我有一个简单的应用程序,它有一个按钮和一个textview,点击后,它从音频流缓冲,并使用mediaPlayer对象播放它。
我为不同的歌曲创建了一个简单的循环,以便在不同的应用程序执行时播放。 (每次用户打开应用程序并按下播放时,必须播放新歌)
但是媒体播放器播放了一首歌,adn然后缓冲secod和第三首歌,所有歌曲立刻开始播放,造成混乱。
有什么问题?
这是我的代码:
package dreamnyc.lyricazam;
import android.app.Activity;
import android.content.Context;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import java.io.IOException;
public class Search extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search);
String url = "";
final TextView e1;
final Button b;
b = (Button) findViewById(R.id.button);
e1 = (TextView) findViewById(R.id.textView);
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for(numb1=5; numb1<8; numb1++){
e1.setText(String.valueOf(numb1));
nyc2(numb1);
b.setVisibility(View.GONE);
}
}
});
}
public int numb1=0;
public String url = "";
void nyc2(int a) {
a = numb1;
url = "http://sound3.mp3slash.net/indianx/namaste_london/namaste_london0" + numb1 + "(www.songs.pk).mp3";
nycnyc();
}
void nycnyc() {
MediaPlayer mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mediaPlayer.setDataSource(url);
} catch (IOException e) {
}
try {
mediaPlayer.prepare();
} catch (IOException e) {
}
// might take long! (for buffering, etc)
mediaPlayer.start();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_search, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
答案 0 :(得分:0)
您可以通过随机为numb1
分配值来解决此问题。
double max = 10.0; // number of songs in the view.
double min = 1.0;
int numb1;
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
numb1 = (int)(Math.random() * (max - min) + min);
e1.setText(String.valueOf(numb1));
nyc2(numb1);
b.setVisibility(View.GONE);
}
}
});