android獲取經緯度

運行效果圖：

 

manifests：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mingrisoft.getgps">

    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

 

activity_main.xml：

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/location"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

 

MainActivity：

package com.mingrisoft.getgps;

import android.Manifest;
import android.app.Activity;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.WindowManager;
import android.widget.TextView;
import android.widget.Toast;

import java.text.SimpleDateFormat;
import java.util.Date;

public class MainActivity extends Activity {
    private TextView text;  //定義用於顯示LocationProvider的TextView組件

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);   //設置全屏顯示

        text = (TextView) findViewById(R.id.location);  //獲取顯示Location信息的TextView組件
        //獲取系統的LocationManager對象
        LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);

        // 要申請的權限 數組 可以同時申請多個權限
        String[] permissions = {Manifest.permission.ACCESS_COARSE_LOCATION};
        if (Build.VERSION.SDK_INT >= 23) {
            //如果超過6.0才需要動態權限，否則不需要動態權限
            //如果同時申請多個權限，可以for循環遍歷
            int check = ContextCompat.checkSelfPermission(this, permissions[0]);
            // 權限是否已經 授權 GRANTED---授權  DINIED---拒絕
            if (!(check == PackageManager.PERMISSION_GRANTED)) {
                //寫入你需要權限才能使用的方法
                Toast.makeText(MainActivity.this, "請開啟定位權限和GPS！", Toast.LENGTH_LONG).show();
            }
        }

            //添加權限檢查
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }
        //設置每一秒獲取一次location信息
        locationManager.requestLocationUpdates(
                LocationManager.GPS_PROVIDER,      //GPS定位提供者
                1000,       //更新數據時間為1秒
                1,      //位置間隔為1米
                //位置監聽器
                new LocationListener() {  //GPS定位信息發生改變時觸發，用於更新位置信息

                    @Override
                    public void onLocationChanged(Location location) {
                        //GPS信息發生改變時，更新位置
                        locationUpdates(location);
                    }

                    @Override
                    //位置狀態發生改變時觸發
                    public void onStatusChanged(String provider, int status, Bundle extras) {
                    }

                    @Override
                    //定位提供者啟動時觸發
                    public void onProviderEnabled(String provider) {
                    }

                    @Override
                    //定位提供者關閉時觸發
                    public void onProviderDisabled(String provider) {
                    }
                });
        //從GPS獲取最新的定位信息
        Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        locationUpdates(location);    //將最新的定位信息傳遞給創建的locationUpdates()方法中
    }

    public void locationUpdates (Location location){  //獲取指定的查詢信息
        //如果location不為空時
        if (location != null) {
            StringBuilder stringBuilder = new StringBuilder();        //使用StringBuilder保存數據
            //獲取經度、緯度、等屬性值
            stringBuilder.append("您的位置信息：\n");
            stringBuilder.append("經度：");
            stringBuilder.append(location.getLongitude());
            stringBuilder.append("\n緯度：");
            stringBuilder.append(location.getLatitude());
            text.setText(stringBuilder);            //顯示獲取的信息
        } else {
            //否則輸出空信息
            text.setText("沒有獲取到GPS信息");
        }
    }
}