GoogleMap崩溃了android Java android 4.3

Question

我必须在Android EMulator中显示谷歌地图，但它崩溃，甚至每当我下载谷歌地图的代码，我可以api键，所有其他库但应用程序崩溃，这是我当前的代码。

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;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {
    GoogleMap map;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
        map.setMapType(GoogleMap.MAP_TYPE_SATELLITE);

        LatLng latLng = new LatLng(13.05241, 80.25082);
        map.addMarker(new MarkerOptions().position(latLng).title("Raj Amal"));
    }}

但是当map.setMapType(GoogleMap.MAP_TYPE_SATELLITE);及以下是我的日志猫

时，应用会崩溃

    03-21 07:24:33.904: E/AndroidRuntime(1039): FATAL EXCEPTION: main
    03-21 07:24:33.904: E/AndroidRuntime(1039): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.amal.googlemap/com.amal.googlemap.MainActivity}: java.lang.NullPointerException
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at android.os.Handler.dispatchMessage(Handler.java:99)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at android.os.Looper.loop(Looper.java:137)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at android.app.ActivityThread.main(ActivityThread.java:5103)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at java.lang.reflect.Method.invokeNative(Native Method)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at java.lang.reflect.Method.invoke(Method.java:525)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at dalvik.system.NativeStart.main(Native Method)
    03-21 07:24:33.904: E/AndroidRuntime(1039): Caused by: java.lang.NullPointerException
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at com.amal.googlemap.MainActivity.onCreate(MainActivity.java:18)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at android.app.Activity.performCreate(Activity.java:5133)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
    03-21 07:24:33.904: E/AndroidRuntime(1039):     ... 11 more

Answer 1

你应该像这样实施

int status = GooglePlayServicesUtil
            .isGooglePlayServicesAvailable(youractivity.this);

    if (status == ConnectionResult.SUCCESS) {

        setUpMapIfNeeded();

    } else {
        int requestCode = 10;
        Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, youractivity.this,
                requestCode);
        dialog.show();
    }

对于设置 Google Play服务库，请转到official docs

Answer 2

可以在模拟器中显示谷歌地图，你必须创建没有谷歌API的avd并安装Google_Play_services_4.0.31.apk和com.android.vending.apk（google play store）然后运行你的应用程序

让我知道是否有任何问题，如果工作正常，请选择我的答案