public class MainActivity extends Activity {
URLConnection connection;
int DownedFileLength=0;
InputStream inputStream;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Thread threes=new Thread(runable);
// threes.start();
Button button=(Button)findViewById(R.id.button);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
String savePAth=Environment.getExternalStorageDirectory()+"/text.mp3";
System.out.println(savePAth);
File file1=new File(savePAth);
if (!file1.exists()) { file1.mkdir(); }
if (!file1.exists()) {
try {
file1.createNewFile();
} catch (Exception e) {
System.out.println("---test------创建文件");
e.printStackTrace();
}
}
}
//Player();
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
Runnable runable=new Runnable() {
@Override
public void run() {
DownFile("http://172.20.35.218:8090/mpthree/345.mp3");
// System.out.println("获取的");
}
};
/**
* @param urlString
*/
private void DownFile(String urlString) {
try {
URL url=new URL(urlString);
connection=url.openConnection();
inputStream=connection.getInputStream();
} catch (Exception e) { e.printStackTrace();
System.out.println("61---URL创建连接"); }
String savePAth=Environment.getExternalStorageDirectory()+"/music/";
File file1=new File(savePAth);
// if (!file1.exists()) {
file1.mkdir();
// }
System.out.println(savePAth);
String savePathString=Environment.getExternalStorageDirectory()+"/music/345.mp3";
File file =new File(savePathString);
if (!file.exists()) {
try {
file.createNewFile();
} catch (Exception e) {
System.out.println("---76------创建文件");
e.printStackTrace();
}
}else{
file.delete();
try {
file.createNewFile();
} catch (IOException e) {
System.out.println("---84------删除--创建文件");
e.printStackTrace();
}
}
try {
OutputStream outputStream=new FileOutputStream(file);
byte [] buffer=new byte[1024*4];
int FileLength=connection.getContentLength();
while (DownedFileLength<FileLength) {
outputStream.write(buffer);
DownedFileLength+=inputStream.read(buffer);
}
outputStream.close();
} catch (Exception e) {
System.out.println("---97----下载过程");
e.printStackTrace();
}
System.out.println("-------下载完成。");
}
public void Player(){
MediaPlayer mediaPlayer=new MediaPlayer();
mediaPlayer.reset();
try {
File file = new File("/sdcard/music/345.mp3");
FileInputStream fis = new FileInputStream(file);
mediaPlayer.setDataSource(fis.getFD());
mediaPlayer.prepare();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mediaPlayer.start();
System.out.println("-------播放完成。");
}
}
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
}
