Android——播放器和图片轮播

Posted 2020-07-27 烟_雨_江_南

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:paddingBottom="@dimen/activity_vertical_margin"
 7     android:paddingLeft="@dimen/activity_horizontal_margin"
 8     android:paddingRight="@dimen/activity_horizontal_margin"
 9     android:paddingTop="@dimen/activity_vertical_margin"
10     tools:context="com.hanqi.musicplayer.MainActivity"
11     android:orientation="vertical"
12     android:background="@drawable/fq">
13 
14     <TextView
15         android:layout_width="wrap_content"
16         android:layout_height="wrap_content"
17         android:text="播放状态"
18         android:textColor="#000080"
19         android:id="@+id/tv_1"/>
20 
21   <ProgressBar
22       android:layout_width="match_parent"
23       android:layout_height="wrap_content"
24       style="@android:style/Widget.ProgressBar.Horizontal"
25       android:id="@+id/pb_1"/>
26 
27     <!--<SeekBar-->
28         <!--android:layout_width="match_parent"-->
29         <!--android:layout_height="wrap_content"-->
30         <!--android:id="@+id/se_1"/>-->
31 
32     <LinearLayout
33         android:layout_width="match_parent"
34         android:layout_height="wrap_content">
35         <ImageButton
36             android:layout_width="0dp"
37             android:layout_height="wrap_content"
38             android:layout_weight="1"
39             android:src="@drawable/a1"
40             android:onClick="play_OnClick"/>
41         <ImageButton
42             android:layout_width="0dp"
43             android:layout_height="wrap_content"
44             android:layout_weight="1"
45             android:src="@drawable/a2"
46             android:onClick="pause_OnClick"/>
47         <ImageButton
48             android:layout_width="0dp"
49             android:layout_height="wrap_content"
50             android:layout_weight="1"
51             android:src="@drawable/a3"
52             android:onClick="stop_OnClick"/>
53         <ImageButton
54             android:layout_width="0dp"
55             android:layout_height="wrap_content"
56             android:layout_weight="1"
57             android:src="@drawable/a4"
58             android:onClick="exit_OnClick"/>
59     </LinearLayout>
60 
61     <ImageView
62         android:layout_width="330dp"
63         android:layout_height="220dp"
64         android:layout_gravity="center"
65         android:id="@+id/iv_1"/>
66     <ImageView
67         android:layout_width="330dp"
68         android:layout_height="220dp"
69         android:layout_gravity="center"
70         android:src="@drawable/gd"/>
71 
72 </LinearLayout>

.xml

 

 

