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Using Google Maps on Android

I checked the program in which Google uses the following guides. I did everything as in the tutorial, but my application crashes, even showing something with the message "Unfortunately, HelloGoogleMaps has stopped." I tried to debug, and it seems that it worked even before the onCreate method was entered. This is my code:

package ru.medinfo.HelloGoogleMaps; import android.os.Bundle; import com.google.android.maps.MapActivity; import com.google.android.maps.MapView; public class HelloGoogleMapsActivity extends MapActivity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { //getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); super.onCreate(savedInstanceState); MapView mapView = (MapView) findViewById(R.id.mapview); mapView.setBuiltInZoomControls(true); setContentView(R.layout.main); } @Override protected boolean isRouteDisplayed() { return false; } }

Exclude after exclusion:

  01-27 16:22:34.195: W/dalvikvm(1038): Unable to resolve superclass of Lru/medinfo/HelloGoogleMaps/HelloGoogleMapsActivity; (3) 01-27 16:22:34.195: W/dalvikvm(1038): Link of class 'Lru/medinfo/HelloGoogleMaps/HelloGoogleMapsActivity;' failed 01-27 16:22:34.385: D/AndroidRuntime(1038): Shutting down VM 01-27 16:22:34.385: W/dalvikvm(1038): threadid=1: thread exiting with uncaught exception (group=0x409c01f8) 01-27 16:22:34.415: E/AndroidRuntime(1038): FATAL EXCEPTION: main 01-27 16:22:34.415: E/AndroidRuntime(1038): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{ru.medinfo.HelloGoogleMaps/ru.medinfo.HelloGoogleMaps.HelloGoogleMapsActivity}: java.lang.ClassNotFoundException: ru.medinfo.HelloGoogleMaps.HelloGoogleMapsActivity 01-27 16:22:34.415: E/AndroidRuntime(1038): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1880) 01-27 16:22:34.415: E/AndroidRuntime(1038): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 01-27 16:22:34.415: E/AndroidRuntime(1038): at android.app.ActivityThread.access$600(ActivityThread.java:123) 01-27 16:22:34.415: E/AndroidRuntime(1038): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 01-27 16:22:34.415: E/AndroidRuntime(1038): at android.os.Handler.dispatchMessage(Handler.java:99) 01-27 16:22:34.415: E/AndroidRuntime(1038): at android.os.Looper.loop(Looper.java:137) 01-27 16:22:34.415: E/AndroidRuntime(1038): at android.app.ActivityThread.main(ActivityThread.java:4424) 01-27 16:22:34.415: E/AndroidRuntime(1038): at java.lang.reflect.Method.invokeNative(Native Method) 01-27 16:22:34.415: E/AndroidRuntime(1038): at java.lang.reflect.Method.invoke(Method.java:511) 01-27 16:22:34.415: E/AndroidRuntime(1038): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 01-27 16:22:34.415: E/AndroidRuntime(1038): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 01-27 16:22:34.415: E/AndroidRuntime(1038): at dalvik.system.NativeStart.main(Native Method) 01-27 16:22:34.415: E/AndroidRuntime(1038): Caused by: java.lang.ClassNotFoundException: ru.medinfo.HelloGoogleMaps.HelloGoogleMapsActivity 01-27 16:22:34.415: E/AndroidRuntime(1038): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61) 01-27 16:22:34.415: E/AndroidRuntime(1038): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 01-27 16:22:34.415: E/AndroidRuntime(1038): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 01-27 16:22:34.415: E/AndroidRuntime(1038): at android.app.Instrumentation.newActivity(Instrumentation.java:1023) 01-27 16:22:34.415: E/AndroidRuntime(1038): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1871) 01-27 16:22:34.415: E/AndroidRuntime(1038): ... 11 more 01-27 16:22:34.465: W/ActivityManager(87): Force finishing activity ru.medinfo.HelloGoogleMaps/.HelloGoogleMapsActivity 01-27 16:22:34.488: W/WindowManager(87): Failure taking screenshot for (180x300) to layer 21010 01-27 16:22:35.001: W/ActivityManager(87): Activity pause timeout for ActivityRecord{41472d50 ru.medinfo.HelloGoogleMaps/.HelloGoogleMapsActivity} 01-27 16:22:35.295: W/NetworkManagementSocketTagger(87): setKernelCountSet(10044, 0) failed with errno -2 01-27 16:22:45.295: W/ActivityManager(87): Activity destroy timeout for ActivityRecord{41472d50 ru.medinfo.HelloGoogleMaps/.HelloGoogleMapsActivity}

Manifesto:

 <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="ru.medinfo.HelloGoogleMaps" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="15" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-library android:name="com.google.android.maps" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:name=".HelloGoogleMapsActivity" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
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3 answers

Put <uses-library android:name="com.google.android.maps" /> inside your application tag in your manifest

 <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="ru.medinfo.HelloGoogleMaps" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="15" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <uses-library android:name="com.google.android.maps" /> <activity android:name=".HelloGoogleMapsActivity" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
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I think the order should be as below.

 super.onCreate(savedInstanceState); setContentView(R.layout.main); MapView mapView = (MapView) findViewById(R.id.mapview); mapView.setBuiltInZoomControls(true);
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I had a similar problem. But after moving according to the explanation in an earlier post; he worked.

Regarding the initial exception; try using the following code example:

  package com.example.hellogooglemaps; import android.os.Bundle; import android.graphics.drawable.*; import com.google.android.maps.*; import java.util.*; public class HelloGoogleMapsActivity extends MapActivity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); MapView mapView = (MapView) findViewById(R.id.mapview); mapView.setBuiltInZoomControls(true); List<Overlay> mapOverlays = mapView.getOverlays(); Drawable drawable = this.getResources().getDrawable(R.drawable.android); HelloItemizedOverlay itemizedoverlay = new HelloItemizedOverlay(drawable, this); GeoPoint point = new GeoPoint(19240000,-99120000); OverlayItem overlayitem = new OverlayItem(point, "Hola, Mundo!", "I'm in Mexico City!"); itemizedoverlay.addOverlay(overlayitem); mapOverlays.add(itemizedoverlay); } @Override protected boolean isRouteDisplayed() { return false; } }
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Source: https://habr.com/ru/post/1393189/

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