我开始告诉我有关 google maps v2 的信息，所以我想在我的实际应用程序中使用它！
在清单和 xml 文件中，我做了所有事情（这有效），但我的问题出在我的地图活动中！当我点击我的应用程序应该启动的按钮时，只有一个黑屏并且我的项目崩溃了:(这里的代码：
显现：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="at.android.kioe"
android:versionCode="1"
android:versionName="1.1"
>
<uses-sdk android:minSdkVersion="17"
android:targetSdkVersion="17"/>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="my api debug key (v2) " />
<permission android:name="at.android.kioe.permission.MAPS_RECEIVE" android:protectionLevel="signature"/>
<uses-permission android:name="at.android.kioe.permission.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.INTERNET" />
<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" />
<application
android:icon="@drawable/label_kulinarik"
android:label="@string/app_name" >
<uses-library android:name="com.google.android.maps"> </uses-library>
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".DataBaseHelper"
android:theme="@android:style/Theme.NoTitleBar"
/>
<activity android:name=".hashmap"
android:theme="@android:style/Theme.NoTitleBar"
/>
<activity android:name=".LocationDemo2"
android:theme="@android:style/Theme.NoTitleBar"
/>
/>
<activity android:name=".Notepadv1"
android:theme="@android:style/Theme.NoTitleBar"
/>
</application>
</manifest>
main.xml（地图布局）：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="bottom"
android:orientation="vertical"
android:padding="6dp" >
<fragment
android:name="com.google.android.gms.maps.SupportMapFragment"
android:id="@+id/map"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<FrameLayout
android:id="@+id/frameLayout2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/frameLayout1"
android:layout_alignLeft="@+id/frameLayout1"
android:layout_alignRight="@+id/frameLayout1" >
</FrameLayout>
<FrameLayout
android:id="@+id/frameLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true" >
<LinearLayout
android:id="@+id/navi"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="bottom|center" >
<Button
android:id="@+id/button1"
android:layout_width="80dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_marginTop="3dp"
android:background="@color/black"
android:drawableTop="@drawable/idee"
android:onClick="StartseiteKlick"
android:text="Idee"
android:textColor="@color/white"
android:textSize="5pt" />
<Button
android:id="@+id/button2"
android:layout_width="80dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_marginTop="3dp"
android:background="@color/black"
android:drawableTop="@drawable/betriebe"
android:onClick="BezirkeKlick"
android:text="Betriebe"
android:textColor="@color/white"
android:textSize="5pt" />
<Button
android:id="@+id/button3"
android:layout_width="80dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_marginTop="3dp"
android:background="@color/black"
android:drawableTop="@drawable/maps_open"
android:onClick="GooglemapsKlick"
android:text="Karte"
android:textColor="@color/white"
android:textSize="5pt" />
<Button
android:id="@+id/button4"
android:layout_width="80dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_marginTop="3dp"
android:background="@color/black"
android:drawableTop="@drawable/suche"
android:onClick="SucheKlick"
android:text="Suche"
android:textColor="@color/white"
android:textSize="5pt" />
</LinearLayout>
</FrameLayout>
</RelativeLayout>
位置demo2.java：
package at.android.kioe;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.OverlayItem;
@SuppressLint("Override")
public class LocationDemo2 extends FragmentActivity {
private static final String TAG = "**** "+LocationDemo2.class.getSimpleName();
private MapController mapController;
MapView mapView;
GeoPoint geoPoint;
boolean art;
int pFeld[];
int districtID;
double zielLat,zielLng; //geographische Breite,Länge als Parameter des Ziels
private boolean DEBUG = false;
//Buttons:
public void StartseiteKlick (View vies) {
setContentView(R.layout.startseite);
}
public void GooglemapsKlick (View vies) {
setContentView(R.layout.googlemaps);
}
public void SucheKlick (View vies) {
setContentView(R.layout.suche);
}
public void BezirkeKlick (View vies) {
setContentView(R.layout.bezirke);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Intent in = getIntent();
art = in.getBooleanExtra("karte", false);
if (art) { //Karte mit allen Betrieben des Bezirks
districtID=in.getIntExtra("districtID",0);
pFeld = in.getIntArrayExtra("pFeld"); //Koordinaten der Betriebe
} else { //Karte mit dem aus der Liste gewählten Betrieb im Mittelpunkt
zielLat = in.getFloatExtra("lat",0);
zielLng = in.getFloatExtra("lng",0);
geoPoint = new GeoPoint((int)(zielLat*1E6), (int)(zielLng*1E6));
