Java SplashScreen后Android显示主要活动和谷歌地图
我的应用程序一直在崩溃，我真的不知道为什么！ 我有两个活动：SplashScreen.java和MainActivity.java 还有两种布局：用于MapView的activity_main.xml和用于SplashScreen的activity_splash_screen.xml 发生的情况如下：我运行应用程序->SplashScreen加载和显示，但应用程序崩溃 也许你们当中有人可以帮我，或者知道任何可以帮助我的教程。如果你需要更多的信息，请告诉我 这是我的主要活动：Java SplashScreen后Android显示主要活动和谷歌地图,java,android,android-studio,Java,Android,Android Studio,我的应用程序一直在崩溃，我真的不知道为什么！ 我有两个活动：SplashScreen.java和MainActivity.java 还有两种布局：用于MapView的activity_main.xml和用于SplashScreen的activity_splash_screen.xml 发生的情况如下：我运行应用程序->SplashScreen加载和显示，但应用程序崩溃 也许你们当中有人可以帮我，或者知道任何可以帮助我的教程。如果你需要更多的信息，请告诉我 这是我的主要活动： packag
package me.resq.resqme;
import android.app.Activity;
import android.os.Bundle;
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.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
public class MainActivity extends Activity {
// Constant for defining latitude and longitude
static final LatLng DerekPos = new LatLng(40 , -79);
// GoogleMap class
private GoogleMap googleMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// verify we can interact with the Google Map
try {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().
findFragmentById(R.id.map)).getMap();
}
// Show a satellite map with roads
/* MAP_TYPE_NORMAL: Basic map with roads.
MAP_TYPE_SATELLITE: Satellite view with roads.
MAP_TYPE_TERRAIN: Terrain view without roads.
*/
googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
// Place dot on current location
googleMap.setMyLocationEnabled(true);
// Turns traffic layer on
googleMap.setTrafficEnabled(true);
// Enables indoor maps
googleMap.setIndoorEnabled(true);
// Turns on 3D buildings
googleMap.setBuildingsEnabled(true);
// Show Zoom buttons
googleMap.getUiSettings().setZoomControlsEnabled(true);
// Create a marker in the map at a given position with a title
Marker marker = googleMap.addMarker(new MarkerOptions().
position(DerekPos).title("Sie sind hier!"));
} catch (Exception e) {
e.printStackTrace();
}
}
}
package me.resq.resqme;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
public class SplashScreen extends Activity {
private static int SPLASH_SCREEN_DELAY = 3000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
// Executed after timer is finished (Opens MainActivity)
Intent intent = new Intent(SplashScreen.this, MainActivity.class);
startActivity(intent);
// Kills this Activity
finish();
}
}, SPLASH_SCREEN_DELAY);
}
}
package me.resq.resqme;
import android.app.Activity;
import android.os.Bundle;
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.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
public class MainActivity extends Activity {
// Constant for defining latitude and longitude
static final LatLng DerekPos = new LatLng(40 , -79);
// GoogleMap class
private GoogleMap googleMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// verify we can interact with the Google Map
try {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().
findFragmentById(R.id.map)).getMap();
}
// Show a satellite map with roads
/* MAP_TYPE_NORMAL: Basic map with roads.
MAP_TYPE_SATELLITE: Satellite view with roads.
MAP_TYPE_TERRAIN: Terrain view without roads.
*/
googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
// Place dot on current location
googleMap.setMyLocationEnabled(true);
// Turns traffic layer on
googleMap.setTrafficEnabled(true);
// Enables indoor maps
googleMap.setIndoorEnabled(true);
// Turns on 3D buildings
googleMap.setBuildingsEnabled(true);
// Show Zoom buttons
googleMap.getUiSettings().setZoomControlsEnabled(true);
// Create a marker in the map at a given position with a title
Marker marker = googleMap.addMarker(new MarkerOptions().
position(DerekPos).title("Sie sind hier!"));
} catch (Exception e) {
e.printStackTrace();
}
}
}
package me.resq.resqme;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
public class SplashScreen extends Activity {
private static int SPLASH_SCREEN_DELAY = 3000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
// Executed after timer is finished (Opens MainActivity)
Intent intent = new Intent(SplashScreen.this, MainActivity.class);
startActivity(intent);
// Kills this Activity
finish();
}
}, SPLASH_SCREEN_DELAY);
}
}
<fragment
android:id="@+id/map"
class="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="80dp"
android:layout_weight="0.7"
android:layout_above="@+id/button"
android:layout_alignParentTop="true" />