自定义音乐+广播

xiaoxiao2025-04-06 20

自定义适配器

public class LAdapter extends BaseAdapter{

//创建属性 private Context context; //对象 private ArrayList<Music> list; //有参构造 public LAdapter(Context context, ArrayList<Music> list) { super(); this.context = context; this.list = list; } @Override public int getCount() { // TODO Auto-generated method stub return list.size(); } @Override public Object getItem(int position) { // TODO Auto-generated method stub return list.get(position); } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub //优化 ViewHolder holder=null; if(convertView==null){ holder=new ViewHolder(); convertView = View.inflate(context, R.layout.list, null); holder.image=(ImageView) convertView.findViewById(R.id.image1); holder.name=(TextView) convertView.findViewById(R.id.name1); holder.singer=(TextView) convertView.findViewById(R.id.singer1); convertView.setTag(holder); }else{ holder=(ViewHolder) convertView.getTag(); } Music music = list.get(position); holder.image.setImageResource(music.getImage1()); holder.name.setText(music.getName()); holder.singer.setText(music.getSinger()); return convertView; } //自定义viewholder类 class ViewHolder{ ImageView image; TextView name,singer; }

}

自定义Music类

public class Music implements Serializable{

private int image1; private String name; private String singer; private File file; public Music() { super(); // TODO Auto-generated constructor stub } public Music(int image1, String name, String singer, File file) { super(); this.image1 = image1; this.name = name; this.singer = singer; this.file = file; } public int getImage1() { return image1; } public void setImage1(int image1) { this.image1 = image1; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getSinger() { return singer; } public void setSinger(String singer) { this.singer = singer; } public File getFile() { return file; } public void setFile(File file) { this.file = file; } @Override public String toString() { return "Music [image1=" + image1 + ", name=" + name + ", singer=" + singer + ", file=" + file + "]"; }

}

自定义广播类

//开机自启 public class MyReceiver extends BroadcastReceiver{

@Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub //进入方法 if("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())){ //创建intent Intent data = new Intent(context,MainActivity.class); data.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); //跳转 context.startActivity(data); } }

}

Mainactivity

public class MainActivity extends Activity {

private ImageView image; private TextView title1; private Button tiao; int t = 3; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // 找控件 image = (ImageView) findViewById(R.id.image); title1 = (TextView) findViewById(R.id.tit); tiao = (Button) findViewById(R.id.tiao); // 设置监听 tiao.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub //过场动画 overridePendingTransition(R.anim.aanim, 1); overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out); overridePendingTransition(android.R.anim.slide_in_left, android.R.anim.slide_out_right); t = 0; } }); // 动画 Animation an = AnimationUtils.loadAnimation(MainActivity.this, R.anim.aanim); image.startAnimation(an); handler.sendEmptyMessage(0); } // handler Handler handler = new Handler() { public void handleMessage(android.os.Message msg) { switch (msg.what) { case 0: // 设置控件值 title1.setText(t + "s"); t--; if (t <= 0) { startActivity(new Intent(MainActivity.this, TwoActivity.class)); return; } handler.sendEmptyMessageDelayed(0, 1000); break; default: break; } }; };

}

TwoActivity

public class TwoActivity extends Activity {

private ListView listview; private Music music; private ArrayList<Music> list; private LAdapter aa; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_two); // 找控件 listview = (ListView) findViewById(R.id.listview); // 创建数据 list = new ArrayList<Music>(); for (int i = 0; i < 12; i++) { File file = new File(Environment.getExternalStorageDirectory() .getAbsolutePath(), "ge" + i + ".mp3"); if (i % 2 == 0) { music = new Music(R.drawable.liuruoying, "后来", "歌手:刘若英", file); } else { music = new Music(R.drawable.xietingfeng, "因为爱所以爱", "歌手:谢霆锋", file); } list.add(music); } // 适配器 aa = new LAdapter(TwoActivity.this, list); // 添加适配器 listview.setAdapter(aa); // 点击事件 listview.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // TODO Auto-generated method stub //跳转 Intent intent = new Intent(TwoActivity.this, ThreeActivity.class); intent.putExtra("position", position); intent.putExtra("list", list); startActivityForResult(intent, 1); } }); // 长安事件 listview.setOnItemLongClickListener(new OnItemLongClickListener() { @Override public boolean onItemLongClick(AdapterView<?> parent, View view, final int position, long id) { // TODO Auto-generated method stub // 创建弹框 AlertDialog.Builder builder = new AlertDialog.Builder( TwoActivity.this); View shanchu = View.inflate(TwoActivity.this, R.layout.shanchu, null); final AlertDialog dialog = builder.setView(shanchu).create(); dialog.show(); // 找控件 Button queding = (Button) shanchu.findViewById(R.id.queding); Button cancel = (Button) shanchu.findViewById(R.id.quxiao); TextView bb = (TextView) shanchu.findViewById(R.id.bb); TextView cc = (TextView) shanchu.findViewById(R.id.cc); bb.setText(list.get(position).getName()); cc.setText(list.get(position).getSinger()); // 确定按钮 queding.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub list.remove(position); aa.notifyDataSetChanged(); dialog.dismiss(); } }); // 取消按钮 cancel.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub dialog.dismiss(); } }); return true; } }); }

}

ThreeActivity

public class ThreeActivity extends Activity implements OnClickListener { private ImageView hui; private ImageView play; private ImageView up; private ImageView down; private ImageView huitu; private TextView listing; private SeekBar bar; private MediaPlayer player = new MediaPlayer(); private int position; private ArrayList list2; int a = 0; private Music music; boolean isplay = false; boolean is = false;

