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我有兩項活動,家庭作業和更接近。我有一首歌在家庭作業中播放,但是當按下某個按鈕時,媒體播放器會暫停並打開近處。在我的onPause功能中,我試圖暫停媒體播放器,但它不起作用,更近的活動打開並且音樂仍在播放。之前,我已經設置好了,以便在活動作業的按鈕監聽器中,媒體播放器暫停,但是媒體播放器在我設置onResume時不會恢復。我認爲這可能是mediaplayer的範圍問題,有誰能幫我解決這個問題嗎?Android:onResume/onPause和mediaplayer
package com.cis.lab4;
import java.io.IOException;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.content.res.AssetFileDescriptor;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Homework extends Activity {
final MediaPlayer mediaplayer = new MediaPlayer();
int media_length;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_homework);
setPlayer();
mediaplayer.start();
Button next = (Button) findViewById(R.id.homeworkContinue);
final Intent openCloser = new Intent(this, EndActivity.class);
next.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
startActivity(openCloser);
}
});
}
public void onResume(Bundle savedInstanceState){
super.onResume();
mediaplayer.seekTo(media_length);
mediaplayer.start();
}
public void onPause(Bundle savedInstanceState){
mediaplayer.pause();
media_length = mediaplayer.getCurrentPosition();
}
public void setPlayer(){
AssetFileDescriptor afd;
try {
afd = getAssets().openFd("rev.mp3");
mediaplayer.setDataSource(afd.getFileDescriptor(),afd.getStartOffset(),afd.getLength());
mediaplayer.prepare();
} catch (IOException e) {
e.printStackTrace();
}
}
}