问题描述
我想问用户他是否要授予访问其精细位置的权限，并且只有在他授予该权限后，我才想替换一个片段并打开定位器片段.在定位器片段中，用户可以根据自己的位置看到一些商店.如果他不允许访问精确的位置，我想向他显示正确的消息.这是代码:
I want to ask user does he want to grant a permission to accces his fine location and only if he grant it I want to replace a fragment and open the locator fragment. In locator fragments there are some stores that user can see based on his location. If he doesn't allow access to fine location I want to show him proper message. This is the code:
else if (id == R.id.nav_locator) {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
1);
fragment = new LocatorFragment();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.fragmentlayout, fragment);
ft.commit();
应用程序当前崩溃是因为它会立即开始替换片段，而崩溃则是因为它在用户选择批准或不批准位置之前进行替换.
Application is currently crashing because it will instantly start to replace fragment and it will crash because it replace before the user choose to approve or not approve location.
因此，基本上，我需要一些循环的想法或某些，如果他选择不允许用户访问并向他显示足够的消息，它们将忽略用户请求.如果他选择授予，那么我需要像平常一样替换片段.
So basically i need some loop idea or something that will ignore user request if he choose not to allow permission and show him adequate message. And if he choose to grant then I need to replace fragment like ordinary.
推荐答案
请检查以下解决方案，希望它能为您正常工作.
Please check below solution, hope it will work properly for you.
else if (id == R.id.nav_locator)
{
int result = ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION);
if (result == PackageManager.PERMISSION_GRANTED){
goToNextFragment();
} else {
requestForLocationPermission();
}
}
private void requestForLocationPermission()
{
if (ActivityCompat.shouldShowRequestPermissionRationale(activity,Manifest.permission.ACCESS_FINE_LOCATION))
{
}
else {
ActivityCompat.requestPermissions(activity,new String[]{Manifest.permission.ACCESS_FINE_LOCATION},PERMISSION_REQUEST_CODE);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults)
{
switch (requestCode) {
case PERMISSION_REQUEST_CODE:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
goToNextFragment();
}
break;
}
}
public void goToNextFragment()
{
Fragment fragment = new LocatorFragment();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.fragmentlayout, fragment);
ft.commit();
}
这篇关于允许精细位置权限来替换片段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！