LinearLayoutManagerActivity.java revision 1f30fc8732560027f364ad42bbc3f7db8aace8ad 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.example.android.supportv7.widget;
18
19import com.example.android.supportv7.widget.decorator.DividerItemDecoration;
20
21import android.support.v4.view.ViewCompat;
22import android.support.v7.widget.LinearLayoutManager;
23import android.support.v7.widget.RecyclerView;
24import com.example.android.supportv7.R;
25
26/**
27 * A sample activity that uses {@link LinearLayoutManager}.
28 */
29public class LinearLayoutManagerActivity extends BaseLayoutManagerActivity<LinearLayoutManager> {
30    private DividerItemDecoration mDividerItemDecoration;
31
32    @Override
33    protected LinearLayoutManager createLayoutManager() {
34        return new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
35    }
36
37    @Override
38    protected void onRecyclerViewInit(RecyclerView recyclerView) {
39        mDividerItemDecoration = new DividerItemDecoration(this, mLayoutManager.getOrientation());
40        recyclerView.addItemDecoration(mDividerItemDecoration);
41    }
42
43    @Override
44    BaseLayoutManagerActivity.ConfigToggle[] createConfigToggles() {
45        return new ConfigToggle[]{
46                new ConfigToggle(this, R.string.checkbox_orientation) {
47                    @Override
48                    public boolean isChecked() {
49                        return mLayoutManager.getOrientation() == LinearLayoutManager.HORIZONTAL;
50                    }
51
52                    @Override
53                    public void onChange(boolean newValue) {
54                        mLayoutManager.setOrientation(newValue ? LinearLayoutManager.HORIZONTAL
55                                : LinearLayoutManager.VERTICAL);
56                        if (mDividerItemDecoration != null) {
57                            mDividerItemDecoration.setOrientation(mLayoutManager.getOrientation());
58                        }
59
60                    }
61                },
62                new ConfigToggle(this, R.string.checkbox_reverse) {
63                    @Override
64                    public boolean isChecked() {
65                        return mLayoutManager.getReverseLayout();
66                    }
67
68                    @Override
69                    public void onChange(boolean newValue) {
70                        mLayoutManager.setReverseLayout(newValue);
71                    }
72                },
73                new ConfigToggle(this, R.string.checkbox_layout_dir) {
74                    @Override
75                    public boolean isChecked() {
76                        return ViewCompat.getLayoutDirection(mRecyclerView) ==
77                                ViewCompat.LAYOUT_DIRECTION_RTL;
78                    }
79
80                    @Override
81                    public void onChange(boolean newValue) {
82                        ViewCompat.setLayoutDirection(mRecyclerView, newValue ?
83                                ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
84                    }
85                },
86                new ConfigToggle(this, R.string.checkbox_stack_from_end) {
87                    @Override
88                    public boolean isChecked() {
89                        return mLayoutManager.getStackFromEnd();
90                    }
91
92                    @Override
93                    public void onChange(boolean newValue) {
94                        mLayoutManager.setStackFromEnd(newValue);
95                    }
96                }
97        };
98    }
99}
100