每 1 秒更新一次搜索栏时，音乐播放不流畅

Question

添加Timer((方法后，搜索栏应该每秒更新一次，它正在更新，但有一个小的停顿，就像更新搜索栏需要时间来更新...这有原因 SeekBar 运行不顺畅，给人一种滞后的感觉......

package com.example.musicplayer;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.SeekBar;
import java.util.Timer;
import java.util.TimerTask;
public class MainActivity extends AppCompatActivity {
MediaPlayer mediaPlayer;
AudioManager audioManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mediaPlayer = MediaPlayer.create(this,R.raw.senorita);
audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
int myMaxValume= audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
int myCurrentValume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
SeekBar valumeRocker = findViewById(R.id.seekBar);
valumeRocker.setMax(myMaxValume);
valumeRocker.setProgress(myCurrentValume);
valumeRocker.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,progress,0);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
//timeline part of music app
final SeekBar timeline = findViewById(R.id.timeline);
timeline.setMax(mediaPlayer.getDuration());
//set onChange listner on timeline
timeline.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
mediaPlayer.seekTo(progress);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
//customise timeline seekbar
new Timer().scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {
timeline.setProgress(mediaPlayer.getCurrentPosition());
}
}
, 0, 1000);
}
public void playMe(View view){
mediaPlayer.start();
}
public void pauseMe(View view){
mediaPlayer.pause();
}
}

如果我删除计时器方法..每个这都很好...我想我在这方面做了一些痛苦的事情...

帮帮我

提前谢谢你..

Answer 1

您需要检查"fromUser"变量是否为真，搜索栏进度已更改。因为在这两种情况下，当用户手动更改时和计时器更新搜索栏进度时，您都会收到搜索栏更改回调。

更新的代码：-

package com.example.musicplayer;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.SeekBar;
import java.util.Timer;
import java.util.TimerTask;
public class MainActivity extends AppCompatActivity {
MediaPlayer mediaPlayer;
AudioManager audioManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mediaPlayer = MediaPlayer.create(this,R.raw.senorita);
audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
int myMaxValume= audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
int myCurrentValume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
SeekBar valumeRocker = findViewById(R.id.seekBar);
valumeRocker.setMax(myMaxValume);
valumeRocker.setProgress(myCurrentValume);
valumeRocker.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,progress,0);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
//timeline part of music app
final SeekBar timeline = findViewById(R.id.timeline);
timeline.setMax(mediaPlayer.getDuration());
//set onChange listner on timeline
timeline.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (fromUser) mediaPlayer.seekTo(progress);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
//customise timeline seekbar
new Timer().scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {
timeline.setProgress(mediaPlayer.getCurrentPosition());
}
}
, 0, 1000);
}
public void playMe(View view){
mediaPlayer.start();
}
public void pauseMe(View view){
mediaPlayer.pause();
}
}