Android 10 中的运行时位置权限问题

Question

我正在构建一个应用程序，我需要在其中实现Google Map API。在所有安卓版本中，应用程序都按预期工作，但在 SDK 29 或安卓 10 中它不起作用。每次我授予位置权限时，它都会再次要求位置权限，我什至手动授予权限，但仍然不起作用。这是我的代码：

public boolean checkLocationPermission() {
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.ACCESS_FINE_LOCATION)) {
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
new AlertDialog.Builder(this)
.setTitle("Grant Permission")
.setMessage("Location Permission Required")
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
//Prompt the user once explanation has been shown
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
}
})
.create()
.show();

} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
}
return false;
} else {
return true;
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// location-related task you need to do.
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
//Request location updates:
locationManager.requestLocationUpdates(provider, 400, 1, this);
}
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
return;
}
}

我在活动中调用此方法。

Answer 1

1( 在 menifest

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

2( 内部活动

I( 全局定义内部活动

private static final int PERMISSION_CALLBACK_CONSTANT = 105;
private SharedPreferences permissionStatus;
String[] permissionsRequired = new String[]{
Manifest.permission.ACCESS_FINE_LOCATION
, Manifest.permission.ACCESS_COARSE_LOCATION
, Manifest.permission.ACCESS_BACKGROUND_LOCATION
};

二(

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
permissionStatus = getSharedPreferences("permissionStatus", MODE_PRIVATE);
checkPermission();
}

三(创建方法

public void checkPermission() {
if (ActivityCompat.checkSelfPermission(BaseMapActivity.this, permissionsRequired[0]) != PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission(BaseMapActivity.this, permissionsRequired[1]) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(BaseMapActivity.this, permissionsRequired[0]) || ActivityCompat.shouldShowRequestPermissionRationale(BaseMapActivity.this, permissionsRequired[1])) {
boolean foreground = ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED;
boolean background = ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_BACKGROUND_LOCATION) == PackageManager.PERMISSION_GRANTED;
if (foreground || background) {
proceedAfterPermission();
} else {
androidx.appcompat.app.AlertDialog.Builder builder = new androidx.appcompat.app.AlertDialog.Builder(BaseMapActivity.this);
builder.setTitle("Need App Location Permission");
builder.setMessage("App name need location permission to show your current location.");
builder.setPositiveButton("Grant", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
ActivityCompat.requestPermissions(BaseMapActivity.this, permissionsRequired, PERMISSION_CALLBACK_CONSTANT);
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
finish();
}
});
builder.show();
}
} else if (permissionStatus.getBoolean(permissionsRequired[0], false) && permissionStatus.getBoolean(permissionsRequired[1], false)) {
boolean foreground = ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED;
boolean background = ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_BACKGROUND_LOCATION) == PackageManager.PERMISSION_GRANTED;
if (foreground || background) {
proceedAfterPermission();
} else {
androidx.appcompat.app.AlertDialog.Builder builder = new androidx.appcompat.app.AlertDialog.Builder(BaseMapActivity.this);
builder.setTitle("GPS Not Enabled");
builder.setMessage("Enable GPS from your setting");
builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
sentToSettings = false;
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
}
} else {
ActivityCompat.requestPermissions(BaseMapActivity.this, permissionsRequired, PERMISSION_CALLBACK_CONSTANT);
}
SharedPreferences.Editor editor = permissionStatus.edit();
editor.putBoolean(permissionsRequired[0], true);
editor.commit();
} else {
proceedAfterPermission();
}
}

四(

@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
if (requestCode == PERMISSION_CALLBACK_CONSTANT) {
boolean allgranted = false;
for (int i = 0; i < grantResults.length; i++) {
if (grantResults[i] == PackageManager.PERMISSION_GRANTED) {
allgranted = true;
} else {
allgranted = false;
break;
}
}
if (allgranted) {
proceedAfterPermission();
} else if (ActivityCompat.shouldShowRequestPermissionRationale(BaseMapActivity.this, permissionsRequired[0])
|| ActivityCompat.shouldShowRequestPermissionRationale(BaseMapActivity.this, permissionsRequired[1])
) {
boolean foreground = ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED;
boolean background = ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_BACKGROUND_LOCATION) == PackageManager.PERMISSION_GRANTED;
if (foreground || background) {
proceedAfterPermission();
} else {
androidx.appcompat.app.AlertDialog.Builder builder = new AlertDialog.Builder(BaseMapActivity.this);
builder.setTitle("Need App Location Permission");
builder.setMessage("App name need location permission to show your current location");
builder.setPositiveButton("Grant", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
ActivityCompat.requestPermissions(BaseMapActivity.this, permissionsRequired, PERMISSION_CALLBACK_CONSTANT);
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
finish();
}
});
builder.show();
}
} else {
proceedAfterPermission();
}
}
}

五(

private void proceedAfterPermission() {
//Do your stuff after permission
}