我一直在从 here 学习 google maps api并完全按照所说的去做..
我的mainactivity
代码如下:
package com.map.place;
import android.app.Activity;
import android.os.Bundle;
import com.google.android.maps.MapActivity;
public class MainActivity extends MapActivity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
@Override
protected boolean isRouteDisplayed() {
return false;
}
}
main.xml
如下:
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/mapView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true"
android:apiKey="0Ove92B2I7FZi4SR2YX89jA374Wcg6-cJ33VwUg"
/>
最后,manifest
文件如下:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.map.place"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="10" />
<application android:label="@string/app_name" >
<activity android:name="MainActivity"
android:label="@string/app_name">
<uses-library android:name="com.google.android.maps" />
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
logcat 控制台显示如下:
E/AndroidRuntime( 975): FATAL EXCEPTION: main
E/AndroidRuntime( 975): java.lang.RuntimeException: Unable to instantiate activ
ity ComponentInfo{com.map.place/com.map.place.MainActivity}: java.lang.ClassNotF
oundException: com.map.place.MainActivity in loader dalvik.system.PathClassLoade
r[/data/app/com.map.place-2.apk]
我不知道出了什么问题,但这正在显示抱歉,应用程序意外停止
。
我在 2.3.3
平台和 API 级别 10
的 avd
上运行它。请纠正我...
最佳答案
我使用您的代码并使其可运行,下面是运行代码。仅更改您的 Map API key :尝试一下...并使用模拟器和带有 google API 的 android 版本,例如 android 2.2 google API 它还包括缩放控件: 主.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#008000"
android:orientation="vertical" >
<com.google.android.maps.MapView
android:id="@+id/mapView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:enabled="true"
android:clickable="true"
android:apiKey="0twJXMQDHBfxjMnb77nwRzKs29kGZdRkcG3_Z8Q" />
<LinearLayout android:id="@+id/zoom"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
/>
</RelativeLayout>
您的 manifest.xml 文件:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.map.place"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<uses-library
android:name="com.google.android.maps"
android:required="true" />
</application>
</manifest>
主要 Activity .java:
package com.map.place;
import android.os.Bundle;
import android.support.v4.view.ViewPager.LayoutParams;
import android.view.KeyEvent;
import android.view.View;
import android.widget.LinearLayout;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
public class MainActivity extends MapActivity{
//===========
MapView mapView;
public static String latitude,longitude;
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mapView = (MapView) findViewById(R.id.mapView);
mapView.setSatellite(false);
LinearLayout zoomLayout = (LinearLayout) findViewById(R.id.zoom);
View zoomView = mapView.getZoomControls();
zoomLayout.addView(zoomView, new
LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
mapView.displayZoomControls(true);
mapView.invalidate();
}
// Below is the code when the user presses the number 3 on the keyboard the
// map will zoom in into the next level. Pressing number 1 will zoom out one
// level.
public boolean onKeyDown(int keyCode, KeyEvent event) {
MapController mc = mapView.getController();
switch (keyCode) {
case KeyEvent.KEYCODE_3:
mc.zoomIn();
break;
case KeyEvent.KEYCODE_1:
mc.zoomOut();
break;
}
return super.onKeyDown(keyCode, event);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
//By Umesh Suryawanshi
关于android - 无法运行安卓应用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12870401/