| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.example.android.apis.support.app; |
| |
| import com.example.android.apis.R; |
| |
| import android.support.v4.app.Fragment; |
| import android.support.v4.app.FragmentActivity; |
| import android.support.v4.app.FragmentManager; |
| import android.support.v4.app.FragmentTransaction; |
| |
| import android.os.Bundle; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.View.OnClickListener; |
| import android.widget.Button; |
| import android.widget.TextView; |
| |
| /** |
| * Demonstration of hiding and showing fragments. |
| */ |
| public class FragmentHideShowSupport extends FragmentActivity { |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| setContentView(R.layout.fragment_hide_show_support); |
| |
| // The content view embeds two fragments; now retrieve them and attach |
| // their "hide" button. |
| FragmentManager fm = getSupportFragmentManager(); |
| addShowHideListener(R.id.frag1hide, fm.findFragmentById(R.id.fragment1)); |
| addShowHideListener(R.id.frag2hide, fm.findFragmentById(R.id.fragment2)); |
| } |
| |
| void addShowHideListener(int buttonId, final Fragment fragment) { |
| final Button button = (Button)findViewById(buttonId); |
| button.setOnClickListener(new OnClickListener() { |
| public void onClick(View v) { |
| FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); |
| ft.setCustomAnimations(android.R.anim.fade_in, |
| android.R.anim.fade_out); |
| if (fragment.isHidden()) { |
| ft.show(fragment); |
| button.setText("Hide"); |
| } else { |
| ft.hide(fragment); |
| button.setText("Show"); |
| } |
| ft.commit(); |
| } |
| }); |
| } |
| |
| public static class FirstFragment extends Fragment { |
| TextView mTextView; |
| |
| @Override |
| public View onCreateView(LayoutInflater inflater, ViewGroup container, |
| Bundle savedInstanceState) { |
| View v = inflater.inflate(R.layout.labeled_text_edit, container, false); |
| View tv = v.findViewById(R.id.msg); |
| ((TextView)tv).setText("The fragment saves and restores this text."); |
| |
| // Retrieve the text editor, and restore the last saved state if needed. |
| mTextView = (TextView)v.findViewById(R.id.saved); |
| if (savedInstanceState != null) { |
| mTextView.setText(savedInstanceState.getCharSequence("text")); |
| } |
| return v; |
| } |
| |
| @Override |
| public void onSaveInstanceState(Bundle outState) { |
| super.onSaveInstanceState(outState); |
| |
| // Remember the current text, to restore if we later restart. |
| outState.putCharSequence("text", mTextView.getText()); |
| } |
| } |
| |
| public static class SecondFragment extends Fragment { |
| |
| @Override |
| public View onCreateView(LayoutInflater inflater, ViewGroup container, |
| Bundle savedInstanceState) { |
| View v = inflater.inflate(R.layout.labeled_text_edit, container, false); |
| View tv = v.findViewById(R.id.msg); |
| ((TextView)tv).setText("The TextView saves and restores this text."); |
| |
| // Retrieve the text editor and tell it to save and restore its state. |
| // Note that you will often set this in the layout XML, but since |
| // we are sharing our layout with the other fragment we will customize |
| // it here. |
| ((TextView)v.findViewById(R.id.saved)).setSaveEnabled(true); |
| return v; |
| } |
| } |
| } |