Question

任何人都可以帮我解决这个问题吗？我目前正在开发一款需要谷歌地图的Android应用程序。所有的说明和程序都已完成并且工作正常但是当我现在运行它时它只显示空白和缩放。我会做什么？谢谢你提前。

This is my main activity.java >>>>>>>>>>>>>>>>>>>>>>


package com.example.lrt;

import com.google.android.gms.maps.SupportMapFragment;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;

public class Googlemapko extends FragmentActivity{

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.googlemapko);
    SupportMapFragment fragment = new SupportMapFragment();
        getSupportFragmentManager().beginTransaction().add(android.R.id.content,     fragment).commit();

}
}


This is my Layout>>>>>>>>>>>>>>>>>>>

<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:orientation="vertical"
tools:context="com.example.lrt.Googlemapko" >

<fragment
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/button1"
    class="com.google.android.gms.maps.SupportMapFragment"/>
</RelativeLayout>




MY android MAnifest >>>>>>>>>>>>>>>>

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


  <uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="19" />



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

<uses-permission android:name="com.example.lrt.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" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

 <uses-feature android:glEsVersion="0x00020000" 
    android:required="true"/>
 <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="AIzaSyB61vojABlTFrB9QTv9kXWKXPknI0iot_o" />
    <meta-data android:name="com.google.android.gms.version" 
        android:value="@integer/google_play_services_version" />


    <activity
        android:name="com.example.lrt.Googlemapko"
        android:label="@string/app_name"
         >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

Answer 1

您是否尝试运行已签名的应用程序？如果没有，你将无法连接到地图api，因此它会显示空白的碎片。

谷歌地图显示空白屏幕

1 个答案: