Android 无法授予FINE_位置权限
你好，我正在构建一个应用程序，我想访问手机的位置。然而，我似乎无法授予访问精细位置权限，因此我的应用程序无法在我正在测试的Android M手机上运行。 以下是我代码的一部分：Android 无法授予FINE_位置权限,android,android-permissions,android-location,Android,Android Permissions,Android Location,你好，我正在构建一个应用程序，我想访问手机的位置。然而，我似乎无法授予访问精细位置权限，因此我的应用程序无法在我正在测试的Android M手机上运行。 以下是我代码的一部分： public class LocationMainActivity extends AppCompatActivity { private ListView listView; private static final String EXTERNAL_PERMISSIONS[] = new String[]{
public class LocationMainActivity extends AppCompatActivity {
private ListView listView;
private static final String EXTERNAL_PERMISSIONS[] = new String[]{
Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.INTERNET};
private static final int EXTERNAL_CODE=1;
private boolean perm;
private Cursor cursor;
private DatabaseAdapt dbAdapt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_location_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar4);
setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
listView = (ListView)findViewById(R.id.locationContainer);
dbAdapt = new DatabaseAdapt(this);
dbAdapt.open();
cursor =dbAdapt.loadLocationTitles();
String [] from = new String[]{DatabaseAdapt.LOCATION_TITLE};
int [] to = new int[] {android.R.id.text1};
CursorAdapter cursorAdapter = new SimpleCursorAdapter(this,android.R.layout.simple_list_item_1,cursor,
from,to,0);
listView.setAdapter(cursorAdapter);
}
public void onDestroy(){
super.onDestroy();
cursor.close();
dbAdapt.close();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main,menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if(id==R.id.add_button);{
askForPerm();
if(perm){
Intent intent = new Intent(LocationMainActivity.this,LocationSecondActivity.class);
startActivity(intent);
}
else {
askForPerm();
}
}
return super.onOptionsItemSelected(item);
}
private void askForPerm () {
// if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
int w = ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION);
int r = ContextCompat.checkSelfPermission(this, Manifest.permission.INTERNET);
if (w != PackageManager.PERMISSION_GRANTED && r != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, EXTERNAL_PERMISSIONS, EXTERNAL_CODE);
} else {
Toast.makeText(this, "Permissions already granted", Toast.LENGTH_SHORT).show();
perm=true;
}
}
@Override
public void onRequestPermissionsResult(int requestCode,String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode){
case EXTERNAL_CODE:
if(ActivityCompat.checkSelfPermission(this,permissions[0])==PackageManager.PERMISSION_GRANTED)
{
perm=true;
}
else {
Toast.makeText(this,"Permissions denied",Toast.LENGTH_LONG).show();
perm=false;
}
break;
}
}
}
private EditText editTitleLocation, addressText, latText,longText;
private Button saveLocationButton, deleteLocationButton, navigateButton,findLocationButton;
private static final int UPDATE_TIME = 15000;
private static final int FASTER_UPDATE_TIME = 10000;
private GoogleApiClient myGoogleApi;
private Location location;
private LocationRequest myLocationRequest;
private static final int CHECK_CODE=1;
private double longitude,latitude;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_location_second);
ActionBar actionBar = getSupportActionBar();
actionBar.setHomeButtonEnabled(true);
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setDisplayShowHomeEnabled(true);
initializeViews();
buildGoogleApi();
}
private void initializeViews(){
editTitleLocation = (EditText)findViewById(R.id.editTitleLocation);
addressText = (EditText)findViewById(R.id.addressText);
latText = (EditText)findViewById(R.id.latitudeText);
longText=(EditText)findViewById(R.id.longitudeText);
saveLocationButton = (Button)findViewById(R.id.saveLocation);
deleteLocationButton = (Button)findViewById(R.id.deleteLocation);
findLocationButton = (Button)findViewById(R.id.findLocation);
navigateButton= (Button)findViewById(R.id.navigateLocation);
saveLocationButton.setOnClickListener(this);
deleteLocationButton.setOnClickListener(this);
findLocationButton.setOnClickListener(this);
navigateButton.setOnClickListener(this);
}
public void onStart(){
super.onStart();
if(myGoogleApi!=null){
myGoogleApi.connect();
}
}
public void onPause(){
super.onPause();
if(myGoogleApi!=null)
LocationServices.FusedLocationApi.removeLocationUpdates(myGoogleApi,LocationSecondActivity.this);
}
public void onStop(){
super.onStop();
myGoogleApi.disconnect();
}
private synchronized void buildGoogleApi(){
myGoogleApi = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API).build();
}
private void createRequest (){
myLocationRequest = new LocationRequest();
myLocationRequest.setInterval(UPDATE_TIME)
.setFastestInterval(FASTER_UPDATE_TIME)
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder().addLocationRequest(myLocationRequest);
PendingResult<LocationSettingsResult> result = LocationServices.SettingsApi.checkLocationSettings(myGoogleApi,builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult result) {
final Status status = result.getStatus();
switch (status.getStatusCode()){
case LocationSettingsStatusCodes.SUCCESS:
retrieveLocation();
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
try{
status.startResolutionForResult(LocationSecondActivity.this,CHECK_CODE);
}catch (IntentSender.SendIntentException e){
e.printStackTrace();
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
Toast.makeText(LocationSecondActivity.this,"Settings Change Unavailable",Toast.LENGTH_SHORT).show();
break;
}
}
});
}
private void retrieveLocation(){
try {
location = LocationServices.FusedLocationApi.getLastLocation(myGoogleApi);
}catch (SecurityException ex){
ex.printStackTrace();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode){
case CHECK_CODE:
switch (requestCode){
case Activity.RESULT_OK:
retrieveLocation();
break;
case Activity.RESULT_CANCELED:
break;
}
break;
}
}
@Override
public void onConnected(Bundle bundle) {
createRequest();
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Toast.makeText(this,"Google Api can not connect",Toast.LENGTH_LONG).show();
}
@Override
public void onLocationChanged(Location location) {
this.location=location;
longitude=location.getLongitude();
latitude=location.getLatitude();
}
@Override
public void onClick(View v) {
int id = v.getId();
switch (id){
case R.id.saveLocation:
break;
case R.id.deleteLocation:
break;
case R.id.navigateLocation:
break;
case R.id.findLocation:
if(location!=null){
latitude = location.getLatitude();
Log.e("MALAKIS",String.valueOf(latitude));
longitude=location.getLongitude();
latText.setText(String.valueOf(latitude));
longText.setText(String.valueOf(longitude));
}else {
if(!myGoogleApi.isConnected()){
myGoogleApi.connect();
Log.e("ELSE","fdsfddsd");
}
try {
LocationServices.FusedLocationApi.requestLocationUpdates(myGoogleApi, myLocationRequest, this);
}catch (SecurityException ex){
ex.printStackTrace();
}
}
break;
}
}
将以下代码放入askForPerm（）方法中：-
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(30 * 1000);
locationRequest.setFastestInterval(5 * 1000);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
builder.setAlwaysShow(true); //this is the key ingredient
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult result) {
final Status status = result.getStatus();
final LocationSettingsStates state = result.getLocationSettingsStates();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied. The client can initialize location
// requests here.
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. But could be fixed by showing the user
// a dialog.
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
status.startResolutionForResult(MainActivity.this, REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are not satisfied. However, we have no way to fix the
// settings so we won't show the dialog.
break;
}
}
});
LocationRequest LocationRequest=LocationRequest.create（）；
locationRequest.setPriority（locationRequest.PRIORITY\u高精度）；
位置请求设置间隔（30*1000）；
locationRequest.SetFastTestInterval（5*1000）；
LocationSettingsRequest.Builder=新建LocationSettingsRequest.Builder（）
.addLocationRequest（locationRequest）；
builder.setAlwaysShow（true）//这是关键成分
Pendingreult结果=
LocationServices.SettingsApi.checkLocationSettings（GoogleAppClient，builder.build（））；
result.setResultCallback（新的ResultCallback（）{
@凌驾
公共void onResult（位置设置结果）{
最终状态状态=result.getStatus（）；
最终位置SettingsStates状态=结果。getLocationSettingsStates（）；
开关（status.getStatusCode（））{
案例位置设置StatusCodes.SUCCESS：
//满足所有位置设置。客户端可以初始化位置
//请求在这里。
打破
案例位置设置StatusCodes.RESOLUTION_要求：
//不满足位置设置。但可以通过显示用户来修复
//对话。
试一试{
//通过调用startResolutionForResult（）显示对话框，
//并在onActivityResult（）中检查结果。
status.startResolutionForResult（MainActivity.this，请求检查设置）；
}catch（IntentSender.sendtintentexe）{
//忽略错误。
}
打破
案例位置设置StatusCodes.SETTINGS\u CHANGE\u不可用：
//位置设置不满意。但是，我们无法修复此问题
//设置，这样我们就不会显示对话框。
打破
}
}
});
试试这个！！它在我的应用程序中工作。安全位置被触发，指出我没有精细位置权限。。。这是运行时异常还是IDE/Lint警告。。。我敢打赌警告。。。它与getLastLocation可能返回null这一事实无关，您必须接受一件小事来检查，您的and元素需要在它之外。它们应该是根元素的直接子元素。有时，当你在应用程序启动时将它们放在里面时，例如，该位置将已在使用中，并导致类似的问题。我已编辑了我的问题，还包括日志。权限不在许可范围内。在安卓5.0上测试时，我可以得到坐标，但在安卓6.0上无法得到坐标。您的目标版本是什么。我需要在retrieveLocation方法中请求权限，它成功了。我修改了代码，在第二个活动中请求了权限，它成功了。我还想问一个问题。是否可以检查用户是否连接到wifi或网络，并提示他启用internet连接？因为我使用的设置api仅提示用户启用对其位置的访问Yes您可以检查：-public boolean isConnected（）{ConnectivityManager connMgr=（ConnectivityManager）getSystemService（Activity.CONNECTIVITY_SERVICE）；NetworkInfo NetworkInfo=connMgr.getActiveNetworkInfo（）；if（NetworkInfo！=null&&NetworkInfo.isConnected（））返回true；否则返回false；}
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(30 * 1000);
locationRequest.setFastestInterval(5 * 1000);
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest);
builder.setAlwaysShow(true); //this is the key ingredient
PendingResult<LocationSettingsResult> result =
LocationServices.SettingsApi.checkLocationSettings(googleApiClient, builder.build());
result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
@Override
public void onResult(LocationSettingsResult result) {
final Status status = result.getStatus();
final LocationSettingsStates state = result.getLocationSettingsStates();
switch (status.getStatusCode()) {
case LocationSettingsStatusCodes.SUCCESS:
// All location settings are satisfied. The client can initialize location
// requests here.
break;
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
// Location settings are not satisfied. But could be fixed by showing the user
// a dialog.
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
status.startResolutionForResult(MainActivity.this, REQUEST_CHECK_SETTINGS);
} catch (IntentSender.SendIntentException e) {
// Ignore the error.
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
// Location settings are not satisfied. However, we have no way to fix the
// settings so we won't show the dialog.
break;
}
}
});