Home | History | Annotate | Download | only in multires 
      1 /*
      2  * Copyright (C) 2009 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.multires;
     18 
     19 import android.app.Activity;
     20 import android.os.Bundle;
     21 import android.view.View;
     22 import android.widget.Button;
     23 import android.widget.ImageView;
     24 import android.widget.TextView;
     25 
     26 public final class MultiRes extends Activity {
     27 
     28     private int mCurrentPhotoIndex = 0;
     29     private int[] mPhotoIds = new int[] { R.drawable.sample_0,
     30             R.drawable.sample_1, R.drawable.sample_2, R.drawable.sample_3,
     31             R.drawable.sample_4, R.drawable.sample_5, R.drawable.sample_6,
     32             R.drawable.sample_7 };
     33 
     34     /** Called when the activity is first created. */
     35     @Override
     36     public void onCreate(Bundle savedInstanceState) {
     37         super.onCreate(savedInstanceState);
     38         setContentView(R.layout.main);
     39 
     40         showPhoto(mCurrentPhotoIndex);
     41 
     42         // Handle clicks on the 'Next' button.
     43         Button nextButton = (Button) findViewById(R.id.next_button);
     44         nextButton.setOnClickListener(new View.OnClickListener() {
     45             public void onClick(View v) {
     46                 mCurrentPhotoIndex = (mCurrentPhotoIndex + 1)
     47                         % mPhotoIds.length;
     48                 showPhoto(mCurrentPhotoIndex);
     49             }
     50         });
     51     }
     52 
     53     @Override
     54     protected void onSaveInstanceState(Bundle outState) {
     55         outState.putInt("photo_index", mCurrentPhotoIndex);
     56         super.onSaveInstanceState(outState);
     57     }
     58 
     59     @Override
     60     protected void onRestoreInstanceState(Bundle savedInstanceState) {
     61         mCurrentPhotoIndex = savedInstanceState.getInt("photo_index");
     62         showPhoto(mCurrentPhotoIndex);
     63         super.onRestoreInstanceState(savedInstanceState);
     64     }
     65 
     66     private void showPhoto(int photoIndex) {
     67         ImageView imageView = (ImageView) findViewById(R.id.image_view);
     68         imageView.setImageResource(mPhotoIds[photoIndex]);
     69 
     70         TextView statusText = (TextView) findViewById(R.id.status_text);
     71         statusText.setText(String.format("%d/%d", photoIndex + 1,
     72                 mPhotoIds.length));
     73     }
     74 }
     75