实例介绍
【实例简介】
【实例截图】
【核心代码】
/* * Copyright (C) 2015 Two Toasters * * 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. */ package com.twotoasters.jazzylistview.sample; import android.app.Activity; import android.os.Bundle; import android.support.v7.widget.GridLayoutManager; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.RecyclerView.LayoutManager; import android.support.v7.widget.StaggeredGridLayoutManager; import android.view.Menu; import android.view.MenuItem; import android.widget.Toast; import com.twotoasters.jazzylistview.JazzyHelper; import com.twotoasters.jazzylistview.recyclerview.JazzyRecyclerViewScrollListener; import java.util.ArrayList; import java.util.Map; public class RecyclerViewActivity extends Activity { private static final String KEY_TRANSITION_EFFECT = "transition_effect"; private Map<String, Integer> mEffectMap; private int mCurrentTransitionEffect = JazzyHelper.HELIX; private JazzyRecyclerViewScrollListener jazzyScrollListener; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_recyclerview); setTitle(getString(getIntent().getIntExtra(MainActivity.EXTRA_TITLE_RES, 0))); int itemLayoutRes = getIntent().getIntExtra(MainActivity.EXTRA_ITEM_LAYOUT_RES, R.layout.item); boolean isStaggered = getIntent().getBooleanExtra(MainActivity.EXTRA_IS_STAGGERED, false); RecyclerView recyclerView = (RecyclerView) findViewById(R.id.list); recyclerView.setLayoutManager(createLayoutManager(itemLayoutRes, isStaggered)); recyclerView.setHasFixedSize(true); recyclerView.setAdapter(new SampleRecyclerViewAdapter(ListModel.getModel(), itemLayoutRes, isStaggered)); jazzyScrollListener = new JazzyRecyclerViewScrollListener(); recyclerView.setOnScrollListener(jazzyScrollListener); if (savedInstanceState != null) { mCurrentTransitionEffect = savedInstanceState.getInt(KEY_TRANSITION_EFFECT, JazzyHelper.HELIX); setupJazziness(mCurrentTransitionEffect); } } private LayoutManager createLayoutManager(int itemLayoutRes, boolean isStaggered) { if (itemLayoutRes == R.layout.item) { return new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false); } else { if (isStaggered) { return new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL); } else { return new GridLayoutManager(this, 2); } } } @Override public boolean onCreateOptionsMenu(Menu menu) { mEffectMap = Utils.buildEffectMap(this); Utils.populateEffectMenu(menu, new ArrayList<>(mEffectMap.keySet()), this); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { String strEffect = item.getTitle().toString(); Toast.makeText(this, strEffect, Toast.LENGTH_SHORT).show(); setupJazziness(mEffectMap.get(strEffect)); return true; } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putInt(KEY_TRANSITION_EFFECT, mCurrentTransitionEffect); } private void setupJazziness(int effect) { mCurrentTransitionEffect = effect; jazzyScrollListener.setTransitionEffect(mCurrentTransitionEffect); } }
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