i'm developing app on android and my app contains many third party library dependencies such as gson, okHttp, Picasso etc.
1) so do i need to mention in my app that i have used this libraries in my app?
2) what it means by Licensed under the Apache License?
3) what if i don't add dependency and direct copy the library files or include library module to my app?
4) what is the meaning of
Copyright 2016 .......
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
do i need to get license to use this?