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      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 
     17 package com.example.android.supportv4.app;
     18 
     19 import com.example.android.supportv4.R;
     20 
     21 import android.support.v4.app.FragmentActivity;
     22 import android.support.v4.app.Fragment;
     23 import android.support.v4.app.FragmentTransaction;
     24 
     25 import android.app.Activity;
     26 import android.content.res.TypedArray;
     27 import android.os.Bundle;
     28 import android.util.AttributeSet;
     29 import android.view.LayoutInflater;
     30 import android.view.View;
     31 import android.view.ViewGroup;
     32 import android.widget.TextView;
     33 
     34 /**
     35  * Demonstrates a fragment that can be configured through both Bundle arguments
     36  * and layout attributes.
     37  */
     38 public class FragmentArgumentsSupport extends FragmentActivity {
     39 //BEGIN_INCLUDE(create)
     40     @Override protected void onCreate(Bundle savedInstanceState) {
     41         super.onCreate(savedInstanceState);
     42         setContentView(R.layout.fragment_arguments_support);
     43 
     44         if (savedInstanceState == null) {
     45             // First-time init; create fragment to embed in activity.
     46             FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
     47             Fragment newFragment = MyFragment.newInstance("From Arguments");
     48             ft.add(R.id.created, newFragment);
     49             ft.commit();
     50         }
     51     }
     52 //END_INCLUDE(create)
     53 
     54 //BEGIN_INCLUDE(fragment)
     55     public static class MyFragment extends Fragment {
     56         CharSequence mLabel;
     57 
     58         /**
     59          * Create a new instance of MyFragment that will be initialized
     60          * with the given arguments.
     61          */
     62         static MyFragment newInstance(CharSequence label) {
     63             MyFragment f = new MyFragment();
     64             Bundle b = new Bundle();
     65             b.putCharSequence("label", label);
     66             f.setArguments(b);
     67             return f;
     68         }
     69 
     70         /**
     71          * Parse attributes during inflation from a view hierarchy into the
     72          * arguments we handle.
     73          */
     74         @Override public void onInflate(Activity activity, AttributeSet attrs,
     75                 Bundle savedInstanceState) {
     76             super.onInflate(activity, attrs, savedInstanceState);
     77 
     78             TypedArray a = activity.obtainStyledAttributes(attrs,
     79                     R.styleable.FragmentArguments);
     80             mLabel = a.getText(R.styleable.FragmentArguments_android_label);
     81             a.recycle();
     82         }
     83 
     84         /**
     85          * During creation, if arguments have been supplied to the fragment
     86          * then parse those out.
     87          */
     88         @Override public void onCreate(Bundle savedInstanceState) {
     89             super.onCreate(savedInstanceState);
     90 
     91             Bundle args = getArguments();
     92             if (args != null) {
     93                 CharSequence label = args.getCharSequence("label");
     94                 if (label != null) {
     95                     mLabel = label;
     96                 }
     97             }
     98         }
     99 
    100         /**
    101          * Create the view for this fragment, using the arguments given to it.
    102          */
    103         @Override public View onCreateView(LayoutInflater inflater, ViewGroup container,
    104                 Bundle savedInstanceState) {
    105             View v = inflater.inflate(R.layout.hello_world, container, false);
    106             View tv = v.findViewById(R.id.text);
    107             ((TextView)tv).setText(mLabel != null ? mLabel : "(no label)");
    108             tv.setBackgroundDrawable(getResources().getDrawable(android.R.drawable.gallery_thumb));
    109             return v;
    110         }
    111     }
    112 //END_INCLUDE(fragment)
    113 }
    114