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