我是java新手。所以程序应该接受用户输入的文本,如果有“a”,它会播放a声音,如果有“b”,它会播放b声音。即使有多个声音,它也必须一个一个地播放这个声音“a”或“b”。这是我的代码:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button bStart = (Button) findViewById(R.id.bStart);
final EditText etStart = (EditText) findViewById(R.id.etStart);
final EditText etFinish = (EditText) findViewById(R.id.etFinish);
final char[] arr = etStart.getText().toString().toCharArray();
final MediaPlayer as = MediaPlayer.create(R2d2Activity.this, R.raw.as);
final MediaPlayer bs = MediaPlayer.create(R2d2Activity.this, R.raw.bs);
final SoundPool sp;
final int a;
final int b;
final int t;
sp = new SoundPool(2, AudioManager.STREAM_MUSIC, 0);
a = sp.load(this, R.raw.as, 1);
b = sp.load(this, R.raw.bs, 1);
final String value = etStart.getText().toString();
final Thread timer = new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(1300);
// Do some stuff
} catch (Exception e) {
e.getLocalizedMessage();
}
}
});
bStart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int n = 0;
String value;
String first;
value = etStart.getText().toString();
// TODO Auto-generated method stub
//actual code
for (int i=0; i<value.length(); i++){
first = etStart.getText().toString().substring(i, i+1);
if(first.contentEquals("a")){
as.start();
as.setOnCompletionListener(new OnCompletionListener(){
public void onCompletion(MediaPlayer arg0) {
//when finished
}
});
}else{
}
if(first.contentEquals("b")){
bs.start();
}else{
}
}
}
});
问题是它会同时开始播放所有音频文件。我尝试添加一些 OnCompletionListener,但我不知道如何处理它。请帮助我。
最佳答案
你能做的是
//define a variable to be used as index.
int audioindex = 0;
//Extract the files id into an array
int[] audioFileIds=new int[]{R.raw.as,R.raw.bs};
然后在您的 MediaPlayer
onCompletionListener
中添加如下内容。
然后在你的 OnCompletionListener 中。
mp.setOnCompletionListener(new OnCompletionListener(){
// @Override
public void onCompletion(MediaPlayer player) {
// File has ended, play the next one.
FunctionPlayFile(audioFileIds[audioindex]);
audioindex+=1; //increment the index to get the next audiofile
}
});
关于java - 一张一张地播放音频文件?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10927078/