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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.apis.view;
     18 
     19 import android.app.Activity;
     20 import android.content.Intent;
     21 import android.net.Uri;
     22 import android.os.Bundle;
     23 import android.view.Menu;
     24 import android.view.MenuInflater;
     25 import android.view.MenuItem;
     26 import android.view.WindowId;
     27 import android.view.WindowId.FocusObserver;
     28 import android.widget.SearchView;
     29 import android.widget.ShareActionProvider;
     30 import android.widget.TextView;
     31 import android.widget.Toast;
     32 import com.example.android.apis.R;
     33 
     34 public class WindowFocusObserver extends Activity implements SearchView.OnQueryTextListener {
     35     TextView mState;
     36 
     37     final FocusObserver mObserver = new WindowId.FocusObserver() {
     38 
     39         @Override
     40         public void onFocusGained(WindowId token) {
     41             mState.setText("Gained focus");
     42         }
     43 
     44         @Override
     45         public void onFocusLost(WindowId token) {
     46             mState.setText("Lost focus");
     47         }
     48     };
     49 
     50     @Override
     51     public void onCreate(Bundle savedInstanceState) {
     52         super.onCreate(savedInstanceState);
     53 
     54         setContentView(R.layout.window_focus_observer);
     55         mState = (TextView)findViewById(R.id.focus_state);
     56     }
     57 
     58     @Override
     59     public boolean onCreateOptionsMenu(Menu menu) {
     60         MenuInflater inflater = getMenuInflater();
     61         inflater.inflate(R.menu.content_actions, menu);
     62         SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
     63         searchView.setOnQueryTextListener(this);
     64 
     65         // Set file with share history to the provider and set the share intent.
     66         MenuItem actionItem = menu.findItem(R.id.menu_item_share_action_provider_action_bar);
     67         ShareActionProvider actionProvider = (ShareActionProvider) actionItem.getActionProvider();
     68         actionProvider.setShareHistoryFileName(ShareActionProvider.DEFAULT_SHARE_HISTORY_FILE_NAME);
     69         // Note that you can set/change the intent any time,
     70         // say when the user has selected an image.
     71         Intent shareIntent = new Intent(Intent.ACTION_SEND);
     72         shareIntent.setType("image/*");
     73         Uri uri = Uri.fromFile(getFileStreamPath("shared.png"));
     74         shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
     75         actionProvider.setShareIntent(shareIntent);
     76         return true;
     77     }
     78 
     79     public void onSort(MenuItem item) {
     80     }
     81 
     82     @Override
     83     public boolean onQueryTextChange(String newText) {
     84         return true;
     85     }
     86 
     87     @Override
     88     public boolean onQueryTextSubmit(String query) {
     89         Toast.makeText(this, "Searching for: " + query + "...", Toast.LENGTH_SHORT).show();
     90         return true;
     91     }
     92 
     93     @Override
     94     public void onAttachedToWindow() {
     95         super.onAttachedToWindow();
     96         WindowId token = getWindow().getDecorView().getWindowId();
     97         token.registerFocusObserver(mObserver);
     98         mState.setText(token.isFocused() ? "Focused" : "Not focused");
     99     }
    100 
    101     @Override
    102     public void onDetachedFromWindow() {
    103         super.onDetachedFromWindow();
    104         getWindow().getDecorView().getWindowId().unregisterFocusObserver(mObserver);
    105     }
    106 }
    107