@Override protected void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); player.stop(); handler.removeMessages(0); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_three); // 找控件 // 进度条 bar = (SeekBar) findViewById(R.id.seekBar); // 回传的图标 hui = (ImageView) findViewById(R.id.hui); // 回传的背景图片 huitu = (ImageView) findViewById(R.id.huitu); // 暂停 play = (ImageView) findViewById(R.id.play); // 上一曲 up = (ImageView) findViewById(R.id.up); // 下一曲 down = (ImageView) findViewById(R.id.down); // 找到intent的对象 Intent intent = getIntent(); // 找到集合 list2 = (ArrayList<Music>) intent.getSerializableExtra("list"); // 索引 position = intent.getIntExtra("position", -1); // 找到对象 music = list2.get(position); // 附图片 listing = (TextView) findViewById(R.id.listing); // 设置内容 listing.setText(music.getName()); // 设置监听 hui.setOnClickListener(this); play.setOnClickListener(this); up.setOnClickListener(this); down.setOnClickListener(this); bar.setOnClickListener(this); // 监听事件 bar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { @Override public void onStopTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub // 判断是否正在播放 if (player.isPlaying()) { player.seekTo(bar.getProgress()); } else { bar.getProgress(); } } @Override public void onStartTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { // TODO Auto-generated method stub } }); } // handler处理机制 Handler handler = new Handler() { public void handleMessage(android.os.Message msg) { switch (msg.what) { case 0: // 设置player的进度值 bar.setProgress(player.getCurrentPosition()); // 判断是否最大 if (bar.getMax() == player.getCurrentPosition()) { return; } // 发送延迟 handler.sendEmptyMessageDelayed(0, 1000); break; default: break; } }; }; @Override public void onClick(View v) { // TODO Auto-generated method stub // 创建对象 Music music2 = null; // boolean isplay = false; switch (v.getId()) { // 回转 case R.id.hui: // 创建对象 Intent data = new Intent(ThreeActivity.this, TwoActivity.class); // 找到控件 String nn = listing.getText().toString(); data.putExtra("nn", nn); // 开始跳转 startActivity(data); break; // 正在播放 case R.id.play: music2 = list2.get(position); // 设置播放路径 // 是否正在播放 if (player.isPlaying()) { play.setImageResource(R.drawable.play); player.pause(); player.reset(); handler.removeMessages(0); return; } try { //设置路径 player.setDataSource(music2.getFile().getAbsolutePath()); if(!is){ //准备 player.prepare(); // 开始 player.start(); isplay=true; }else{ // 开始 player.start(); } // 传索引 a = position; // 设置 Toast.makeText(ThreeActivity.this, "" + isplay, 0).show(); // 设置按钮的背景图片 play.setImageResource(R.drawable.pause_n); // 设置背景图片 huitu.setImageResource(music.getImage1()); // 设置进度 bar.setProgress(0); // 最大进度 bar.setMax(player.getDuration()); // 发送 handler.sendEmptyMessage(0); } catch (Exception e1) { // TODO Auto-generated catch block e1.printStackTrace(); } break; // 下一曲 case R.id.down: if (position == list2.size() - 1) { Toast.makeText(ThreeActivity.this, "没有新专辑", 0).show(); return; } // 判断是否正在播放 if (player.isPlaying()) { player.stop(); player.reset(); } // 索引加1 a++; try { // 得到对象 music2 = list2.get(a); // 播放路径 player.setDataSource(music2.getFile().getAbsolutePath()); // 准备 player.prepare(); // 开始 player.start(); // 设置图片索引 huitu.setImageResource(music2.getImage1()); play.setImageResource(R.drawable.pause_n); // 点击 listing.setText(music2.getName()); // 当前进度 bar.setProgress(0); bar.setMax(player.getDuration()); handler.sendEmptyMessage(0); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } break; // 上一曲 case R.id.up: if (position == 0) { Toast.makeText(ThreeActivity.this, "没有上一曲", 0).show(); return; } if (player.isPlaying()) { // 停止 player.stop(); // 重置 player.reset(); } // 索引减去1 a--; try { // 设置播放路径 // 得到对象 music2 = list2.get(a); // 播放路径 player.setDataSource(music2.getFile().getAbsolutePath()); // 准备 player.prepare(); // 开始 player.start(); // 设置背景图片 huitu.setImageResource(music2.getImage1()); play.setImageResource(R.drawable.pause_n); listing.setText(music2.getName()); // 初始值 bar.setProgress(0); // 最大值 bar.setMax(player.getDuration()); // 发送 handler.sendEmptyMessage(0); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } break; default: break; } }

}

权限

注册广播

创建anim文件夹创建anim.xml

<?xml version="1.0" encoding="utf-8"?>

activity_main.xml

<Button android:id="@+id/tiao" android:layout_width=“wrap_content” android:layout_height=“wrap_content”

android:text="立即体验" android:layout_alignParentBottom="true" android:layout_centerInParent="true" />

activity_two.xml

<LinearLayout xmlns:android=“http://schemas.android.com/apk/res/android” xmlns:tools=“http://schemas.android.com/tools” android:layout_width=“match_parent” android:layout_height=“match_parent” android:orientation=“vertical”

activity_three.xml

list.xml

<?xml version="1.0" encoding="utf-8"?>

shanchu.xml

<?xml version="1.0" encoding="utf-8"?>

title.xml

<?xml version="1.0" encoding="utf-8"?>

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Java

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