Home | History | Annotate | Download | only in app 
      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
     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
     61     public void onSaveInstanceState(Bundle outState) {
     62         super.onSaveInstanceState(outState);
     63         outState.putInt("level", mStackLevel);
     64     }
     65 
     66 //BEGIN_INCLUDE(add_dialog)
     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 
     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          */
    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
    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
    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