1 /*
2  * Copyright (C) 2010 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.apis.app;
18 
19 import com.example.android.apis.R;
20 
21 import android.app.Activity;
22 import android.app.DialogFragment;
23 import android.app.Fragment;
24 import android.app.FragmentTransaction;
25 import android.os.Bundle;
26 import android.view.LayoutInflater;
27 import android.view.View;
28 import android.view.View.OnClickListener;
29 import android.view.ViewGroup;
30 import android.widget.Button;
31 import android.widget.TextView;
32 
33 public class FragmentDialog extends Activity {
34     int mStackLevel = 0;
35 
36     @Override
onCreate(Bundle savedInstanceState)37     protected void onCreate(Bundle savedInstanceState) {
38         super.onCreate(savedInstanceState);
39         setContentView(R.layout.fragment_dialog);
40 
41         View tv = findViewById(R.id.text);
42         ((TextView)tv).setText("Example of displaying dialogs with a DialogFragment.  "
43                 + "Press the show button below to see the first dialog; pressing "
44                 + "successive show buttons will display other dialog styles as a "
45                 + "stack, with dismissing or back going to the previous dialog.");
46 
47         // Watch for button clicks.
48         Button button = (Button)findViewById(R.id.show);
49         button.setOnClickListener(new OnClickListener() {
50             public void onClick(View v) {
51                 showDialog();
52             }
53         });
54 
55         if (savedInstanceState != null) {
56             mStackLevel = savedInstanceState.getInt("level");
57         }
58     }
59 
60     @Override
onSaveInstanceState(Bundle outState)61     public void onSaveInstanceState(Bundle outState) {
62         super.onSaveInstanceState(outState);
63         outState.putInt("level", mStackLevel);
64     }
65 
66 //BEGIN_INCLUDE(add_dialog)
showDialog()67     void showDialog() {
68         mStackLevel++;
69 
70         // DialogFragment.show() will take care of adding the fragment
71         // in a transaction.  We also want to remove any currently showing
72         // dialog, so make our own transaction and take care of that here.
73         FragmentTransaction ft = getFragmentManager().beginTransaction();
74         Fragment prev = getFragmentManager().findFragmentByTag("dialog");
75         if (prev != null) {
76             ft.remove(prev);
77         }
78         ft.addToBackStack(null);
79 
80         // Create and show the dialog.
81         DialogFragment newFragment = MyDialogFragment.newInstance(mStackLevel);
82         newFragment.show(ft, "dialog");
83     }
84 //END_INCLUDE(add_dialog)
85 
getNameForNum(int num)86     static String getNameForNum(int num) {
87         switch ((num-1)%6) {
88             case 1: return "STYLE_NO_TITLE";
89             case 2: return "STYLE_NO_FRAME";
90             case 3: return "STYLE_NO_INPUT (this window can't receive input, so "
91                     + "you will need to press the bottom show button)";
92             case 4: return "STYLE_NORMAL with dark fullscreen theme";
93             case 5: return "STYLE_NORMAL with light theme";
94             case 6: return "STYLE_NO_TITLE with light theme";
95             case 7: return "STYLE_NO_FRAME with light theme";
96             case 8: return "STYLE_NORMAL with light fullscreen theme";
97         }
98         return "STYLE_NORMAL";
99     }
100 
101 //BEGIN_INCLUDE(dialog)
102     public static class MyDialogFragment extends DialogFragment {
103         int mNum;
104 
105         /**
106          * Create a new instance of MyDialogFragment, providing "num"
107          * as an argument.
108          */
newInstance(int num)109         static MyDialogFragment newInstance(int num) {
110             MyDialogFragment f = new MyDialogFragment();
111 
112             // Supply num input as an argument.
113             Bundle args = new Bundle();
114             args.putInt("num", num);
115             f.setArguments(args);
116 
117             return f;
118         }
119 
120         @Override
onCreate(Bundle savedInstanceState)121         public void onCreate(Bundle savedInstanceState) {
122             super.onCreate(savedInstanceState);
123             mNum = getArguments().getInt("num");
124 
125             // Pick a style based on the num.
126             int style = DialogFragment.STYLE_NORMAL, theme = 0;
127             switch ((mNum-1)%6) {
128                 case 1: style = DialogFragment.STYLE_NO_TITLE; break;
129                 case 2: style = DialogFragment.STYLE_NO_FRAME; break;
130                 case 3: style = DialogFragment.STYLE_NO_INPUT; break;
131                 case 4: style = DialogFragment.STYLE_NORMAL; break;
132                 case 5: style = DialogFragment.STYLE_NORMAL; break;
133                 case 6: style = DialogFragment.STYLE_NO_TITLE; break;
134                 case 7: style = DialogFragment.STYLE_NO_FRAME; break;
135                 case 8: style = DialogFragment.STYLE_NORMAL; break;
136             }
137             switch ((mNum-1)%6) {
138                 case 4: theme = android.R.style.Theme_Holo; break;
139                 case 5: theme = android.R.style.Theme_Holo_Light_Dialog; break;
140                 case 6: theme = android.R.style.Theme_Holo_Light; break;
141                 case 7: theme = android.R.style.Theme_Holo_Light_Panel; break;
142                 case 8: theme = android.R.style.Theme_Holo_Light; break;
143             }
144             setStyle(style, theme);
145         }
146 
147         @Override
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)148         public View onCreateView(LayoutInflater inflater, ViewGroup container,
149                 Bundle savedInstanceState) {
150             View v = inflater.inflate(R.layout.fragment_dialog, container, false);
151             View tv = v.findViewById(R.id.text);
152             ((TextView)tv).setText("Dialog #" + mNum + ": using style "
153                     + getNameForNum(mNum));
154 
155             // Watch for button clicks.
156             Button button = (Button)v.findViewById(R.id.show);
157             button.setOnClickListener(new OnClickListener() {
158                 public void onClick(View v) {
159                     // When button is clicked, call up to owning activity.
160                     ((FragmentDialog)getActivity()).showDialog();
161                 }
162             });
163 
164             return v;
165         }
166     }
167 //END_INCLUDE(dialog)
168 }
169