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.scroll;
18 
19 import android.app.Activity;
20 import android.os.Bundle;
21 import android.widget.Button;
22 import android.widget.LinearLayout;
23 import android.widget.ScrollView;
24 import android.widget.TextView;
25 
26 import com.android.frameworks.coretests.R;
27 
28 /**
29  * Basic scroll view example
30  */
31 public class ScrollViewButtonsAndLabels extends Activity {
32 
33     private ScrollView mScrollView;
34     private LinearLayout mLinearLayout;
35 
36     private int mNumGroups = 10;
37 
38 
getScrollView()39     public ScrollView getScrollView() {
40         return mScrollView;
41     }
42 
getLinearLayout()43     public LinearLayout getLinearLayout() {
44         return mLinearLayout;
45     }
46 
getNumButtons()47     public int getNumButtons() {
48         return mNumGroups;
49     }
50 
getButton(int groupNum)51     public Button getButton(int groupNum) {
52         if (groupNum > mNumGroups) {
53             throw new IllegalArgumentException("groupNum > " + mNumGroups);
54         }
55         return (Button) mLinearLayout.getChildAt(2*groupNum);
56     }
57 
58     @Override
onCreate(Bundle icicle)59     protected void onCreate(Bundle icicle) {
60         super.onCreate(icicle);
61         setContentView(R.layout.scrollview_linear_layout);
62 
63 
64         // estimated ratio to get enough buttons so a couple are off screen
65         int screenHeight = getWindowManager().getDefaultDisplay().getHeight();
66         mNumGroups = screenHeight / 30;
67 
68         mScrollView = findViewById(R.id.scrollView);
69         mLinearLayout = findViewById(R.id.layout);
70 
71         LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(
72                 LinearLayout.LayoutParams.MATCH_PARENT,
73                 LinearLayout.LayoutParams.WRAP_CONTENT
74         );
75 
76         for (int i = 0; i < mNumGroups; i++) {
77             // want button to be first and last
78             if (i > 0) {
79                 TextView textView = new TextView(this);
80                 textView.setText("Text View " + i);
81                 mLinearLayout.addView(textView, p);
82             }
83 
84             Button button = new Button(this);
85             button.setText("Button " + (i + 1));
86             mLinearLayout.addView(button, p);
87         }
88     }
89 
90 }
91