1.會使用到com.google.android.gms:play-services:9.8.0，所以要到Project Structure裡的Dependencies裡新增
2.程式碼如下 :
activity_main.xml :
activity_main.xml :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="tw.com.hjchen.mylocation.MainActivity"
android:orientation="vertical">
<Button
android:id="@+id/getlastlocation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Get my last location"/>
<TextView
android:id="@+id/lastlocation"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
MainActivity.java
import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.LocationManager;
import android.os.Build;
import android.provider.Settings;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.location.Location;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationServices;
public class MainActivity extends AppCompatActivity
implements GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
Button btnGetLastLocation;
TextView textLastLocation;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
private static final int REQUEST_FINE_LOCATION_PERMISSION = 102;
private boolean getService = false; //是否已開啟定位服務
private LocationManager status;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnGetLastLocation = (Button) findViewById(R.id.getlastlocation);
btnGetLastLocation.setOnClickListener(btnGetLastLocationOnClickListener);
textLastLocation = (TextView) findViewById(R.id.lastlocation);
status = (LocationManager) (this.getSystemService(Context.LOCATION_SERVICE));
// Create an instance of GoogleAPIClient.
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
//如果沒有授權使用定位就會跳出來這個
// 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.
requestLocationPermission(); // 詢問使用者開啟權限
return;
}
}
private void requestLocationPermission(){
// 如果裝置版本是6.0（包含）以上
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
// 取得授權狀態，參數是請求授權的名稱
int hasPermission = checkSelfPermission(
android.Manifest.permission.ACCESS_FINE_LOCATION);
int hasPermission2 = checkSelfPermission(
Manifest.permission.ACCESS_COARSE_LOCATION);
// 如果未授權
if (hasPermission != PackageManager.PERMISSION_GRANTED) {
// 請求授權
// 第一個參數是請求授權的名稱
// 第二個參數是請求代碼
requestPermissions(
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
REQUEST_FINE_LOCATION_PERMISSION);
}
// if (hasPermission2!=PackageManager.PERMISSION_GRANTED){
// requestPermissions(
// new String[]{Manifest.permission.ACCESS_COARSE_LOCATION},
// REQUEST_COARSE_LOCATION_PERMISSION);
//
// }
else {
// 啟動地圖與定位元件
}
}
}
View.OnClickListener btnGetLastLocationOnClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
if(status.isProviderEnabled(LocationManager.GPS_PROVIDER)&& status.isProviderEnabled(LocationManager.NETWORK_PROVIDER))
{
//如果GPS或網路定位開啟，呼叫locationServiceInitial()更新位置
if(mGoogleApiClient != null){
if(mGoogleApiClient.isConnected()){
getMyLocation();
}else{
Toast.makeText(MainActivity.this,
"!mGoogleApiClient.isConnected()", Toast.LENGTH_LONG).show();
}
}else{
Toast.makeText(MainActivity.this,
"mGoogleApiClient == null", Toast.LENGTH_LONG).show();
}
} else {
Toast.makeText(MainActivity.this,"請開啟定位",Toast.LENGTH_LONG).show();
getService = true; //確認開啟定位服務
startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS)); //開啟設定頁面
}
}
};
private void getMyLocation(){
try{
/* code should explicitly check to see if permission is available
(with 'checkPermission') or explicitly handle a potential 'SecurityException'
*/
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (mLastLocation != null) {
textLastLocation.setText(
String.valueOf(mLastLocation.getLatitude()) + "\n"
+ String.valueOf(mLastLocation.getLongitude()));
Toast.makeText(MainActivity.this,
String.valueOf(mLastLocation.getLatitude()) + "\n"
+ String.valueOf(mLastLocation.getLongitude()),
Toast.LENGTH_LONG).show();
}else{
Toast.makeText(MainActivity.this,
"mLastLocation == null",
Toast.LENGTH_LONG).show();
}
} catch (SecurityException e){
Toast.makeText(MainActivity.this,
"SecurityException:\n" + e.toString(),
Toast.LENGTH_LONG).show();
}
}
@Override
protected void onStart() {
mGoogleApiClient.connect();
super.onStart();
}
@Override
protected void onStop() {
mGoogleApiClient.disconnect();
super.onStop();
}
@Override
public void onConnected(@Nullable Bundle bundle) {
getMyLocation();
}
@Override
public void onConnectionSuspended(int i) {
Toast.makeText(MainActivity.this,
"onConnectionSuspended: " + String.valueOf(i),
Toast.LENGTH_LONG).show();
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
Toast.makeText(MainActivity.this,
"onConnectionFailed: \n" + connectionResult.toString(),
Toast.LENGTH_LONG).show();
}
}
PS:Android 6.0因為安全性的關係，不能在像之前那樣容易取得權限，必須要在程式裡新增取得權限的code，變得很麻煩
而且還有重疊圖層的問題出現....就算把顯示於頂端的應用程式全關掉，也還是不行 T.T
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