SECTION149 位置情報取得時にインテントを発行する

ReceiveActivityが複数起動してしまうのが困るな。

Main.java

package com.efolab.s149;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.location.Criteria;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.LinearLayout;

public class Main extends Activity {

	Context context;
	LinearLayout base;
	LocationManager loc;
	PendingIntent pending;
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
	    super.onCreate(savedInstanceState);
	
	    context = getApplicationContext();
	    base = new LinearLayout(context);
	    base.setOrientation(LinearLayout.VERTICAL);
	    setContentView(base);
	    
	    //位置情報取得時に実行するインテントを生成
	    Intent intent = new Intent(context, ReceiveActivity.class);
//	    intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);	//効果なし
	    pending = PendingIntent.getActivity(context, 0, intent, 0);
	    
	    //精度を設定
	    Criteria criteria = new Criteria();
	    criteria.setAccuracy(Criteria.ACCURACY_FINE);
	    
	    //LocationManagerインスタンスを生成
	    loc = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
	    
	    //位置情報をリクエスト
	    loc.requestLocationUpdates(3L, 0, criteria, pending);
	}
	@Override
	protected void onDestroy(){
		super.onDestroy();
		loc.removeUpdates(pending);
	}

}

ReceiveActivity.java

package com.efolab.s149;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.os.Bundle;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.TextView;

public class ReceiveActivity extends Activity {
	Context context;
	LinearLayout base;
	TextView tv;
	private static int classCounter = 0;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		context = getApplicationContext();
		base = new LinearLayout(context);
		setContentView(base);
		
		tv = new TextView(context);
		
		base.addView(tv);
		
		//受け取ったIntentを取得
		Intent intent = getIntent();
		showData(intent);
	}

	@Override
	protected void onNewIntent(Intent intent) {
		// TODO Auto-generated method stub
		super.onNewIntent(intent);
		showData(intent);
	}
	private void showData(Intent intent){
		//インテントからBundleを取得
		Bundle bundle = intent.getExtras();
		//Locationオブジェクトを取得
		Location location = (Location)bundle.get("location");
		
		double lat = location.getLatitude();
		double lng = location.getLongitude();
		
		Log.v("ReceiveActivity","lat="+lat+",lng="+lng);
		
		tv.setText("ReceiveActivity:"+classCounter++);
	}

}