Android应用里面调用Google Earth应用

说明：这里的调用是指调用Google Earth应用程序来标识某个地点，而不是像Google Map一样有可调用的API，可以嵌于到自己的应用之中。

该测试程序是在调研Google Earth API的过程中看到并动手测试了，Google Earth并没有开放的API。

测试该程序前，需安装Google Earth 应用（Android版），当然了，如果没有安装，调用时会提示你安装的。

程序就一个按钮，点击后会调用Google Earth 并定位到“中国北京”。

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<Button android:id="@+id/btn"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Test Google Eearth" />
</LinearLayout>

主文件：

import android.app.Activity;
import android.app.AlertDialog;
import android.app.SearchManager;
import android.content.ActivityNotFoundException;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.widget.Button;
 
public class TutorialPartI extends Activity {
    /** Called when the activity is first created. */
	private Button btn = null;
    @Override
    public void onCreate(Bundle savedInstanceState) {
    	super.onCreate(savedInstanceState);
 
    	//设置应用程序全屏显示
    	this.requestWindowFeature(Window.FEATURE_NO_TITLE); 
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN); 
 
        setContentView(R.layout.main);
 
   		btn = (Button) findViewById(R.id.btn);
   		btn.setOnClickListener(btnListener);
 
    }
 
    //按钮事件
	private OnClickListener btnListener = new OnClickListener() {
 
		public void onClick(View view) {
 
			// the new intent we will launch
			Intent myIntent = new Intent();
 
			myIntent.setClassName("com.google.earth", "com.google.earth.EarthActivity");
 
			// we are doing a search query
			myIntent.setAction(Intent.ACTION_SEARCH);
 
			// change this address to any address you want to fly to
			myIntent.putExtra(SearchManager.QUERY, "beijing china");
 
			try {
			    // launch google earth and fly to location
				//TutorialPartI.startActivity(myIntent);
				startActivityForResult(myIntent, 0);
			}
			catch (ActivityNotFoundException e) {
			    showGoogleEarthDialog();
			}
		}
	};
 
	// 如果没有安装Google Earth应用，则提示用户安装
	private void showGoogleEarthDialog() {
 
	        AlertDialog.Builder downloadDialog = new AlertDialog.Builder(this);
	        downloadDialog.setTitle("Install Google Earth?");
	        downloadDialog.setMessage("This application requires Google Earth. Would you like to install it?");
	        downloadDialog.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
	            public void onClick(DialogInterface dialogInterface, int i) {
	                Uri uri = Uri.parse("market://search?q=pname:com.google.earth");
	                Intent intent = new Intent(Intent.ACTION_VIEW, uri);
	                TutorialPartI.this.startActivity(intent);
	            }
	        });
	        downloadDialog.setNegativeButton("No", new DialogInterface.OnClickListener() {
	              public void onClick(DialogInterface dialogInterface, int i) {}
	        });
	        downloadDialog.show();
	} 
}