Question

我为地图制作了一款应用。添加了所有必要的权限并生成了api密钥，但它仍然崩溃。我正在使用命令行并在Android 4.3操作系统上实现它。

以下是代码：

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

清单文件

 <uses-sdk
    android:minSdkVersion="9"
            android:targetSdkVersion="17" />
 <uses-feature
    android:glEsVersion="0x00020000"
            android:required="true"/>

  <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"/>
  <!-- The following two permissions are not required to use
      Google Maps Android API v2, but are recommended. -->
   <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
   <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
   <permission
  android:name="mapdemo.exp.permission.MAPS_RECEIVE"
        android:protectionLevel="signature"/>
  <uses-permission android:name="mapdemo.exp.permission.MAPS_RECEIVE"/>

<application android:label="@string/app_name" android:icon="@drawable/ic_launcher">
    <activity android:name="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="AIzaSyAS08XqNbdRuxsOwNrosza0WE2mijfdoO8"/>
 <meta-data
     android:name="com.google.android.gms.version"
         android:value="4323000" />

</application>

试过这个

   public class ActivityMain extends Activity
   {
   public GoogleMap googleMap;

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

    try
      {
        Log.e("loading map. . . .", "loading map. . . ");
        initilizeMap();
      }  
        catch (Exception e)
        {
        Log.e("catch. . .", "catch. . .");
        e.printStackTrace();
        }
   }

private void initilizeMap()
  {
    Log.e("initializing map. . . ", "initializing map. . ");
    if (googleMap == null)
      {
        googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();            
        if (googleMap == null)
         {
            Toast.makeText(getApplicationContext(),"Sorry! unable to create maps", Toast.LENGTH_SHORT).show();
         }
      }
  }

@Override
protected void onResume()
{
    super.onResume();
    initilizeMap();
}
}

Answer 1

试试这个

在xml中

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

    </LinearLayout>

在活动中： -

    public class ActivityMain extends Activity {
        // Google Map
        public GoogleMap googleMap;

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

        try {
            Log.e("loading map. . . .", "loading map. . . ");
            // Loading map
            initilizeMap();

        } catch (Exception e) {
            Log.e("catch. . .", "catch. . .");
            e.printStackTrace();
        }
        /*
         * MapFunctionality mf = new MapFunctionality(); mf.currentLoc();
         * mf.addMarker();
         */
    }

    /**
     * function to load map. If map is not created it will create it for you
     * */
    private void initilizeMap() {
        // MapFunctionality mf = new MapFunctionality();
        Log.e("initializing map. . . ", "initializing map. . ");
        if (googleMap == null) {
            googleMap = ((MapFragment) getFragmentManager().findFragmentById(
                    R.id.map)).getMap();

            // check if map is created successfully or not
            if (googleMap == null) {
                Toast.makeText(getApplicationContext(),
                        "Sorry! unable to create maps", Toast.LENGTH_SHORT)
                        .show();
            }
            // mf.currentLoc();
            // mf.addMarker();
        }
    }

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

    @Override
    protected void onResume() {
        super.onResume();
        initilizeMap();
    }
}

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谷歌地图应用程序在Android OS 4.3上崩溃

1 个答案: