这是因为 Marshmallow 添加了额外的功能。您需要在运行时向用户请求。为此,请使用我制作的这个课程。然后在需要的地方使用它
public class AppPermission {
public static boolean isMarshmallowPlusDevice() {
return Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP_MR1;
}
@TargetApi(Build.VERSION_CODES.M)
public static boolean isPermissionRequestRequired(Activity activity, @NonNull String[] permissions, int requestCode) {
if (isMarshmallowPlusDevice() && permissions.length > 0) {
List<String> newPermissionList = new ArrayList<>();
for (String permission : permissions) {
if (PackageManager.PERMISSION_GRANTED != activity.checkSelfPermission(permission)) {
newPermissionList.add(permission);
}
}
if (newPermissionList.size() > 0) {
activity.requestPermissions(newPermissionList.toArray(new String[newPermissionList.size()]), requestCode);
return true;
}
}
return false;
}
}
然后将此代码放在需要用户许可的位置。
if (!AppPermission.isPermissionRequestRequired(SignInActivity.this, new String[]{"android.permission.GET_ACCOUNTS"},
REQUEST_APP_PERMISSION)) {
// Your code if permission available
}
此后,在您的Fragment
or Activity
把这个代码-
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case REQUEST_APP_PERMISSION:
for (int i = 0; i < permissions.length; i++) {
String permission = permissions[i];
int grantResult = grantResults[i];
switch (permission) {
case "android.permission.GET_ACCOUNTS":
if (PackageManager.PERMISSION_GRANTED == grantResult) {
// Your code
}
break;
}
}
break;
}
}
上面的代码用于请求权限GET_ACCOUNTS
您可以将其更改为任何需要的内容。