java - android map 查看错误

Question

我从example做同样的事情，但 Eclipse 返回错误。代码如下:

package hello.google.map;

import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import android.os.Bundle;

public class MapsActivity 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;
    }
}

错误如下:

*

Description Resource    Path    Location    Type
MapActivity cannot be resolved to a type    HelloGoogleMapsActivity.java    /HelloGoogleMaps/src/hello/google/map   line 7  Java Problem
MapActivity cannot be resolved to a type    HelloGoogleMapsActivity.java    /HelloGoogleMaps/src/hello/google/map   line 13 Java Problem
The import com.google cannot be resolved    HelloGoogleMapsActivity.java    /HelloGoogleMaps/src/hello/google/map   line 3  Java Problem
The import com.google cannot be resolved    HelloGoogleMapsActivity.java    /HelloGoogleMaps/src/hello/google/map   line 4  Java Problem
The method isRouteDisplayed() of type MapsActivity must override a superclass method    HelloGoogleMapsActivity.java    /HelloGoogleMaps/src/hello/google/map   line 18 Java Problem
The method onCreate(Bundle) of type MapsActivity must override a superclass method  HelloGoogleMapsActivity.java    /HelloGoogleMaps/src/hello/google/map   line 11 Java Problem
The method setContentView(int) is undefined for the type MapsActivity   HelloGoogleMapsActivity.java    /HelloGoogleMaps/src/hello/google/map   line 14 Java Problem
The public type MapsActivity must be defined in its own file    HelloGoogleMapsActivity.java    /HelloGoogleMaps/src/hello/google/map   line 7  Java Problem*

为什么？我做错了什么？

Answer 1

从表面上看，您可能错过了两件事。要么您忘记将以下内容添加到 AndroidManifest.xml

<uses-library android:name="com.google.android.maps" />

或者，您尝试在具有普通 Android API(而不是特殊 Google API 版本)的模拟器上运行它。您需要此 Google API 版本才能使用 map 等功能。

如果您没有，不用担心，您可以在 SDK Manager 中下载。然后，只需创建一个新的 AVD 并将目标设置为目标 API 级别的 Google API 版本即可。