FragmentCustomAnimationSupport.java revision fa2e2acf79d791a90410025daad438968550d18c 
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 android.os.Bundle;
20import android.support.v4.app.Fragment;
21import android.support.v4.app.FragmentActivity;
22import android.support.v4.app.FragmentTransaction;
23import android.support.v4.content.ContextCompat;
24import android.support.v4.view.ViewCompat;
25import android.view.LayoutInflater;
26import android.view.View;
27import android.view.View.OnClickListener;
28import android.view.ViewGroup;
29import android.widget.Button;
30import android.widget.TextView;
31
32import com.example.android.supportv4.R;
33
34public class FragmentCustomAnimationSupport extends FragmentActivity {
35    int mStackLevel = 1;
36
37    @Override
38    protected void onCreate(Bundle savedInstanceState) {
39        super.onCreate(savedInstanceState);
40        setContentView(R.layout.fragment_stack);
41
42        // Watch for button clicks.
43        Button button = findViewById(R.id.new_fragment);
44        button.setOnClickListener(new OnClickListener() {
45            @Override
46            public void onClick(View v) {
47                addFragmentToStack();
48            }
49        });
50
51        if (savedInstanceState == null) {
52            // Do first time initialization -- add initial fragment.
53            Fragment newFragment = CountingFragment.newInstance(mStackLevel);
54            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
55            ft.add(R.id.simple_fragment, newFragment).commit();
56        } else {
57            mStackLevel = savedInstanceState.getInt("level");
58        }
59    }
60
61    @Override
62    public void onSaveInstanceState(Bundle outState) {
63        super.onSaveInstanceState(outState);
64        outState.putInt("level", mStackLevel);
65    }
66
67//BEGIN_INCLUDE(add_stack)
68    void addFragmentToStack() {
69        mStackLevel++;
70
71        // Instantiate a new fragment.
72        Fragment newFragment = CountingFragment.newInstance(mStackLevel);
73
74        // Add the fragment to the activity, pushing this transaction
75        // on to the back stack.
76        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
77        ft.setCustomAnimations(R.anim.fragment_slide_left_enter,
78                R.anim.fragment_slide_left_exit,
79                R.anim.fragment_slide_right_enter,
80                R.anim.fragment_slide_right_exit);
81        ft.replace(R.id.simple_fragment, newFragment);
82        ft.addToBackStack(null);
83        ft.commit();
84    }
85//END_INCLUDE(add_stack)
86
87//BEGIN_INCLUDE(fragment)
88    public static class CountingFragment extends Fragment {
89        int mNum;
90
91        /**
92         * Create a new instance of CountingFragment, providing "num"
93         * as an argument.
94         */
95        static CountingFragment newInstance(int num) {
96            CountingFragment f = new CountingFragment();
97
98            // Supply num input as an argument.
99            Bundle args = new Bundle();
100            args.putInt("num", num);
101            f.setArguments(args);
102
103            return f;
104        }
105
106        /**
107         * When creating, retrieve this instance's number from its arguments.
108         */
109        @Override
110        public void onCreate(Bundle savedInstanceState) {
111            super.onCreate(savedInstanceState);
112            mNum = getArguments() != null ? getArguments().getInt("num") : 1;
113        }
114
115        /**
116         * The Fragment's UI is just a simple text view showing its
117         * instance number.
118         */
119        @Override
120        public View onCreateView(LayoutInflater inflater, ViewGroup container,
121                Bundle savedInstanceState) {
122            View v = inflater.inflate(R.layout.hello_world, container, false);
123            View tv = v.findViewById(R.id.text);
124            ((TextView) tv).setText("Fragment #" + mNum);
125            ViewCompat.setBackground(tv,
126                    ContextCompat.getDrawable(getContext(), android.R.drawable.gallery_thumb));
127            return v;
128        }
129    }
130//END_INCLUDE(fragment)
131}
132