Android 2.2 and above. Like it says "if you create your app in level 8, it'll support 95% of market".

Here are my screenshots and source codes:

I'm pasting the source code which is the easiest to get. I took this from web.

Here's the output of the command

keytool -list -keystore <path>

*****************  WARNING WARNING WARNING  *****************
* The integrity of the information stored in your keystore  *
* has NOT been verified!  In order to verify its integrity, *
* you must provide your keystore password.                  *
*****************  WARNING WARNING WARNING  *****************

Keystore type: JKS Keystore provider: SUN

Your keystore contains 1 entry

androiddebugkey, 15.Mar.2013, PrivateKeyEntry,
Certificate fingerprint (SHA1): xxx

main.xml file:

<?xml version="1.0" encoding="utf-8"?>
<com.google.android.maps.MapView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mapView"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:clickable="true"
    android:apiKey="AIzaSyDim-x5Gxxx"
/>

manifest file:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.androidhive.googlemaps"
    android:versionCode="1"
    android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <!-- Add Google Map Library -->
        <uses-library android:name="com.google.android.maps" />
        <activity
            android:name=".AndroidGoogleMapsActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <!-- Allow to connect with internet -->
    <uses-permission android:name="android.permission.INTERNET" />
</manifest>

java file (no need to paste it all, but I guess it's best to paste it all)

http://pastebin.com/yF95Rcbd

Here are my screenshots:

http://i.imgur.com/gExHpUG.png

http://i.imgur.com/AMOXKhr.png

http://i.imgur.com/Aqon97Y.png

I'm trying to compile this app to Android 4.2.2, but I tried and want to make it work in 2.2 and above.

Here's the Android tab of the properties window just to make sure:

http://i.imgur.com/ht0CQwT.png

Here's my log

03-20 07:01:20.145: W/System.err(956):  at java.lang.Thread.run(Thread.java:856)
03-20 07:01:20.665: W/System.err(956): IOException processing: 26
03-20 07:01:20.665: W/System.err(956): java.io.IOException: Server returned: 3
03-20 07:01:20.665: W/System.err(956):  at android_maps_conflict_avoidance.com.google.googlenav.map.BaseTileRequest.readResponseData(BaseTileRequest.java:115)
03-20 07:01:20.675: W/System.err(956):  at android_maps_conflict_avoidance.com.google.googlenav.map.MapService$MapTileRequest.readResponseData(MapService.java:1473)
03-20 07:01:20.675: W/System.err(956):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher.processDataRequest(DataRequestDispatcher.java:1117)
03-20 07:01:20.675: W/System.err(956):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher.serviceRequests(DataRequestDispatcher.java:994)
03-20 07:01:20.675: W/System.err(956):  at android_maps_conflict_avoidance.com.google.googlenav.datarequest.DataRequestDispatcher$DispatcherServer.run(DataRequestDispatcher.java:1702)

These lines repeat all the time.

Thank you very much. Your post appears to contain code that is not properly formatted as code" error made me delete the blank lines. Sorry for the messed up codes.

回答1:

http://i.imgur.com/ht0CQwT.png See the snapshot. You did not add Google Play Services library that is require for displaying Google Android Map V2. Please download and add that library and then try again.

Please also see the target. Your target is 4.2.2 and your are accessing it on 2.2. Change the target to 2.2 and use support fragment.

Thanks,

回答2:

I have solved this issue,

Open your Google APIs Console
Choose API Access
Edit allowed Android apps from your API Key
Change the package name with your package name
Example: 00:06:A5:0E:04:A2:1E:8F:FE:6B:7F:46:23:C3:xx:xx:xx:xx:xx:xx;com.example.androidmapview

回答3:

You are missing permissions and meta-data for API KEY.

Read this carefully: https://developers.google.com/maps/documentation/android/start

回答4:

Working with android mapapi v2 ,the main reason is you must add play service to your app,like below :

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

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

Use fragment class in Layout:

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:map="http://schemas.android.com/apk/res-auto"
  android:id="@+id/map"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
 class="com.google.android.gms.maps.SupportMapFragment"/>

And change your manifest:

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

   <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />

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

    <uses-permission android:name="com.example.androidmapview.permission.MAPS_RECEIVE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <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" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.androidmapview.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="AIzxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"></meta-data>
    </application>

    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true" />
</manifest>

in activity:

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;

import com.google.android.gms.maps.SupportMapFragment;

public class MainActivity extends FragmentActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        SupportMapFragment fragment = new SupportMapFragment();
        getSupportFragmentManager().beginTransaction()
                .add(android.R.id.content, fragment).commit();
    }
}

For more info check the link which will explain you in details about api v2