FragmentCustomAnimationSupport.java revision 0157041980358a806cf32e53bd814347aa155231 
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.Fragment;
22import android.support.v4.app.FragmentActivity;
23import android.support.v4.app.FragmentTransaction;
24
25import android.os.Bundle;
26import android.view.LayoutInflater;
27import android.view.View;
28import android.view.ViewGroup;
29import android.view.View.OnClickListener;
30import android.widget.Button;
31import android.widget.TextView;
32
33public class FragmentCustomAnimationSupport extends FragmentActivity {
34    int mStackLevel = 1;
35
36    @Override
37    protected void onCreate(Bundle savedInstanceState) {
38        super.onCreate(savedInstanceState);
39        setContentView(R.layout.fragment_stack);
40
41        // Watch for button clicks.
42        Button button = (Button)findViewById(R.id.new_fragment);
43        button.setOnClickListener(new OnClickListener() {
44            public void onClick(View v) {
45                addFragmentToStack();
46            }
47        });
48
49        if (savedInstanceState == null) {
50            // Do first time initialization -- add initial fragment.
51            Fragment newFragment = CountingFragment.newInstance(mStackLevel);
52            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
53            ft.add(R.id.simple_fragment, newFragment).commit();
54        } else {
55            mStackLevel = savedInstanceState.getInt("level");
56        }
57    }
58
59    @Override
60    public void onSaveInstanceState(Bundle outState) {
61        super.onSaveInstanceState(outState);
62        outState.putInt("level", mStackLevel);
63    }
64
65//BEGIN_INCLUDE(add_stack)
66    void addFragmentToStack() {
67        mStackLevel++;
68
69        // Instantiate a new fragment.
70        Fragment newFragment = CountingFragment.newInstance(mStackLevel);
71
72        // Add the fragment to the activity, pushing this transaction
73        // on to the back stack.
74        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
75        ft.setCustomAnimations(R.anim.fragment_slide_left_enter,
76                R.anim.fragment_slide_left_exit,
77                R.anim.fragment_slide_right_enter,
78                R.anim.fragment_slide_right_exit);
79        ft.replace(R.id.simple_fragment, newFragment);
80        ft.addToBackStack(null);
81        ft.commit();
82    }
83//END_INCLUDE(add_stack)
84
85//BEGIN_INCLUDE(fragment)
86    public static class CountingFragment extends Fragment {
87        int mNum;
88
89        /**
90         * Create a new instance of CountingFragment, providing "num"
91         * as an argument.
92         */
93        static CountingFragment newInstance(int num) {
94            CountingFragment f = new CountingFragment();
95
96            // Supply num input as an argument.
97            Bundle args = new Bundle();
98            args.putInt("num", num);
99            f.setArguments(args);
100
101            return f;
102        }
103
104        /**
105         * When creating, retrieve this instance's number from its arguments.
106         */
107        @Override
108        public void onCreate(Bundle savedInstanceState) {
109            super.onCreate(savedInstanceState);
110            mNum = getArguments() != null ? getArguments().getInt("num") : 1;
111        }
112
113        /**
114         * The Fragment's UI is just a simple text view showing its
115         * instance number.
116         */
117        @Override
118        public View onCreateView(LayoutInflater inflater, ViewGroup container,
119                Bundle savedInstanceState) {
120            View v = inflater.inflate(R.layout.hello_world, container, false);
121            View tv = v.findViewById(R.id.text);
122            ((TextView)tv).setText("Fragment #" + mNum);
123            tv.setBackgroundDrawable(getResources().getDrawable(android.R.drawable.gallery_thumb));
124            return v;
125        }
126    }
127//END_INCLUDE(fragment)
128}
129