Alexander Lucas | 3b4da72 | 2013-11-21 12:45:31 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 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 | |
| 17 | package com.example.android.networkconnect; |
| 18 | |
| 19 | import android.os.Bundle; |
| 20 | import android.support.v4.app.Fragment; |
| 21 | import android.util.Log; |
| 22 | import android.view.Gravity; |
| 23 | import android.view.LayoutInflater; |
| 24 | import android.view.View; |
| 25 | import android.view.ViewGroup; |
| 26 | import android.widget.TextView; |
| 27 | |
| 28 | /** |
| 29 | * Simple fragment containing only a TextView. Used by TextPagerAdapter to create |
| 30 | * tutorial-style pages for apps. |
| 31 | */ |
| 32 | public class SimpleTextFragment extends Fragment { |
| 33 | |
| 34 | // Contains the text that will be displayed by this Fragment |
| 35 | String mText; |
| 36 | |
| 37 | // Contains a resource ID for the text that will be displayed by this fragment. |
| 38 | int mTextId = -1; |
| 39 | |
| 40 | // Keys which will be used to store/retrieve text passed in via setArguments. |
| 41 | public static final String TEXT_KEY = "text"; |
| 42 | public static final String TEXT_ID_KEY = "text_id"; |
| 43 | |
| 44 | // For situations where the app wants to modify text at Runtime, exposing the TextView. |
| 45 | private TextView mTextView; |
| 46 | |
| 47 | public SimpleTextFragment() { |
| 48 | } |
| 49 | |
| 50 | @Override |
| 51 | public View onCreateView(LayoutInflater inflater, ViewGroup container, |
| 52 | Bundle savedInstanceState) { |
| 53 | // Before initializing the textView, check if any arguments were provided via setArguments. |
| 54 | processArguments(); |
| 55 | |
| 56 | // Create a new TextView and set its text to whatever was provided. |
| 57 | mTextView = new TextView(getActivity()); |
| 58 | mTextView.setGravity(Gravity.CENTER); |
| 59 | |
| 60 | if (mText != null) { |
| 61 | mTextView.setText(mText); |
| 62 | Log.i("SimpleTextFragment", mText); |
| 63 | } |
| 64 | return mTextView; |
| 65 | } |
| 66 | |
| 67 | public TextView getTextView() { |
| 68 | return mTextView; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Changes the text for this TextView, according to the resource ID provided. |
| 73 | * @param stringId A resource ID representing the text content for this Fragment's TextView. |
| 74 | */ |
| 75 | public void setText(int stringId) { |
| 76 | getTextView().setText(getActivity().getString(stringId)); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Processes the arguments passed into this Fragment via setArguments method. |
| 81 | * Currently the method only looks for text or a textID, nothing else. |
| 82 | */ |
| 83 | public void processArguments() { |
| 84 | // For most objects we'd handle the multiple possibilities for initialization variables |
| 85 | // as multiple constructors. For Fragments, however, it's customary to use |
| 86 | // setArguments / getArguments. |
| 87 | if (getArguments() != null) { |
| 88 | Bundle args = getArguments(); |
| 89 | if (args.containsKey(TEXT_KEY)) { |
| 90 | mText = args.getString(TEXT_KEY); |
| 91 | Log.d("Constructor", "Added Text."); |
| 92 | } else if (args.containsKey(TEXT_ID_KEY)) { |
| 93 | mTextId = args.getInt(TEXT_ID_KEY); |
| 94 | mText = getString(mTextId); |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | } |