●程式說明：
1.gradle要加：compile 'com.google.android.gms:play-services:11.0.4'
設定權限：<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
2.
public class MainActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
private String[] mPermissions = new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION};
private static final int MY_PERMISSIONS_REQUEST_READ_CONTACTS = 100; //permission RequestCode
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
alertPermissions(this);
}
@Override
public void onConnected(@Nullable Bundle bundle) {
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(this,
android.Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
return;
}
}
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation != null)
{
// 取到手機地點後的程式碼
Toast.makeText(this,"GPS Location:" + mLastLocation.getLatitude() + "," + mLastLocation.getLongitude(),Toast.LENGTH_SHORT).show();
// Log.d("GPS", "Location:" + mLastLocation.getLatitude() + "," + mLastLocation.getLongitude());
}
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
public synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(getBaseContext())
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
//***************************權限相關***********************************
//判斷sdk版本是否會彈跳出權限對話框
public boolean isPoupUpPermissions() {
//Build.VERSION.SDK_INT 取得目前sdk版本
//android 6.0=23 因為23以上才會跳出權限對話框
return Build.VERSION.SDK_INT >= 23;
}
//判斷是否已經有權限
public boolean hasPermissions(Context context, String permission) {
if (!isPoupUpPermissions()) { //sdk 23以下當作已經有取得權限
return true;
}
//確認權限是否為PERMISSION_GRANTED
if (ContextCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
return false;
}
buildGoogleApiClient();
return true;
}
//請求權限(已擁有權限－PERMISSION_GRANTED ,無權限－PERMISSION_DENIED)
private void alertPermissions(Activity context) {
final ArrayList<String> unsatisfiedPermissions = new ArrayList<>(); //用來儲存未取得的權限
for (String permission : mPermissions) {
if (!hasPermissions(context, permission)) {
//如果某個permission檢查後為PackageManager.PERMISSION_DENIED，就加到unsatisfiedPermissions arrayListy中
unsatisfiedPermissions.add(permission);
}
}
//將unsatisfiedPermissions 轉成 string array，並且對array中的每個permission做request
if (unsatisfiedPermissions.size() != 0) {//當所有權限皆允許時unsatisfiedPermissions.size()=0 ，此時不需要requestPermissions
ActivityCompat.requestPermissions(context, unsatisfiedPermissions.toArray(new String[unsatisfiedPermissions.size()]), MY_PERMISSIONS_REQUEST_READ_CONTACTS);
}
}
}
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