  1 package com.hanqi.musicplayer;
  2 
  3 import android.media.MediaPlayer;
  4 import android.os.Bundle;
  5 import android.os.Handler;
  6 import android.os.Message;
  7 import android.support.v7.app.AppCompatActivity;
  8 import android.view.View;
  9 import android.widget.ImageView;
 10 import android.widget.ProgressBar;
 11 import android.widget.TextView;
 12 
 13 public class MainActivity extends AppCompatActivity {
 14 
 15     ProgressBar pb_1;
 16     TextView tv_1;
 17     //SeekBar se_1;
 18     ImageView iv_1;
 19 
 20     MediaPlayer mediaPlayer;
 21 
 22     Handler handler;
 23 
 24     @Override
 25     protected void onCreate(Bundle savedInstanceState) {
 26         super.onCreate(savedInstanceState);
 27         setContentView(R.layout.activity_main);
 28 
 29         pb_1=(ProgressBar)findViewById(R.id.pb_1);
 30         tv_1=(TextView)findViewById(R.id.tv_1);
 31         iv_1=(ImageView)findViewById(R.id.iv_1);
 32         //se_1=(SeekBar)findViewById(R.id.se_1);
 33         final int [] iv={R.drawable.f1,
 34                 R.drawable.f2,
 35                 R.drawable.f3,
 36                 R.drawable.f4,
 37                 R.drawable.f5,
 38                 R.drawable.f6,
 39                 R.drawable.f7,
 40                 R.drawable.f8,
 41                 R.drawable.f9,
 42                 R.drawable.f10};
 43 
 44         //消息
 45         handler = new Handler(){
 46             @Override
 47             public void handleMessage(Message msg) {
 48                 super.handleMessage(msg);
 49 
 50                 iv_1.setImageResource(iv[msg.arg1]);
 51             }
 52         };
 53 
 54         //图片轮播  在分线程
 55 
 56         new Thread(new Runnable() {
 57             @Override
 58             public void run() {
 59 
 60 
 61                 for (int i = 0; i < iv.length; i++)
 62                 {
 63 
 64                     //iv_1.setImageResource(R.drawable.f1);
 65 
 66                     Message message = new Message();
 67 
 68                     message.what=0;
 69                     message.arg1=i;
 70                     handler.sendMessage(message);
 71 
 72                     try {
 73                         Thread.sleep(3000);
 74                     } catch (Exception e) {
 75                         e.printStackTrace();
 76                     }
 77 
 78                     if (i == iv.length - 1) i = -1;
 79                 }
 80             }
 81 
 82         }).start();
 83 
 84 
 85 
 86     }
 87 
 88     //播放
 89     public void play_OnClick(View v)
 90     {
 91         //构造mediaPlayer
 92         if (mediaPlayer == null)
 93         {
 94             //用静态方法构造
 95             mediaPlayer = MediaPlayer.create(this,R.raw.test);
 96 
 97             mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
 98                 @Override
 99                 public void onCompletion(MediaPlayer mp) {
100 
101                     tv_1.setText("播放状态：播放完成");
102 
103                     mediaPlayer.reset();//重置
104                     mediaPlayer.release();//释放
105 
106                     mediaPlayer = null;
107                 }
108             });
109 
110             //设置进度条的最大进度
111             pb_1.setMax(mediaPlayer.getDuration());
112 
113             //启动分线程
114             new Thread(){
115                 @Override
116                 public void run() {
117 
118                     //循环条件
119                     while (mediaPlayer!=null)
120                     {
121                         //更新进度
122                         // 设置当前进度:和播放器的当前进度有关
123                         pb_1.setProgress(mediaPlayer.getCurrentPosition());
124 
125                         try
126                         {
127                             Thread.sleep(500);
128                         }
129                         catch (Exception e)
130                         {
131                             e.printStackTrace();
132                         }
133                     }
134                 }
135             }.start();
136 
137         }
138 
139 
140 //        new Thread(new Runnable() {
141 //            @Override
142 //            public void run() {
143 //                while (true) {
144 //
145 //                    pb_1.setProgress(mediaPlayer.getCurrentPosition());
146 //
147 //                    try
148 //                    {
149 //                        Thread.sleep(1000);
150 //                    }
151 //                    catch (Exception e)
152 //                    {
153 //                        e.printStackTrace();
154 //                    }
155 //
156 //
157 //                }
158 //            }
159 //        })
160 //                .start();
161 
162         mediaPlayer.start();
163 
164         tv_1.setText("播放状态：正在播放");
165     }
166 
167     //停止
168     public void stop_OnClick(View v)
169     {
170         if (mediaPlayer!=null)
171         {
172             mediaPlayer.stop();
173             mediaPlayer.reset();
174             mediaPlayer.release();
175             mediaPlayer = null;
176 
177             pb_1.setProgress(0);
178 
179             tv_1.setText("播放状态：停止播放");
180         }
181     }
182 
183     //暂停
184     public void pause_OnClick(View v)
185     {
186         if (mediaPlayer !=null&&mediaPlayer.isPlaying())
187         {
188             mediaPlayer.pause();
189 
190             tv_1.setText("播放状态：暂停播放");
191         }
192     }
193 
194     //退出
195     public void exit_OnClick(View v)
196     {
197         stop_OnClick(v);
198 
199         finish();
200     }
201 }

.java