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MainActivity.java
/* * Copyright 2016, The Android Open Source Project * * 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.example.android.testing.espresso.RecyclerViewSample; import android.app.Activity; import android.os.Bundle; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import java.util.ArrayList; import java.util.List; /** * Shows a list using a RecyclerView. */ public class MainActivity extends Activity { private static final int DATASET_COUNT = 50; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Create a RecyclerView, a LayoutManager, a data Adapter and wire everything up. RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView); LinearLayoutManager layoutManager = new LinearLayoutManager(getApplicationContext()); recyclerView.setLayoutManager(layoutManager); List
dataSet = new ArrayList<>(DATASET_COUNT); for (int i = 0; i < DATASET_COUNT; i++) { dataSet.add(getString(R.string.item_element_text) + i); } CustomAdapter adapter = new CustomAdapter(dataSet, getApplicationContext()); recyclerView.setAdapter(adapter); } }