Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Context context = (Permission) this;
// In an actual app, you'd want to request a permission when the user
// performs an action
// that requires that permission.
if (Build.VERSION.SDK_INT >= 23) {
getPermissionToReadUserContacts();
}
}
// Identifier for the permission request
private static final int READ_CONTACTS_PERMISSIONS_REQUEST = 1;
// Called when the user is performing an action which requires the app to
// read the
// user's contacts
public void getPermissionToReadUserContacts() {
// 1) Use the support library version
// ContextCompat.checkSelfPermission(...) to avoid
// checking the build version since Context.checkSelfPermission(...) is
// only available
// in Marshmallow
// 2) Always check for permission (even if permission has already been
// granted)
// since the user can revoke permissions at any time through Settings
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.READ_CONTACTS)) {
// Show an expanation 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.
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this,
new String[] { Manifest.permission.READ_CONTACTS },
READ_CONTACTS_PERMISSIONS_REQUEST);
// MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
// app-defined int constant. The callback method gets the
// result of the request.
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case READ_CONTACTS_PERMISSIONS_REQUEST: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this, "Read Contacts permission granted",
Toast.LENGTH_SHORT).show();
// permission was granted, yay! Do the
// contacts-related task you need to do.
} else {
Toast.makeText(this, "Read Contacts permission denied",
Toast.LENGTH_SHORT).show();
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
// Callback with the request from calling requestPermissions(...)
/*
* @Override public void onRequestPermissionsResult(int requestCode, String
* permissions[], int[] grantResults) { // Make sure it's our original
* READ_CONTACTS request if (requestCode ==
* READ_CONTACTS_PERMISSIONS_REQUEST) { if (grantResults.length == 1 &&
* grantResults[0] == PackageManager.PERMISSION_GRANTED) {
* Toast.makeText(this, "Read Contacts permission granted",
* Toast.LENGTH_SHORT).show(); } else { Toast.makeText(this,
* "Read Contacts permission denied", Toast.LENGTH_SHORT).show(); } } else {
* super.onRequestPermissionsResult(requestCode, permissions, grantResults);
* } }
*/
Когда я пробую это в демонстрационном приложении, оно работает нормально. Но когда я включаю в проект, оно выдает ошибку в качестве заголовка. Любая помощь будет оценена. Я так думаю из-за контекста. ................................................. ................................................. ................................................. ................................................. ................................................. ................................................. ..............................................
