Java tutorial
package cc.metapro.openct.splash.views; /* * Copyright 2016 - 2017 OpenCT open source class table * * 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. */ import android.content.Intent; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v7.app.AppCompatActivity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Spinner; import android.widget.TextView; import butterknife.BindView; import butterknife.ButterKnife; import butterknife.OnClick; import cc.metapro.openct.R; import cc.metapro.openct.splash.schoolselection.SchoolSelectionActivity; public class SchoolFragment extends Fragment implements SplashContract.SchoolView { @BindView(R.id.selection) TextView mSelection; @BindView(R.id.week) Spinner mWeek; private SplashContract.Presenter mPresenter; private boolean initialed = false; public static SchoolFragment getInstance() { return new SchoolFragment(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_school, container, false); ButterKnife.bind(this, view); initialed = true; return view; } @OnClick(R.id.selection) public void onClick() { startActivityForResult(new Intent(getContext(), SchoolSelectionActivity.class), SchoolSelectionActivity.REQUEST_SCHOOL_NAME); } @Override public void setUserVisibleHint(boolean isVisibleToUser) { if (!isVisibleToUser && initialed) { int week = mWeek.getSelectedItemPosition() + 1; mPresenter.setSelectedWeek(week); } super.setUserVisibleHint(isVisibleToUser); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode == AppCompatActivity.RESULT_OK) { if (data != null) { mPresenter.setSelectedSchool(data.getStringExtra(SchoolSelectionActivity.SCHOOL_RESULT)); } } super.onActivityResult(requestCode, resultCode, data); } @Override public void setPresenter(SplashContract.Presenter presenter) { mPresenter = presenter; } @Override public void showSelectedSchool(String name) { mSelection.setText(name); } }