}
// Zoom aktivieren
// MapController ermitteln
mapController = mapView.getController();
} //Ende onCreate
@Override
protected void onStart() {
super.onStart();
if (!art) { //Karte nur für aus der Liste ausgewählten Betrieb
//fügt der MapView neues Overlay (zum zeichnen der 'current location') hinzu
List<Overlay> overlays = mapView.getOverlays();
// overlays.clear();
overlays.add(new MyOverlay());
} else //alle Betriebe in Karte zeichnen
multipleItems();
}
private void multipleItems() {
// mapView.setSatellite(true);
Drawable markerDefault = this.getResources().getDrawable(R.drawable.mm_20_green);
MyItemizedOverlay itemizedOverlay = new MyItemizedOverlay(markerDefault);
//für alle Betriebe ein Item aus den Koordinaten bilden und die
//where-Klausel mit der _id des Betriebes hinzufügen für onTap
for (int i=0; i<pFeld.length; i+=3) {
if (pFeld[i+1] > 0)
itemizedOverlay.addOverlayItem(pFeld[i+1],pFeld[i+2],"_id="+pFeld[i]);
}
//alle Items zur MapView hinzufügen
mapView.getOverlays().add(itemizedOverlay);
//den Mittelpunkt für den ausgewählten District heraussuchen
int lat=0,lng=0;
for (int i=0; i < Notepadv1.mpFeld.length; i+=3) {
if (Notepadv1.mpFeld[i] == districtID) {
lat = Notepadv1.mpFeld[i+1];
lng = Notepadv1.mpFeld[i+2];
//Darstellung Mittelpunkt
// itemizedOverlay.addOverlayItem(lat,lng,"",this.getResources().getDrawable(R.drawable.marker_default));
mapController.setCenter(new GeoPoint(lat,lng));
break;
}
}
if (DEBUG) {
String message="Anzahl Koord.:"+pFeld.length/3+", Mitte:"+lat+","+lng;
Log.i(TAG,message);
Toast.makeText(LocationDemo2.this, message, Toast.LENGTH_LONG).show();
}
mapController.zoomToSpan(itemizedOverlay.getLatSpanE6(), itemizedOverlay.getLonSpanE6());
}
@Override
protected void onDestroy() {
super.onDestroy();
}
protected boolean isRouteDisplayed() {
return false;
}
/* a private inner class which extends Overlay and override the draw method
* http://androidcookbook.com/Recipe.seam?recipeId=1541
* zeichnet als 'overlay' den 'geoPoint' in die Karte
*/
private class MyOverlay extends com.google.android.maps.Overlay {
@Override
public void draw(Canvas canvas, MapView mapView, boolean shadow) {
super.draw(canvas, mapView, shadow);
if (!shadow && geoPoint != null) {
mapController.setCenter(geoPoint);
Point point = new Point(); //wird Koordinate des GeoPoint
mapView.getProjection().toPixels(geoPoint, point);
Bitmap bmp = BitmapFactory.decodeResource(getResources(),//R.drawable.marker_default);
R.drawable.mm_20_green);
// Shift it left so the center of the image is aligned with the x-coordinate of the geo point
int x = point.x - bmp.getWidth() / 2;
// Shift it upward so the bottom of the image is aligned with the y-coordinate of the geo point
int y = point.y - bmp.getHeight();
canvas.drawBitmap(bmp, x, y, null);
}
}
}
private class MyItemizedOverlay extends ItemizedOverlay<OverlayItem> {
private List<OverlayItem> mOverlays = new ArrayList<OverlayItem>();
public MyItemizedOverlay(Drawable defaultMarker) {
super(boundCenterBottom(defaultMarker));
}
public void addOverlayItem(int lat, int lon, String title, Drawable altMarker) {
GeoPoint point = new GeoPoint(lat, lon);
OverlayItem overlayItem = new OverlayItem(point, title, null);
addOverlayItem(overlayItem, altMarker);
}
public void addOverlayItem(int lat, int lon, String title) {
GeoPoint point = new GeoPoint(lat, lon);
OverlayItem overlayItem = new OverlayItem(point, title, null);
addOverlayItem(overlayItem);
}
public void addOverlayItem(OverlayItem overlayItem) {
mOverlays.add(overlayItem);
populate();
}
public void addOverlayItem(OverlayItem overlayItem, Drawable altMarker) {
overlayItem.setMarker(boundCenterBottom(altMarker));
addOverlayItem(overlayItem);
}
@Override
protected OverlayItem createItem(int i) {
return mOverlays.get(i);
}
@Override
public int size() {
return mOverlays.size();
}
@Override
protected boolean onTap(int index) {
if (DEBUG)
Toast.makeText(LocationDemo2.this,
getItem(index).getTitle()+", Index:"+index, Toast.LENGTH_LONG).show();
Intent in = new Intent(getApplicationContext(),Notepadv1.class);
in.putExtra("art", "where");
//_id des gewählten Listenpunktes
in.putExtra("where", getItem(index).getTitle());
//Info-Daten zum gewählten Betrieb anzeigen
String infotext = new hashmap().texte.get(index + 1);
new AlertDialogManager().showAlertDialog(LocationDemo2.this, "info", infotext, in);
return true;
}
public class AlertDialogManager
{
public void showAlertDialog(Context context, String title, String infoText, final Intent in)
{
final AlertDialog alertDialog = new AlertDialog.Builder(context).create();
