1 /*
2  * Copyright (C) 2018 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.intentplayground;
18 
19 import android.app.Activity;
20 
21 import android.content.Intent;
22 import android.os.Bundle;
23 import android.view.LayoutInflater;
24 import android.view.View;
25 import android.view.ViewGroup;
26 import android.widget.ArrayAdapter;
27 import android.widget.LinearLayout;
28 import android.widget.TextView;
29 import androidx.annotation.Nullable;
30 import androidx.fragment.app.Fragment;
31 import java.util.List;
32 import java.util.Set;
33 
34 /**
35  * Displays details about the intent that launched the current activity.
36  */
37 public class IntentFragment extends Fragment {
38     private TextView mActionTextView, mUriTextView, mTypeTextView, mPackageTextView;
39     private LinearLayout mCategoryListLayout, mFlagListLayout;
40 
41     @Nullable
42     @Override
onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState)43     public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
44                              Bundle savedInstanceState) {
45         LinearLayout layout = (LinearLayout) inflater.inflate(R.layout.fragment_intent, container,
46                 false /* attachToRoot */);
47         // Get handles to views
48         mActionTextView = layout.findViewById(R.id.intentAction);
49         mUriTextView = layout.findViewById(R.id.intentUri);
50         mTypeTextView = layout.findViewById(R.id.intentType);
51         mPackageTextView = layout.findViewById(R.id.intentPackage);
52         mCategoryListLayout = layout.findViewById(R.id.intentCategories);
53         mFlagListLayout = layout.findViewById(R.id.intentFlags);
54         return layout;
55     }
56 
57     @Override
onResume()58     public void onResume() {
59         super.onResume();
60         Activity activity = getActivity();
61         Intent intent = activity.getIntent();
62         // Get intent info
63         String action = intent.getAction();
64         String dataUri = intent.getDataString();
65         String intentType = intent.getType();
66         String intentPackage = intent.getPackage();
67         Set<String> categories = intent.getCategories();
68         List<String> flags = FlagUtils.discoverFlags(intent);
69         // set data
70         mActionTextView.setText(action);
71         mUriTextView.setText(dataUri);
72         mTypeTextView.setText(intentType);
73         mPackageTextView.setText(intentPackage);
74         if (categories != null) {
75             ArrayAdapter<String> categoryAdapter = new ArrayAdapter<>(activity,
76                     R.layout.simple_list_item,
77                     categories.toArray(new String[0]));
78             fillLayout(mCategoryListLayout, categoryAdapter);
79         }
80         ArrayAdapter<String> flagAdapter = new ArrayAdapter<>(activity,
81                 R.layout.simple_list_item, flags);
82         fillLayout(mFlagListLayout, flagAdapter);
83     }
84 
85     /**
86      * Takes a @{link ViewGroup} and uses the given adapter to fill it; used in the cases where we
87      * need a non-scrollable list that is a child of {@link android.widget.ScrollView}.
88      * @param layout The layout to be filled.
89      * @param adapter The adapter that provides the views for the layout.
90      */
fillLayout(ViewGroup layout, ArrayAdapter<?> adapter)91     private void fillLayout(ViewGroup layout, ArrayAdapter<?> adapter) {
92         layout.removeAllViews();
93         for (int i = 0; i < adapter.getCount(); i++) {
94             layout.addView(adapter.getView(i, null /* convertView */, null /* parent */));
95         }
96     }
97 }
98