FragmentArgumentsSupport.java revision c644c91b91b83a6b400a57b02671f4ef7b7a810b 
1/*
2 * Copyright (C) 2011 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.supportv4.app;
18
19import com.example.android.supportv4.R;
20
21import android.support.v4.app.FragmentActivity;
22import android.support.v4.app.Fragment;
23import android.support.v4.app.FragmentTransaction;
24
25import android.app.Activity;
26import android.content.res.TypedArray;
27import android.os.Bundle;
28import android.util.AttributeSet;
29import android.view.LayoutInflater;
30import android.view.View;
31import android.view.ViewGroup;
32import android.widget.TextView;
33
34/**
35 * Demonstrates a fragment that can be configured through both Bundle arguments
36 * and layout attributes.
37 */
38public class FragmentArgumentsSupport extends FragmentActivity {
39//BEGIN_INCLUDE(create)
40    @Override protected void onCreate(Bundle savedInstanceState) {
41        super.onCreate(savedInstanceState);
42        setContentView(R.layout.fragment_arguments_support);
43
44        if (savedInstanceState == null) {
45            // First-time init; create fragment to embed in activity.
46            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
47            Fragment newFragment = MyFragment.newInstance("From Arguments");
48            ft.add(R.id.created, newFragment);
49            ft.commit();
50        }
51    }
52//END_INCLUDE(create)
53
54//BEGIN_INCLUDE(fragment)
55    public static class MyFragment extends Fragment {
56        CharSequence mLabel;
57
58        /**
59         * Create a new instance of MyFragment that will be initialized
60         * with the given arguments.
61         */
62        static MyFragment newInstance(CharSequence label) {
63            MyFragment f = new MyFragment();
64            Bundle b = new Bundle();
65            b.putCharSequence("label", label);
66            f.setArguments(b);
67            return f;
68        }
69
70        /**
71         * Parse attributes during inflation from a view hierarchy into the
72         * arguments we handle.
73         */
74        @Override public void onInflate(Activity activity, AttributeSet attrs,
75                Bundle savedInstanceState) {
76            super.onInflate(activity, attrs, savedInstanceState);
77
78            TypedArray a = activity.obtainStyledAttributes(attrs,
79                    R.styleable.FragmentArguments);
80            mLabel = a.getText(R.styleable.FragmentArguments_android_label);
81            a.recycle();
82        }
83
84        /**
85         * During creation, if arguments have been supplied to the fragment
86         * then parse those out.
87         */
88        @Override public void onCreate(Bundle savedInstanceState) {
89            super.onCreate(savedInstanceState);
90
91            Bundle args = getArguments();
92            if (args != null) {
93                CharSequence label = args.getCharSequence("label");
94                if (label != null) {
95                    mLabel = label;
96                }
97            }
98        }
99
100        /**
101         * Create the view for this fragment, using the arguments given to it.
102         */
103        @Override public View onCreateView(LayoutInflater inflater, ViewGroup container,
104                Bundle savedInstanceState) {
105            View v = inflater.inflate(R.layout.hello_world, container, false);
106            View tv = v.findViewById(R.id.text);
107            ((TextView)tv).setText(mLabel != null ? mLabel : "(no label)");
108            tv.setBackgroundDrawable(getResources().getDrawable(android.R.drawable.gallery_thumb));
109            return v;
110        }
111    }
112//END_INCLUDE(fragment)
113}
114