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      1 /*
      2  * Copyright (C) 2007 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 android.widget.listview;
     18 
     19 import android.app.ListActivity;
     20 import android.os.Bundle;
     21 import android.os.Handler;
     22 import android.view.View;
     23 import android.widget.AbsListView;
     24 import android.widget.AdapterView;
     25 import android.widget.ArrayAdapter;
     26 import android.widget.TextView;
     27 
     28 import com.android.frameworks.coretests.R;
     29 
     30 /**
     31  * Exercises change notification in a list
     32  */
     33 public class ListScrollListener extends ListActivity implements AbsListView.OnScrollListener {
     34     Handler mHandler = new Handler();
     35     TextView mText;
     36 
     37     @Override
     38     public void onCreate(Bundle icicle) {
     39         super.onCreate(icicle);
     40 
     41         setContentView(R.layout.list_scroll_listener);
     42 
     43         String values[] = new String[1000];
     44         int i=0;
     45         for(i=0; i<1000; i++) {
     46             values[i] = ((Integer)i).toString();
     47         }
     48 
     49         mText = findViewById(R.id.text);
     50         setListAdapter(new ArrayAdapter<String>(this,
     51                 android.R.layout.simple_list_item_1, values));
     52 
     53 
     54         getListView().setOnScrollListener(this);
     55     }
     56 
     57     public void onItemSelected(AdapterView parent, View v, int position, long id) {
     58         mText.setText("Position " + position);
     59     }
     60 
     61     public void onNothingSelected(AdapterView parent) {
     62         mText.setText("Nothing");
     63     }
     64 
     65     public void onScroll(AbsListView view, int firstCell, int cellCount, int itemCount) {
     66         int last = firstCell + cellCount - 1;
     67         mText.setText("Showing " + firstCell + "-" + last + "/" + itemCount);
     68     }
     69 
     70     public void onScrollStateChanged(AbsListView view, int scrollState) {
     71     }
     72 }
     73