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 com.example.android.apis.view;
18 
19 import android.app.Activity;
20 import android.os.Bundle;
21 import android.widget.CheckBox;
22 import android.widget.CompoundButton;
23 import android.widget.CompoundButton.OnCheckedChangeListener;
24 import android.widget.SeekBar;
25 import android.widget.TextView;
26 
27 import com.example.android.apis.R;
28 
29 
30 /**
31  * Demonstrates how to use a seek bar
32  */
33 public class SeekBar1 extends Activity implements SeekBar.OnSeekBarChangeListener {
34 
35     SeekBar mSeekBar;
36     TextView mProgressText;
37     TextView mTrackingText;
38 
39     @Override
onCreate(Bundle savedInstanceState)40     protected void onCreate(Bundle savedInstanceState) {
41         super.onCreate(savedInstanceState);
42 
43         setContentView(R.layout.seekbar_1);
44 
45         mSeekBar = (SeekBar) findViewById(R.id.seek);
46         mSeekBar.setOnSeekBarChangeListener(this);
47         mProgressText = (TextView) findViewById(R.id.progress);
48         mTrackingText = (TextView) findViewById(R.id.tracking);
49 
50         ((CheckBox) findViewById(R.id.enabled)).setOnCheckedChangeListener(
51                 new OnCheckedChangeListener() {
52                     @Override
53                     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
54                         findViewById(R.id.seekMin).setEnabled(isChecked);
55                         findViewById(R.id.seekMax).setEnabled(isChecked);
56                         mSeekBar.setEnabled(isChecked);
57                     }
58                 });
59     }
60 
onProgressChanged(SeekBar seekBar, int progress, boolean fromTouch)61     public void onProgressChanged(SeekBar seekBar, int progress, boolean fromTouch) {
62         mProgressText.setText(progress + " " +
63                 getString(R.string.seekbar_from_touch) + "=" + fromTouch);
64     }
65 
onStartTrackingTouch(SeekBar seekBar)66     public void onStartTrackingTouch(SeekBar seekBar) {
67         mTrackingText.setText(getString(R.string.seekbar_tracking_on));
68     }
69 
onStopTrackingTouch(SeekBar seekBar)70     public void onStopTrackingTouch(SeekBar seekBar) {
71         mTrackingText.setText(getString(R.string.seekbar_tracking_off));
72     }
73 }
74