GPSDemo-手动获取

AndLi
浏览: 323113 次
性别:
来自: 苏州
最近访客更多访客>>

jx0923
ckw
282682910
fenglangwangyi
博主相关

博客
微博
相册
留言
关于我
文章分类

社区版块

存档分类

博客分类：
package com.lilin.gps;

import java.util.Date;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.text.TextUtils;
import android.text.format.DateFormat;
import android.view.View;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class GPSView extends Activity implements OnClickListener {
	private LocationManager locationManager;
	private Criteria criteria;
	private String provider;

	private TextView tv_isgps;// gps的状态
	private TextView tv_Y;// 纬度
	private TextView tv_X;// 经度
	private TextView tv_GpsTime;// 获取的时间
	private TextView tv_InfoType;// 信息的来源
	private EditText et_SetTimeSpace;// 设置时间间隔

	private Button get_btn;
	private Button setime_btn;
	private Button setgps_btn;

	int getTime = 5000;// 每5秒获得一次
	int distance = 10;// 距离10米以上
	GPS gps = new GPS();

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		// 隐藏输入法
		getWindow().setSoftInputMode(
				WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
		setTitle("GPS");
		initUI();
	}

	/**
	 * @author lilin
	 * @date 2012-2-21 下午10:04:06
	 * @annotation
	 */
	private void initUI() {
		tv_isgps = (TextView) findViewById(R.id.tv_isgps);
		tv_Y = (TextView) findViewById(R.id.tvlatitude);
		tv_X = (TextView) findViewById(R.id.tvlongitude);
		tv_GpsTime = (TextView) findViewById(R.id.tvgpstime);
		tv_InfoType = (TextView) findViewById(R.id.tvinfotype);
		et_SetTimeSpace = (EditText) findViewById(R.id.ettimespace);
		get_btn = (Button) findViewById(R.id.get_btn);
		setgps_btn = (Button) findViewById(R.id.setgps_btn);
		get_btn.setOnClickListener(this);
		setime_btn = (Button) findViewById(R.id.settime_btn);
		setime_btn.setOnClickListener(this);
		setgps_btn.setOnClickListener(this);
	}

	/**
	 * 
	 * @author lilin
	 * @date 2012-2-21 下午10:23:27
	 * @annotation 检查GPS模块
	 */
	private boolean checkGPS() {
		LocationManager lm = (LocationManager) this
				.getSystemService(Context.LOCATION_SERVICE);// 获取位置管理服务
		if (lm.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
			Toast.makeText(this, "GPS模块正常", 5000).show();
			tv_isgps.setText("GPS模块正常");
			return true;
		}
		tv_isgps.setText("GPS模块已关闭！");
		clearDate();
		Toast.makeText(GPSView.this, "请开启GPS！", 5000).show();
		AlertDialog.Builder builder = new AlertDialog.Builder(this);
		builder.setMessage("GPS未打开,要打开吗？");
		builder.setTitle("提示");
		builder.setCancelable(false).setPositiveButton("确定",
				new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int id) {
						// 打开GPS设置
						Intent intent = new Intent(
								Settings.ACTION_LOCATION_SOURCE_SETTINGS);
						startActivityForResult(intent, 0); // 此为设置完成后返回到获取界面
					}
				});
		builder.setNegativeButton("取消", null).show();
		return false;
	}

	// 初始化
	private void initGPS() {
		locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
		criteria = new Criteria();
		criteria.setAccuracy(Criteria.ACCURACY_FINE);// 高精度
		criteria.setAltitudeRequired(true);// 显示海拔
		criteria.setBearingRequired(false);// 显示方向
		criteria.setSpeedRequired(false);// 显示速度
		criteria.setCostAllowed(false);// 不允许有花费
		criteria.setPowerRequirement(Criteria.POWER_LOW);// 低功耗
		provider = locationManager.getBestProvider(criteria, true);
		Location location = locationManager.getLastKnownLocation(provider); // 通过GPS获取位置
		getGPS(location);
		locationManager.requestLocationUpdates(provider, getTime, distance,
				locationListener);// 位置变化监听
	}

	private final LocationListener locationListener = new LocationListener() {
		public void onLocationChanged(Location arg0) {
			// showInfo(getGPS(), 2);
		}

		public void onProviderDisabled(String arg0) {
			// showInfo(null, -1);
		}

		public void onProviderEnabled(String arg0) {
		}

		public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
		}
	};

	private GPS getGPS(Location location) {// 获取GPS相应的数据

		if (location != null) {
			gps.Latitude = location.getLatitude();
			gps.Longitude = location.getLongitude();
			Date d = new Date();
			d.setTime(location.getTime() + 28800000);// UTC时间,转北京时间+8小时
			gps.GpsTime = DateFormat.format("yyyy-MM-dd kk:mm:ss", d)
					.toString();
			d = null;
		}
		return gps;
	}

	// 显示信息
	private void showInfo(GPS gps, int infotype) {
		if (gps != null) {
			tv_Y.setText("y=" + gps.Latitude);
			tv_X.setText("x=" + gps.Longitude);
			tv_GpsTime.setText("更新时间:" + gps.GpsTime);
			switch (gps.InfoType) {
			case 1:
				tv_InfoType.setText("信息来源状态:手动获取更新");
				break;
			case 2:
				tv_InfoType.setText("信息来源状态:位置改变更新");
				break;
			}
		} else {
			tv_X.setText("GPS数据获取失败，请稍后再试！");
		}

	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.get_btn:
			if (checkGPS()) {
				initGPS();
				if (gps != null) {
					showInfo(gps, 1);
				}
			}
			break;
		case R.id.settime_btn:
			String text = et_SetTimeSpace.getText().toString();
			if (TextUtils.isEmpty(text)) {
				Toast.makeText(this, "请输入更新时间间隔", Toast.LENGTH_LONG).show();
				et_SetTimeSpace.requestFocus();
				return;
			}
			Toast.makeText(this, "设置成功 ：每" + text + "秒更新", 5000).show();
			getTime = Integer.valueOf(text) * 1000;
			if (locationManager.isProviderEnabled(Context.LOCATION_SERVICE))
				locationManager.requestLocationUpdates(provider, getTime,
						distance, locationListener);

			break;
		case R.id.setgps_btn:
			// 打开GPS设置
			Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
			startActivityForResult(intent, 0); // 此为设置完成后返回到获取界面
			break;

		default:
			break;
		}
	}

	public void clearDate() {
		tv_GpsTime.setText("");
		tv_InfoType.setText("");
		tv_X.setText("");
		tv_Y.setText("");
	}

	public void onResume() {
		LocationManager lm = (LocationManager) this
				.getSystemService(Context.LOCATION_SERVICE);// 获取位置管理服务
		if (lm.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
			Toast.makeText(this, "GPS模块正常", 5000).show();
			tv_isgps.setText("GPS模块正常");
		} else {
			tv_isgps.setText("GPS模块已关闭！");
			clearDate();
		}

		super.onResume();
	}

	public void onPause() {
		LocationManager lm = (LocationManager) this
				.getSystemService(Context.LOCATION_SERVICE);// 获取位置管理服务
		if (lm.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
			Toast.makeText(this, "GPS模块正常", 5000).show();
			tv_isgps.setText("GPS模块正常");
		} else {
			tv_isgps.setText("GPS模块已关闭！");
			clearDate();
		}
		super.onPause();
	}

}