// Setting Dialog Title
alertDialog.setTitle(title);
// Setting Dialog Message
alertDialog.setMessage(infoText);
alertDialog.setButton("Info", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which)
{
startActivity(in);
}
});
alertDialog.setButton2("zurück", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which)
{
alertDialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
}
}
public void finish() {}
public void finishAffinity() {}
}
日志猫：
08-31 17:05:08.981: E/AndroidRuntime(22481): FATAL EXCEPTION: main
08-31 17:05:08.981: E/AndroidRuntime(22481): java.lang.RuntimeException: Unable to start activity ComponentInfo{at.android.kioe/at.android.kioe.LocationDemo2}: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2247)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2297)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.app.ActivityThread.access$700(ActivityThread.java:152)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1282)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.os.Handler.dispatchMessage(Handler.java:99)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.os.Looper.loop(Looper.java:137)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.app.ActivityThread.main(ActivityThread.java:5328)
08-31 17:05:08.981: E/AndroidRuntime(22481): at java.lang.reflect.Method.invokeNative(Native Method)
08-31 17:05:08.981: E/AndroidRuntime(22481): at java.lang.reflect.Method.invoke(Method.java:511)
08-31 17:05:08.981: E/AndroidRuntime(22481): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
08-31 17:05:08.981: E/AndroidRuntime(22481): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
08-31 17:05:08.981: E/AndroidRuntime(22481): at dalvik.system.NativeStart.main(Native Method)
08-31 17:05:08.981: E/AndroidRuntime(22481): Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:710)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.view.LayoutInflater.rInflate(LayoutInflater.java:752)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.view.LayoutInflater.inflate(LayoutInflater.java:495)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
08-31 17:05:08.981: E/AndroidRuntime(22481): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:327)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.app.Activity.setContentView(Activity.java:1928)
08-31 17:05:08.981: E/AndroidRuntime(22481): at at.android.kioe.LocationDemo2.onCreate(LocationDemo2.java:67)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.app.Activity.performCreate(Activity.java:5250)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1097)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
08-31 17:05:08.981: E/AndroidRuntime(22481): ... 11 more
08-31 17:05:08.981: E/AndroidRuntime(22481): Caused by: java.lang.RuntimeException: API key not found. Check that <meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="your API key"/> is in the <application> element of AndroidManifest.xml
08-31 17:05:08.981: E/AndroidRuntime(22481): at maps.ag.bb.a(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at maps.ag.bb.a(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at maps.ag.an.a(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at maps.ag.bi.a(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at maps.ag.bh.a(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at blf.onTransact(SourceFile:107)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.os.Binder.transact(Binder.java:310)
08-31 17:05:08.981: E/AndroidRuntime(22481): at com.google.android.gms.maps.internal.IMapFragmentDelegate$a$a.onCreateView(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at com.google.android.gms.maps.SupportMapFragment$a.onCreateView(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at com.google.android.gms.internal.bh$4.b(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at com.google.android.gms.internal.bh.a(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at com.google.android.gms.internal.bh.onCreateView(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at com.google.android.gms.maps.SupportMapFragment.onCreateView(Unknown Source)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1478)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:900)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1082)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1184)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:285)
08-31 17:05:08.981: E/AndroidRuntime(22481): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:682)
我希望任何人都可以帮助我..我已经在寻找几个小时了...