android - 无法在我的 Android 应用程序中查看 Google map

Question

我正在尝试在 Android 应用程序中使用 Google map ，但在运行该应用程序时我无法看到 map 。我唯一能看到的是带有 zoomin - zoomoout 标志的空白 View 。我尝试了很多 stackoverflow 解决方案，但无法通过。请帮我摆脱这个。非常感谢。

我点击此链接获取 Google map key -

https://developers.google.com/maps/documentation/android/start#installing_the_google_maps_android_v2_api

我的Apps Manifest.xml如下——

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

   <uses-sdk
    android:minSdkVersion="11"
    android:targetSdkVersion="19" />
   <uses-feature
    android:glEsVersion="0x00020000"
    android:required="true" />

 <uses-permission android:name="android.permission.INTERNET" />
 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />                 
 <application
    android:allowBackup="true"
    android:icon="@drawable/pin_location"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
 <activity
    android:name="com.surajkumar.myapp.MainActivity"
    android:label="@string/app_tag" >
    <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="@string/gmap_apiv2_key" />
  <meta-data
       android:name="com.google.android.gms.version"
       android:value="@integer/google_play_services_version" />
 </application>

 </manifest>

布局文件如下——

  <?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"
   android:padding="10dp"
   android:background="@color/honeydew" 
  >
<TextView 
  android:id="@+id/yourlocationtxt"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:text="Refresh to get your location"/>

<LinearLayout 
  android:id="@+id/mapsection"
  android:layout_width="match_parent"
  android:layout_height="0px"
  android:layout_weight="1"
  android:orientation="vertical"
  android:padding="4dp">

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

</LinearLayout>
<Button
  android:id="@+id/sendsms"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:text="@string/sendlocationbtntxt" 
  android:background="@drawable/button_style"/>

</LinearLayout>

Activity 代码如下——

 package com.surajkumar.myapp;

 import android.app.Activity;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;

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


  public class MainActivity extends Activity {

  private GoogleMap peoplesLocMap;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_main);
     peoplesLocMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
        .getMap();    
 }

 @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;
 }

 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
    return super.onOptionsItemSelected(item);

 }

Answer 1

你应该改变这个

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

到

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

同时添加 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />在你的 list 中